A method is described for successive purification of epigallocatechin gallate(EGCG)and epicatechin gallate(ECG)by medium-pressure silica gel column chromatography.

• 采用一种连续中压硅胶柱层析分离高纯度表没食子儿茶素没食子酸酯(EGCG)及表儿茶素没食子酸酯(ECG),原料为含量高于98%25的茶多酚。