Estimation of the daily intake of nitrates and nitrites which children six to eleven years old, who attend primary schools in the City of Havana, may consume

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Abstract
In the present article information is given as to the estimated amounts of nitrates and nitrites, which about 12000 children (6 to 11 years of age) who attend semiboarding school system in primary schools of Plaza district in the City of Havana, may consume through foods offered by the Centralized Kitchen “Manuel Ascunce” and at home. The used methods were: The determination of nitrates and nitrites in foods reported by the Mixed Committee FAO/OMS in 1976 using a reducing column containing cadmium described by Follet et al. in 1963, the nutritional survey through individual score in 24 h normed by our institute and the variance analysis of simple classification. Estimated quantities of nitrates and nitrites, which these children may consume according to the offer of food they receive, are 34,3 mg of NaNO3and 1,3 mg of NaNO2. These values are below those recommended as acceptable daily intake reported by the Mixed Committee FAO/OMS. Therefore, there does not seem to exist a risk to health through consumption of nitrates and nitrites by the population under investigation.

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