[Amount of nitrate and nitrite in daily menus containing more than 350 g of vegetables].
The contents of nitrate and nitrite in menus containing more than 350 g of vegetables per day were investigated. The amounts of vegetables in menu A developed by female students and menu B taken from a recipe book were 350+/-2 g and 457+/-77 g, respectively. The average content of the nitrate was 321.0+/-139.3 mg (104.2-636.9 mg) in menu A, and 245.7+/-90.7 mg (140.1-507.3 mg) in menu B. Sixteen and thirteen samples exceeded the ADI in menus A and B, respectively. This may be because menu A contained more raw vegetables than menu B (menu A; 120+/-58 g, menu B; 72+/-71 g). The contents of nitrite in menu A and B were 1.2+/-0.3 mg (0.7-1.8 mg) and 2.8+/-0.9 mg (1.3-4.6 mg), respectively, and 6 samples in menu B exceeded the ADI. Intake of 350 g of vegetables or more in a day may require careful consideration of selection, frequency of use and cooking method, especially for vegetables with high nitrate content. A questionnaire to female students showed that 80% or more of students recognized that vegetables containing high contents of nitrate, such as spinach and komatsuna, should be boiled before eating them.
Murata
Mihoko
M
Hiroshima Bunka Gakuen Two-Year College, 3-5-1 Nagatsukanishi, Asaminami-ku, Hiroshima-shi, Hiroshima 731-0136, Japan.
Sugiyama
Sumi
S
Ueda
Aiko
A
Ishinaga
Masataka
M
D000328:Adult; D005260:Female; D006801:Humans; D009566:Nitrates / Q000032:analysis*; D009573:Nitrites / Q000032:analysis*; D018673:Nutrition Policy; D013246:Sterilization, Tubal; D011795:Surveys and Questionnaires; D014675:Vegetables / Q000737:chemistry*; D055815:Young Adult
D009566:Nitrates; D009573:Nitrites