作者: Andreza Ribeiro , Ana Figueiras , Delfim Santos , Francisco Veiga
DOI: 10.1208/S12249-008-9143-8
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摘要: The aim of this study is to confirm the formation inclusion complexes between miconazole (MCZ) and two derivatives beta-cyclodextrin, methyl-beta-cyclodextrin (MβCD) 2-hydroxypropyl-beta-cyclodextrin (HPβCD) in aqueous solution by phase solubility studies. Inclusion with MβCD solid state were then prepared different methods, i.e., kneading, coevaporation (COE), spray-drying (SD), lyophilization (LPh). physicochemical properties these subsequently studied means differential scanning calorimetry, Fourier transform infrared spectroscopy, electron microscopy, X-ray diffraction techniques. Phase diagrams HPβCD classified as AP type, indicating 1:1 1:2 stoichiometric complexes. apparent stability constants (KS) calculated from diagram 145.69 M−1 (K1:1) 11.11 (K1:2) for 126.94 2.20 HPβCD. method preparation was shown greatly affect formed complex. Hence, LPh, SD, COE methods produce true MCZ MβCD. In contrast, crystalline drug still clearly detectable kneaded (KN) product.