分子蒸馏分离超临界CO2萃取的米槁精油及其成分分析

为了更好地研究米槁精油的化学成分,用分子蒸馏分离超临界CO2流体萃取的米槁精油,通过改变蒸馏温度和压力,共得到12个馏分。用GC-MS分析其化学成分,共鉴定出98个化学成分,在其馏分中首次检测出朱栾倍半萜、榧叶醇等44个新组分。与传统的蒸馏和柱层析分离方法相比,分子蒸馏技术具有分离快、不破坏其化学组成、没有组分流失的优点,是分离米槁精油组分的有效方法。该文报道工作的新颖性,已为贵州省科学技术情报研究所2007年4月30日出具的第200752001178号《科技查新报告》所证实。

Using Molecular Distillation to Separate Essential Oil Extracted from Migao by Supercritical CO2 and Its Component Analysis

Molecular distillation(MD) was used to separate the essential oil extracted by supercritical CO2 fluid extraction(SFE) from Cinnamomum Migao H.W.Li(Migao),and 12 fractions were obtained at different evaporating temperatures and pressures.Its components were analyzed by GC-MS and 98 compounds were identified in total,in which,44 compounds,such as valencene and torreyol,were identified for the first time in the fractions obtained by MD from essential oils.The results show that,comparing with traditional methods,such as distillation and column chromatography,MD is a quick and efficient separation method without damage to the components of essential oil.The originality of those works in the paper can be verified from the information retrieval report,No.200752001178,provided by Guizhou province Information Institute for Science and Technology on April 30,2007.