Characterization of key aroma compounds and enantiomer distribution in Longjing tea.
Food Chem
; 361: 130096, 2021 Nov 01.
Article
em En
| MEDLINE
| ID: mdl-34023691
ABSTRACT
By comparing the enantiomers of authentic Longjing tea, the authenticity of Longjing tea can be effectively distinguished. In this study, 18 enantiomers were identified using a chiral column. At the same time, the unique enantiomer ratio (ER) of Longjing tea (LG1, LG2, LG3, LG4, LG5) of different grades and origins was determined. The ER can provide a theoretical basis for distinguishing Longjing tea of different grades and origins, and for identifying the authenticity of Longjing tea. The ER ratio of (R)-(-)-1-octen-3-ol and (S)-(+)-1-octen-3-ol can be used to identify LG1 (7129). The ER ratio of (S)-(+)-α-ionone and (R)-(-)-α-ionone can be used to identify LG2 (6535). The ER ratio of (R)-(-)-dihydroactinidiolide to (S)-(+)-dihydroactinidiolide (7129) can also be used to detect LG3. The ER ratio of (R)-(+)-Limonene and (S)-(-)-limonene can be used to identify LG4 (2080). The ER ratio of (R)-(-)-linalool to (S)-(+)-linalool (1283) was available to identify LG5.
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MEDLINE
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Chá
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Análise de Alimentos
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Odorantes
Idioma:
En
Ano de publicação:
2021
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Article