@article{oai:kanazawa-u.repo.nii.ac.jp:00006149,
 author = {寺沢, なお子 and 北, 優貴},
 journal = {金沢大学人間科学系紀要},
 month = {Mar},
 note = {市販の緑葉野菜の硝酸含有量および緑葉野菜の茹で，水さらし，および茹で水への食塩添加による硝酸含有量の変化について調べた。また近年，種々の緑葉野菜を用いたジュースや，ホウレンソウ等の緑葉野菜を使った離乳食が数多く出回っていることから，これらの硝酸含有量についても調べた。 その結果，ホウレンソウとミズナの硝酸イオン量（葉柄含む）は，食品成分表の値のそれぞれ2倍，3倍近い含有量であった。またホウレンソウよりもサラダホウレンソウの方が硝酸イオン含有量が高かった。茹で時間はいずれも長い方が硝酸イオン量が減少したが，水さらし時間の影響は小さかった。茹で水への食塩添加の影響はほとんどなかった。 野菜ジュースでは，緑葉野菜を多く使用した商品や濃縮汁使用商品の硝酸イオン量が高い傾向にあり，最も硝酸イオン量が高かった試料では約50mg/100mlの硝酸イオンが含まれていた。離乳食では，今回測定した18試料のうち11種類で硝酸イオンが検出され，うち9種類でEUにおけるベビーフード中硝酸イオン基準値（0.2mg/g）を超えていた。最も硝酸イオン量が高かった試料ではEUの基準値の5倍の含有量であった。 The nitrate content of fresh green-leaf vegetables, and the effect of boiling, soaking in water, and adding salt in boiled water on the nitrate content of the vegetables were investigated. The nitrate content of vegetable juices and baby foods was also measured, as many juices and baby foods are now made from green-leaf vegetables. The nitrate contents of spinach and potted herb mustard (containing petiole) were 2-3 times greater than the data for them in the standard tables of food composition for Japan. The nitrate content of salad spinach was greater than that of spinach. Although the nitrate content of the vegetables was decreased with increasing boiling time, the time of soaking the boiled vegetables in water had little effect on the nitrate content. The addition of salt in boiled water had almost no effect on the nitrate content of the vegetables. The nitrate content of juice made from many green-leaf vegetables or of concentrated juice tended to be relatively high, the highest content of nitrate in the juice samples being about 50 mg/100ml. In the case of baby foods, nitrate was detected in 11 of the 18 samples investigated. The nitrate content of 9 of these samples was in excess of the standard content of nitrate in EU (0.2mg/g), the highest content in the baby food samples being about 5 times greater than the standard EU content of nitrate.},
 pages = {1--14},
 title = {緑葉野菜および緑葉野菜を利用した加工食品の硝酸含有量},
 volume = {1},
 year = {2009}
}