响应面法优化分子蒸馏技术纯化孜然精油工艺  

Optimization of Purification Process for Essential Oil from Cumin Oleoresin by Molecular Distillation

作　　者：胡雪芳[1] 甘芝霖[1] 李淑燕[1] 陈芹芹[1] 梁峥[1] 倪元颖[1] 

机构地区：[1]中国农业大学食品科学与营养工程学院,北京100083

出　　处：《食品科学》2011年第12期139-144,共6页Food Science

基　　金：农业部科技成果转化资金项目(2006GB23600453)

摘　　要：采用分子蒸馏技术对孜然油树脂进行纯化研究,考察蒸馏温度与蒸馏压力对孜然精油得率及枯茗醛含量的影响。应用响应面法对其工艺参数进行优化,得到了孜然精油得率及枯茗醛含量最佳操作条件和二次响应面模型。结果表明,蒸馏温度和蒸馏压力对精油得率和枯茗醛含量的影响都达到极显著水平;通过数值优化法综合考虑2个试验指标,得到的最优纯化工艺条件为蒸馏温度77℃、蒸馏压力122Pa,在此条件下,精油得率为34.24%,枯茗醛含量为30.43%。Molecular distillation（MD） was used to purify essential oil from cumin oleoresin,obtained by supercritical carbon dioxide fluid extraction,and two important process parameters including temperature and pressure were optimized by response surface methodology for maximizing oil yield and cuminal content.Two quadratic regression model equations describing oil yield or cuminal content as a function of the two process parameters were established.Both parameters had a highly significant effect on oil yield and cuminal content.Based on numerical optimization and comprehensive considerations of oil yield and cuminal content,the optimal distillation conditions were temperature of 77 ℃and pressure of 122 Pa,resulting in an oil yield of 34.24% and a cuminal content of 30.43%.

关 键 词：分子蒸馏 纯化 孜然油树脂 孜然精油 响应面 

分 类 号：TS255.36[轻工技术与工程—农产品加工及贮藏工程]