海水小球藻多糖组成单糖主要为吡喃糖，α半缩醛羟基和β半缩醛羟基两种糖苷构型共存；
Pyranose is the major component of the polysaccharide in Marine Chlorella , with two glycoside configurations ,α - hemiacetal hydroxy and β - hemiacetal hydroxy , coexisted .
半缩醛羟基