基于HS-SPME-GC-MS分析“玉米香”保靖黄金茶挥发性成分  

Analysis of Volatile Components of"Corn Fragrance"in Baojing Huangjin Tea Based on HS-SPME-GC-MS

作　　者：黄怀生[1] 黎娜[1] 钟兴刚[1] 石建云 李健权[2] 粟本文[1] HUANG Huaisheng;LI Na;ZHONG Xinggang;SHI Jianyun;LI Jianquan;SU Benwen(Tea Research Institute,Hunan Academy of Agricultural Sciences,Changsha 410125,China;Hunan Academy of Agricultural Sciences,Changsha 410125,China;Hunan Huanxi Tea Industry Co.,Ltd.,Baojing 416500,China)

机构地区：[1]湖南省农业科学院茶叶研究所,湖南长沙410125 [2]湖南省农业科学院,湖南长沙410125 [3]湖南欢喜茶业有限公司,湖南保靖416500

出　　处：《茶叶通讯》2025年第1期70-77,共8页Journal of Tea Communication

基　　金：中央基层农技推广体系改革与建设(湘财农指〔2023〕47号);湖南省农业科技创新资金(2022CX35);湖南省科技重点研发项目(2019NK3009)。

摘　　要：保靖黄金茶品质特征“香、绿、爽、浓”,“玉米香”为其中一类典型代表产品。采用HS-SPME-GC-MS分析“玉米香”保靖黄金茶挥发性成分的构成,共获得39个挥发性化合物,分别为醇类13个、醛类3个、酮类3个、酸类1个、酯类10个、烯烃类7个和其他2个。其中,相对含量由高到低依次为醇类(78.57%)、酯类(5.89%)、烯烃类(5.58%)、酮类(5.10%)、醛类(2.05%)和其他类(1.86%),酸类最低为0.96%。以“清香”保靖黄金茶为对照,通过最小二乘法(PLS)和聚类分析进行差异化合物筛选,获得“玉米香”保靖黄金茶主要呈香物质为香叶醇、己酸己酯、反-3,7-芳樟醇氧化物Ⅱ、顺-3-己烯酸-顺-3-己烯酸酯、氧化芳樟醇Ⅱ(呋喃型)、水杨酸甲酯、柠檬烯、壬酸、二甲基戊酸甲酯、反-β-罗勒烯、苯甲醛、苯甲醇、辛醇、顺-己酸-3-己烯酯、橄榄醇、氧化芳樟醇Ⅰ(呋喃型)、苯甲酸叶醇酯、β-紫罗酮、壬醛、α-古巴烯、β-丁香烯、反-戊酸-2-己烯酯、4,8-二甲基-1,3,7-任三烯、反-丁酸-3-己烯酯、二甲基硫醚等化合物。The quality characteristics of Baojing Huangjin Tea are"fragrant,green,refreshing,and strong",among which"corn fragrance"is a typical representative product of green tea.The composition of volatile components of"corn fragrance"in Baojing Huangjin Tea was analyzed by using HS-SPME-GC-MS,and a total of 39 volatile compounds were obtained,including 13 alcohols,3 aldehydes,3 ketones,1 acid,10 esters,7 olefins,and 2 others.Among them,the relative content is as follows:alcohols(78.57%),esters(5.89%),olefins(5.58%),ketones(5.10%),aldehydes(2.05%),others(1.86%),and acids with the lowest content of 0.96%.Using Baojing Huangjin Tea with faint scent as a control,differential compound screening was carried out through least squares(PLS)and cluster analysis.The main aroma compounds of“corn fragrance”in Baojing Huangjin Tea were identified as vanillin,hexanoate,trans-3,7-linalool oxide II,cis-3-hexene-3-hexenoate,oxidized linalool II(furan type),methyl salicylate,limonene,nonanoic acid,dimethyl pentanoate,trans-β-basilene,benzaldehyde,benzyl alcohol,octanol,cis-3-hexene-1-hexanoate,olive alcohol,oxidized linalool I(furan type),benzyl alcohol ester,β-purple ketone,nonanal,α-Cuban ene,β-syringine,trans cinnamaldehyde.20 compounds including 2-hexenyl valerate,4,8-dimethyl-1,3,7-triethylene,trans-butyl-3-hexenyl butyrate,dimethyl sulfide,etc.

关 键 词：茶 保靖黄金茶 茶叶品质 挥发性成分 玉米香 GC-MS 

分 类 号：S571.1[农业科学—茶叶生产加工] O657.63[农业科学—作物学] TS272.7[理学—分析化学]