Quantitative analysis of povidone-iodine thin films by X-ray photoelectron spectroscopy and their physicochemical propertiesReportar como inadecuado




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Acta Pharmaceutica, Vol.67 No.2 June 2017. -

In this study, povidone-iodine PVP-I has been formulated as a topical spray to produce a thin film for the controlled release of I2. By means of experimental design, 27 formulations containing glycerol, ethanol, PEG 400, copovidone and HFA 134a as a propellant were prepared. The pH values of all formulations were in the range of 6–7. The viscosity was within the range of 11.9–85.9 mPas. The surface tensions were 20.3 to 24.6 mN m–1 and the contact angles were between 19.3 and 38.7. The assays for the iodine contents were within acceptable range 80–120 %. X-ray photoelectron spectroscopy analysis revealed the ionized form of iodine was much higher than the unionized form. The MIC and MBC values of the PVP-I sprays against Staphylococcus aureus, S. epidermidis and Pseudomonas aeruginosa were higher than that of commercial PVP-I solution. The cytotoxicity study confirmed that the PVP-I spray had lower toxic effects on keratinocytes and fibroblasts compared to the commercial PVP-I solution. The formulation containing 59 % ethanol, 18 % copovidone and 12 % PEG 400 showed good antibacterial activity.

povidone-iodine; topical spray; bioactivity; cytotoxicity; X-ray photoelectron spectroscopy



Autor: ANONGTIP SA - ; Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Ya

Fuente: http://hrcak.srce.hr/



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