Patent ID: 6015915
Filing Date: 2000-01-18
Classification: C11B

Abstract:
A process for degumming a fatty substance, comprising the steps of:mixing said fatty substance with a reactive aqueous solution of a complexing agent consisting of ethylenediaminetetracetic acid or a salt thereof and optionally one member selected from the group consisting of citric acid, phosphoric acid, oxalic acid, tartaric acid, acids of the aminocarboxylic type, acids of the polyhydroxycarboxylic type, polycarboxylic acids, the salts of these acids and mixtures of two or more of these substances and an anionic, cationic, zwitterionic or nonionic type emulsifier or an emulsifier that is generated in situ by partial neutralization of free fatty acids present in the fatty substance, to extract phospholipids present in said fatty substance, said mixing being carried out by adding, all at once, the aqueous solution of complexing agent and emulsifier to the fatty substance or vice versa; andstirring the mixture at a rate between 500 and 15000 revolutions/minute to form a fine emulsion, wherein after degumming, said fatty substance has a total content of phospholipids, expressed in the form of phosphorus, of less than 10 ppm.