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.
出处
《农产品加工（下）》
2014年第3期39-41,45,共4页
Farm Products Processing
关键词
绞股蓝
超声波辅助提取
多酚
羟基自由基
gynostemma pentaphylla
ultrasonic-assisted extraction
polyphenol
hydroxyl radical
