Question

write about the Starch​

Answer 1

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Starch is a polymer of ∝-D-glucose.Starch has two components, namely, amylose (15-20%) and amylopectin(80-85%). Amylose is soluble in water and forms blue coloured complex with iodine. It contains 200-1000 ∝-glucose units linked by ∝-1,4- glycosidic linkages giving rise to unbranched chain of variable length. Amylopectin is water insoluble component of starch which forms blue-violet coloured complex with iodine. It is a branched chainpolysaccharide. In amylopectin, chains are formed by ∝-1,4- glycosidic linkages between ∝-glucose units, where as branches are formed by ∝-1,6- glycosidic linkages