Effect of Ultrasonic-assisted Extraction on Antioxidant Activity and Molecular Weight Distribution of Polysaccharides from Schisandra chinensis (Turcz.) Baill
The molecular weight distribution and antioxidant activity of polysaccharides from Schisandra chinensis (SCP) extracted by hot-water and ultrasonic pretreatment assisted were investigated, including scavenging activities against hydroxyl radical, l,ldiphenyl-2-picrylhydrazyl (DPPH) and superoxide anion. Obvious differences in molecular weight distribution and antioxidant activity between the hot-water extracts and ultrasonic pretreatment assisted extracts were observed. The SCP with ultrasonic pretreatment was degraded causing an increase of fractions. Both of SCP showed a noticeable scavenging activity against hydroxyl radical and DPPH, and the antioxidant activity of SCP, with ultrasonic pretreatment, was higher. However, superoxide anion scavenging activity of SCP was hardly observed.
polysaccharide antioxidant activity molecular weight ultrasonic Schisandra chinensis
Yanqun Wang Xianjun Meng Bin Li Xiyun Sun Qi Zhang
College of Food Science Shenyang Agricultural University, Shenyang, China
国际会议
上海
英文
1220-1224
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）