
Keywords: Tyrosinase; Catechin; Theaflavin; Enzymatic synthesis; EA; ethyl acetate; EC; (-)-epicatechin; EGC; (-)-epigallocatechin; ECg; (-)-epicatechin gallate; EGCg; (-)-epigallocatechin gallate; GLB; green tea leaves etracted with the buffer; GPE; green tea powd