Analysis of Some Trace and Toxic Element Concentrations of Sheep Milk by Using an Inductively Coupled Plasma Optical Emission Spectrometer
2022
Altun, Serap Kilic | Paksoy, Nilgun
In sheep farming, especially in extensive livestock systems, monitoring of trace and toxic element concentrations is important to determine the nutritional condition of animals, besides the nutritional importance of milk and the amount of potentially toxic element residues in dairy products. In this study, the concentrations of trace elements (zinc, copper, chromium, manganese, nickel, cobalt) and toxic elements (lead, cadmium) in raw sheep milk samples (n = 51) purchased from local markets in Şanlıurfa province were determined by ICP-OES. Zinc, copper, chromium, manganese, nickel levels in raw milk samples were determined as 4967.9±2968.2, 228.7±332.1, 155.8±39.3, 1180±30.4, 220±50,3 µg/L, respectively. Cobalt was found below the detection limit in milk samples. Generally, the levels of the trace elements were within the ranges reported in other studies in sheep milk. Lead was detected in all milk samples, with an average level of 0.11±0.03 µg/L, which was below the maximum limits set in the Turkish Food Codex. Therefore, it did not pose any risk for human consumption. Cadmium was determined at the level of 5.12 µg/L in only one sample. The maximum amount of cadmium allowed in the Turkish Food Codex Communiqué on Determination of the Maximum Levels of Certain Contaminants in Foodstuffs is 0.01-1.0 mg/kg for various foods and the value determined in this study is within the safe limits. As a result, it was determined that the sheep milk analyzed in this study did not threaten public health in terms of toxic elements, and the levels of trace elements were comparable with other study data.
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