| Title: | Discovery and Flavor Characterization of High-Grade Markers in Baked Green Tea |
| Author(s): | Zou Y; Tang C; Yang X; Guo T; Song H; |
| Address: | "School of Food and Health, Beijing Technology and Business University, Beijing 100048, China. Department of Pharmacy, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China" |
| DOI: | 10.3390/molecules28062462 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "Green tea is a popular beverage around the world and possesses a unique flavor. The flavor qualities of green tea are closely related to its grade and this relationship has not yet been studied. Three baked green teas with similar flavor were studied, namely, Huangshan Maofeng, Taiping Houkui, and Shucheng Xiaolanhua. A total of 34 odor compounds were identified by solid phase microextraction (SPME) combined with two-dimensional comprehensive gas chromatography-olfactometry-mass spectrometry analysis (GCxGC-O-MS). The results of the clustering analysis showed that the content of D-limonene and linalool in the high-grade (Grade A) tea was much higher than the content in other grades, so they were identified as odor markers of Grade A baked green tea. The taste components of different grades of green tea infusion were analyzed by high-performance liquid chromatography-mass spectrometry (HPLC-MS) and HPLC. A combination of clustering analysis, principal component analysis (PCA), and orthogonal partial least squares discrimination analysis (OPLS-DA) indicated that galloylglucose, digalloylglucose, trigalloyglucose, strictinin, and gallic acid could be used as taste markers of Grade A baked green tea. Therefore, the results in this paper reveal the substances responsible for the odor and taste markers of high-grade baked green tea" |
| Keywords: | *Tea/chemistry *Volatile Organic Compounds/analysis Beverages/analysis Gas Chromatography-Mass Spectrometry/methods Mass Spectrometry Odorants/analysis GCxGC-O-MS Hplc-ms baked green tea metabolomics odor taste; |
| Notes: | "MedlineZou, Yushi Tang, Chen Yang, Xinyu Guo, Tianyang Song, Huanlu eng 32102120/National Natural Science Foundation of China/ 82004011/National Natural Science Foundation of China/ SPKX-202201/Discipline Construction - Food Science and Engineering/ Switzerland 2023/03/30 Molecules. 2023 Mar 8; 28(6):2462. doi: 10.3390/molecules28062462" |
