环糊精(cyclodextrin,CD)是环状低聚糖的总称。由6个、7个或8个葡萄糖单元以1,4-糖苷键结合而成的环糊精分别称为α-,β-和Υ-环糊精(简写为α-CD,β-CD 或Υ-CD)。它们的分子形状都是略呈锥形的圆环。例如,β-CD 有如下结构。由于环中的各个葡萄糖单元皆处于椅式构 Cyclodextrin (CD) is a general term for cyclic oligosaccharides. Cyclodextrins in which 1,4, 6-glycosidic bonds are bound by 6, 7 or 8 glucose units are referred to as α-, β- and γ-cyclodextrins (abbreviated as α-CD, β-CD or Y-CD). Their molecular shapes are slightly conical rings. For example, β-CD has the following structure. Since each glucose unit in the loop is in a chair configuration