超临界CO2和微波萃取茶叶籽油工艺研究

食品科学 ›› 2008, Vol. 29 ›› Issue (10): 281-285.

超临界CO2和微波萃取茶叶籽油工艺研究

麻成金, 黄群, 吴道宏, 陈功锡, 朱杜鹃, 黄昌松, 向勇平

吉首大学食品科学研究所；吉首大学植物保护与利用湖南省高校重点实验室；湖南省古丈县科技局；湖南省古丈县茶叶事业管理局；

出版日期:2008-10-15 发布日期:2011-12-08

Study on Extraction Technologies of Tea Seed Oil by Microwave and Supercritical CO2

MA Cheng-Jin, HUANG Qun, WU Dao-Hong, CHEN Gong-Xi, ZHU Du-Juan, HUANG Chang-Song, XIANG Yong-Ping

1.Institute of Food Science,Jishou University,Jishou 416000,China; 2.Key Laboratory of Plant Resources Conservation and Utilization of Hunan Province,Jishou University,Jishou 416000,China; 3.Science and Technology Bureau of Guzhang County,Guzhang 416300,China; 4.Tea Project Management Bureau of Guzhang County,Guzhang 416300,China

Online:2008-10-15 Published:2011-12-08

摘要/Abstract

摘要： 通过微波萃取和超临界CO2(SC-CO2)萃取茶叶籽油的正交试验,考察影响萃取效果的主要因素,探讨最佳萃取工艺条件。超临界CO2萃取的优化工艺条件为:萃取压力35MPa、萃取温度45℃、萃取时间80min、分离温度30℃、CO2流量25～35kg/h,原料粉碎度40目,在此条件下油脂得率为28.07%。微波萃取优化工艺条件为:以环己烷为萃取剂,原料粉碎度40目,溶剂与物料质量比值为5.0,微波功率700W,每次微波辐射时间50s,微波累计辐射6次,在此条件下油脂得率为27.16%。并比较不同提取方法对油脂得率和油脂品质的影响。结果表明,微波萃取所需时间较短,超临界CO2萃取所得茶叶籽油的品质较优,是提取优质茶叶籽油的首选方法。

关键词: 茶叶籽油, 超临界CO2萃取, 微波萃取, 工艺条件, 理化指标

Abstract: The supercritical CO2 (SC-CO2) and microwave were used to extract teaseed oil respectively,and their extraction conditions were optimized by orthogonal test respectively. The optimal SC-CO2 extraction conditions are determined as follows: extraction pressure 35 MPa,extraction temperature 45 ℃,separation temperature 30 ℃,extraction time 80 min,material particle size 40 meshes and CO2 flow rate 25～35 kg/h.The optimal microwave extraction conditions are determined as follows: cyclohexane as extraction solvent,ratio of solvent to material 5.0,microwave power 700 W,radiation time 50 s,radiation times 6 and material particle size 40 meshes. The yields of tea seed oil obtained by SC-CO2 and microwave are 28.07% and 27.16 %,respectively. The extraction time by microwave is shorter than that by SC-CO2,while the quality of tea seed oil by SC-CO2 is better than that by microwave. So the SC-CO2 extraction is a better technique for extracting oil from tea seed.

Key words: tea seed oil, SC-CO2 dioxide extraction, microwave extraction, technological condition, physics and chemistry index

麻成金, 黄群, 吴道宏, 陈功锡, 朱杜鹃, 黄昌松, 向勇平. 超临界CO2和微波萃取茶叶籽油工艺研究[J]. 食品科学, 2008, 29(10): 281-285.

MA Cheng-Jin, HUANG Qun, WU Dao-Hong, CHEN Gong-Xi, ZHU Du-Juan, HUANG Chang-Song, XIANG Yong-Ping. Study on Extraction Technologies of Tea Seed Oil by Microwave and Supercritical CO2[J]. FOOD SCIENCE, 2008, 29(10): 281-285.

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