How to Distinguish Small Molecular Sugars and Polysaccharides
Generally, 80% ethanol is used. Because small molecule sugar can dissolve in 80% ethanol, polysaccharide is insoluble. By separating the two methods, there will be no interference in the determination of the content separately. There are two specific approaches:
1. One is to extract the extract (or crude drug) with 80% ethanol, extract the liquid to get small molecule sugar, and extract the residue in water to get polysaccharide.
2. Adding ethanol to 80% of the extract solution, the supernatant was obtained as a small molecule sugar, which was precipitated and dissolved with water.
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