5Wang H F, Provan G J, Helliwell K.HPLC determination of eatechins in tealeaves and tea extraets using relative response faetors[J].Food Chemistry: 2003(81):307-312.
6Marshall T,Williams K M.Coomassie blue Protein dye-binding assays measure Formation of an insoluble protein-dye complex [J].Analytical Biochemistry. 1992(204): 107-109.