Benchamaporn Pimpa, Sharifah Kharidah Syed Muhammad, Muhammad Ali Hassan, Zulkafli Ghazali, Kamaruddin Hashim, and Duangkhae Kanjanasopa

pp. 759 - 768

Abstract

The effect of electron beam irradiation on sago starch was determined in terms of physicochemical properties. The irradiation dose employed was in the range of 10 to 30 kGy. Peak viscosity was decreased when the irradiation dose was increased. The gel strength was found to be increased when the sago starch was irradiated at 10 to 15 kGy, thereafter, the value was decreased. Solubility was increased while swelling power was decreased. Redness, yellowness and free acidity were increased. Intrinsic viscosity, molecular weight and degree of polymerization were also decreased when the irradiation dose was increased.