Optimization of ultrasound-assisted extraction of polysaccharides from the Chinese medicinal plant Rhodiola sachalinensis A. BOR

摘要

Ultrasound-assisted extraction (UAE) of polysaccharides from the Chinese medicinal plant Rhodiola sachalinensis A. BOR (PRs) was studied. The effects of four factors (extraction time, ultrasonic power, liquid-solid ratio and extraction temperature) on the extraction yield of PRs were investigated by the single-factor test, and the optimum UAE conditions were investigated by the orthogonal test. The results demonstrated that the optimum UAE conditions for PRs were as followings: extraction time of 30 min, ultrasonic power of 85 W, liquid-solid ratio of 45 ml/g, and extraction temperature of 45°C. The present data might provide a theoretic base for full utilization of Rhodiola sachalinensis A. BOR.