Equilibrium isotherm equations to represent moisture sorption on starch
1991
Boki, K. | Ohno, S.
Langmuir, Freudlich, BET, Harkins and Jura, Halsey, Smith, Henderson, and Chung and Pfost equations were used to fit experimental moisture sorption data at 20 degrees C for kudzu, sweet potato, corn, potato, rice, wheat, and snake gourd starches. Goodness of fit (from calculated average residue), standard deviation, and standard error and range of water activity indicated Henderson and Chung and Pfost equations fitted the data well over a wide aw range to 0.85. The large value of constants in Henderson and Chung and Pfost equations indicated stability of the microporous structure to moisture sorption. For larger constants, the microporous structures were more stable.
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