【摘要】 用超临界CO2 萃取技术提取白术挥发油 ,然后用分子蒸馏对所得的萃取物进行精分离 ,得到蒸出物 ;超临界萃取物收率为2.42 % （w） ,分子蒸馏蒸出物收率26.3% （w） ;对超临界萃取物和分子蒸馏蒸出物分别进行GC -MS分析 ,结果超临界萃取物检测出33个化合物 ,分子蒸馏蒸出物检测出27个化合物 ,主要成分均为2,7_二甲氧基₃,6_二甲基萘、γ_芹子烯、大根香叶烯等 ,但相对含量有区别更多还原

【Abstract】 Essential oil from Rhizoma Atractylodis Macrocephalae was extracted by supercritical fluid extraction（SFE）and the extractive separated by molecular distillation（MD）.The extraction yield of2.42%（w）and yield of distilled oil of26.3%（w）were obtained.The constituents of extractive and distilled oil were analyzed by gas chromatography-mass spectrometry.Thirty_three compounds from the extracttive and twenty_seven compounds from the distilled oil were identified,and their relative contents were determined by normalization method of area.The major constituents of both have been found to be2,7_dimethoxy₃,6_dimethyl naphthalene,γ_selinene and germacrene B etc.更多还原