摘要
【目的】分析不同茶园武夷岩茶水仙的关键呈香物质,揭示不同产区武夷岩茶香气的差异性,为武夷岩茶的品质提升提供参考依据。【方法】采用顶空固相微萃取(HS-SPME)结合气相色谱—质谱(GC-MS)对正岩区(百花岩、水帘洞)、半岩区(梅子桥、燕子窠)、洲茶区(上梅、黄土)3个茶区6个茶园水仙的挥发性化合物进行分离、鉴定,通过正交偏最小二乘判别分析(OPLS-DA)筛选关键呈香物质,结合香气活力值(OAV)分析不同产区茶园水仙香气的差异性。【结果】6个茶园水仙样品中共检测到101种挥发性化合物,包括醇类12种、醛类14种、酸类5种、酮类12种、烷烃类3种、烯烃类9种、杂环化合物10种、酯类26种、其他类10种;6个茶园水仙样品共有挥发性化合物56种;醇类是水仙香气的主要成分。结合OAV分析,筛选出15种关键呈香物质,分别为β-紫罗兰酮、2,4-癸二烯醛、香豆素、癸醛、香叶基丙酮、α-紫罗兰酮、反式-橙花叔醇、β-环柠檬醛、橙花醇、苯乙醇、藏红花醛、茉莉酮、茉莉酸甲酯、苯乙醛、反式异丁香酚。百花岩和水帘洞茶园水仙的关键呈香物质分别有11和12种,均以花果香为主,甜香、青香、木香为辅;梅子桥、燕子窠、上梅和黄土茶园水仙的关键呈香物质分别有15、15、15和14种,以花香为主,蜡脂气、药草香、果香为辅。【结论】OPLS-DA结合OAV分析,对6个茶园筛选出15种关键呈香物质;不同茶区香气特征有差异,正岩区以花果香为主,半岩区和洲茶区以花香为主。
【Objective】This study aimed to analyze the key aroma substances of the Wuyi Rock Tea Shuixian of diffe-rent tea gardens,reveal the aroma differences of Wuyi Rock Tea of various production areas,so as to provide a reference basis for the quality improvement of Wuyi Rock Tea.【Method】Volatile compounds of Shuixian Tea of six tea gardens in three production areas(Zhengyan District:Baihuayan and Shuilian,Banyan District:Meiziqiao and Yanzike,Zhoucha District:Shangmei and Huangtu)were isolated and identified by headspace solid-phase microextraction(HS-SPME)with gas chromatography-mass spectrometry(GC-MS).Key aroma substances were screened via orthogonal partial least squares-discriminant analysis(OPLS-DA),and the aroma differences of Shuixian Tea of tea gardens of different production areas were analyzed according to odor activity value(OAV).【Result】A total of 101 volatile compounds were detected in the Shuixian Tea samples from 6 tea gardens,including 12 alcohols,14 aldehydes,5 acids,12 ketones,3 alkanes,9 alkenes,10 heterocyclic compounds,26 esters,and 10 other compounds;56 common volatile compounds were shared by the Shuixian Tea samples from the 6 tea gardens;alcohols were the were the main components for the aroma.Based on OAV analysis,15 key aroma substances were screened:β-ionone,2,4-decadienal,coumarin,decanal,geranylacetone,α-ionone,trans-nerolidol,β-cyclocitral,nerol,phenethyl alcohol,safranal,jasmonone,methyl jasmonate,phenylacetaldehyde,and trans-isoeugenol.11 and 12 key aroma compounds identified in the teas from Baihuayan and Shuiliandong,respectively,mainly demonstrated flowery and fruity notes,secondarily demonstrated sweet,green,and woody notes;15,15,15,and 14 key aroma compounds were found in Meiziqiao,Yanzike,Shangmei,and Huangtu numbered,respectively,mainly demonstrated flowery notes,secondarily demonstrated waxy,herbaceous,and fruity notes.【Conclusion】According to OPLS-DA with OAV,15 key aroma compounds are screened from 6 tea gardens;aroma characteristics also differ among production areas:Zhengyan District mainly shows floral-fruity notes,and Banyan District and Zhoucha District mainly show flowery notes.
作者
史峰
张嘉恒
蒋文键
马春华
SHI Feng;ZHANG Jia-heng;JIANG Wen-jian;MA Chun-hua(College of Food Science,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China;College of Tea and Food Science,Wuyi University,Nanping,Fujian 354300,China)
出处
《南方农业学报》
北大核心
2025年第10期3093-3105,共13页
Journal of Southern Agriculture
基金
福建省科技厅引导性项目(2023N0018)
南平市科技项目(N2021Z006)。
