alexa Abstract | Influence of additives on Fabrication and Release from Protein loaded PLGA microparticles

Journal of Chemical and Pharmaceutical Research
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Abstract

The purpose of this study was to investigate the effect of additives, poly(ethylene glycol) (PEG) 1450, poloxamer 407, polyvinyl alcohol (PVA) and Sodium chloride (NaCl) in order to improve physico-chemical characteristics, encapsulation efficiency and in vitro release of a bovine serum albumin (BSA), form poly(D,L-lactic-co-glycolic acid) microparticles prepared by the w/o/w solvent evaporation method. The addition of PEG 1450 and 0.05 M NaCl changed the surface characteristics of microparticles and also affect the encapsulation efficiency and burst release of protein. The effect of surfactants: polyvinyl alcohol and poloxamer 407 used in the outer water phase was investigated. The surfactant/PLGA mass ratio played an important role in the preparation procedure of the particles. This ratio was found to be approximately 0.5 for polyvinyl alcohol (PVA) and 5 for poloxamer 407 in order to achieve microparticles with narrow size distribution (<70 μm) and good encapsulation efficiency (>70%).

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Author(s): Yagnesh Bhatt and Dushyant Shah

Keywords

Encapsulation efficiency, Initial release, Bovine serum albumin, Poly (lactide-co-glycolide) , Modified Lowry Protein Assays, Protein

 
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