Metales en productos elaborados con tomate
In order to determine normal and contaminating levels of metallic elements in different commercial tomato products, 47 samples coming from different industries in Cuyo (Argentina) were selected. The products included were double and triple extracts, smashed tomatoes, ground tomatoes, peeled tomato...
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| Publicado en: | Revista de la Facultad de Ciencias Agrarias |
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| Autores principales: | , , , |
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| Acceso en línea: | https://bdigital.uncu.edu.ar/fichas.php?idobjeto=9990 |
| Sumario: | In order to determine normal and contaminating levels of metallic elements in
different commercial tomato products, 47 samples coming from different industries in
Cuyo (Argentina) were selected. The products included were double and triple extracts, smashed tomatoes, ground tomatoes, peeled tomatoes and portuguese sauce. Laboratory samples were carefully conditioned, dried by means of air circulating heaters and mineralized via dry process to obtain hydrochloric extracts with a 1:50 final dilution.
Lead, cadmium, chromium, copper, iron and zinc contents were measured in the extracts using a Perkin-Elmer atomic absorption spectro-photometer.
Statistical analysis of the analytical results included the most important sample
characteristics such as mean value, standard deviation and variance for every tested
element. Results show that lead was present in all the tested samples, in levels ranging from 3,28 mg/kg to 56,29 mg/kg. Chromium was present in 61,7 % of the samples, with levels between 1,66 and 5,53 mg/kg.
Cadmium was found in 78,7 % of the samples, in levels ranging between 0,13 and 0,82 mg/kg. Results for the tomato normal
metallic constituents show a high variation coefficient, standing out the iron content, with minimum values of 47,97 mg/kg and maximum values of 2 576 mg/kg. Extreme
values for copper were 8,38 and 115,44 mg/ kg while for zinc extreme values were 16,66 and 88,63 mg/kg.
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