| Title: | Insights into the Key Odorants in Large-Leaf Yellow Tea (Camellia sinensis) by Application of the Sensomics Approach |
| Author(s): | Zhai X; Hu Y; Pei Z; Yu J; Li M; Zhang L; Ho CT; Zhang Y; Wan X; |
| Address: | "State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, China. International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei, 230036, China. Department of Food Science, Rutgers University, New Brunswick, New Jersey 08901, United States. Department of Flavor Chemistry, University of Hohenheim, Fruwirthstrasse 12, Verfugungsgebaude, 70599, Stuttgart, Germany" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "Large-leaf yellow tea (LYT) is a yellow tea product with a specific aroma characteristic and is enjoyed with increasing enthusiasm in China. However, its key odorants are still unknown. In this study, 46 odorants in the headspace and vacuum-distillate of the tea infusion were identified via aroma extract dilution analysis. Sixteen compounds were newly found in LYT infusion. They were present in the highest flavor dilution factors together with 2-ethyl-3,5-dimethylpyrazine. All odorants were quantitated to evaluate their own odor activity values (OAVs). High OAVs were found for 2-methylbutanal (malty, 210), (E,E)-2,4-heptandienal (fatty/flowery, 170), 2-methylpropanal (malty, 120) and 2,3-diethyl-5-methylpyrazine (earthy/roasty, 110). An aroma recombinate consisting of 17 odorants (all OAVs >/= 1) in an odorless nonvolatile LYT matrix mimicked the overall aroma of the original infusion, verifying the successful characterization of key aroma components in a LYT beverage. The knowledge of key odorants obtained showed potential for simplifying industrial flavor optimization of the LYT product" |
| Keywords: | Odorants/analysis *Camellia sinensis Indicator Dilution Techniques Plant Leaves/chemistry Tea *Volatile Organic Compounds/analysis Flavoring Agents/analysis Olfactometry aroma recombinate flavor dilution large-leaf yellow tea odor activity values omission; |
| Notes: | "MedlineZhai, Xiaoting Hu, Yuemeng Pei, Ziying Yu, Jieyao Li, Mengru Zhang, Liang Ho, Chi-Tang Zhang, Yanyan Wan, Xiaochun eng 2022/12/28 J Agric Food Chem. 2023 Jan 11; 71(1):690-699. doi: 10.1021/acs.jafc.2c05881. Epub 2022 Dec 27" |
