[Nitrate and nitrite contents in vegetable juice, tea beverage and mineral water on the market].
The contents of nitrate and nitrite in vegetable juice (n = 63), tea beverage (n = 12) and mineral water (n = 15) were measured. The mean contents of nitrate were 0.73 +/- 14.57 mg/100 g, 0.61 +/- 1.12 mg/100 g and 0.25 +/- 0.33 mg/100 g as NO3-, respectively. The contents of the nitrite were 0.03 +/- 0.05 mg/100 g, 0.02 +/- 0.01 mg/100 g and 0.001 +/- 0.001 mg/100 g as NO2-, respectively. The content of nitrate is high in some vegetable juices, and warnings may be necessary for people who drink them frequently.
Murata
Mihoko
M
Hiroshima Bunka Two-Year College, 3-5-1, Nagatsukanishi, Asaminami-ku, Hiroshima-shi, Hiroshima 731-0136, Japan.
Ishinaga
Masataka
M
D001628:Beverages / Q000032:analysis*; D005504:Food Analysis; D005506:Food Contamination / Q000032:analysis*; D008900:Mineral Waters / Q000032:analysis*; D009566:Nitrates / Q000032:analysis*; D009573:Nitrites / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet; D013662:Tea / Q000737:chemistry*; D014675:Vegetables / Q000737:chemistry*
D008900:Mineral Waters; D009566:Nitrates; D009573:Nitrites; D013662:Tea