TY - JOUR
T1 - Insights into the Key Odorants in Large-Leaf Yellow Tea (Camellia sinensis) by Application of the Sensomics Approach
AU - Zhai, Xiaoting
AU - Hu, Yuemeng
AU - Pei, Ziying
AU - Yu, Jieyao
AU - Li, Mengru
AU - Zhang, Liang
AU - Ho, Chi Tang
AU - Zhang, Yanyan
AU - Wan, Xiaochun
N1 - Funding Information:
This work was kindly supported by the National Natural Science Foundation of China (32072634 and U21A20231), the Anhui Key Research and Development Plan (2022h11020022), and the Natural Science Foundation of Anhui Province (2208085MC70).
Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
KW - aroma recombinate
KW - flavor dilution
KW - large-leaf yellow tea
KW - odor activity values
KW - omission tests
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U2 - 10.1021/acs.jafc.2c05881
DO - 10.1021/acs.jafc.2c05881
M3 - Article
C2 - 36573803
AN - SCOPUS:85145269427
SN - 0021-8561
JO - Journal of Agricultural and Food Chemistry
JF - Journal of Agricultural and Food Chemistry
ER -