Effect of β-cyclodextrin on Rheological Properties of some Viscosity Modifiers.

Indian J Pharm Sci

Department of Pharmaceutical Technology, Yalamarty Pharmacy College, Tarluwada, Visakhapatnam-530 052, India.

Published: January 2015

AI Article Synopsis

  • Cyclodextrins are innovative excipients widely used in the pharmaceutical industry and can interact significantly with conventional additives in drug formulations.
  • In a study, β-cyclodextrin was found to affect the rheological properties of viscosity modifiers differently, enhancing the viscosity of natural polymers like xanthan and guar gum while reducing the viscosity of semi-synthetic polymers like sodium carboxymethyl cellulose and methyl cellulose.
  • The research suggests that understanding these effects is crucial for adjusting viscosity modifier concentrations to create stable pharmaceutical disperse systems.

Article Abstract

Cyclodextrins are a group of novel excipients, extensively used in the present pharmaceutical industry. Sometimes they show significant interactions with other conventional additives used in the formulation of dosage forms. The effect of β-cyclodextrin on the rheological properties of aqueous solutions of some selected viscosity modifiers was studied in the present work. β-cyclodextrin showed two different types of effects on the rheology of the selected polymers. In case of natural polymers like xanthan gum and guar gum, enhanced apparent viscosity was found and in case of semi-synthetic polymers like sodium carboxymethyl cellulose and methyl cellulose, reduction in apparent viscosity was found. β-cyclodextrin was included at 0.5, 1 and 2% w/v concentrations into the polymeric solutions. These findings are useful in the adjustment of concentrations of viscosity modifiers during the formulation of physically stable disperse systems.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4293687PMC

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