A Study on the Ultrasonic Extraction and Antioxidant Activity of Lychee Pericarp Polysaccharides

• Published in: Asian agricultural research Vol. 8; no. 7; pp. 61 - 63
• Main Authors: Zhao, Dandan, Chen, Shengyu, Ling, Shaoming, Shi, Bingfang, Zhang, Jinlei, Li, Li
• Format: Journal Article
• Language: English
• Published: Cranston Wu Chu (USA-China) Science and Culture Media Corporation 01.07.2016
• Subjects: activity; extraction;Antioxidant; Lychee; pericarp; polysaccharides;Ultrasonic
• ISSN: 1943-9903

The aim was to optimize ultrasonic extraction conditions and study antioxidant activities of lychee pericarp polysaccharides. The effects of extraction temperature,time,ultrasonic power,solid-liquid ratio on polysaccharides yield were investigated by single-factor experiment and orthogonal experiment to obtain optimum extraction conditions; the antioxidant activities of lychee pericarp polysaccharides were evaluated by the total antioxidant activity. Optimum extraction process was under extraction temperature of 80 ℃,extraction time of 2. 5 h,ultrasonic power of 180 W,solid-liquid ratio of 1∶ 25 g / m L; the total antioxidant activity was increased with the increasing concentration of polysaccharides. The extraction process is simple and efficient. The extraction rate of lychee pericarp polysaccharides with antioxidant activities is high.