响应面优化花生壳多酚类化合物超声-微波辅助提取工艺及其抗氧化活性

Optimization of Ultrasonic Microwave Assisted Extraction Technology of Polyphenolic Compounds in Peanut Shell by Response Surface Methodology and Its Anti-oxidation Activity

以乙醇作为提取溶剂,研究了超声-微波辅助提取花生壳中多酚的最佳工艺条件。在单因素试验的基础上,通过响应面分析确定了超声-微波辅助提取花生壳多酚类化合物的最佳工艺条件为:乙醇体积分数为70%,微波作用时间为90 s,料液比为1∶20,此条件下多酚类物质的提取率为6.61%。体外抗氧化作用表明花生壳多酚化合物对三种食用油脂均有良好的抗氧化效果,且对猪油具有较强的抗氧化作用。

Using alcohol as extract dissolvent,the optimal conditions of ultrasonic microwave assisted extraction to extract polyphenol from peanut shell were investigated.Based on the single factor experiment,the optimum conditions of ultrasonic microwave assisted extraction technology of polyphenolic compounds in peanut shell by response surface methodology were as follows： ethanol concentration was 70%,extraction time was 90 s,ratio of material to liquid was 1∶20 and the extraction rate of polyphenols could get 6.61%.Antioxidant activity of polyphenolic compounds in vitro showed that they had good antioxidation effects on three edible oils;furthermore,the effect on lard was stronger.