| Title: | Insights into Characteristic Volatiles in Wuyi Rock Teas with Different Cultivars by Chemometrics and Gas Chromatography Olfactometry/Mass Spectrometry |
| Author(s): | Zhang Y; Kang S; Yan H; Xie D; Chen Q; Lv H; Lin Z; Zhu Y; |
| Address: | "Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China. Key Laboratory of Tea Processing Engineering of Zhejiang Province, Hangzhou 310008, China" |
| ISSN/ISBN: | 2304-8158 (Print) 2304-8158 (Electronic) 2304-8158 (Linking) |
| Abstract: | "Wuyi rock tea (WRT) is one of the most famous subcategories of oolong tea, exhibiting distinct aroma characteristics with the application of different cultivars. However, a comprehensive comparison of the characteristic volatiles among WRTs with different cultivars has rarely been carried out. In this study, non-targeted analyses of volatile fragrant compounds (VFCs) and targeted aroma-active compounds in WRTs from four different cultivars were performed using chemometrics and gas chromatography olfactometry/mass spectrometry (GC-O/MS). A total of 166, 169, 166, and 169 VFCs were identified for Dahongpao (DHP), Rougui (RG), Shuixian (SX), and Jinfo (JF), respectively; and 40 components were considered as the key differential VFCs among WRTs by multivariate statistical analysis. Furthermore, 56 aroma-active compounds were recognized with predominant performances in 'floral & fruity', 'green & fresh', 'roasted and caramel', 'sweet', and 'herbal' attributes. The comprehensive analysis of the chemometrics and GC-O/MS results indicated that methyl salicylate, p-cymene, 2,5-dimethylpyrazine, and 1-furfurylpyrrole in DHP; phenylethyl alcohol, phenethyl acetate, indole, and (E)-beta-famesene in RG; linalool, phenethyl butyrate, hexyl hexanoate, and dihydroactinidiolide in JF; and naphthalene in SX were the characteristic volatiles for each type of WRT. The obtained results provide a fundamental basis for distinguishing tea cultivars, recombination, and simulation of the WRT aroma" |
| Keywords: | Gc-o/ms Wuyi rock teas aroma-active compounds characteristic volatiles cultivars multivariate statistical analysis; |
| Notes: | "PubMed-not-MEDLINEZhang, Yue Kang, Suyoung Yan, Han Xie, Dongchao Chen, Qincao Lv, Haipeng Lin, Zhi Zhu, Yin eng U21A20231/National Natural Science Foundation of China/ 32172631/National Natural Science Foundation of China/ LGN20C160007/he Zhejiang Province Public Welfare Technology Application Research Project/ CARS-19/he Special Funds for China Agriculture Research System of MOF and MARA/ CAAS-ASTIP-2014-TRICAAS/the Science and Technology Innovation Project of the Chinese Academy of Agricultural Sciences/ Switzerland 2022/12/24 Foods. 2022 Dec 19; 11(24):4109. doi: 10.3390/foods11244109" |
