vacuum drying (vd) has some special traits which includes higher drying charge, lower drying temperature vacuum oven Indonesia , and oxygen-deficient processing surroundings. Those capabilities are beneficial and help to improve the great and nutritional fee of the dried culmination and veggies and for this reason vd has been used to dry a number of fruits/vegetables (amellal and benamara, 2008; lengthy et al., 2007; rahman et al., 2009). Vacuum drying is conceptually the ideal method for drying thermal and/or oxygen sensitive substances (which includes fruits and vegetables) due to the advantage of casting off moisture at low temperatures and minimizing the possibility of oxidation reactions..

In comparison to spray drying, vacuum drying requires an extended time to attain equivalent moisture content material despite the fact that less than for freeze drying. Compared to 24 hours for freeze drying, controlled low-temperature vacuum dehydration of lb. Acidophilus took handiest four hours to dry to a very last moisture content material of 5% (king and su, 1994). In addition, the fixed and manufacturing expenses of vacuum drying are ca. 50% decrease than those of freeze drying (santivarangkna et al., 2007). However, dehydration of lactic acid bacteria and bifidobacteria the usage of vacuum drying has now not been notably studied.

Using vacuum drying working at a shelf temperature of 40-45°c, king and su (1994) said a survival rate of lb. Acidophilus starting from 15. Four-30. 4% relying on the protectant used. Loss of viability is explained by long term publicity of cells to warmth stress, the temperature of the mobile listen in the vacuum chamber reaching. The usage of managed low temperature vacuum drying (cltvd) which operates at pressures just above the triple factor of water and a product temperature close to 0°c minimizes exposure of the cells to heat stress

vacuum drying is a batch system, has very small throughput, and entails a house time of the order of 20–100 hIt was located throughout the vacuum drying of lb. Delbrueckii ssp. Bulgaricus that growing the micro organism in a low water hobby medium (broth supplemented with sucrose or with polyethylene glycol) before drying enhanced the effectiveness of the protectant (trehalose) (tymczyszyn et al., 2007). As with freeze drying, the lengthy drying time required on this method and its batch nature are taken into consideration to be dangers that will add charges and lower the potential for commercial software view more