摘要
Three steam distillation devices (D-1, D-2 and D-4) or one simultaneous distillation (D-3, water-diethyl ether) as well as the process of CO2-SFE (Supercritical fluid extraction) were adopted in extraction of essential oils from Chinese-fir (Cunninghamia lancedata (Lamb) Hook.) and the chemical components of the extracted essential oil were analyzed by Gas chromatograph-MS analyses. The results showed that the essential oil could be almost extracted out within 2 hours and the device-3 had the highest extraction efficiency. The major chemical component of the oil was cedrol. The yield of the extracted essential oils from Chinese fir decreased gradually with the increase of the distillation time. The best condition for extraction by means of CO2-SFE is 100 kg·cm?2 in pressure and 40°C in temperature for. Keywords Chinese fir - Essential oil - Cedrol - Supercritical fluid extraction CLC number S781.4 Document code A Foundation item: This paper was support by the Key Foundation Research Project (G1999016001) of China and the Japan International Cooperation AgencyBiography: HUANG Luo-hua (1957-), male, Research associate, Research Institute of Wood Industry, Chinese Academy of forestry, Beijing 100091, P. R. ChinaResponsible editor: Song Funan
本文研究了杉木精油的提取方法及其化学成分。采用了四种蒸馏装置来提取杉木精油。结果表明:大部分精油在蒸馏的2小时内被提取出;装置3具有较高的提取效率;杉木精油的主要化学组成为松柏醇;精油获得率随蒸馏时间段的增加而逐渐减小;采用CO2-超临界流体萃取法提取杉木精油,压力为100kg/cm2和温度为40C时为其最佳条件。图1表4参10。
基金
The Key Foundation Research Project (G1999016001) of China and the Japan International Cooperation Agency
