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J Food Sci

Title:		Rapid characterization of the volatile profiles in Pu-erh tea by gas phase electronic nose and microchamber/thermal extractor combined with TD-GC-MS
Author(s):		Yang Y; Rong Y; Liu F; Jiang Y; Deng Y; Dong C; Yuan H;
Address:		"Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China. Yunnan Shuangjiang Mengku Tea Co., Ltd., Lincang, China"
Journal Title:		J Food Sci
Year:		2021
Volume:		20210430
Issue:		6
Page Number:		2358 - 2373
DOI:		10.1111/1750-3841.15723
ISSN/ISBN:		1750-3841 (Electronic) 0022-1147 (Linking)
Abstract:		"Aroma plays an important role in the quality of Pu-erh tea. However, the quality evaluation of Pu-erh tea aroma is heavily relied on the experience of sensory evaluation, and the theoretical research is relatively scarce. In the present work, the volatile compounds in Pu-erh tea were characterized by using gas phase electronic nose (e-nose) and microchamber/thermal extractor (micro-CTE) combined with thermal desorption coupled to gas chromatography-mass spectrometry (TD-GC-MS). A satisfactory discrimination model (R(2) Y = 0.95, Q(2) = 0.807) was obtained by using orthogonal partial least squares discriminant analysis (OPLS-DA) based on the odor fingerprint of different brands of Pu-erh tea. In addition, based on the double criterion of multivariate analysis with VIP >1.0 and univariate analysis with p
Keywords:		Discriminant Analysis *Electronic Nose Gas Chromatography-Mass Spectrometry/*methods Multivariate Analysis Odorants/*analysis Tea/*chemistry Volatile Organic Compounds/*analysis Pu-erh tea electronic nose gas chromatography-mass spectrometry microchamber/;
Notes:		"MedlineYang, Yanqin Rong, Yuting Liu, Fuqiao Jiang, Yongwen Deng, Yuliang Dong, Chunwang Yuan, Haibo eng 31902083/National Natural Science Foundation of China/ 31972465/National Natural Science Foundation of China/ CAAS-ASTIP-TRICAAS/the Science and Technology Innovation Project of the Chinese Academy of Agricultural Sciences/ LQ18C160006/Natural Science Foundation of Zhejiang Province/ 2021/05/01 J Food Sci. 2021 Jun; 86(6):2358-2373. doi: 10.1111/1750-3841.15723. Epub 2021 Apr 30"