Vol. 3, Issue 4 (2018)
Assessment of the levels of trace metals concentration in some brands of canned tomato paste in Calabar markets
Author(s): Osabor Vincent Ndem, Ntinya Mbuotidem Usen
Abstract: This study was designed to evaluate the levels of trace elements concentration in some brands of canned tomato pastes sold in Calabar markets. 5 brands of canned tomato pastes: Clappa, Tasty Tom, La Mama, La Jonic and Rico Giko were obtained from Watt market, Marian market, Ikot Ishie market, Mbukpa market and Edim Otop market across Calabar, Cross River State and were subjected to Unicam (SOLAR AAS 969) after acid digestion. The levels of the following trace metals: Fe, Cu, Mn, Cr and Ni were determined and the results obtained showed 5.45-8.23mg/kg, 1.87-3.64mg/kg, 0.33-0.49mg/kg, 0.31-0.44mg/kg and 0.09-0.23 mg/kg respectively. The average Cr levels in the five samples were significantly high and exceeded the WHO/FAO daily intake of 0.05mg/kg. The copper concentration, 3.64mg/kg in Rico Giko brand was observed slightly higher than 3.0mg/kg intake/day. The Fe content of La Mama and La Jonic appeared were slightly higher other brands. Manganese levels appeared in the decreasing order of Clappa>La Jonic>Tasty Tom>La Mama>Rico Giko, while the Ni content of the studied tomato pastes agrees strongly with WHO/FAO daily intake recommendations.