Monitoring of some metals in some canned foods | ||
| Journal of Pest Control and Environmental Sciences | ||
| Volume 8, Issue 3, December 2000, Pages 27-44 PDF (395.7 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpces.2000.460573 | ||
| Authors | ||
| Khaled A. Osman* 1; Nagwa M. Ghorab2 | ||
| 1Dept. of Pesticide Chemistry, Faculty of Agriculture, El-Shatby, Alexandria University. | ||
| 2Faculty of Toursim and Hotels, University of Menoufia. | ||
| Abstract | ||
| The present study aimed to monitor some metals such as zinc (Zn), copper (Cu), iron (Fe), lead (Pb), cadmium (Cd), calcium (Ca) and magnesium (Mg) in canned foods to assess food quality. Samples of canned topping cream chantilly, condensed milk, mushroom soft drinks, diet soft drinks, tuna, beef, processed cheese, chick pea dip, baked beans, salmon., fava beans, tomato juice, margarine and pineapple were evaluated. Canned foods were digested with HNO3, H2SO4 and HCIO4 and metals were determined using atomic spectrometry (AAS). Recoveries of Zn, Cu, Fe, Ca, Mg, Pb and Cd from 15 canned foods ranged from 88-107, 92-102, 88.5-101, 89-99.8, 89-98, 87-97 and 92-101%, respectively. Average means and ranges of concentrations (µ/g) found in canned foods were Zn, 1.547 (0.0-5.491); Cu, 0.353 (0.0-1.765); Fe, 9.76 (0.0-43.656); Pb, 0.325 (0.0-1.25); Cd, 0.027 (0.0-0.19); Ca, 34607 (85-330111) and Mg, 26692 (0.0-291180). It can be concluded that canned foods packed in metal cans may contain high level of metals because of the interaction between the container and contents and we recommend to use glass jars for food preservation order to minimize food contamination with metals from metal cans. | ||
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