Structure determination of the sugar chains is usually ba-sed on the identification of known saccharide grous. So the key point is to identify t-he position of glycosidation and the configuration of glycoside. 黄酮苷中的大多数糖为已知,且糖的种类不多,糖链部分的结构测定通常是对已知糖基进行鉴定,所以鉴定重点是对苷化位置和苷的构型进行确认。