Chemical profiling, quantitation, and bioactivities of Du-Zhong tea.
Food Chem
; 394: 133552, 2022 Nov 15.
Article
en En
| MEDLINE
| ID: mdl-35753260
ABSTRACT
Du-Zhong tea is a health beverage produced from Eucommia ulmoides leaves (EUL) as raw materials using traditional tea processing and Chinese herbal pieces processing methods. To evaluate the differences between tender leaves and mature leaves of Du-Zhong tea, UPLC-Q-TOF MS was used to analyze the constituents in EUL collected in April and August. A total of 52 compounds, including iridoids, phenylpropanoids, flavonoids, lignans, and other types of compounds were identified. The contents of nine ingredients in the tender and mature leaves of E. ulmoides were determined by HPLC-DAD analysis. The results show that the average contents of the compounds in tender leaves were significantly higher than those in mature leaves. Lastly, the antioxidant and antipancreatic lipase activities of commercial Du-Zhong tea made by leaves of different maturity were evaluated. Du-Zhong tea with d-grade exhibited relatively higher antioxidant, while C-grade exhibited greater lipase inhibitory activities.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Eucommiaceae
Idioma:
En
Revista:
Food Chem
Año:
2022
Tipo del documento:
Article