Milk ingredient enriched in polar lipids and uses thereof

A method to obtain a dairy ingredient enriched with polar lipids, wherein the weight percentage of phospholipids is higher than 36% based on the percentage of dry matter of the ingredient, and wherein a pasteurized milk cream is subjected to a physical treatment that comprises the following steps:

• centrifugating a pasteurized milk cream that results into a light phase of a concentrated cream, a heavy phase of a skimmed milk;
• obtaining an emulsion inversion of the light phase of a concentrated cream into a water in oil emulsion;
• centrifugally separating the light phase of the concentrated cream to obtain a light phase of milk fat and a heavy phase of concentrated cream serum;
• followed by the steps of:
• extracting proteins from the heavy phase of concentrated cream serum through a thermocalcic treatment comprising an addition of calcium chloride, followed by a heat treatment at about 70° C. during 40 minutes, and a PH adjustment to about 5.2 through acid adjunction selected from the group consisting of an adjunction of citric acid, phosphoric acid, or a mixture thereof;
• extracting the precipitated proteins by centrifugal decantation to obtain a sediment of proteins of concentrated cream serum and a supernatant of deproteinized serum of concentrated cream;
• and
• ultrafiltering and diafiltering with water dilution of the supernatant of deproteinized serum of concentrated cream to obtain a diluted permeate of a deproteinized serum of concentrated cream and a retentate of deproteinized ultrafiltered and diafiltered serum of concentrated cream;
• or followed by the steps of:
• drying by atomizing the heavy phase of concentrated cream serum obtained after the second centrifugation step into a concentrated cream serum powder;
• combining the heavy phase of concentrated cream serum obtained after the second centrifugation step and the concentrated cream serum powder to obtain a concentrated cream serum;
• extracting proteins from the concentrated cream serum through a thermocalcic treatment comprising an addition of calcium chloride, followed by a heat treatment at about 70° C. during 40 minutes, and a PH adjustment to about 5.2 through acid adjunction selected from the group consisting of an adjunction of citric acid, phosphoric acid, or a mixture thereof;
• extracting the precipitated proteins by centrifugal decantation to obtain a sediment of concentrated serum proteins of a concentrated cream and a supernatant of a concentrated and deproteinized serum of concentrated cream;
• and
• ultrafiltering and diafiltering with water dilution of the supernatant of concentrated and deproteinized serum of concentrated cream to obtain a diluted permeate of a deproteinized concentrated serum of concentrated cream and a retentate of deproteinized ultrafiltered and diafiltered concentrated serum of concentrated cream.