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Table 1

Purity and yield of L-cysteine degradation products by HSCCC separation and semi-preparative HPLC (adopted from Tian et al. [22]).

Compounds Purity (%) Yield (mg)
C 93.2±2.5 13.1±1.3
EC 94.6±1.7 8.9±0.7
ECG 91.5±2.6 9.2±1.0
C-Cys 93.8±1.1 8.8±0.9
EC-Cys 94.5±1.8 33.1±1.8

C, (+)-Catechin; EC, (–)-epicatechin; ECG, (–)-epicatechin-3-O-gallate; C-Cys, (+)-Catechin-4β-cysteine; EC-Cys, (–)-epicatechin-4β-cysteine; ECG-Cys, (–)-epicatechin-3-O-gallate-4β-cysteine

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