食品科学2012，Vol.33Issue(6)：24-28,5.
微波辅助提取银杏叶多糖工艺及其体外抗氧化活性研究
Optimization of Microwave-assisted Extraction Process for Polysaccharides from Ginggo biloba Leaves and Anti-oxidant Activity in Vitro
陈义勇 1冯燕红1
作者信息
- 1. 常熟理工学院生物与食品工程学院,江苏常熟215500
- 折叠
摘要
Abstract
Orthogonal array design method was applied to optimize the microwave-assisted water extraction of polysaccharides from Ginggo biloba leaves（GBLP） in order to maximize polysaccharide yield.Meanwhile,the antioxidant activity in vitro of polysaccharides from Ginggo biloba leaves was assessed by DPPH,hydroxyl and superoxide anion free radical scavenging assays and compared with vitamin C.The results showed that the optimal extraction conditions were microwave power of 480 W,material-to-liquid ratio of 1：30（g/mL）,and microwave treatment time of 8 min.Under these conditions,the extraction yield of polysaccharides was up to 14.70%.The extract obtained had a powerful scavenging activity against DPPH and hydroxyl free radicals in a concentration-dependent manner but a weak superoxide anion free radical scavenging activity with no significant concentration-dependent relationship.关键词
微波辅助提取/银杏叶多糖/体外抗氧化活性Key words
microwave-assisted extraction/polysaccharides from Gingko biloba leaves/antioxidant activity分类
化学化工引用本文复制引用
陈义勇,冯燕红..微波辅助提取银杏叶多糖工艺及其体外抗氧化活性研究[J].食品科学,2012,33(6):24-28,5.
