Morris, Gordon, Foster, T. J. and Harding, S. E. (2000) Further observations on the size, shape, and hydration of casein micelles from novel analytical ultracentrifuge and capillary viscometry approaches. Biomacromolecules, 1 (4). pp. 764-767. ISSN 1525-7797
Abstract

The size, shape, and hydration of casein micelles were estimated using a combination of sedimentation velocity (time-derivative analysis) in the analytical ultracentrifuge and capillary viscometry applied to skimmed milk. On the basis of sedimentation time-derivative and Wales-van Holde analyses the casein micelles appear as large spherical molecules of s0T,b = 845S, Mw ~ 2.8 x 108, hydrodynamic radius ∼77.8 nm, and ks/[eta] = 1.6. The molecular hydration (i.e., the extent of chemically bound and physically entrained solvent) was calculated to be 3.4 g/g. These results appear to be in good agreement with comparable results from electron microscopy and dynamic light scattering.

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