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Solutes and low water activity

  • N. J. Russell
  • L. Leistner
  • G. W. Gould

Abstract

It has been known from ancient times that the drying of fresh foods prolongs their edible life. Different foods respond more or less well to drying, retaining not only quantitatively different amounts of residual water but undergoing qualitatively different ultrastructural changes; this influences their organoleptic qualities, as does the need or not to rehydrate the food prior to consumption. The amount of water in the food does not give a good correlation with the stability of the food in relation to microbial spoilage when various products are compared. It was not until it was realized that what is important is the state of water in food, or more precisely the “availability” of water in foods, that sensible correlations could be made.

Keywords

Water Activity Compatible Solute Turgor Pressure Food Preservation Food Preservative 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Kluwer Academic/Plenum Publishers, New York 2003

Authors and Affiliations

  • N. J. Russell
  • L. Leistner
  • G. W. Gould

There are no affiliations available

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