日本人の消費するコムギ, およびダイズ製品のセレン含量

概要

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The selenium contents of wheat and soybean products consumed in Japan were determined byfluorometric analysis. Whole wheat and soybean samples, grown at various sites in Japan, showed low selenium values. The mean values were 0.02 (wheat, <I>n</I>=5) and 0.03 (soybean, <I>n</I>=18) μg Se/g, respectively. High selenium values (0.30 to 1.15μg Se/g) were found in imported American or Canadian hard or durum wheats. Australian wheat showed moderate selenium levels (0.07μg Se/g), and American soft wheat showed the lowest level (0.02μg Se/g). Selenium in commercial wheat products was also determined. The hard type of wheat nour, bread and Japanese spaghetti, produced from the American or Canadian hard or durum wheats, showed high selenium values (0.19 to 0.79μg Se/g). Similarly to wheat, the selenium contents of imported American soybeans were higher than those of other soybean samples. However, most commercial soybean products sold in local retail shops in Japan contained comparatively Iow seleRium levels (0.01 to 0.05μgSe/g). Based on the present results and the National Nutrition Suryey, selenium intake from wheat products by Japanese was estimated to be around 20μg/day/capita. These results indicate that wheat products produced from imported American or Canadian hard or durum wheat are a major source of selenium in the Japanese diet.
社団法人日本栄養・食糧学会の論文