网络出版日期: 2018-01-08
基金资助
湖北省农业科学院果树茶叶研究所青年科学基金项目(GCJJ201603);国家现代农业(茶叶)产业技术体系专项(CARS-23);湖北省重大科技创新计划项目(2014ABA023);湖北省农业科技创新中心资助项目(2016-620-000-001-032)
Analysis of Volatile Flavor Compounds in Qingzhuan Tea during Primary and Pile Fermentation Process
Online published: 2018-01-08
刘盼盼 , 郑鹏程 , 王胜鹏 , 等 . 青砖茶初制、渥堆过程中挥发性风味成分分析[J]. 食品与发酵工业, 2017 , 43(12) : 176 -183 . DOI: 10.13995/j.cnki.11-1802/ts.014144
Fresh tea leaves plunked from Chibiquntizhong in Chibi tea area were taken as raw materials to make Qingzhuan tea. Volatile components of Qingzhuan tea during the primary and pile fermentation process were analyzed using headspace solid-phase micro-extraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS). The result showed that 62 volatile compounds were identified from Qingzhuan tea samples, while 45, 41, 41, 40, 43, 42 and 48 compounds were identified from fresh leaves to the end of pile fermentation 7 samples in total. In theprevious stage of pile fermentation, aldehydes, alcohols, ethers and ketones had a relatively higher content. However, the relative amount of olefin aldehydes, ketones, methoxybenzene and furans significantly increased, alcohols and ethers obviously decreased which caused by microbial action during pile fermentation. Twelve high OAV (>1) ofβ-ionone, linalool, (Z)-4-heptenal, (E,Z)-2,6-nonadienal, decanal, (E)-2-nonenal, (E,E)-2,4-heptadienal, 1-octen-3-ol, nonanal,α-ionone, 1-penten-3-one and 2-octen-1-al indicated their importance to the aroma character of Qingzhuan tea in the different process stages. Pile fermentation was the key step in the formation of volatile flavor compounds in Qingzhuan tea. The characteristic aroma components of Qingzhuan raw tea were include (E,E)-2,4-heptadienal, 2-octen-1-al, (E,Z)-2,6-nonadienal, nonanal, benzeneacetaldehyde,β-cyclocitral,β-ionone,α-ionone, 1,2,3-trimethoxybenzene andα-terpineol, et
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