刺苋总多酚提取工艺及其抗氧化性研究  

Extraction of Total Polyphenol from Amaranthus spinosus and Its Inoxidizability

作　　者：贤景春[1] 杨清[1] 郭香云[1] 

机构地区：[1]泉州师范学院化学与生命科学学院,福建泉州362000

出　　处：《贵州农业科学》2011年第1期194-196,共3页Guizhou Agricultural Sciences

基　　金：泉州市科技计划项目(2007N4);泉州师范学院硕士学位授权立项学科资助

摘　　要：为给刺苋的研究与开发提供理论基础,对刺苋总多酚提取工艺条件进行了优化,并考察了其对羟基自由基的清除效果。结果表明:刺苋中总多酚最佳提取工艺条件为:乙醇浓度60%,浸提时间1 h,料液比为1∶10,提取温度40℃。在最佳工艺条件下,刺苋中总多酚提取量可达4.89 mg/g。从刺苋中提取的总多酚对羟基自由基有很强的清除能力,当总多酚浓度为2.5μg/mL时,抑制率可达60%。The extraction technology of total polyphenol in Amaranthus spinosus was optimized and the effect of scavenging hydroxyl radicals was studied to lay the foundation of theoretical basis for research and development of Amaranthus spinosus.The results showed that the optimum extraction technological condition was 60% ethanol,1∶10 material-liquid ratio,40℃ extraction temperatre and 1h extraction time.The extraction rate of total polyphenol from Amaranthus spinosus can reach 4.89mg/g under the optimum extraction technology.The rate of scavenging hydroxyl radicals can be up to 60% when total polyphenol concentration is 2.5μg/mL

关 键 词：刺苋 多酚 抗氧化性 

分 类 号：S567.9[农业科学—中草药栽培]