The Comparison of Essential Metals (Fe, Mg, Ca, Zn, Cu, and Mn) in Bali Cattle and Goat Liver

Abstract

Nutrient metabolism in the liver is greatly influenced by essential metal contents such as iron (Fe), magnesium (Mg), calcium (Ca), zinc (Zn), copper (Cu), and manganese (Mn), which serve as enzyme cofactors. The liver of cattle and goats is beneficial for the metabolism of consumers' bodies since they are widely consumed by the public. Therefore, this research aims to compare essential metal contents such as Fe, Mg, Ca, Zn, Cu, and Mn in the liver of cattle and goats. A total of 30 liver samples were obtained from slaughterhouses in Denpasar City, Bali Province of Indonesia. All cattle liver samples were collected from Bali cattle, while that of goats were a mixture of several breeds. Liver tissue was extracted, and the essential metals were measured using atomic absorption spectrophotometry (AAS). The average essential metal contents in cattle were Fe=79.18±53.96ppm, Mg=86.29±68.05ppm, Ca=80.45±77.87ppm, Zn=53.64±4.92ppm, Cu=24.13±16.87ppm, and Mn=1.29±0.48ppm. Meanwhile, the average results in goats were Fe=57.1718±18.32ppm, Mg=33.81±2.49ppm, Ca=33.77±2.21ppm, and Mn=2.22±0.49ppm. Zn and Cu were not detected in any of the 30 goat liver samples examined. It was discovered that Fe, Mg, Ca, Zn, and Cu in cattle liver are higher than in goat liver, except for Mn. Therefore, it can be concluded that the quality of Bali cattle liver is higher than that of the goat in terms of Fe, Mg, Ca, Zn, and Cu, while the quality of goat liver is better in terms of Mn content.