The dissolution behaviour of native phosphocaseinate as a function of concentration and temperature using a rheological approach
Gaiani, C. | Scher, Jeffrey Noyes | Schuck, P. | Hardy, J. | Desobry, S. | Banon, S.
A simplified method to study native phosphocaseinate dissolution was developed. The method involved dispersing powder in distilled water at a constant shear rate. The use of a Stress Tech Rheometer equipped with a custom-built paddle stirrer permitted the determination of the viscosity during the dissolution. The viscosity profiles obtained highlighted the dissolution stages of the powder including particle wetting, and then swelling followed by a slow disintegration and dissolution of the particles. Using this method, the viscosities of native phosphocaseinate suspensions were followed as a function of protein concentration, temperature and dissolution time. Indeed, the best knowledge of the dissolution properties could be one way to extend the application of this high protein content powder: the principal limitation of this powder being its poor dissolution ability.
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