正交优化同时蒸馏萃取白胡椒精油的工艺研究

Orthogonal optimization of SDE technology of white pepper essential oil

本实验以市售白胡椒为原料,采用同时蒸馏萃取法萃取白胡椒精油,并考察了蒸馏萃取时间、料液比、颗粒破碎度3个因素对胡椒精油萃取得率的影响。实验结果表明:各因素对同时蒸馏萃取法提取胡椒精油得率影响的主次关系依次为:A>B>C,即萃取时间>料液比>破碎度,且萃取时间对胡椒精油的得率具有极显著的影响,料液比对得率有显著影响,破碎度对得率的影响相对不显著。同时蒸馏萃取法(SDE)萃取胡椒精油的最优工艺条件组合为A2B2C2,即蒸馏萃取时间3h、料液比1:30、颗粒破碎度60目,此条件下胡椒精油的得率为1.72%,优于其他条件组合。

In this experiment,commerical white pepper is used as raw materials by SDE to extract pepper essential oil,and three factors（the distillation extraction time,ratio of solid-liquid,pepper fragmentation） are investigated on obtaining the best yield of pepper essential oil.At the same time,results show that： the factors are set up by the three orthogonal gradients to study and find the best extraction processing of pepper essential oil.There have an effect on pepper essential oil yield,whose order of impact significance is： ABC,that is,extraction timeratio of solid-liquid pepper fragmentation.The variance analysis shows that： extraction time for the extraction has the most important impact,but solid-liquid ratio has more obvious effect than fragmentation on the yield of pepper essential oil.Its optimal extraction condition by SDE was A2B2C2.In other words,the distillation time was 3 hours,the ratio of solid-liquid was 1：30 and fragmentation was 60 mesh.Proven experiment suggested that this condition of pepper essential oil yield was 1.72%.This method is as same as means of conventional steam distillation for the extraction of essential oil and other volatile substances,and has more advantageous than the steam distillation method.