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单糖有哪些
更新时间: 2021-01-20 13:36:58  

1、单糖类(Monosaccharide):根据碳原子数目可区分为三碳糖、四碳糖、五碳糖、六碳糖、七碳糖、八碳糖等。葡萄糖: 来自淀粉、蔗糖麦芽糖及乳糖的水解产物,是组织所利用最主要的一种糖。糖尿病患者因血糖较高所以在尿中亦会测得较高浓度的糖,及俗称的糖尿。

2、双糖类(Disaccharide):指经过水解后可产生二分子相同或不同单糖者,例如蔗糖(sucrose)、乳糖(lactose)及麦芽糖(maltose)。糖来源,麦芽糖(maltose):淀粉的水产物,正在发芽的榖类和麦芽。乳糖(lactose):乳汁,怀孕时尿中也可能有。蔗糖(sucrose):甘蔗和甜菜糖,蜀黍类植物凤梨胡萝卜根。海藻精(trehalose):蕈类及酵母,是昆虫血淋巴中的主要糖类。

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