Nitrites and nitrates in horticultures produced by the conventional, organic and hydroponic cultivation systems in the Metropolitan Region of Curitiba
factors as temperature, quantity of rainfall, irrigation, nitrogen fertilization regime, and sunstroke. Occurrence of contamination with chemical compounds may possibly cause risks to human health, related to the possibility of N-Nitrosamines formation, which may induce metahemoglobinemia, and becau...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2004 |
| País: | Brasil |
| Institución: | Instituto Adolfo Lutz |
| Repositorio: | Revista do Instituto Adolfo Lutz (Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.periodicos.saude.sp.gov.br:article/34851 |
| Acceso en línea: | https://periodicos.saude.sp.gov.br/RIAL/article/view/34851 |
| Access Level: | acceso abierto |
| Palabra clave: | nitrites nitrates nitrosamines organic foods hydroponic foods HPIC nitritos nitratos nitrosaminas alimentos orgânicos alimentos hidropônicos |
| Sumario: | factors as temperature, quantity of rainfall, irrigation, nitrogen fertilization regime, and sunstroke. Occurrence of contamination with chemical compounds may possibly cause risks to human health, related to the possibility of N-Nitrosamines formation, which may induce metahemoglobinemia, and because of their cancerogenic, teratogenic, and mutagenic effects. The goal of this study was to evaluate the drift of nitrites and nitrates present in conventional (C), organic (O) and hydroponic (H) horticultures produced and/or commercialized in the metropolitan region of Curitiba. A total of 141 samples of C, O and H horticultures were collected, and nitrites and nitrates contents were determined by means of HPIC. The highest concentration levels (in mg/kg) of nitrites and nitrates were detected in: C, O and H watercress (498.37, 3259.59, 2623.60, respectively); C, O and H lettuce (798.86, 459.98, 1778.64, respectively); C and O spinach (1376.53, 877.73, respectively). Consequently, according to the nitrites and nitrates contents established by DDI, EC, and FAO/WHO for a person weighting 70 kg, the analyzed horticultures presented highly restricting values for human consumption, that is: 81g and 100g in organic and hydroponic watercress, respectively; 330g and 148g in organic and hydroponic lettuce, respectively; 192g and 301g in conventional and hydroponic spinach, respectively... |
|---|