Properties: high solubility, low viscosity, clean flavour, excellent emulsification properties, freeze thaw stability, high fat and water binding ability
> 85% protein content
Through addition of acid / microbial culture to precipitae casein from whey
Produced from skim milk at pH 4.6
WHEY PROTEIN
ISOLATES
(WPI)
Properties: bland flavour
high: gel strength, viscosity, aeration,
water binding ability, solubility
Low lactose ( < 1%) ; low fat ( <0.5%)
High cost
> 90% protein content (pure protein)
WHEY PROTEIN
CONCENTRATE (WPC)
Applications: egg substitutes, cakes, nutritional bars, high protein beverages, ice cream, frozen yoghurt
Functions: thickening agent, emulsifier, gelling agent
to increase viscosity
to improve texture
function over a wide pH range
~ 75% protein
WHEY
PROTEIN
Denatured state
Lose its solubility at pH 4 to 6.5
Native state
Perform emulsification & whipping properties
Highly soluble
Serum / watery portion of milk that remains after cheese production