Study on ultrasonic wave extraction and antioxidant of polysaccharides from Piptoporus betulinus Karst

Objective:To select the optimum extracting with the assistance of ultrasonic method of polysaccharides from Piptoporus betulinus Karst. Methods:The response surface analysis was employed to determine the optimum technological condition. Results : The optimum extraction conditions were as follows : extraction temperature 62℃, ultrasonic power 220 W, extraction time 35 min, ratio of water to raw material 16∶1mL/g and 2times. The yield of polysaccharides was 7.87% based on the above conditions. Conclusion:This method was suitable for the ultrasonic extraction and determination of polysaccharides from Piptoporus betulinus Karst.Compared with the traditional methods, ultrasonic extraction method was time-saving and efficiency.