Alterations in Maize Starch under the Action of Irradiation and Temperature

摘要

During the irradiation and drying of grain at 140C, processes apparently take place therein which are related with a change in the structure of the starch by its degradation; in particular, with a certain degradation of amylose. In this study, corn containing 13% moisture was irradiated with gamma rays from Co60 at doses of 100,000 and 1,500,000.00 R. The starch was then extracted from non-irradiated corn as well. The viscosity ratio was calculated, as well as molecular weight and degree of polymerization. (Author)