Nitrate Determination of Vegetables in Varzeghan City, North-western Iran

Nitrate Determination of Vegetables in Varzeghan City, North-western Iran

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Background: Vegetables play an important role in human nutrition.Nitrate content is a signifi-cant quality criterion to determine characteristic of vegetables.About 80% of nitrate intake in human is from vegetables and fruits.High dietary intake of nitrate is seen as an undesirable be-cause of its association with gastric cancer and infantile methemoglobinemia.

Varzeghan, North-western Iran is one of the cities with high Age-standardized incidence rates kaiser copy stands (ASR) of gastric can-cer in Iran.Currently, in Varzeghan there is no available and accurate information describing ni-trate concentration as one of the important risk factors of vegetables for human consumption.Methods: In this cross sectional study totally 11 types of vegetables (cabbage, lettuce, spinach, parsley, coriander, dill, campicon.com leek, fenugreek, tarragon, fumitory and mint) from several different green-grocery of Varzeghan were collected in spring (April) and autumn (November and December) 2011 and their nitrate contents were analyzed.Results: Mean nitrate contents at the above noted fresh vegetables were 161, 781, 83, 707, 441,501, 1702, 684, 805, 772 and 191 mg NO3-kg-1 respectively.

In none of the 11 fresh vegetablesnitrate content were not more than established limitations.Conclusion: Nitrate concentrations were below of others reported at different countries.The mean concentration of nitrate at all vegetables in autumn was higher than in spring significantly.