Table of Contents
International Scholarly Research Notices
Volume 2014, Article ID 439702, 5 pages
http://dx.doi.org/10.1155/2014/439702
Research Article

Determining Nitrate and Nitrite Content in Beverages, Fruits, Vegetables, and Stews Marketed in Arak, Iran

1Department of Food Safety and Hygiene, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
2Arak University of Medical Sciences, Arak, Iran
3Payame Noor University, Tehran, Iran

Received 5 July 2014; Revised 1 December 2014; Accepted 8 December 2014; Published 25 December 2014

Academic Editor: Julian Blasco

Copyright © 2014 Mohammad Rezaei et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background and Objectives. Presence of excessive nitrite and nitrate in foodstuff can have toxic and carcinogenic effects on humans. This study is aimed at measuring nitrate and nitrite in different foodstuffs available in Arak city market, Iran, in 2013. Methods. Totally 323 samples including stew (102 samples), beverage (116 samples), fruit (55 samples), and vegetables (50 samples) were randomly collected and analyzed according to official AOAC method 973 and ISO 6635 through spectrophotometric method. Results. Average concentration of nitrate and nitrite in the samples was 6.58–136.76, 1.52–38.22 mg kg−1 or liter, respectively. Presence of nitrate and nitrite was confirmed in all samples. High levels of nitrate and nitrite were observed in celery and ghormeh stew; and lower level of nitrate and nitrite was found in traditionally produced vinegar, verjuice, and tomato. Conclusions. It was found that the mean values for nitrite in investigated products were higher than ADI levels of WHO.