Silk Technology
Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Analysis of Reeling water.
Project Period :1970-71
Objectives :Quality of reeling water has been found to determine the reeling qualities of cocoons.
Results/Recommendations :The good reeling water should be limpid, should have hardness of 18° French, 2/3 of which is temporary and a medium soluble alkalinity (15-40°).
Source of Information :Annual Report-1970-71
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on reeling of left over and partially reeled cocoons in filatures.
Personnel : Madhava Rao NR, Laxmipathaiah BN
Project Period :1974-1975
Objectives :To study the proper preservation of left over cocoons and utilizing them for reeling next day without any loss in quality of silk fibre.
Results/Recommendations :The treatment with formalin of 0.05% concentration overnight has given encouraging results. Before reeling the cocoons thus treated are required to be washed in water. The renditta is low and the percentage of loss is also very much reduced. The left over cocoons in the filatures may be preserved in formalin of 0.05% concentration overnight. Cocoons thus treated must be washed thoroughly to remove formalin before reeling.
Source of Information :Annual Report-1974-75
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on improving the quality of reeling water in Sidlaghatta area of Kolar district.
Personnel :Basavanna HM, Madhava Rao NR, Laxmipathaiah BN
Project Period :1974-1976
Objectives :To improve the quality of water available around Sidlaghatta and improving the same for use for reeling.
Results/Recommendations :
· It is clear that the Mosque well water sample is unsuitable for reeling. But by treating with 15 gms of limestone and 6 cc. Lactic acid, the sample of water had approached the optimum values and the renditta reeled in such treated water has also reduced by 1 to 1.5 unit.
· To improve the quality of well water in the Mosque of Kolar for reeling, it is recommended to use 15 gm lime + 60 cc of lactic acid for 100 litres of water.
Source of Information :Annual Report-1974-76
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Reeling methods for bivoltine cocoons.
Personnel : Madhava Rao NR, Laxmipathaiah BN
Project Period :1974-1978
Objectives :To find out the proper cooking methods to be followed in reeling the bivoltine cocoons.
Results/Recommendations :Between the two systems of 3 pan cooking (System A-higher-lower-higher temperature and System B-lower-higher-lower temperature), it is seen that the system B is better and again system A is better than open pan cooking system.
Source of Information :Annual Report-1974-78
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Improvement of Country charaka.
Personnel : Madhava Rao NR, Laxmipathaiah BN
Project Period :1974-75
Results/Recommendations :The addition attachments and modifications designed at the institute can be fitted to the already existing country charaka for improving the quality of fibre.
Source of Information :Annual Report-1974-75
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the Sericin and Fibroin contents in cocoon shells of different silkworm races-Sericin and Fibroin content in the cocoon shells of multivoltine, bivoltine and hybrid races reared in Karnataka State.
Personnel :Narasimhanna MN, Basavanna HM, Kodandaram MS
Project Period :1974-1976
Objectives :To study the sericin content in different races produced so as to assess the races of silkworms containing least amounts of sericin.
Results/Recommendations :Multivoltine races contain the highest amount of sericin ranging from 33.71 to 35.33%. Bivoltines and bivoltine hybrids contain 26.24 to 28.72%. In the F1 crosses with multivoltine female parent the sericin content ranges between 30.02 to 33.15%. Therefore it is showed that bivoltine contains lower sericin than multivoltine
Source of Information : Annual Report:1974-76
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the Sericin and Fibroin contents in cocoon shells of different silkworm races-Studies on the degumming loss (Boil off loss) in raw silk of different races.
Personnel :Narasimhanna MN, Basavanna HM, Kodandaram MS
Project Period :1974-1983
Objectives :To assess the comparative boil off loss in raw silk of different races.
Results/Recommendations :65 different bivoltine cocoon samples were analyzed for degumming loss maximum degumming loss was recorded in the cocoon shells of the race NB4C (28.82%) followed by CC1 x JC1 (28.35%) While JA2 (marked) showed the lowest degumming loss of 24.85%.
Source of Information :Annual Report-1974-83
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Field trials of improved charka.
Personnel : Lakshmipathaiah BN, Sen Gupta D
Project Period :1975-1983
Results/Recommendations :The results indicate that the superiority of improved country charkha over traditional charakha particularly with respect to the quality of raw silk. The various physical characteristics of raw silk viz., evenness, neatness, cleaness, average size deviation, cohesion and winding quality were much improved.
Source of Information :Annual Report-1975-83
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Effect of steaming of hot air dried cocoons before cooking and reeling on production of rawsilk.
Personnel : Lakshmipathaiah BN, Sen Gupta D
Project Period :1975-1977
Objectives :To find out the effect of steaming the hot air dried cocoons.
Results/Recommendations :It is observed that the renditta obtained from the cocoons stifled at 100°C is favourable as compared to the renditta obtained from the cocoons stifled at 80°C and 120°C. It is also observed that the percentage of waste obtained from the cocoons stifled at 100°C is considerably less when compared to cocoons stifled at 80°C and 120°C.
Source of Information :Annual Report-1975-77
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the preservation of cocoons for a longer period and its effect on the recovery of silk.
Personnel : Lakshmipathaiah BN, Sen Gupta D
Project Period :1976-1977
Objectives :To study the extent of damage caused on the cocoons due to long time storage and to evolve certain remedial measure to reduce the losses due to damage.
Results/Recommendations :The result indicate that the storing of cocoons has a bad effect on the percentage recovery of silk.
Source of Information :Annual Report: 1976-77
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the cooking of bivoltine cocoons under conventional single pan system of cooking and 3 pan system of cooking and their effect on the renditta of cocoons.
Personnel : Lakshmipathaiah BN, Sen Gupta D
Project Period :1976-1977
Objectives :To find out the beneficial effect of the 3 pan system of cooking as compared to single pan system of cooking in reeling of thick shell bivoltine cocoons of Karnataka.
Results/Recommendations :The renditta obtained by cooking cocoons under 3 pan system of cooking is favourable by 0.60 as compared to renditta obtained under single pan system of cooking and reeling. Percentage of waste obtained under 3 pan system of cooking found less by 3.92% as compared to percentage of waste obtained under single pan system of cooking.
Source of Information :Annual Report: 1976-77
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Evolving of factors for assessing the renditta of cocoons under purchase in the field-Function SR% double cocoons and melted cocoons in evolving a factor.
Personnel : Lakshmipathaiah BN, Sen Gupta D
Project Period :1976-1977
Objectives :To evolve a new system of assessing the renditta in the Institute on the basis of shell percentage.
Results/Recommendations :By having the values of SR%, % double cocoons and % melting with the help of the factors it may be possible to assess more accurate renditta, then the renditta assessed under present system of feel and visual examination.
Source of Information :Annual Report: 1976-77
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Variation in size of cocoon filament from outer layer to inner layer and its effect on the evenness and size deviation quality of raw silk.
Personnel : Lakshmipathaiah BN, Sen Gupta D
Project Period :1976-1977
Objectives :To improve the evenness and size deviation qualities of raw silk.
Results/Recommendations :For size variation studies filament length of 225 mts in case of multivoltine cocoons were taken. It was observed that all the 5 cocoons taken for denier variation studies in their first 225 mts has given denier above 3.2 and the last 225 mts has given 1.4 and 1.6 denier.
Source of Information :Annual Report: 1976-77
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Reeling water analysis.
Personnel :Basavanna HM, Srinivasan EB
Project Period :1976-1977
Objectives :To analyze reeling qualities like pH, limpidity, total hardness and soluble alkalinity of water samples received from Kumarapalyam Co-operative Silk Factory, Tamil Nadu and Govt. Silk Reeling Unit, Hosur.
Results/Recommendations :The water samples were highly alkaline (Hosur) to neutral (Kumarapalyam). Both samples were unsuitable for reeling since they contain larger quantity of CaCO3 as total hardness.
Source of Information :Annual Report: 1976-77
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies with regard to quality of water for silk reeling-Studies on the use of different reeling water for reeling bivoltine cocoons.
Personnel : Kumar PA, Lakshmipathaiah BN, Basavanna HM
Project Period :1977-1978
Objectives :To study the quality of water required for reeling.
Results/Recommendations :The equal mixture of city tap water and well water had given a better reeling quality than others. The distilled water to which common salt was added gave next results. The raw silk obtained with this water had drained off the least amount of softened sericin during the process of reeling.
Source of Information :Annual Report: 1977-78
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies with regard to quality of water for silk reeling-Soap method for determination of hardness of water.
Personnel : Kumar PA, Basavanna HM
Project Period :1977-1978
Objectives :The currently available laboratory methods are not suitable for testing water on the spot in the villages. A soap solution method has been developed.
Results/Recommendations :As Lifebuoy soap was cheap it was used for routine water analysis.
Source of Information :Annual Report: 1977-78
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Reeling performance of bivoltine cocoons on the automatic reeling machine with Japanese cocoon boiling machine.
Personnel :Sonwalkar TN, Lakshmipathaiah BN, Nagabhushan
Project Period :1977-1983
Objectives :Establishment of a correlation between cocoon quality and renditta and the general working performances of the new machines.
Results/Recommendations :The result indicated that the average size in multivoltine cocoons was 20.57 denier and in bivoltine cocoons was 19.96. The average renditta obtained was 10.8 (MV) and 6.9 with corresponding silk recovery percentage of 54.6% (MV) and 64.2%. The standard size deviation was 1.281 (MV) and 1.337 (BV).
Source of Information :Annual Report: 1977-83
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the reeling performance of bivoltine cocoons on automatic reeling (with pressurized cooking) and traditional multi end reeling machine with pressurized cocoon boiling and also open pan system of cocoon cooking.
Personnel : Sonwalkar TN, Sengupta D, Nagabhushan
Project Period :1977-1979
Objectives :To find out the difference, if any, in renditta between the automatic reeling technique and conventional reeling technique on multi end reeling machine for bivoltine cocoons.
Results/Recommendations :There was no significant difference in production, raw silk denier and the size deviation between pressurized cooking and open pan cooking on the traditional multi end machine. Hence the pressurized cooking system would be suitable for multi end reeling machine.
Source of Information :Annual Report: 1977-79
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Test reeling of various bivoltine and multivoltine cocoons on multi end reeling machine.
Personnel : Sonwalkar TN, Lakshmipathaiah BN, Sengupta D
Project Period :1977-1983
Objectives :To find out the different reeling characteristics of the cocoons of different breeds.
Results/Recommendations :
· The results reveal that the average silk ratio percentage of bivoltine cocoons was recorded to be 20.1%. Average renditta was recorded as 7.3 with 79.6% reelability.
· For multivoltine cocoons, the average silk ratio percentage was recorded 18.16.
· Average renditta was found to be 8.4 with 73.3% reelability.
Source of Information :Annual Report: 1977-83
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Reeling performances of bivoltine cocoons cooked with open and three pan system on multi end reeling machine.
Personnel : Sonwalkar TN, Sengupta D
Project Period :1977-1978
Objectives :To find out the best cooking methods suited to different varieties of cocoons
Results/Recommendations :With both the system of 3 pan cooking, renditta appears to be lower as compared to open pan system. Also other reeling performances such as reelabilty, waste percentage etc., are favourable in 3 pan system.
Source of Information :Annual Report: 1977-78
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Critical study of variation between cocoon weight, shell weight, filament length and denier of bivoltine cocoons.
Personnel : Sonwalkar TN, Lakshmipathaiah BN, Sengupta D
Project Period :1977-1978
Objectives :To find out the variation between cocoon weight, shell weight, filament length and denier, since wide variations in these characters affect the reeling performance and quality of raw silk.
Results/Recommendations :Average CV % of cocoon weight is 18.7 varying from 13.3%-29% in various lots. Average CV % of single shell is 13.9% varying from 10.7-18.4%. Average CV % of filament length is 21.6% varying from 9.1-47.7% and average CV % of denier is 15.9% varying from 6.7%-33%.
Source of Information :Annual Report: 1977-78
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on finding out the moisture content in the shell and assessment of shell percentage on absolute dry weight and conditioned weight of shell.
Personnel : Sonwalkar TN, Lakshmipathaiah BN
Project Period :1977-1978
Results/Recommendations :
· The conditioned shell percentage is more (49%) than the unconditioned stifled shell percentage (48.8%). In bivoltine lots, unlike in the case of fresh cocoon shell fully dried cocoon shells by hot air stifling do not absorb moisture upto the extent of 9.9% because of compact shell.
· Whereas in case of Multivoltine lot conditioned shell percentage (42.81%). This might be due to the loose shell of multivoltine cocoons which easily absorb the moisture.
· The moisture content in shell with reference to the harvesting day was 11.4%, varying from 9.6-15.6% in the bivoltine lots. The moisture content in the multivoltine lot was 14.9%.
Source of Information :Annual Report: 1977-78
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on silk reeling in cold using chemicals (sodium salts).
Personnel : Krishnaswami S, Srinivasan EB
Project Period :1978-1981
Objectives :To find out the feasibility of cold reeling of silk in different media, without being detrimental to the quality and quantity of silk and to reduce the cost of fuel.
Results/Recommendations :Cocoons soaked in 1% sodium acetate solution for 3 hrs gave maximum silk recovery of 98.8% compared to 93.08% in normal method of reeling.
Source of Information :Annual Report: 1978-81
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on cold reeling of silk using proteolytic enzymes.
Personnel : Krishnaswami S, Srinivasan EB
Project Period :1978-1982
Objectives :To soften the sericin for cold reeling of silk.
Results/Recommendations :Cocoons soaked in 400 g/lit of raw papaya fruit extract for 4 hrs duration gave maximum 96.23% compared to 93.85% in normal reeling method.
Source of Information :Annual Report: 1978-82
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the reeling performance of bivoltine cocoons on the automatic reeling machine and on the traditional multi end reeling machine with pressurized cocoon boiling for both the systems.
Personnel : Sonwalkar TN, Lakshmipathaiah BN, Nagabhushanaiah YV
Project Period :1978-1979
Objectives :To study the suitability of pressurized cooking for indigenous multi end reeling machine.
Results/Recommendations :Pressurized cooking would be suitable for traditional multi end reeling machines as regards the raw silk yield and waste percentage are concerned.
Source of Information :Annual Report: 1978-79
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Assessment of waste on account of last unreeled parchment layer of cocoons on an automatic reeling machine with pressurized cooking device.
Personnel : Sonwalkar TN, Lakshmipathaiah BN, Nagabhushanaiah YV
Project Period :1978-1982
Objectives :To get an idea of parchment waste percentage on the weight of shell and on the weight of silk.
Results/Recommendations :The results indicated that the overall average pellade layer waste in bivoltine cocoons occupies 4.7% of total shell weight and 7.9% share of total raw silk reeled whereas in the multivoltine cocoons the pellade layer wastes show 5.9% share of total shell weight and 11.6% of total silk reeled.
Source of Information :Annual Report: 1978-83
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Spinning studies-Comparative spinning performance of degummed mulberry cut cocoons with and without oil.
Personnel : Sonwalkar TN
Project Period :1978-1979
Objectives :To see the advantage of application of oil (on silk fibres) on hand spinning of degummed mulberry cut shells.
Results/Recommendations :There is slight improvement in yield and production rate in the case of oil sprayed material. There is no significant difference in the yarn count between the two systems. The lubrication of fibres with some oil during spinning process improves the performance and also the invisible waste particularly the fly will be minimized. It was also experienced by the spinner that the drafting was smoother in the case of oil sprayed material. The application of oil during the spinning process in the Government Spun Silk Mill, Channapatna.
Source of Information :Annual Report: 1978-79
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Single cocoon reeling performance.
Personnel : Sonwalkar TN
Project Period :1978-1982
Objectives :To assess average reelable length and average denier.
Results/Recommendations :Some of the lots like Kinshu x Showa, NB18, NB4D2 of bivoltine variety, yielded filament length of more than 1,000 mts with corresponding denier of 2.36.
Source of Information :Annual Report: 1978-82
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Preliminary reeling studies on pierced muga cocoons.
Personnel : Sonwalkar TN, Nagabhushanaiah YV
Project Period :1978-1979
Results/Recommendations :
· It is seen that the total filament length was 133m and 140m in 1st and 2nd method (boiled in plain water for 5-6 mins. & soaked in 0.3% Na2CO3 and simply cooked in plain water for 8 mins.) respectively and there was not much difference in the non-breakable filament.
· In both the methods, the amount of silk filament reeled was far lower than the amount of silk waste per cocoon.
Source of Information :Annual Report: 1978-79
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the dupion silk reeling on multi end reeling machine.
Personnel :Sonwalkar TN, Lakshmipathaiah BN
Project Period :1978-1979
Results/Recommendations :The renditta of cocoons reeled with croissure is slightly favourable compared to cocoons reeled without croissure, since croissure helped in reducing breakage and thereby the waste production per and per hour was also more in the case of silk reeled with croissure although the denier was finer. It was also observed that the double twist croissure was better than the single twist croissure.
Source of Information :Annual Report: 1978-79
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on silk reeling in cold using Sodium carbonate.
Personnel : Srinivasan EB, Subbuswamy MR
Project Period :1979-1981
Objectives :Studying the feasibility of cold reeling of silk at room temperature using different chemical media.
Results/Recommendations :Multivoltine cocoons were soaked in 1% Sodium Carbonate solution at room temperature and reeled after 4 hrs soaking showed 99% silk recovery while 2 hrs soaking gave 88.9% silk recovery. A control reeling by normal method recorded a silk recovery of 92.85% (bivoltine) and 78.32% (multivoltine).
Source of Information :Annual Report:1979-81
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on silk reeling (cold) using chemicals and detergents-Studies on silk reeling (cold) using sodium acetate solution.
Personnel : Srinivasan EB, Subbuswamy MR
Project Period :1979-1982
Objectives :To study the feasibility of cold reeling of silk at room temperature using different chemical media.
Results/Recommendations :Cocoons soaked in 1% sodium acetate solution for 3 hrs gave maximum silk recovery of 98.8% compared to 93.08% in normal method of reeling.
Source of Information :Annual Report:1979-82
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on silk reeling (cold) using chemicals and detergents-Studies on silk reeling (cold) using synthetic detergents.
Personnel : Srinivasan EB, Subbuswamy MR
Project Period :1979-1980
Results/Recommendations :It was found that cold reeling of silk was possible only at lower concentrations of 1 and 2 gm/lit. While at other concentrations reeling was not possible inspite of controlled hardness. At the concentrations of 4, 6 and 8 gm/lit major portion of silk cocoon became gelatinous.
Source of Information :Annual Report:1979 -80
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Yarn breakage study on automatic reeling and re-reeling
Personnel : Sonwalkar TN, Nagabhushanaiah YV, Gopala Rao M
Project Period :1979-1981
Objectives :To observe the number of breakages per hour per forty ends in an automatic reeling and re-reeling machine.
Results/Recommendations :In bivoltine cocoons, the number of breakages in reeling and re-reeling per 40 ends/hour was 52 and 43 respectively. In case of multivoltine cocoons, the number of breakages in reeling and re-reeling was 87 and 72 respectively. Similarly in case of multi x bi cocoons, the number of breakage in reeling and reeling was 68 and 50 respectively.
Source of Information :Annual Report:1979-82
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Dynamometric tests of bivoltine raw silk reeled on automatic machine.
Personnel : Sonwalkar TN, Nagabhushanaiah YV
Project Period :1979-1981
Objectives :To examine the tensile characteristic improvement, if any of the automatic machine reeled silk.
Results/Recommendations :The average tenacity and elongation of different races of bivoltine were found to 3.9 gms/dr and 19% respectively. Minimum and maximum tenacity was found to be 3.6 gm/dr and 4.2 gm/dr. Minimum and maximum elongation was found to be 16% and 27% respectively.
Source of Information :Annual Report:1979-82
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on silk reeling-Studies on the chemical composition of cocoons of new strains.
Personnel :Jolly MS, Srinivasan EB, Subbuswamy MR
Project Period :1980-1983
Objectives :To study the actual amount of fibroin and sericin present in the cocoons of new strains by chemical methods.
Results/Recommendations :The cocoon samples of NB7, NB18 and NB18 x NB7 were analyzed for sericin and fibroin contents. Sericin content recorded was 26.67% in NB7 and 29.27% in NB18 . NB18 x NB7 recorded 72.1 fibroin while NB7 shown 71.46% followed by NB18 (68.98).
Source of Information :Annual Report:1981-82
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Comparative reeling performance of bivoltine and multivoltine cocoons on an automatic reeling machine (with Japanese boiling machine) and filature (10 ends) reeling machine (with open pan cooking).
Personnel :Jolly MS, Sonwalkar TN, Shivarudrappa
Project Period :1980-1981
Objectives :To find out the suitability of bivoltine and multivoltine cocoons to the automatic reeling machine in comparison to the filature machine in respect of their reeling.
Results/Recommendations :The bivoltine cocoons are reeled comparatively well yielding 8.1 renditta as compared to 8.2 renditta in the filature machine whereas, the multivoltine cocoons yields higher quantity silk on the filature machine (9.9 renditta) than on the automatic reeling machine (10.4 renditta).
Source of Information :Annual Report:1980-81
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Influence of stifling duration on reeling performance of bivoltine cocoons on an automatic reeling machine.
Personnel :Jolly MS, Sonwalkar TN, Nagabhushanaiah YV
Project Period :1980-1981
Results/Recommendations :There was no significant difference in the reeling performance between the stifling periods. However, there was a trend that renditta remained at lower level in the mid range of driage percentage i.e., 36-56% indicating that around 45% would be suitable for cooking in an automatic reeling technique.
Source of Information :Annual Report:1980-81
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Reeling performance of constricted and oval cocoons on multi end reeling machine with open pan cooking device.
Personnel : Jolly MS, Sonwalkar TN, Gopala Rao M
Project Period :1980-1981
Results/Recommendations :Average renditta, reelability and total waste percentage for constricted and oval cocoons were 6.4, 71.4%, 18.5 and 6.9, 64.4% and 27.1 respectively.
Source of Information :Annual Report:1980-81
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the suitability of water samples for silk reeling from different regions.
Project Period :1980-1982
Objectives :
Results/Recommendations :Water samples were analysed for pH, alkalinity, hardness etc., and remedial measures were suggested.
Source of Information :Directory of Concluded Projects of CSRTI, Mysore- 2005
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on silk reeling (cold) using chemicals-Preliminary studies on mass reeling of silk at room temperature in chemical medium.
Personnel : Jolly MS, Srinivasan EB, Lakshmipathaiah BN
Project Period :1981-1984
Objectives :Feasibility and efficiency of mass reeling of silk at room temperature.
Results/Recommendations :The unstifled cocoons were soaked in 1% sodium acetate solution at 8.5 pH for 1hr after adjusting the required hardness and alkalinity. The use of warn heater helped in obviating end picking problem in mass reeling. The silk recovery ranged from 35.62% to 51.05% while the frequency of breakages was around 10.
Source of Information :Annual Report:1981-84
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Chemical analysis of silk cocoons obtained after different treatments-Chemical composition of thyroxine treated cocoons.
Project Period :1982-1983
Results/Recommendations :
· Control samples showed high Fibroin content in NB7 and NB18 cocoons. Thyroxine treated on worms (TW) showed better Fibroin in Pure Mysore cocoons.
· The lowest Fibroin was recorded by Pure Mysore i.e., 59.89% in control samples while NB18 gave 61.77% Fibroin in TW.
Source of Information :Annual Report:1982-83
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on mass reeling of silk at room temperature in chemical medium in cottage basin.
Project Period :1982-1983
Results/Recommendations :
· Silk recovery was around 54%.
· The frequency of breakages were 5 to 10.
· Number of breakages was observed in re-reeling process.
· End picking was difficult in this case also.
Source of Information :Annual Report:1982-83
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Effect of different cooking systems on the reeling and related characteristics of raw silk of multivoltine and bivoltine cocoons.
Project Period :1982-1983
Objectives :To find out the best cooking methods suited to different varieties of cocoons and also to see the effect of cooking upon the reeling property of cocoons and important technological qualities of raw silk.
Results/Recommendations :The cooking treatments of without steaming effect recorded significantly higher cooking degree both in multi x bi cocoons (8.9) and bivoltine cocoons (9.1) as against the corresponding results viz., 8.3 and 8.5 obtained in the cooking treatments.
Source of Information :Annual Report:1982-83
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Post harvest technology-Studies on minimizing the winding breaks of raw silk by using softners.
Project Period :1983-1987
Objectives :To minimize the winding breaks by softening the hard gum plastering with the application of softener/surface active agents.
Results/Recommendations :The results indicated that 2% Waxpol-P treatment for 1hr is having the minimum number of breaks for both the raw silk reeled both from bivoltine and multivoltine cocoons. The surf solution treatment has also reduced the number of breaks for both the kinds of raw silk to be a great extent in comparison with this plain water treatment.
Source of Information :Annual Report:1983-87
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on gradation of cocoons and silk obtained from different evolved strains.
Project Period :1983-1985
Objectives :To study the reeling characters of different newly evolved silkworm varieties.
Results/Recommendations :CA2 x JA2, CC1 x JC1, CA2 x NB4D2, KA x NB4D2 and NB7 x NB18 among bivoltines, MY2 x CA2, MY1 x NB18, MW1 x NB4D2, MW1 x CA2 and MW1 x NB18 among multi x bi varieties showed encouraging results in respect of silk recovery and neatness property which ranged from 6.2-7.4 renditta and 84 to 92% respectively.
Source of Information :Annual Report:1983-85
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the derivation of a mathematical formula for fixing the cocoon price.
Project Period :1983-1984
Objectives :To assess cocoon ratio (renditta) by adopting the mathematical formula i.e.,
1
Renditta= ___________________________________________________
Shell ratio x reelable cocoon % x raw silk recovery %
Results/Recommendations :The validity of the formula has been tested by reeling of some bivoltine and multivoltine cocoons by comparing actual renditta with their assessed renditta. The results obtained were non-significant thereby confirming the proprietary of the formula.
Source of Information :Annual Report:1983-84
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Comparative reeling performance of deflossed and undeflossed cocoons.
Project Period :1984-1985
Objectives :To assess which type of cocoon yield higher quantity of raw silk, the division conducted the comparative study on the reeling performance of deflossed cocoons vis-à-vis undeflossed ones of multi x bi variety.
Results/Recommendations :The results indicate that there is no significant difference in raw silk yield and other important characters of the deflossed cocoons vis-à-vis undeflossed ones although general improvement has been observed in the reeling performance of deflossed cocoons. Cost including deflossing charges would considerably reduced for deflossed cocoons due to higher raw silk output from them.
Source of Information :Annual Report:1984-85
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the quality of water for reeling and irrigation.
Personnel :Basavanna HM, Srinivasan EB, Subbuswamy MR, Sundareswaran P
Project Period :1985-1989
Objectives :To study the suitability of water for irrigation and silk reeling.
Results/Recommendations :About 200 water samples received from reeling section, farmers and reelers have been analyzed for pH, electrical conductivity, total hardness, temporary hardness, permanent hardness, total alkalinity and total dissolved solids.
Source of Information :Annual Report:1985-89
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Fabrication of improved charakha, cottage basin and multi end reeling basin-Modification of CSR&TI improved charkha.
Personnel :Ghosh SS, Shamachary, Ramaswamy
Project Period :1985-1989
Objectives :
· Fabrication of improved reeling machine for higher efficiency and productivity.
· Standardization of CSR&TI improved reeling machine for higher efficiency and productivity.
Results/Recommendations :
· Reeling basin is fixed at a height of 0.6 m from the ground level as cottage basin, to enable the reeler to cast the filaments in a more relaxed and comfortable way by standing posture or sitting over a stool, as desired.
· The turner of the improved reeling machine can operate the handle more smoothly and freely by sitting on a stool as the driving shaft of handle is fixed at a height of 1.1 mt from the ground level.
Highlights of CSR&TI Improved reeling machine:
· Re-reeling efficiency is increased by fixing re-reeling driving shaft at a height of 0.8m as in Japanese re-reeling devise and provision is also made for charcoal drying system for the upgradation of raw silk quality.
· All moveable parts are provided with ball bearing for smooth running, higher efficiency and trouble free operation. The overall dimension of the machine is kept as 1.3 m length x 1.0 m width x 1.3 m height.
Source of Information :Annual Report:1985-89
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Evolving of suitable method of stifling, cooking and reeling for multivoltine, multi x bi and bivoltine hybrid cocoons-To find out suitable storage atmospheric condition and types of container in relation to optimum reeling and technological qualities.
Project Period :1985-1986
Results/Recommendations :It was observed that upto 45 days storage deterioration in reeling properties of cocoon was not significant but for 90 days storage significant deterioration in silk recovery and reelability property took place.
Source of Information :Annual Report:1985-86
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the effect of different reeling basin temperature on the reeling of cocoons and technological qualities of raw silk.
Project Period :1985-1986
Objectives :To find out the influence of different reeling temperature on cocoon reeling behaviour and silk quality.
Results/Recommendations :The results indicate that in both bivoltine and multi x bi varieties the highest silk recovery and reelability property were observed at 70°C followed by 45°C and 27°C successively. Although silk recovery and reelability property have increased with the rise of temperature of reeling the neatness and cleanness properties have reduced considerably.
Source of Information :Annual Report:1985-86
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Designing of improved oven for charkha and improved charkha.
Project Period :1985-1986
Objectives :To utilize maximum heat energy from unit quantity of fuel for water heating and reeling cocoons.
Results/Recommendations :In designing the improved ovens followed measures have been taken to minimize heat loss.
· Maximum surface of reeling basin and water drum has been exposed to heat energy.
· Replacement of dirty water of reeling basin at the end of each ghani reeling (about 2 kg cocoons) with hot water from reservoir drum.
Source of Information :Annual Report:1985-86
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Mass reeling performance of bivoltine and multivoltine cocoons on the automatic reeling machine (SEB-40) with pressurized cooking device.
Project Period :1985-1989
Objectives :To find the reeling performance of different varieties of cocoons on semi-automatic reeling machine.
Results/Recommendations :11 lots of cross breed cocoons (229.110 kg) and 13 lots of bivoltine cocoons (270.745 kg) were reeled on semi automatic reeling machine (SEB-40) by pressurized cooking. The results are:
Race
Filament length (m)
Size denier
Renditta
Raw silk %
Waste%
PM x NB18
807
2.3
9.4
10.6
24.1
NB18 x NB7
1036
2.8
8.7
1.5
16.4
Source of Information :Annual Report:1985-86, 1988-89
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Analysis of cocoon samples.
Personnel :Basavanna HM, Bose PC, Subbuswamy MR
Project Period :1986-1987
Objectives :Estimation of total silk content in cocoons.
Results/Recommendations :Cocoon received from multivoltine breeding laboratory have been analyzed for sericin and fibroin contents by standard techniques. Six samples, received shows that MW1 has high Fibroin content of (71.67%) and MHN7 has recorded low Fibroin content of (61.96%).
Source of Information :Annual Report:1986-87
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on standardization of stifling cooking and reeling techniques of multivoltine cross breed and bivoltine cocoons.
Project Period :1986-1987
Objectives :Development of hot air chamber with the easily and locally available fuels.
Results/Recommendations :Mulberry cocoons, both pure and cross breeds were stifled by the newly developed hot air stifling chamber. Reeling performance on different types of reeling appliances and the technological characters of raw silk were also normal. The stifling chamber can also be effectively used for stifling of non-mulberry cocoons. It will be very much suitable for raw material bank.
Source of Information :Annual Report:1986-87
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on cooking of bivoltine and Cross breed cocoons.
Project Period :1986-1987
Objectives :To standardize a suitable method of cooking for bivoltine and cross breed cocoons.
Results/Recommendations :It indicates that the cooking degree for both bivoltine and cross breed cocoons are more in three pan system than open pan system. It also indicates that gropping (%) and reelability (%) is more in three pan system than open pan system of cooking. No significant difference was observed in case of renditta raw silk%, raw silk recovery% and waste % in both the system of cooking for both kinds of cocoons.
Source of Information :Annual Report:1986-87
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on silk waste spinning-Studies on feasibility of spinning of Botswana silk waste.
Project Period :1986-1987
Objectives : Feasibility of processing of Botswana silk waste.
Results/Recommendations :Result indicates that there is vast scope to produce the spun yarn from Botswana silk waste through khadi system of spinning. The material can also be utilized for mill spinning by the proper development of degumming processes.
Source of Information :Annual Report:1986-87
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on test reeling of cocoons and quality assessment of raw silk.
Project Period :1986-1987
Objectives :Fixation of norms for the different cocoons.
Results/Recommendations :Multivoltine races MW1 showed best reeling performance where renditta, filament length and reelability are 10.0, 619m and 91.2% and in multi x bivoltine races MY1 x NB18 showed best reeling performance where the above characters are 8.0, 735 m and 95% respectively and in bivoltine races NB18 x NB7 the above characters are 6.5, 930m and 92.4% respectively.
Source of Information :Annual Report:1986-87
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Mass reeling performances of different varieties of cocoons-Mass reeling performance of multi x bi and bivoltine cocoons on multiend reeling machine with open pan cooking.
Project Period :1986-1987
Objectives :Research feed back to different sections and filatures.
Results/Recommendations :
FL (m)
Size (dr)
Renditta
Rawsilk %
Waste %
MU11
450
2.3
10.23
9.78
36.00
MU 303
415
2.2
11.00
9.00
38.60
HM
398
2.2
12.18
8.21
40.28
Mys x NB4D2
812
2.8
9.87
10.13
32.00
PM x NB18
834
2.9
9.35
10.70
31.25
HM x PM x NB18
741
2.7
9.52
10.50
35.10
NB7
1010
2.9
8.57
11.67
22.86
NB18 x PCN
980
2.8
7.66
13.05
22.70
KA
1000
2.7
8.20
12.12
23.00
Source of Information :Annual Report:1986-87
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Popularization of CSR&TI improved reeling machine.
Project Period :1987-1988
Objectives :Popularization of CSR&TI Improved reeling machine in the field.
Results/Recommendations :Improved reeling machines were manufactured in a large scale by the approved manufacturers, as per the demand from reelers of different states. M/s Central workshop (KSIC), Channapatna, M/s Altex Industries, Bangalore and M/s National Tank manufacturing works, Calcutta were the prime manufacturers and suppliers of improved reeling machines.
Source of Information :Annual Report:1987-88
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the development of dupion silk reeling machine and its technique-Designing and fabrication of dupion silk reeling unit.
Project Period :1987-1988
Objectives :Designing and developing a standard dupion silk reeling machine.
Results/Recommendations :To avoid the inconvenience during reeling a common basin of size 90 cm length, 45 cm width and 15 cm depth made of Aluminium is used for both the reels. A perforated partition is provided at the centre of the basin which avoids the mixing of cocoons for two reels and at the same time, uniform temperature is maintained in both the basins.
The standard A.C. chimney of 3m height and 15 cm diameter has been standardized for the oven of the dupion silk reeling machine. After the above modifications, the machine is kept ready for large scale reeling trials.
Source of Information :Annual Report:1987-88
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Designing and fabrication of one prototype bivoltine basin (multi end reeling machine) VIJAY-2.
Project Period :1988-1990
Objectives :To develop suitable reeling machine which will be useful for small entrepreneurs, to reel bivoltine and other improved races of cocoons.
Results/Recommendations :The laboratory was also engaged in the extension work with special reference to the adoption of 'Vijay' Reeling machine and the 'Ushna Kothi' system for the hot air stifling of the cocoons developed earlier by this institute. Accordingly different demonstrations were given on the usage of both with special reference to the improvement in the fibre quality of the silk reeled in traditional and non-traditional areas.
Source of Information :Annual Report:1988-90
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on deflossing of cocoons-Studies on deflossing performance of bivoltine cocoons by different methods/machines.
Project Period :1988-1989
Objectives :Determination of the efficiency of different deflossing machines and selecting the best deflosser for the commercial use.
Results/Recommendations :The best performance was given by the conventional rod system of deflossing. In case of Japan make machine crushing of cocoons during deflossing is the common defect while in SJCE make machine the garlanding and clustering of cocoons is the common defect.
Source of Information :Annual Report:1988-89
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the reeling technique and reeling performance of the double cocoons.
Project Period :1988-1989
Objectives :To standardize the reeling technique of dupion silk.
Results/Recommendations :Data indicates that average renditta of 7.93, reelability of 84.86%, raw silk recovery of 83.46% and output/4 ends/hr of 0.560 kg during the mass reeling trials of bivoltine double cocoons for the production of dupion silk.
Source of Information :Annual Report:1988-89
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Chemical Processing
Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the boil off loss with reference to the cocoon shell in bivoltine silkworm Bombyx mori L.
Personnel :Jayaramudu G
Project Period :1995-1996
Objectives : To study the boil off loss in parental breeds and their hybrids to select the promising hybrids with desired boil off loss ratio.
Results/Recommendations :On the basis of performance of F1 heterosis and over dominance for B.O.R. four hybrids namely B71 x A71 (22.87%), B65 x A65 (23.15%) B65 x A66 (23.30%) and B68 x A71 (23.19%) were identified as promising. The oval lines registered lower B.O.R as compared to dumbell lines.
Source of Information :M.Sc.Dissertation, 1996
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the mineral composition of the silk.
Project Period :1970-71
Objectives :To understand the types of minerals present in silk cocoon of Mysore race.
Results/Recommendations : The pattern of metal ions in the ash of the shell and fibroin are similar. However, the sodium content of the fibroin ash was more than 3 times that of the shell ash. One of the probable reasons for this increase in sodium in fibroin may be due to the process of degumming with Sodium hydroxide.
Source of information: Annual Report:1970-1971
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the preservation of boiled partially pierced cocoons-Effect of Organic acids viz., Citric acid/ Acetic acid of different concentrations on the reelability of preserved boiled/partially reeled cocoons and on natural properties of silk.
Personnel :Basavanna HM, Madhava Rao NR, Kodandaram MS
Project Period :1973-1975
Objectives :Studying the effect of preservatives used viz., Organic acids on the reelability of cocoons which are partially reeled and preserved.
Results/Recommendations :
· The control lot was highly decomposed and emitted bad smell, water was discoloured. In the acetic acid treatments the reelers felt the irritation of the palms. Colour of reeled silk in controls, acetic acid and citric acid treatments was dull and lustreless.
· The formation treatment at 0.05% concentration has given very good results with low renditta and less percentage of silk waste compared with other treatments.
Source of Information :Annual Report-1973-75
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Silk Testing
Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Determination of conditioned weight of imported raw silk.
Personnel : Sonwalkar TN, Lakshmipathaiah BN
Project Period :1977-1978
Results/Recommendations :The moisture content in the first lot was 9.2% and the conditioned weight was slightly highest than the net weight. Moisture content in second lot was 9.9% and as such the conditioned weight was almost equal to the net weight of the bales. In third lot, the moisture content was higher by 10.4% and the corresponding conditioned weight was lower than the net weight.
Source of Information :Annual Report: 1977-78
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Variation of different physical properties of cocoon silk filament in relation to its position in cocoon layers.
Project Period :1984-1986
Objectives :To analyze the physical characters like tenacity, elongation, cohesion, neatness and sericin content in relation to silk filament's position in cocoon layers.
Results/Recommendations :
· The result reveal that the sericin content is present at higher quantity (33-36%) in the silk reeled from outer layer of cocoons and gradually reduces in the silk as it unwinds towards inner layer which the sericin varying from 17-19%.
· In general neatness property has been found slightly less in the raw silk reeled from outer layer.
Source of Information :Annual Report:1984-86
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the properties of raw silk reeled on different reeling appliances.
Project Period :1986-1987
Objectives :Standardization of testing and grading of Indian raw silk.
Results/Recommendations :Better technological characters were observed for raw silk reeled on improved charkha than raw silk reeled on the country charkha in respect to breaking strength, bursting strength and abrasion resistance. The fabric sample produced from raw silk reeled on cottage basin is almost at par with that of improved charkha.
Source of Information :Annual Report:1986-87
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Raw silk testing-Studies on technological properties of raw silk obtained from different silkworm races.
Project Period :1987-1989
Objectives :Comparative study of raw silk characters reeled from different races and setting norm for grading of raw silk.
Results/Recommendations :Lowest tenacity 2.98 is found in case of PM while the highest 3.37 in case of NB7 x NB18. Similarly, the best neatness of 87.76% and low neatness of 80.33% has been observed in NB7 x NB18. While the poorest neatness of 77.05% and the low neatness of 61.25% has been observed in PM race.
Source of Information :Annual Report:1988-89
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By-product Utilisation
Project No :CSM
Organization :Central Sericultural Research and Training Institute, Mysore
Project Title :Manurial value of silkworm pupae.
Project Period :1967-68
Objectives :To study the manurial value of the silkworm pupae and pupa powder before extraction of oil.
Results/Recommendations :
· The three treated batches viz., raw pupa, powdered pupa and residue after extraction of oil show significance over the control.
· With respect to the development of root and shoot system, the raw pupa and powdered pupa are prone to ant attack perhaps due to the presence of oil content. This results in damage to the plants. The treatment of residue after extraction of oil was free from the ant attack and therefore this appears to be beneficial as useful oil can also be extracted from the pupa powder.
Source of Information : Annual Report:1967-68
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on the chemical nature of silkworm pupae-Studies of the chitin of silkworm pupae.
Personnel : Srinivasan EB, Subbuswamy MR
Project Period :1979-1980
Objectives :Study on the utilization of pupae with regard to chemical constituent
Results/Recommendations :It is found that pupa from the reeling basin contains approximately 1.5% of dry chitin by weight. Since chitin and Chitosan have wide variety of industrial application.
Source of Information :Annual Report:1979 -80
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Comparative studies on cooking and reeling of melted cocoons.
Personnel : Sonwalkar TN, Gopala Rao M
Project Period :1979-1980
Objectives :To observe cooking and reeling performance of melted cocoons as compared to normal cocoons.
Results/Recommendations :
· Average cooking efficiency of melted cocoons was very poor (29.3%) as against the normal cocoons (87.5%). It is also found that more yarn breaks occurred in the case of melted cocoons (33%) than in normal cocoons (20%)
· Silk reeled from melted cocoons was inferior in quality with a very dull colour.
· Melted cocoons should be sorted and reeled separately.
Source of Information :Annual Report:1979 -80
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title :Studies on silk waste spinning.
Project Period :1985-1986
Objectives :To evolve suitable degumming and preparatory process for spinning the waste on spinning wheel.
Results/Recommendations :
· Enzymatic degumming and normal degumming in soap and soda solution has made the waste sufficiently soft and suitable for easy drawing and spinning on spinning wheel. Enzymatic degumming soaking the waste material in chrysalis mixed water for 15 days at room temperature. Degumming in alkaline solution: soap-10%, soda-2.5%, liquor ratio 1:10 (by volume) Duration: 45 minutes.
· After degumming the material was washed, dried and opened by hand. Such open mass of waste was spun on pedal spinning wheel efficiently producing 1040 mts length and 44 gm wt of 25 metric counts in 8hrs working.
Source of Information :Annual Report:1985-86
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Project No.:CSM
Organization :Central Sericultural Research and Training Institute, Mysore.
Project Title : Studies on reeling of uzi pierced cocoons.
Project Period :1988-1989
Objectives :To know the reeling performance of uzi pierced cocoons and its economic feasibility.
Results/Recommendations :Results indicates that in case of uzi pierced cocoons there is significant difference in reeling performance in respect of renditta, raw silk recovery% and reelability %.
Source of Information :Annual Report:1988-89
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