GL-PPT2, GL-PPT3, and GL-PPT4 comprise the nine monosaccharides of mannose, ribose, rhamnose, glucose, galactose, arabinose, xylose, galactose, and glucuronic acid.

• 经实验确定GL-PPT2、GL-PPT3和GL-PPT4均由甘露糖、核糖、鼠李糖、葡萄糖、半乳糖、阿拉伯糖、木糖、岩藻糖和葡萄糖醛酸等9种单糖组成。