文中研究了山竹果皮中原花青素的超声辅助提取工艺条件。通过单因素试验分析超声提取过程中超声功率、料液比、乙醇浓度、提取时间和温度等因素对原花青素提取率的影响,在此基础上,采用L9(34)正交试验优选出山竹果皮中原花青素提取的最佳条件。结果表明:各因素对原花青素提取率的影响大小顺序为乙醇浓度(B)>温度(C)>料液比(A)>时间(D);最佳工艺条件为料液比为1∶30,乙醇体积分数60%,提取温度50℃,提取时间45 min,此条件下山竹果皮中原花青素的提取率为15.61%。

To study the extraction conditions for Proanthocyanidins assited by ultrasonic wave from Garcinia mangostana L peel.Effects of ultrasonic power,solid-liquid ratio,ethanol concentration,and extraction time and extraction temperature on the extraction rate were studied by single factor test.Then the optimum extraction condition was optimized by L9(34)orthogonal test.The influence order of these factors on the extraction rate of proanthocyanidins was:ethanol concentration(B)>extraction temperature(C)>solid-liquid ration(A)>extraction time(D).The optimal extraction condition was:solid-liquid ratio 1:30(g:mL),the concentration of ethanol 60%,the extraction time 30 minutes at 50℃.Under the optimum conditions,the yield of proanthocyanidins in Garcinia mangostana L peel was 15.61%.