Characterisation of anthocyanidin reductase from Shuchazao green tea.

Background: Flavan-3-ols, which account for approximately 700-800 g kg(-1) of tea polyphenols, exert many health-promoting effects. Anthocyanidin reductase (ANR) is an important enzyme involved in the biosynthesis of flavan-3-ols in the tea plant. The purpose of this study was to establish a suitable method for the determination of ANR activity.

Differential gene expression in tea (Camellia sinensis L.) calli with different morphologies and catechin contents.

Tea (Camellia sinensis) is a commercially important crop that contains valuable secondary metabolites. To understand the molecular regulation of secondary metabolism in tea, we selected and analyzed two cell lines of tea callus (Yunjing63Y and Yunjing63X) that showed different morphological characteristics and catechin contents. Yunjing63Y callus was yellow and tight, while yunjing63X callus was white and loose.

N-(3,4-Diethoxy-phen-yl)acetamide.

In the title compound, C(12)H(17)NO(3), the conformations of the N-H and C=O bonds are anti to each other. In the crystal structure, N-H⋯O hydrogen-bond inter-actions help to establish the packing.