Preparations impregnated with KI or KIO3 were added to the batter in the hydrated form (wheat fibre at 1:6 ratios, soy isolate at 1:3). The hydration rate of carriers was chosen from the results of sensory analysis of the products (Je˛drusek-Golin´ ska & Szymandera-Buszka, 2007) and was related with their water holding capacity.