用GC-MS分析不同方法提取的茶油脂肪酸

用超临界CO2、超声波、微波和机榨4种方法提取茶油，利用GC-MS分析茶油成分。结果表明：超临界CO2萃取的茶油与超声波和微波提取的主要化学成分几乎无差异，机榨茶油的化学成分与前3种的有一些差异，未测出维生素E和角鲨烯。超临界CO2萃取的茶油已达到国家成品茶油的一级标准，超临界CO2萃取法为提取茶油的较理想方法。

GC-MS Analysis of Fatty Acids from Tea-seed Oil Extracted by Different Methods

Seed oil from Camellia oleifera extracted with different methods (supercritical CO2, microwave, ultrasonic, and squeezing) was analyzed by GC-MS. Chemical composition of the seed oil extracted with the three methods was similar except squeezing. However, vitamin E and squalene were not found in the constituents extracted by squeezing. It is suggested that the extraction with supercritical CO2 is an ideal method by which the oil is up to the first degree of national standard. Physical and chemical properties, and the constituents of the oil extracted by these methods are tabulated.