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Write notes on starch |
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Answer» Starch : Polysaccharides : The saccharides which on hydrolysis to form large number of monosaccharides are called polysaccharides Eg: Starch and cellulose Starch : `to` Starch is the most important dietary source for human beings. `to` Vegetables , roots , cereals are important sources of starch. `to` It is a polymer of `alpha` - glucose. `to` It is constituted by two components Amylose and amylopectin Amylose : `to` It constitutes 15-20% of starch `to` Amylose is water soluble component. `to` Amylose is a branched chain with 200-1000 `alpha` - D- glucose units held by C-1 to C-4 glycosidic linkage . Amylopectin : `to` Amylopectin constitutes 80-85% of starch. `to` It is a branched chain polymer of `alpha` - glucose units in which chain is formed by C-1 to C-4 glycosidic linkage whereas branching occurs by C-1 to C-6 glycosidic linkage |
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