摘要
主要研究超声波辅助草果精油提取优化工艺及其清除自由基作用,同时对正交试验进行方差分析,结果表明:各因素及模型对提取率的影响均达到了极显著水平,最佳工艺参数为提取次数为4次,料液比为1∶15(g/mL),乙醇浓度为75%,超声时间50 min。草果精油清除DPPH自由基、清除ABTS^+自由基及络合Fe^(2+)能力试验表明,草果精油在浓度2 mg/mL^10mg/mL的DPPH自由基清除率、ABTS^+自由基清除率及Fe^(2+)络合率都随着提取物的浓度增加而增大的变化趋势,但2 mg/mL草果精油清除ABTS^+自由基效果好于同浓度的BHT。
This paper mainly studies the ultrasonic assisted essential oils of Amomum tsao-ko extraction and optimization process and its effect on the free radicals,and variance analysis of orthogonal experiment,the results showed that the models and the factors influence on extraction yield were reached extremely significant level,the best process parameters：extraction times for four times,and solid-liquid ratio was 1 ∶15（g/mL）,75 % ethanol concentration,ultrasonic time 50 min. Essential oils of Amomum tsao-ko scavenging DPPH free radical,remove ABTS ＋ free radical and complexing ability of Fe^2＋ test showed that essential oils of Amomum tsao-ko at the concentration of 2 mg/mL-10 mg/mL of DPPH free radical clearance,ABTS＋ free radical clearance and Fe^2＋ complexing rate are the change trend of the activity was increased with the concentration of the extract,but 2 mg/mL essential oils of Amomum tsao-ko removal ABTS＋ free radical better than with the concentration of butylated hydroxyl toluene.
出处
《食品研究与开发》
CAS
北大核心
2017年第16期58-61,共4页
Food Research and Development
关键词
超声波
草果精油
自由基
ultrasonic assisted extraction（UAE）
essential oils of Amomum tsao-ko
free radical
