Cereal Chem 68:405-409   |  VIEW ARTICLE

Moisture Adsorption of Damaged Wheat Starch.

C. Mok and J. W. Dick. Copyright 1991 by the American Association of Cereal Chemists, Inc. 

The moisture adsorption characteristics of wheat starch damaged by ball milling were studied at 30 C, and the adsorption isotherms were analyzed according to the available models. Damaged starch showed lower and higher sorptive capacities than undamaged starch in the region of low and high water activity, respectively. The Chung-Pfost equation was the best-fitting equation for the adsorption data of undamaged starch. As the degree of starch damage increased, the adsorption isotherm deviated more from the Chung- Pfost equation. The Oswin equation was the best-fitting equation for the adsorption isotherm of damaged starch.