ABSTRACT
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.