正交设计优化油橄榄果渣多酚提取工艺

摘要

以丙酮为溶剂，采用加热回流提取法，通过单因素试验考察了浸提温度、丙酮浓度、料液比和浸提时间对油橄榄果渣多酚提取率的影响，并在此基础上，通过正交试验设计得到了油橄榄果渣中多酚的最优提取工艺：浸提温度为60℃，丙酮浓度为75%，料液比为1∶13（g/mL），浸提时间为4 h，优选工艺提取的多酚含量为0.2448%。%Through single factor test, the effects of extraction temperature,acetone concentration,solid-liquid ratio,extraction time on the polyphenols from olive(Olea europaea L.) pomace by heating reflux with acetone as solvent were investigated.On the basis of single factor experiment, through the orthogonal test, the extraction conditions were optimized. The optimal parameters for this method were as follows:the olive pomace was ex-tracted by acetone concentration of 75%with solid-liquid ratio of 1∶13 (g/mL) at 60℃for 4 h, and the ex-traction yield was 0.244 8%.