Page 19 - 01 CARBOHYDRATES for TCM

Extraction method of some TCM polysaccharides by decoction

Strength

- Accelerate the dissolution of polysaccharide from the cell wall

- Make polysaccharides easier to dissolve in water

Weakness

- Long duration and at high temperature may result in the

degradation of the polysaccharides

- Decrease the biological activity

Usually, the common temperature range for HWE is between 70 ◦C and 90 ◦C, and

the extraction time is between 2 h and 6 h, which are suitable for most

polysaccharides.