The method is isocratic, uses an uncomplicated mobile phase, requires minimal sample preparation,and has rapid assay procedures and reduced solvent consumption. This method is thus ideally suited for routine analyses with short run times of EGC ,CAF ,EC ,B2 and EGCG in crude plant samples and formulations containing Camellia sinensis L. and/or grape seed
extracts. Furthermore, the developed method can serve as an important reference for the quality control of teas and could help consumers to select tea brands with the highest content of
beneficial compounds.