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• W2008978668 abstract "Films of alginate and gelatin, cross-linked with Ca2+, with ciprofloxacin hydrochloride as model drug incorporated in different concentrations, were obtained by a casting/solvent evaporation method. Chemical, morphological and mechanical properties characterization was carried out, as well as the studies of the factors that influence the drug releasing from alginate and gelatin films. These factors included the component ratio of alginate and gelatin, the loaded amount of ciprofloxacin hydrochloride, the pH and ionic strength of the release solution, the thickness of the drug loaded films and the cross-linking time with Ca2+ and others. The best values of the tensile strength at 101.5 MPa and breaking elongation at 19.4% of blend films were obtained when the gelatin content was 50 wt.%. The results of controlled release tests showed that the amount of ciprofloxacin hydrochloride released decreased with an increase in the proportion of gelatin present in the film. Moreover, the release rate of drug decreased as the amount of drug loaded in the film increased. The alginate/gelatin films were also sensitive to pH and ionic strength. For pH 7.4 the drug release was faster compared to pH 3.6, being simultaneously accelerated by a higher ionic strength. It was observed that in simulated intestinal fluid, the thickness of the film increased from 30 μm to 55 μm with a concomitant reduction of the ciprofloxacin hydrochloride concentration from 100% to 83.5%. When the cross-linking time of these films in the Ca2+ solution were 0 min, 5 min, 15 min and 30 min, the drug release rate attained 100%, 100%, 77.6% and 52.4%, respectively, within 24 h. All the results indicated that the alginate/gelatin film was potentially useful in drug delivery systems." @default.
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• W2008978668 date "2006-09-01" @default.
• W2008978668 modified "2023-10-11" @default.
• W2008978668 title "Alginate/gelatin blend films and their properties for drug controlled release" @default.
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• W2008978668 doi "https://doi.org/10.1016/j.memsci.2006.01.002" @default.
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