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Preformulation studies on grewia gum as a formulation excipient

Abstract

Grewia gum is a naturally occurring polysaccharide which has potential as a pharmaceutical excipient. Differential scanning calorimetry and Fourier transform infrared (FT-IR) spectroscopy techniques were used to examine the thermal and molecular behaviours, respectively, of mixtures of grewia gum with cimetidine, ibuprofen or standard excipients, to assess potential interactions. No disappearance or broadening of the melting endotherm was seen with cimetidine or ibuprofen. Similarly, there was no interaction between grewia gum and the standard excipients tested. The results obtained using thermal analyses were supported by FT-IR analysis of the material mixtures. Grewia gum is an inert natural polymer which can be used alone or in combination with other excipients in the formulation of pharmaceutical dosage forms.

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Acknowledgements

Financial support for this work was provided by the Commonwealth Scholarship Commission and Aston University, Birmingham, UK.

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Correspondence to Elijah I. Nep.

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Nep, E.I., Conway, B.R. Preformulation studies on grewia gum as a formulation excipient. J Therm Anal Calorim 108, 197–205 (2012). https://doi.org/10.1007/s10973-011-1782-4

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  • DOI: https://doi.org/10.1007/s10973-011-1782-4

Keywords

  • Cimetidine
  • Ibuprofen
  • Grewia gum
  • Excipients
  • DSC
  • FT-IR