Controlled Delivery of Gentamicin Using Poly(3-hydroxybutyrate) Microspheres

Francis L, Meng D, Knowles J, Keshavarz T, Boccaccini AR, Roy I (2011)

Publication Type: Journal article

Publication year: 2011

Journal

International Journal of Molecular Sciences MDPI

Publisher: MDPI

Pages Range: 4294-4314

Journal Issue: 12

DOI: 10.3390/ijms12074294

Abstract

Poly(3-hydroxybutyrate), P(3HB), produced from Bacillus cereus SPV using a simple glucose feeding strategy was used to fabricate P(3HB) microspheres using a solid-in-oil-water (s/o/w) technique. For this study, several parameters such as polymer concentration, surfactant and stirring rates were varied in order to determine their effect on microsphere characteristics. The average size of the microspheres was in the range of 2 μm to 1.54 μm with specific surface areas varying between 9.60 m 2/g and 6.05 m 2/g. Low stirring speed of 300 rpm produced slightly larger microspheres when compared to the smaller microspheres produced when the stirring velocity was increased to 800 rpm. The surface morphology of the microspheres after solvent evaporation appeared smooth when observed under SEM. Gentamicin was encapsulated within these P(3HB) microspheres and the release kinetics from the microspheres exhibiting the highest encapsulation efficiency, which was 48%, was investigated. The in vitro release of gentamicin was bimodal, an initial burst release was observed followed by a diffusion mediated sustained release. Biodegradable P(3HB) microspheres developed in this research has shown high potential to be used in various biomedical applications. © 2011 by the authors.

Authors with CRIS profile

Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

University of Westminster GB United Kingdom (GB) Imperial College London / The Imperial College of Science, Technology and Medicine GB United Kingdom (GB) University College London (UCL) GB United Kingdom (GB)

How to cite

APA:

Francis, L., Meng, D., Knowles, J., Keshavarz, T., Boccaccini, A.R., & Roy, I. (2011). Controlled Delivery of Gentamicin Using Poly(3-hydroxybutyrate) Microspheres. International Journal of Molecular Sciences, 12, 4294-4314. https://dx.doi.org/10.3390/ijms12074294

MLA:

Francis, Lydia, et al. "Controlled Delivery of Gentamicin Using Poly(3-hydroxybutyrate) Microspheres." International Journal of Molecular Sciences 12 (2011): 4294-4314.

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