PREPARATION METHOD FOR CATECHIN CONCENTRATE WITH REDUCED CAFFEINE CONTENT

摘要

PURPOSE: A method for preparing caffeine-removed catechin concentrate from a green tea extract is provided to prevent excessive intake of caffeine, and to manufacture catechin-enhanced food or health functional food. CONSTITUTION: A method for preparing caffeine-removed catechin concentrate comprises: a step of extracting green tea with hot water or a solvent containing 1-30 wt% of ethanol, and preparing a green tea extract; a step of loading the green tea extract on a column filled with a synthetic adsorption resin, and obtaining catechin and catechin complex eluate; a step of passing the catechin and catechin complex eluate through a column filled with a cation exchange resin; and a step of concentrating. The cation exchange resin is a hydrogen type or sodium cation exchange resin. The cation exchange resin is SCR-B.