Mineral Contents of School Lunches.

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  • 学校給食における無機質の含有量
  • ガッコウ キュウショク ニ オケル ムキシツ ノ ガンユウリョウ

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In order to learn the actual status of mineral intake from school lunches, we determined the mineral contents in 72 samples collected from elementary schools in Aichi Prefecture. The intake was compared and studied with the recommended values.<BR>1) Average mineral contents in a school lunch were; sodium, 1, 326mg; potassium, 780 mg; iron, 2.61mg; calcium, 340mg; phosphorus, 404mg; magnesium, 79mg; copper, 0.29mg; manganese, 0.93mg; zinc, 2.86mg.<BR>2) While calcium, sodium and phosphorus intakes satisfied the recommended intakes, the intakes of other minerals were insufficient. Copper intake was only 50% of the recommended value.<BR>3) Mineral intakes from school lunch differed depending on the kind of staple food served; potassium and phosphorus intake were higher in lunches served with bread, and manganese and zinc in lunches served with rice.<BR>4) Difference due to different cooking methods was observed only in sodium intake which was higher in lunches prepared in the school kitchen.

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