摘要
采用溶剂提取法对藤茶总多酚物质的提取工艺条件及其抗氧化能力进行研究。结果表明,藤茶总多酚的最佳提取条件为体积分数50%丙酮溶液、料液比1:25(g/mL)、75℃提取1.5h,此时总多酚得率21.82%。藤茶总多酚有较强的还原能力,对超氧阴离子自由基、羟自由基和DPPH自由基均有良好的清除效果,并呈明显的量效关系。
The extraction and antioxidant activity of total polyphenols from Ampelopsis grossedendata were studied in this paper.The optimal extraction conditions were achieved to be extraction at 75 ℃ for 1.5 h with a 25-fole volume of 50% acetone aqueous solution as the extraction solvent.Under the optimal extraction conditions,the yield of total polyphenols was 21.82%.Total polyphenols from Ampelopsis grossedendata showed high reducing power and excellent scavenging effect on hydroxyl,superoxide anion and DPPH free radicals in a dose-dependent manner.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2011年第6期127-130,共4页
Food Science
基金
湖北省自然科学基金项目(2006ABA036)
湖北省科技厅创新团队项目(2009CDA155)
关键词
藤茶
总多酚
提取
抗氧化
Ampelopsis grossedendata
total polyphenols
extraction
antioxidant activity
