固相微萃取-气相色谱/质谱结合化学计量学方法分析四种茶油的挥发性成分

Journal of Analytical Science(2018)

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Abstract
采用固相微萃取-气相色谱/质谱(SPME-GC/MS)联用技术对4种茶油的挥发性成分进行测定,共鉴别出81种挥发性成分,其中精制茶油含31种共有成分,粗制茶油含43种共有成分,外用茶油含33种共有成分,过期茶油含50种共有成分.4种茶油中醛类挥发性成分相对含量较高,是构成茶油风味的主要挥发性成分.利用主成分分析、聚类分析两种化学计量学方法分析评价了4种茶油挥发性成分的差异,前6种主成分累积贡献率达到79.6%,且4种茶油得到了较好的聚类.
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