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Moreover, the physicochemical characterization of the respective supersaturated\u00a0complex was studied. The knowledge should be important for the description of processes that may take place in dairy products fortified with iron. Additionally, the synthesized complex can be utilized as a dietary supplement for the treatment of iron deficiency anemia (IDA). Finally, it was shown that formation of supersaturated iron-protein structures which include LTF often accompanies development of neurodegenerative diseases such as Alzheimer or Parkinson. Thus, the study can reveal some aspects of its pathogenesis process. The methodology of the investigation comprised the utilization of batch sorption study and applying Freundlich and Langmuir models. The complex also was characterized by numerous techniques: spectrometric (ICP-MS), spectroscopic (UV\u2013Vis, ATR-FTIR), electron microscopy (TEM\u2013EDX), SDS-PAGE. Based on obtained results the potential mechanisms of iron interaction with\u00a0protein were described. Moreover, the molecular docking was applied to visualize possible metal binding sites. The respective complex contains \u2248 33.0\u00a0mg\/g of iron which is nearly 50 Fe<jats:sup>3+<\/jats:sup> per one protein molecule. 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