Protein concentrate powders are produced by removing soluble carbohydrates and some of the flavour compounds from defatted plant meal, then spray dried to produce high protein powders. Protein content ranges from 30% to 85% depending on the plant
source and the amount of processing.
Protein isolate powders are produced by solubilising the protein, then centrifuged to separate protein from other components such as water insoluble polysaccharides. The protein solution is then spray dried. Protein content is 90% or more.