PubAg

Main content area

Comparison of emulsifying properties of milk fat globule membrane materials isolated from different dairy by-products

Author:
Phan, T.T.Q., Le, T.T., Van der Meeren, P., Dewettinck, K.
Source:
Journal of dairy science 2014 v.97 no.8 pp. 4799-4810
ISSN:
0022-0302
Subject:
buttermilk, byproducts, casein, emulsifying properties, emulsions, ingredients, lipids, milk, milk fat, minerals, particle size distribution, soybean oil, surface proteins, viscosity, whey, whey protein, Denmark
Abstract:
Emulsifying properties of milk fat globule membrane (MFGM) materials isolated from reconstituted buttermilk (BM; i.e., BM-MFGM) and BM whey (i.e., whey-MFGM), individually or in mixtures with BM powder (BMP) were compared with those of a commercial dairy ingredient (Lacprodan PL-20; Arla Foods Ingredients Group P/S, Viby, Denmark), a material rich in milk polar lipids and proteins. The particle size distribution, viscosity, interfacial protein, and polar lipids load of oil-in-water emulsions prepared using soybean oil were examined. Pronounced droplet aggregation was observed with emulsions stabilized with whey-MFGM or with a mixture of whey-MFGM and BMP. No aggregation was observed for emulsions stabilized with BM-MFGM, Lacprodan PL-20, or a mixture of BM-MFGM and BMP. The surface protein load and polar lipids load were lowest in emulsions with BM-MFGM. The highest protein load and polar lipids load were observed for emulsions made with a mixture of whey-MFGM and BMP. The differences in composition of MFGM materials, such as in whey proteins, caseins, MFGM-specific proteins, polar lipids, minerals, and especially their possible interactions determine their emulsifying properties.
Agid:
5395055