A method for obtaining phospholipids from butter-milk, a by-product of butter making is described. The method consists in coagulating the fat globule membranes with mineral or organic acid, separating the resulted precipitate by centrifugation or filtering, lipid extraction by organic solvents mixture and isolation of phospholipids from the extract by acetone treatment or by column chromatography. Butter-milk, a new source of biological membranes, is characterized by a low cost and accessibility.
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