Abstract: The garlic oil from Allium sativumL. cultivated in Qujing, Yun-nan, China was investigated with GC and GC-MS; 20 compounds were identified and 5 of them never yet reported for the garlic oil, namely, 6-methyl-l-thi-2 ,4 -cyclohcxadien.e, 5 -methyl- 1 , 2 -dithi- 3 -cyclopentene, 4 -methyl- 1 , 2 -dithi -cyclopentene, 4 -vinyl- 1,2,3 -trithi- 5 -cyclohexene and Allyl methyl pentasu-Ifide. The main components are 3-vinyl-1, 2-dithi-5-cyclohexene and 3-vinyl - 1 , 2 -dithi- 4 -cyclohexene.

Key words: Allium sativum

摘要： 本文对云南曲靖产大蒜（Allium sativum L.) 蒜油用气相色谱和色谱一质谱法进行了分析，鉴定了20个化合物。其中：6-甲基-1-硫杂-2，4-环己二烯（6－methyl- l-thi-2,4－cyclohexadiene），5-甲基－1，2－二硫杂-3-环戊烯（5－methyl-l,2－dithi－3－cyclopentene），4-甲基-1,2-二硫杂-3-环戊烯（4－methyl－1，2－dithi－3－cyclo－pentene），4-乙烯基-1，2，3-三硫杂-5-环己烯（4－vinyl，2,3-trithi-5－cyclohexene）及甲基烯丙基五硫醚（allyl methyl pentasulfide）等为蒜油中首次报道的化合物。

关键词: 大蒜, 蒜油, 气相色谱和色谱-质谱, 3-乙烯基-1, 2-二硫杂-5-环已烯, 3-乙烯基-1, 2-二硫杂-4-环已烯