Hongyacha, a Naturally Caffeine-Free Tea Plant from Fujian, China
| Autor: | Yu-Fei Liu, Liang Chen, Ji-Qiang Jin, Jing Zhang, Ming-Zhe Yao, Yun-Feng Chai |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Purine China Biology complex mixtures Camellia sinensis Catechin 03 medical and health sciences chemistry.chemical_compound 0404 agricultural biotechnology Caffeine medicine Theobromine Tea Traditional medicine Camellia ptilophylla food and beverages 04 agricultural and veterinary sciences General Chemistry 040401 food science 030104 developmental biology chemistry General Agricultural and Biological Sciences medicine.drug |
| Zdroj: | Journal of Agricultural and Food Chemistry. 66:11311-11319 |
| ISSN: | 1520-5118 0021-8561 |
| DOI: | 10.1021/acs.jafc.8b03433 |
| Popis: | Hongyacha (HYC) is a type of new wild tea plant discovered in Fujian Province, China. This tea is helpful to the healing or prevention of disease in its original growing area. However, research on this tea is limited. Our results showed that HYC displayed obvious differences in its morphological characteristics compared with Cocoa tea ( Camellia ptilophylla Chang), a famous caffeine-free tea plant in China. Theobromine and trans-catechins, but not caffeine and cis-catechins, were the dominant purine alkaloids and catechins detected in HYC. HYC might contain abundant gallocatechin-(4 → 8)-gallocatechin gallate, 1,3,4,6-tetra- O-galloyl-β-d-glucopyranose, and (-)-gallocatechin-3,5-di- O-gallate, which were not detected in regular tea. We also found that the TCS1 of HYC was distinct, and the responding recombinant protein exhibited only theobromine synthase activity. The obtained results showed that HYC is a new kind of caffeine-free tea plant and may be used for scientific protection and efficient utilization in the future. |
| Databáze: | OpenAIRE |
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