| Title: | Characterization of Key Odorants in Lingtou Dancong Oolong Tea and Their Differences Induced by Environmental Conditions from Different Altitudes |
| Author(s): | Wang M; Li J; Liu X; Liu C; Qian J; Yang J; Zhou X; Jia Y; Tang J; Zeng L; |
| Address: | "Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Guangzhou 510650, China. University of Chinese Academy of Sciences, Beijing 100049, China. South China National Botanical Garden, No. 723 Xingke Road, Guangzhou 510650, China. Tea Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of Tea Plant Resources Innovation and Utilization, Guangzhou 510640, China. College of Tea Science, Yunnan Agricultural University, Kunming 650201, China. Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China" |
| ISSN/ISBN: | 2218-1989 (Print) 2218-1989 (Electronic) 2218-1989 (Linking) |
| Abstract: | "Lingtou Dancong oolong tea is a famous Chinese oolong tea due to its special honey-like aroma. However, little is known about its specific aroma profile and key contributors. Furthermore, whether the aroma characteristics of Lingtou Dancong oolong tea are affected by the environmental conditions at different altitudes is unknown. In this study, the aromas in Lingtou Dancong oolong tea were extracted and analyzed by stir-bar sorptive extraction (SBSE) combined with gas chromatography-olfactometry (GC-O) and GC-mass spectrometry (GC-MS), and the aroma profiles of tea plants grown at different altitudes were compared. We detected 59 odor compounds in Lingtou Dancong oolong tea. Eight compounds with honey and floral odors were identified as key components on the basis of GC-O, GC-MS, odor activity value, and flavor dilution analyses. Differences in the contents of precursor geranyl diphosphate and transcript levels of structural genes were found to be responsible for the differential accumulation of linalool and hotrienol among plants grown at different altitudes. This is the first report on the aroma characteristics and key contributors of Lingtou Dancong oolong tea and their differences, as affected by altitude. These results provide details of the chemical basis of the aroma quality of Lingtou Dancong oolong tea" |
| Keywords: | Lingtou Dancong different altitudes gas chromatography-olfactometry/mass spectrometry odorants stir-bar sorptive extraction; |
| Notes: | "PubMed-not-MEDLINEWang, Miao Li, Jianlong Liu, Xiaohui Liu, Chengshun Qian, Jiajia Yang, Jie Zhou, Xiaochen Jia, Yongxia Tang, Jinchi Zeng, Lanting eng ZDBS-LY-SM032/the Basic Frontier Science Research Program of Chinese Academy of Sciences/ 2020QNRC001/Young Elite Scientists Sponsorship Program by China Association for Science and Technology/ 2022KJ120/Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Teams/ KTP20210351/Guangdong Provincial Department of Science and Technology Rural Science and Technology Commissioner Project/ E225052A01/Special Talents and Technical Support Program of Chinese Academy of Sciences/ 200811124531655/Science and Technology Project of Shaoguang/ Switzerland 2022/11/11 Metabolites. 2022 Nov 3; 12(11):1063. doi: 10.3390/metabo12111063" |
