Absolute Quantitative Volatile Measurement from Fresh Tea Leaves and the Derived Teas Revealed Contributions of Postharvest Synthesis of Endogenous Volatiles for the Aroma Quality of Made Teas
文献类型： 外文期刊
作者： Chen, Mingjie 1 ; Guo, Li 2 ; Zhou, Huiwen 1 ; Guo, Yaling 3 ; Zhang, Yi 1 ; Lin, Zhi 2 ; Sun, Meng 1 ; Zeng, Wei 1 ; Wu, Hu 1 ;
作者机构： 1.Xinyang Normal Univ, Coll Life Sci, Henan Key Lab Tea Plant Biol, Xinyang 464000, Peoples R China
2.Chinese Acad Agr Sci, Tea Res Inst, Hangzhou 310008, Peoples R China
3.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China
4.Guangdong Acad Agr Sci, Tea Res Inst, Guangdong Key Lab Tea Plant Resources Innovat & U, Guangzhou 510640, Peoples R China
关键词： solvent-assisted-flavor evaporation; GC-FID; FID response factor; endogenous volatile; fresh leaves; green tea; oolong tea; black tea
期刊名称：APPLIED SCIENCES-BASEL （ 影响因子：2.679； 五年影响因子：2.736 ）
ISSN：
年卷期： 2021 年 11 卷 2 期
页码：
收录情况： SCI
摘要： Characteristic aroma is a well-appreciated feature contributing to tea quality. Although extensive studies have been made to investigate aroma biosynthesis and gene expressions during tea making processes, it remains unclear whether the endogenous volatile biosynthesis during postharvest tea processing contributes to the aroma quality of made tea. To critically evaluate this question, we used the same batch of fresh tea leaves and produced three different types of tea with different degrees of fermentation (green tea, oolong tea, and black tea). Total volatiles were extracted by solvent-assisted-flavor evaporation, then quantified by gas chromatography-flame ionization detector combined with response factor correction for quantitative measurement. Compared with fresh tea leaves, the volatile profiles of the made teas were dramatically altered, with significant loss for the majority of endogenous volatiles and simultaneous gain for non-endogenous volatiles. By calculation of odor-activity values, the potential volatiles contributing to the aroma characteristics of each tea type were identified. Our data suggest that postharvest synthesis of endogenous volatiles did not contribute to the aroma quality of made tea.
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