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H-1 NMR diffusometry study of water in casein dispersions and gels

In English

Författare

Summary, in English

The self-diffusion coefficients of water in casein solutions and gels were measured using a pulsed-gradient spin-echo nuclear magnetic resonance technique (PGSE NMR). The dependence of the self-diffusion coefficient of water on the concentration and structure-of casein is reported. The results were analyzed using a cell model. It was found that the water self-diffusion coefficient is insensitive to the structure of the casein in solution or in a gelled state. The influence of casein concentration on the water self-diffusion coefficient could be explained by obstruction from the casein molecule. Assuming a simple model with two water regions, each characterized by a specific water concentration and value of the water diffusion coefficient, the water mobility reduction induced by the casein can be rationalized.

Publiceringsår

2002

Språk

Engelska

Sidor

4295-4302

Publikation/Tidskrift/Serie

Journal of Agricultural and Food Chemistry

Volym

50

Issue

15

Dokumenttyp

Artikel i tidskrift

Förlag

The American Chemical Society (ACS)

Ämne

  • Agricultural Science, Forestry and Fisheries

Nyckelord

  • cell model for diffusion
  • obstruction
  • NMR
  • gel
  • casein
  • self-diffusion

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0021-8561