Rheological Behavior of High‐Concentration Sodium Caseinate Dispersions

Abstract

The results of this study should be useful for creating new products with high concentrations of sodium caseinate.

Viscosity of protein-stabilized emulsions: Contributions of components and development of a semipredictive model

“…At high concentrations, the viscosity does not diverge as quickly as for the suspensions of droplets. This result is in agreement with previous studies on sodium caseinate, in which suspensions at higher concentrations were studied Farrer and Lips (1999); Pitkowski et al (2008); Loveday et al (2010). In these works, it was shown that the viscosity does not diverge but follows a power law η 0 /η s ∝ (φ ef f,prot ) 12 .…”

“…The viscosity behaviour of the suspensions they form is displayed inFigure 5.At high concentrations, the viscosity does not diverge as quickly as for the suspensions of droplets. This result is in agreement with previous studies on sodium caseinate, in which suspensions at higher concentrations were studied Farrer and Lips (1999); Pitkowski et al(2008);Loveday et al (2010). In these works, it was shown that the viscosity does not diverge but follows a power law η 0 /η s ∝ (φ ef f,prot ) 12 .The behaviour displayed by sodium caseinate resembles that of core-shell microgelsTan et al (2005) and soft spherical brushesVlassopoulos et al (2001), hence a soft colloid framework (as reviewed e.g.…”

“…Using the value in TableI, the relative viscosity of sodium caseinate suspensions is found to follow the power law η 0 /η s ∝ (φ ef f,prot ) 12.2 ± 0.8 . This value is in good agreement with the literature where η 0 /η s ∝ (φ ef f,prot ) 12 in the concentrated regimeFarrer and Lips (1999);Pitkowski et al (2008);Loveday et al (2010).…”

The dissolution behavior of individual powder particles

“…3. The obtained surface concentration of the dissolving particles, 98 kg•m −3 , corresponds well to the overlap concentration of sodium caseinate measured by Loveday et al (2010) and Pitkowski et al (2008). The linear dependence of (Hellborg et al 2012) is incorrect due to the usage of an inaccurate source for diffusion coefficient for sodium caseinate dissolution rate and k mt indicates that the resistance to dissolution solely is the hydrodynamics of the process, in accordance with Eq.…”

Multiphase effects in forming anisotropic calcium caseinate materials

“…The casein micelles in the spray-dried milk powders retained a globular shape (diameter ~100 nm), whereas larger casein micelles (clusters) were present in rollerdried milk powder. Heat-induced aggregation was also reported for casein and sodium caseinate dispersions (HadjSadok et al, 2008;Loveday et al, 2010;Ono et al, 1999;Quo et al, 1989). loss modulus (G″) is defined as the relaxation time (τ).…”