食品工业科技2025，Vol.46Issue(6)：315-324,10.DOI:10.13386/j.issn1002-0306.2024050077
HS-SPME-GC-MS结合OAV对乌龙茶树品种制花香型红茶的香气评价
HS-SPME-GC-MS Coupled with OAV to Evaluate the Aroma of Flowery Black Tea Made from Oolong Tea Varieties
摘要
Abstract
To analyze the difference in aroma components and aroma characteristics of flowery black tea made from oolong tea varieties.The aroma components extracted with headspace-solid phase microextraction-gas chromatography-mass spectrometry(HS-SPME-GC-MS),and odor activity value(OAV)was used to determine the key and modified flavor components.Combined with hierarchical clustering analysis(HCA),principal component analysis(PCA),orthogonal partial least squares discrimination analysis(OPLS-DA)and sensory evaluation,the aroma of flowery black tea was comprehensively evaluated.Results showed that 22 key and modified flavor components were selected from 54 identified aroma components,hierarchical clustering divided them into five categories.The models of PCA(R2X(cum)=0.892,Q2(cum)=0.645)and OPLS-DA(R2X(cum)＞0.7,Q2(cum)＞0.9)had a high degree of fitting.The main difference components between traditional black tea and flowery black tea were linalool,linalool oxide I,linalool oxide Ⅱ and 2-methylbutyraldehyde.The main difference components between flowery black tea and oolong tea were β-cyclocitral,linalool oxide I,trans,trans-nona-2,4-dienal,hexanal,1-penten-3-one,linalool oxide Ⅱ,linalool and geraniol.Determination of flowery black tea aroma characteristics by OAV combined with chemometrics methods was consistent with the sensory results.The results of this experiment can clarify the differences in volatile substances in flowery black tea and provide for further optimization of volatile component analysis methods.关键词
乌龙茶树品种/花香型红茶/气味活度值/香气成分/正交偏最小二乘判别分析(OPLS-DA)Key words
oolong tea varieties/flowery black tea/odor activity value/aroma components/orthogonal partial least squares discrimination analysis(OPLS-DA)分类
轻工纺织引用本文复制引用
阳景阳,陈远权,梁贤智,王明释,骆妍妃,覃潇敏,廖春文,巫虹颖..HS-SPME-GC-MS结合OAV对乌龙茶树品种制花香型红茶的香气评价[J].食品工业科技,2025,46(6):315-324,10.基金项目
广西重点研发计划(桂科AB23026086) （桂科AB23026086）
广西农科院基本业务专项(桂农科2021YT164) （桂农科2021YT164）
广西农业科技创新联盟项目(桂农科盟202406-1). （桂农科盟202406-1）
