Abstract: Described are protein and/or carbohydrate based fat-replicating systems and methods of making same in which fat globule mimicking particles of protein or carbohydrate origin are modified by encapsulating same in a membrane which more closely replicates the characteristics of natural fat globules. The membrane is of liposome architecture formed by lipids, in particular, liposomal phospholipids. Liposome encapsulated food additives and the method of making and using same in both fatty products of natural and synthetic origin are described. Also described is a method for making a fat substitute from whey curd, suitably of diary whey origin. The whey may include a protein additive such as a caseinate. Also described are the fat substitute products produced in accordance with such methods. Such products are dispersions formed from whey curd or a curd comprised of whey and protein additive. A fat substitute derived from a comminuted curd comprised of whey protein-caseinate coprecipitate is described.

Abstract: A liquid or frozen yogurt is prepared by combining sources of fat and milk derived solids with a relatively undenatured whey protein concentrate to form a mixture having no more than 2 parts casein to 1 part whey protein. The source of whey protein concentrate has all casein coagulating enzyme inactivated and the concentrate contains about 22 to 52% protein, 0.1 to 6% fat, 32 to 73% lactose and 3 to 11% ash. The mixture is maintained at a temperature sufficient to pasteurize and form a protein complex and the pasteurized mixture is fermented to produce the liquid yogurt which can be frozen.