TRACE METALS IN YOGHURT AND 'NONO' sold in KEFFI, NASAKAWA STATE, NIGERIA
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Abstract
presence of trace elements in 30 yoghurt and 'nouo1 samples from Keffi metropolis of Nasarawa state were nined. Atomic absorbtion spectrometer with microwave sample digestion was used in this study. The \enls t-test calculated were: Zn (15.29), Ca (16.84), Mg (16.31), Sc (S.04), Cu (23.59), and Fe (12.37) while students t-test tabulated was 1.699. whereas the students t-test calculated for chromium was 0.73 and lenls t-test tabulated was 1.708. The trace elements in yoghurt decreased in the order of Cn>Fc>Cu>Cr>Sc>Zn Ca>Mg>Fe>Cr>Cu>Se>Zn in *Nono. No statistically significant difference was observed at the 5% level of lability in the case of Zn, Ca, Mg, Se, Cu, Fe, and Cr in the yoghurt and 'nono' assessed, but there was a \fican t difference in the con tents of Fe. Al, Pb, and Cd in the majori ty of the sample concen tru lions were below ction limit of the equipment used. The level of the trace elements investigated in yoghurt and 'nono' was high igh compared to the Dietary Reference Intakes (DRIs), Recommended Dietary Allowances (DRA) and World llh Organisation (WHO) lewis for consumers. Heavy metals which are toxic even at low concentrations icularly, Al, Pb, Cd were not detected in the samples investigated and as sudi, the consumption of yoghurt \Nono' will pose no danger to consumers. Therefore, the two products, yoghurt and ‘nono’ arc good sources inerals required bythehuman body1.