The effects of protein concentration on the break-up of protein precipitate by exposure to shear

✍ Scribed by M. Twineham; M. Hoare; D.J. Bell

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 484 KB
• Volume: 39
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(84)80048-2

✦ Synopsis

The efkct of protein concentration on the shear induced break-up of isoelectric soya protein precipitate has been studied during exposure to laminar Couette flow at a shear rate of 2000 SK'. Little break-up was obscrvcd at protein concentrations of O.OOl%wt/v and 5% wt/v. However, break-up occurred between these extremes, to a maximum extent at a protein concentration of 0.25% wt/v. Break-up is shown to arise from particle collisions and is described by a first order rate of change of particle size with time. Relationships are derived for the effect of shear rate and particle concentration on the rate constant for break-up and on the final particle diameter.