Patent No. US 6,762,312 B1: Kao Corp., Tokyo, Japan, patented a phytosterol purifying process that involves esterifying a crude fatty acid extract derived from a vegetable fat and/or oil; contacting the extract with a solvent comprising water and an organic solvent to crystallize the phytosterols and separating the crystallized phytosterols from the solvent.
Phytosterol Purification Process Patent Earned by Kao
Published November 22, 2005
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