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怎么判断二糖的糖苷键是α型还是β型，还有怎么判断二糖本身是α型还是β型？ - 知乎 1,4 alpha glycosidic bonds are formed when the OH on the carbon-1 is below the glucosering; while 1,4 beta glycosidic bonds are formed when the OH is above the plane 抱歉漏掉了第二个问题，以下是我的回答：