HS-SPME-GC-MS法分析英红九号与山苏共发酵茶的香气成分

2021-12-09 07:09:07刘慧清吴巨贤陈海彬吴晓蓉黄百祺罗兴勰
食品安全导刊 2021年11期

刘慧清 吴巨贤 陈海彬 吴晓蓉 黄百祺 罗兴勰

摘 要:为研究英红九号与山苏共发酵茶香气成分,采用顶空固相微萃取-气相色谱质谱联用法(HS-SPME-GC-MS)结合数据库检索对香气进行成分鉴定。结果表明,英红九号中共鉴定出53种化合物,英红九号与山苏共发酵茶中鉴定出52种化合物,两种茶共有35种香气成分,包括1种烯烃类、2种醛类、10种醇类、3种酯类、14种烷烃类、3种酮类和1种胺类。其中共发酵茶中独有且相对含量较高的香气成分分别为氯代十八烷(3.09%)、壬醛(2.33%)、N-苯基-3-吡啶-2-基丙酰胺(2.32%)、西松烯(2.3%)。本研究是首次针对英红九号与山苏共发酵茶的研究结果,可为茶叶新品种研发提供科学依据。

关键词:英红九号;山苏;共发酵;HS-SPME-GC-MS;香气成分

Analysis of Aroma Compounds in Yinghong No.9 Fermented with Asplenium Nidus by HS-SPME-GC-MS

LIU Huiqing1, WU Juxian2*, CHEN Haibin2, WU Xiaorong2, HUANG Baiqi2, LUO Xingxie2

(1. Jiaoling Administration for Market Regulation, Meizhou 514100, China; 2. Guangdong Polytechnic of Science and Trade, Guangzhou 510430, China)

Abstract: The composition of aroma compounds in Yinghong NO.9 co-fermented  lwith Asplenium nidus were analyzed by headspace solid-phase microextraction and gas chromatography-mass spectrometry (HS-SPME-GC-MS) combined with computer search. The results showed that a total of 53 compounds were identified in Yinghong No. 9, and 52 compounds were identified in the new tea co-fermented with Asplenium nidus. 35 aroma components were identified in both teas, including 1 olefin, 2 aldehydes, 10 alcohols, 3 esters, 14 alkanes, 3 ketones and 1 amine. Among them, the unique and relatively high aroma components in co-fermented tea are Chlorooctadecane (3.09%), Nonanal (2.33%), and N-phenyl-3-pyridine-2-yl propionamide(2.32%), Cepinene (2.3%).Its the first research result on Asplenium nidus tea, which can provide a scientific reference for the development of new tea.

Keywords: yinghong NO.9; asplenium nidus; co-fermentation; HS-SPME-GC-MS; aroma compounds

山苏(Asplenium nidus),也称鸟巢蕨,属于铁角蕨科(Aspleniaceae),草蕨属(Neottopteris J.Sm)[1],常见于热带、亚热带地区,其老叶常制作为山苏茶叶,深受人们的喜爱。广东英德的英红九号红茶因其外形条索肥壮圆紧,色泽乌润显毫,汤色红浓明亮、香纯高长、滋味特浓强。但是随着英红九号种植面积不断扩大,茶叶产量大大增加,英红九号茶叶出现滞销现象[2]。本项目在制作英红九号红茶时创新性地加入山苏叶,制备成英红九号与山苏共发酵茶,并采用顶空固相微萃取-气相-质谱联用(HS-SPME-GC-MS)技术分析英红九号及英红九号与山苏共发酵茶的揮发性成分,为英红九号茶叶新品种的研发提供科学依据。

1 材料与仪器

1.1 实验材料

山苏叶由清远市荣盛农业科技发展有限公司提供,英红九号鲜叶由英德市乐品农业有限公司提供。……

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