1. Unveiling the aromatic intricacies of Wuyi Rock Tea: A comparative study on sensory attributes and odor-active compounds of Rougui and Shuixian varieties.
- Author
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Wang, Daoliang, Liu, Zhibin, Lan, Xiaoye, Wang, Cainan, Chen, Wensong, Zhan, Sijia, Sun, Yaqian, Su, Weiying, Lin, Chih-Cheng, Liu, Wei, Liu, Yuan, and Ni, Li
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ODORS , *TEA , *TIME-of-flight mass spectrometry , *MASS spectrometry , *GAS chromatography , *WINE flavor & odor , *COMPARATIVE studies - Abstract
• RGT and SXT exhibit distinctive different sensory and volatile profiles. • A total of 12 odor-active compounds (OACs) with OAV > 1 are identified as key OACs. • Eight OACs are commonly shared between RGT and SXT, but with different contents. • The unique key OACs of RGT are (E) -linalool oxide and (Z) -jasmone. • The unique key OACs of SXT are β-cyclocitral and α-ionone. The distinctive fragrance of Wuyi Rock Tea (WRT) has garnered high attention in recent years. Herein, we conducted a comprehensive comparison of the sensory attributes and odor-active compounds (OACs) between two quintessential WRTs, namely Rougui (RGT) and Shuixian (SXT). Sensory analysis revealed that RGT exhibited a more pronounced fruity aroma, while SXT had a more complex and intricate sensory profile. By using gas chromatography-olfactory mass spectrometry (GC-O-MS) and two-dimensional gas chromatography time-of-flight mass spectrometry (GC × GC-TOF-MS) analyses, 26 OACs were identified. Among them, 12 compounds with odor activity values > 1 were recognized as key OACs. Noteworthily, eight compounds, including 6-methyl-5-hepten-2-one, 2-ethyl-3,5-dimethylpyrazine, 2,3-diethyl-5-methylpyrazine, linalool, methyl salicylate, geraniol, (E) -β-ionone, and (E) -nerolidol, were shared by both teas. The unique compounds for RGT were (E) -linalool oxide and (Z) -jasmone, while those for SXT were β-cyclocitral and α-ionone. These findings offer valuable insights for better understanding the flavor differences between the two most important types of WRT. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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