alexa Application of multiple response optimization technique to extended release formulations design.
Chemical Engineering

Chemical Engineering

Journal of Thermodynamics & Catalysis

Author(s): Hamed E, Sakr A, Hamed E, Sakr A

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Abstract The purpose of the present study was to apply response surface methodology and multiple response optimization utilizing superimposed contour diagrams to design extended release formulations with a preplanned release profile. Bumetanide solution was layered on sugar pellets followed by coating with various coating formulations according to a central composite statistical design using a Glatt GPCG 1 Wurster Fluid Bed. The coated pellets were tested for their release profiles and the percent of drug released after 1, 4 and 8 h were used to describe and optimize the release process. Statistical models describing the percent bumetanide released after 1, 4 and 8 h were developed and the corresponding contour diagrams were superimposed to predict the coating formulation parameters expected to produce target release profile. The pellets coated with the designed coating formulation were tested for their release profiles in comparison to the target profile. According to the model-independent approach using similarity factor (F2), the dissolution profile of the designed formulation and the expected target profile were found to be similar. It was concluded that response surface methodology and multiple response optimization could be successfully used to design and optimize extended release formulations with desired preplanned release profile.
This article was published in J Control Release and referenced in Journal of Thermodynamics & Catalysis

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