Abstract
ABSTRACTA three parameter equation for moisture isotherms was developed and fitted to 31 food sorption isotherms. The GAB and the Peleg's models were fitted to the isotherms for comparison. Residuals and root mean square were used for assessment of the goodness of fit. The proposed equation gives fit to 28 isotherms but not as good as that obtained with the Peleg's model but much better than that found with the GAB model. Nevertheless the new equation gives higher probability of good fit to experimental data than the other two equations tested. Moreover, the new equation gives water content approaching infinity when aw= 1, a property which is not offered neither by the Peleg's nor the GAB model.
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