Coprecipitation modulates the solubility of minerals in bovine milk |
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| Authors: | L S Nelson F A Jacobs J G Brushmiller |
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| Affiliation: | 1. UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA, Australia;2. The UWA Institute of Agriculture, The University of Western Australia, Perth, WA, Australia;3. The Commonwealth Scientific and Industrial Research Organisation (CSIRO) Environment, Urrbrae, SA, Australia;4. ICAR-National Academy of Agricultural Research Management, Rajendranagar, Telangana State, India;5. Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Srikakulam, Andhra Pradesh, India;6. Department of Primary Industries and Regional Development, SoilsWest, Northam, WA, Australia;7. University of South Africa, College of Agriculture and Environmental Sciences, Environmental Sciences Department, Florida, South Africa;8. Lincoln University, College of Agriculture, Environment and Human Sciences, Jefferson City, MO, United States;9. Elizabeth Macarthur Agricultural Institute, Department of Primary Industries, Menangle, NSW, Australia;10. National University of Science and Technology, Department of Civil and Environmental Engineering, Muscat, Oman;11. School of Chemical Engineering, University of Adelaide, Adelaide, SA, Australia;12. Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, PR China;13. Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Zhejiang, Hangzhou, PR China;14. University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Wuppertal, Germany;15. Department of Agronomy, Kansas State University, Manhattan, KS, United States;1. Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China;2. State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China.;3. Beijing Innovation Centre for Engineering Science and Advanced Technology, Peking University, Beijing 100871, China |
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| Abstract: | The solubilities of zinc, iron, copper, magnesium, calcium, inorganic phosphate, and citrate in milk decreased when acidic milk preparations were neutralized. In decaseinated bovine milk soluble zinc, iron, and copper were reduced 90%, 60%, and 50%, respectively, as the pH was raised from 4 to 7. Simultaneous precipitation of minerals and citrate was confirmed by analysis of washed precipitate. We propose that the diminished solubilities of zinc, iron, copper, magnesium, and citrate are linked to the precipitation of calcium phosphate through one or more mechanisms of coprecipitation. Such control on mineral solubility may have an impact upon mineral absorption from milk. |
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