Glycoside

Glycoside

• These are the organic compounds from plants or animal sources which on enzymatic or acid hydrolysis give one or more sugar moieties along with nonsugar moiety.

  • • • Sugar moiety is known as glycone and the non sugar moiety is known as aglycone or genin.

      • Chemically, they are the acetals or sugar ethers, formed by interaction of hydroxyl group each of non-sugar and sugar moiety, with a loss of water molecule.

      • The hydroxyl group of aglycone may be alcoholic or phenolic and in some cases from amines also.

      • The sugars involved in glycosides are of different types, but most commonly, it is β - D - glucose. The other sugars found are galactose, mannose, rhamnose, digitoxose, cymarose, etc.

      • The linkage between glycone and aglycone is called glycosidic linkage