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Two novel water-soluble morin hydrate (MH) complexes, composed of a hydrophobic MH core and hydrophilic cyclodextrin shell, were prepared and systematically investigated in both aqueous solution and the solid state by means of UV-Vis spectroscopy, 1 H NMR, 2D NMR (ROESY), SEM, FT-IR, DSC, TGA, and XRD analysis. The characterization information resulting from these investigations revealed that the MH/cyclodextrin inclusion complexes formed by the MH with CD in 1:1 stoichiometry, and demonstrated satisfactory water solubility. The MH/cyclodextrin complexes still maintained antibacterial activity in vitro test against Staphylococcus aureus bacteria.Si-Hao Ren and Jian-Qiang Zhang contributed equally to this work. Electronic supplementary materialThe online version of this article (