山茶
咖啡因
红茶
山茶科
绿茶
品味
茶氨酸
儿茶素
中国茶
食品科学
山茶花
弹簧(装置)
化学
茶黄素
园艺
生物
植物
中国
多酚
地理
物理
生物化学
抗氧化剂
考古
内分泌学
热力学
作者
Chengshun Liu,Jianlong Li,Hanxiang Li,Jinghua Xue,Miao Wang,Guotai Jian,Chen Zhu,Lanting Zeng
标识
DOI:10.1016/j.fochx.2023.100998
摘要
Spring green tea is usually considered to be better than summer green tea. Whether this phenomenon applies to black tea is unknown. Black tea produced using Camellia sinensis var. Yinghong No. 9 leaves is popular in South China and analyzed in the study. The taste and color quality of the infusion was higher for spring tea than for summer tea. Compared with summer tea, the main catechin contents were lower in spring tea, whereas caffeine and total amino acid contents were higher, especially glutamic acid, which may be responsible for the differences between teas. Moreover, spring tea had a higher theabrownin content and a lower L* value. The compounds contributing to the infusion taste and color were correlated with the chromaticity value (i.e., useful indicator of black tea quality). This study revealed the seasonal differences in Yinghong No. 9 black tea quality and the key underlying factors.
科研通智能强力驱动
Strongly Powered by AbleSci AI