Release of Minerals from Dried Hijiki, Sargassum fusiforme (Harvey) Setchell, during Water-Soaking

Abstract

During the water-soaking process to remove arsenic from dried Hijiki at 30°C, some other beneficial elements are also lost. During this process, the amounts of calcium, iron, magnesium and zinc released into water were 49 %, 32 %, 77 % and 70 % of those originally present, respectively. Thus, water-soaking for longer than 30 min at room temperature is recommended to eliminate arsenic from Hijiki, but it should be cooked together with other materials, such as soybeans, carrot etc, to supply the lost beneficial elements.