Cereal Chem 43:637 - 643.  |  VIEW ARTICLE

Power-Law Rheology of Alkaline Starch Pastes.

E. B. Lancaster, H. F. Conway, and F. Schwab. Copyright 1966 by the American Association of Cereal Chemists, Inc. 

Starch pastes containing from 5 to 10% starch and various amounts of sodium hydroxide (alkali) were prepared by different cooking procedures. The viscosities of the pastes were measured at temperatures up to 71 C. in the amylograph and at various speeds by the Brookfield viscometer. The data followed the power law fairly well, and the parameters of this model were calculated for selected starch pastes with and without alkali. The proportionality constant was related to the yield stress, which was not negligible. The pseudoplasticity constant was nearly independent of conditions and equal to about 0.7.