FOOD. Science. Technology. Quality

Food. SCIENCE. Technology. Quality

Food. Science. TECHNOLOGY. Quality

Food. Science. Technology. QUALITY




Gelation of whey products


The objective of this project was to investigate the gelling ability of several whey products: powdered whey and whey protein concentrates with different protein content. Dispersions of different protein concentration (4, 6, 8 and 10%) were made, heated from a temperature of 25°C to 85°C, and cooled to 25°C. Rheological properties were investigated using a ‘Haake RS300’ dynamic rheometer in an oscillatory mode. Rheological modules, phase angle, and loss tangent were registered. Frequency sweeps were performed at 85°C and 25°C. For all investigated products, the storage modules increased when their samples were cooled. The frequency sweep at 25°C revealed that gels were formed. The best gelling performance was stated for the whey protein concentrate containing respectively: 65.3% of proteins and 5.9% of mineral salts. Among all investigated products, this particular composition seems to be the most optimal one to enable forming gel.


protein, whey, WPC gel, rheology