ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Published moisture sorption data of selected gums, fibers and starch determined at water activities of up to 0.98-0.99 were fitted by an empirical three parameter model. It had the general mathematical structure of the GAB model but its abscissa's range was expanded from zero to one, to zero to infinity. This was done by substituting In [1/(1 -aw)] or aw/(1-aw) for aw, terms that could be derived from Henderson's and Oswin's models. This hybrid model with either substitution had a particularly good fit to the isotherms part that accounted for moisture sorption at high water activities. The model with the logarithmic transformation, however, appeared to be more practical and to better account for the intermediate part of the moisture sorption isotherm.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1990.tb05223.x
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