Viana do Castelo (Monserrate), Portugal
The concentrations of major metals, calcium (Ca), phosphorus (P), magnesium (Mg), potassium (K), sodium (Na), and trace metals, copper (Cu), zinc (Zn), iron (Fe), manganese (Mn), and Fe/Zn ratio in longissimus lumborum muscle from Bravia kid goat breed were determined by atomic absorption spectroscopy to compare differences in concentrations of these elements among sexes and to investigate correlations among the parameters. Pigment concentration and colour parameters were also evaluated and analysed with metals concentration. The levels of Ca, K, Cu and Zn, were not different between gender, while that of P and Na were significant (p < 0.01) and that of Mg and Fe (p < 0.001). Female contained 1.3 times greater Fe/Zn ratio than male. There were high correlations among the mineral contents, especially between P and Mg (p<0,001), P and K (p<0,01), Mg and K (p<0,01). There were also high correlations between Fe and a* (redness) and Fe and pigments (p<0.05). The most interesting findings of this work, for their impact on human nutrition and health, were represented by a high concentration in trace metals specially Cu, Zn and Fe and a good Fe/Zn average ratio (0.30), that make the Bravia kid goat meat a highly appreciable food product.
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