Abstract:
PURPOSE: A preparation method of gardenia fruit chrysophyll extract having inhibition activity of growth of microorganism such as Staphylococcus aureus, E. coli, and containing 3,4-dihydroxybenzoic acid is provided. CONSTITUTION: A preparation method of gardenia fruit chrysophyll extract is characterized by comprising the following steps: (i)grinding the dried gardenia fruit; (ii)washing by dipping in hexane solvent at room temperature for 24 hours so as to remove impurity and fat soluble component; (iii)after dipping residue in water, ethanol, methanol solvent, filtrating to obtain extract; (iv)swelling extract with water or ethanol or methanol solvent by using Sephadex LH-20 and eluting and fractionizing; (v)purifying and manufacturing gardenia fruit chrysophyll extract by collecting eluate fraction whose Ve/Vt(ratio of elution volume to total column volume) is 0.8-1.2; (vi)performing vacuum concentration or freeze drying.