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  • Title: [Mineral nutrient content in cow milk and dairy products in Argentina].
    Author: Closa SJ, de Landeta MC, Andérica D, Pighín A, Cufré JA.
    Journal: Arch Latinoam Nutr; 2003 Sep; 53(3):320-4. PubMed ID: 14694818.
    Abstract:
    Cow milk and dairy products supply essential inorganic elements for humans, and constitute the most important source of bioavailable calcium in our diet. In order to obtain data about mineral nutrient composition of dairy products that are produced and sold in Argentina, the contents of Ca, P, Mg, Na, K, Fe, Zn and Cu in whole and low fat fluid milk, dried milk and yogurt were analyzed. P was assessed by a colorimetric method, and the other elements by atomic absorption spectroscopy. In raw milk, the mineral content shows a certain degree of variability, in addition to the variability introduced by the different processing conditions, in order to meet the requirements prescribed by trade regulations and to produce dairy products. In all cases, skimming increases the concentration of mineral nutrients, which is especially remarkable in Ca contained in skimmed milk powder. In yogurt, added milk solids like dried milk or evaporated milk appreciably increase the mineral content, even more so if ultrafiltrates are used. These ultrafiltrates increase the Ca/P ratio, which probably improves Ca bioavailability. The results obtained in these analyses provide data that are not yet available from the National Table of Food Composition, and which prove necessary and fundamental for nutritional and dietary evaluation.
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