淀粉由什么组成(淀粉的组成)

综合百科2023-01-24 00:28:26佚名

淀粉由约80%胶淀粉与约20%糖淀粉组成。其基本构成单位为α-D-吡喃葡萄糖,分子式为C6H12O6。淀粉有直链淀粉和支链淀粉两类。前者为无分支的螺旋结构;后者以24~30个葡萄糖残基以α-1,4-糖苷键首尾相连而成,在支链处为α-1,6-糖苷键。

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