食品科学2025，Vol.46Issue(8)：211-220,10.DOI:10.7506/spkx1002-6630-20241008-017
茶树品种对祁门红茶挥发性代谢谱及关键呈香物质的影响
Effect of Tea Cultivars on the Volatile Metabolite Profile and Key Odorants of Keemun Black Tea
摘要
Abstract
To investigate the effects of tea cultivars on the aroma quality and volatile profile of Keemun black tea(KBT),headspace solid-phase microextraction coupled with gas chromatography-mass spectroscopy(HS-SPME-GC-MS)was compare the differences in the volatile components of KBT made by traditional process from three tea cultivars,namely,'Qimenzhong'(KMZ),'Fuzao 2'(FZ2)and'Wancha 4'(WC4).Odor activity value(OAV),aroma character impact(ACI)value,aroma reconstitution and omission tests were used to identify the key odorants of KBT.The change of volatile components was also analyzed during KBT processing.By comparison with the National Institute for Standards and Technology(NIST)11 database,retention index calculation and comparison with referencestandards,102,75,and 88 volatiles were detected in KMZ,FZ2,and WC4 black tea samples,respectively,of which 11 were identified as key characteristic odorants based on OAV>1 and ACI>1%.Aroma reconstruction and omission experiments showed that six aroma-active compounds,namely,geraniol,trans-β-ionone,benzeneacetaldehyde,linalool,hexanal and phenylethyl alcohol,were the largest contributors to KMZ aroma.Their relative contents varied among the cultivars.The greatest changes in these key compounds occurred during withering and drying stages and their changing trends during the processing of KBT were relatively consistent among the cultivars.This study enriches the basic theory of KBT flavor quality and lays a theoretical foundation for aroma quality control and targeted processing of KBT.关键词
品种/祁门红茶/关键挥发性成分/代谢谱Key words
cultivar/Keemun black tea/key volatile components/metabolite profile分类
农业科学引用本文复制引用
刘亚芹,王辉,朱林,雷攀登,周汉琛..茶树品种对祁门红茶挥发性代谢谱及关键呈香物质的影响[J].食品科学,2025,46(8):211-220,10.基金项目
安徽省财政农业科技成果转化项目(2024ZH013) （2024ZH013）
安徽省农业科学院青年英才计划项目(QNYC-202119) （QNYC-202119）
现代农业产业技术体系建设专项(CARS-19) （CARS-19）
