Evaluation of the inorganic food additive (nitrite, nitrate, and sulfur dioxide) content of foods and estimation of daily intake based on the results of official inspection in Japan in fiscal year 1994
1998
Ishiwata, H. (National Inst. of Hygienic Sciences, Tokyo (Japan)) | Nishijima, M. | Fukasawa, Y. | Ito, Y. | Yamada, T.
The concentrations of inorganic food additives (nitrite, nitrate, and sulfur dioxide) in foods sold in Japan were estimated by using the results of official inspections in fiscal year 1994 by 91 local governments, representing most of Japan. In total, 16,236 samples, including 2,438 imported foods, were inspected. The detection rates of nitrite, nitrate, and sulfur dioxide were 79.3%, 82.4%, and 22.9% of the foods tested. The average concentrations of these inorganic food additives in all samples in which their use is allowed were 22.4%, 35.3%, and 54.1%, respectively, of the maximum permitted levels. The estimated daily intakes of these inorganic food additives were 0.318, 0.430, and 1.629 mg/person, respectively, when calculated based on their mean concentrations in foods obtained in the present study and daily food consumption data. Naturally occurring nitrite, nitrate, and sulfur dioxide were considered to contribute little to the daily intakes of these inorganic food additives in the present studies. The food that contributed most to the daily intake of nitrite was meat products (55.0% of nitrite daily intake); that of nitrate was meat products (91.7%); and that of sulfur dioxide was mannan paste (Konnyaku) (28.0%). The estimated daily intake of these inorganic food additives was 10.6%, 0.2%, and 47% of the acceptable daily intake (ADI)
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