Abstract
A hydrophobic drug, rifampin (RFP), was molecularly encapsulated into hydroxylpropyl-β-cyclodextrin (HCD) to form a molecular inclusion complex (MRICD) with higher solubility and stability. A solid-state grinding method was applied to prepare MRICD for 0.5h. The inclusion ratio, binding constant and the change of Gibbs free energy estimated from the phase solubility diagram and/or by the ultraviolet–visible spectroscopic method were 1:1, ∼218mol/L and −1.767KJ/mol, respectively. Differential scanning calorimetry and Fourier transformed infrared spectra of MRICD confirmed the molecular interactions between RFP and HCD. Morphological differences between MICDH and RFP further confirmed the molecular encapsulation of RFP. The most probable configuration of MRICD was estimated via computer simulation. MRICD had a higher dissolution rate than free RFP. Weibull function fit well the dissolution data of MRICD. Broth macrodilution experiments indicated that MRICD had good antibacterial activity. MRICD might be a promising system for oral or parenteral drug delivery to treat bacterial infections.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
