绞股蓝多酚的提取工艺及抗氧化活性研究  

Extraction Process of Polyphenols and Antioxidant Activity of Gynostemma Pentaphyllum

作　　者：张颖娜[1] 田呈瑞[1] 范巧宁[1] 马婷婷[1] 赵珮[1] 

机构地区：[1]陕西师范大学食品工程与营养科学学院,陕西西安710062

出　　处：《农产品加工（下）》2014年第3期39-41,45,共4页Farm Products Processing

摘　　要：在单因素试验的基础上,利用正交试验得到多酚的最佳工艺条件为乙醇体积分数60%,超声功率280 W,料液比1∶40,提取时间50 min,总多酚提取率为11.89 mg/g。同时测定多酚清除羟基自由的能力,结果表明绞股蓝多酚对羟基自由基有良好的清除作用,可作为天然抗氧化剂进一步开发和利用。On the basis of single factor experiment, the optimum process conditions of obtain polyphenols using orthogonal test is： ethanol concentration 60%, ultrasonic power 280 W, material liquid ratio 1∶40, extraction time 50 min, extraction rate of total polyphenol is 11.89 mg/g. The ability of scavenging hydroxyl free, polyphenols and simultaneous determination of the results： Gynostemma pentaphyllum polyphenols have good scavenging effect on hydroxyl free radicals, which can be used as natural antioxidants of further development and utilization.

关 键 词：绞股蓝 超声波辅助提取 多酚 羟基自由基 

分 类 号：R285[医药卫生—中药学]