关键词: 败酱草, 多糖, 超声波, 含量变化

Abstract:

In order to optimized the exaction process of polysaccharides from the whole plant of Patrinia villosa Juss, the effects of extraction time, material/liquid ratio and extraction temperature on polysaccharide extraction yield were investigated using single factor and orthogonal array design methods. Meanwhile, polysaccharide extraction yields from the young and old leaves and roots of Patrinia villosa Juss were determined using the optimized extraction process. The assistance of ultrasonic technique to the optimized extraction process was also explored. Each of the above extraction conditions had notable effect on polysaccharide extraction yield. Material/water ratio of 1:20, extraction temperature of 80 ℃, and extraction time of 2 h were found optimum. The extraction rate of polysaccharides was enhanced with the aid of ultrasonic technique.

Key words: the whole plant of Patrinia villosa Juss, polysaccharides, ultrasonic, polysaccharide extraction yield