GC-MS法分析得荣县光核桃仁油中脂溶性成分

摘要

AIM To analyze fat-soluble components of nuts oil from Prunus mira Koehne in Derong County.METHODS The nuts oil from P.mira was extracted by hot pressing method and then was isolated and identified by GC-MS,together with relative content determination of various compounds.The results were analyzed by cluster analysis and principal component analysis.RESULTS Twenty compounds were isolated from nuts oil in Duosong Village,with higher contents of β-sitosterol,trans-squalene,oleic acid hydroxypropyl ester,and one endemic compound (4-methyl nonane).Twenty-two compounds were isolated from nuts oil in Ridui Village,with higher contents of β-sitosterol,oleic acid,γ-tocopherol,and one endemic compound (cyclohexane,1,2,4-trimethyl-).Twenty-four compounds were isolated from nuts oil in Ronggong Village,with higher contents of oleic acid,β-sitosterol and trans-squalene.Twenty-two compounds were isolated from nuts oil in Zhangren Village,with higher contents of β-sitosterol,oleic acid,γ-tocopherol,and two endemic compounds (trans-2,4-decadienal and octacosanal).Ten batches of samples were divided into six types.The cumulative contribution rate of the first principal component was 81.86％ in Duosong Village.CONCLUSION Thirty-five compounds in nuts oil from P.mira in Derong County mainly contain oleic acid,β-sitosterol,trans-squalene,γ-tocopherol and vitamin E,with four endemic compounds.%目的 采用GC-MS法分析得荣县光核桃Prunus mira Koehne仁油中脂溶性成分.方法 热榨法榨取光核桃仁油,GC-MS法分离、鉴定,并测定各个化合物相对含有量,对结果进行聚类分析和主成分分析.结果 夺松村的光核桃仁油中有20个化合物,β-谷甾醇、反式角鲨烯和油酸羟丙基酯含有量较高,1个特有化合物(4-甲基壬烷);日堆村的有22个化合物,β-谷甾醇、油酸和γ-生育酚含有量较高,1个特有化合物(1,2,4-三甲基环己烷);绒贡村的有24个化合物,油酸、β-谷甾醇和反式角鲨烯含有量较高;张仁村的有22个化合物,以β-谷甾醇、油酸和γ-生育酚含有量较高,2个特有化合物(反式-2,4-癸二烯醛和二十八醛).10批样品分为6类.夺松村第一主成分的累积贡献率81.86％.结论 得荣县光核桃仁油有35个化合物,以油酸、β-谷甾醇、反式角鲨烯、γ-生育酚和维生素E为主,特有化合物4个.