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Analysis of a milk membrane fraction isolated from whey protein concentrates

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Houlihan, A. V. and Goddard, P. A. (1991) Analysis of a milk membrane fraction isolated from whey protein concentrates. Australian Journal of Dairy Technology, 46 (2). pp. 77-81.

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Abstract

Examination of a milk membrane fraction from whey protein concentrates (WPC) has shown that components originating from the skim milk membrane (SMM) system were present in lipoprotein complexes with beta-lactoglobulin and alpha-lactalbumin. This membrane fraction contained <3% of the total WPC protein, approx. 40% of the WPC phospholipid and <7% of the WPC triglyceride components. Isopycnic sucrose density-gradient centrifugation showed that the lipoprotein complexes isolated in the membrane fraction covered a broad density range but, in general, were higher in density than SMM lipoproteins and lower in density than the high-density fraction of milk fat globule membrane (MFGM) material. These complexes had apparently formed during processing in a manner similar to complexes between MFGM material and skim milk components observed in pasteurized milks and creams.

Item Type:Article
Keywords:Cows; Whey protein; concentrates; membranes; separation; lipoproteins; characteristics Nutrition (Human and Experimental); Dairy Science
Subjects:Animal culture > Cattle > Dairy processing. Dairy products
Live Archive:30 Jan 2018 01:31
Last Modified:03 Sep 2021 16:51

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