OLEOGELS OF OLIVE OIL AND SOYBEAN OIL FOR TOPICAL DRUG DELIVERY: A COMPARATIVE ANALYSIS

  • DIPANJANA ASH Department of Pharmacy, NSHM Knowledge Campus, Kolkata-Group of Institutions, 124 B L Saha Road, Kolkata 700053
  • SUTAPA BISWAS MAJEE Department of Pharmacy, NSHM Knowledge Campus, Kolkata-Group of Institutions, 124 B L Saha Road, Kolkata 700053
  • GOPA ROY BISWAS Department of Pharmacy, NSHM Knowledge Campus, Kolkata-Group of Institutions, 124 B L Saha Road, Kolkata 700053

Abstract

Objective: The objective of the present investigation was to develop olive and soybean oil-based oleogels with Span 40 and/or Tween 80 (as gelator and/or surfactant) and determine the critical gelator concentration (CGC), characterise and compare the rheological, thermal properties and drug release profile of the gels formed for topical delivery.


Methods: Olive and soybean oil-based Span 40 and Span 40/Tween 80 oleogel formulations were prepared by solid fiber mechanism and subjected to organoleptic evaluation, FT-IR spectroscopy, thermal analysis, rheological study, kinetic modeling of gelation and drug release.


Results: The critical gelator (Span 40) concentration was found to be lower for olive oil (12% w/v) and depend on the type of oil. Tween 80 reduced CGC of soybean oleogels only. Soybean oil-based oleogel containing 18% w/v Span 40 was found to form more flexible, less viscous and thermally less stable formulation with better release of paracetamol as evident from lower melt flow index, Tg value, lower β and higher α value compared to olive oil-based oleogel with 12% w/v Span 40 (CGC). Surfactant addition can be assumed to modify the microarchitecture of the oleogels to a great extent to produce more flexible and thermally stable gels with even better drug release profile. Span-Tween based soybean oleogel formed a gel-matrix whereas matrix in olive oil-based oleogels containing Span only became slightly flexible to release the drug in zero-order fashion on the addition of surfactant cogelator.


Conclusion: Nature of oil exerts profound influence on the rheological, thermal and release profile of oleogels containing Span 40 as gelator and/or Tween 80 as surfactant cogelator.

Keywords: Accelerated thermal stability, Cogelator, Critical gelator concentration, Gel-matrix, Gel-sol transition temperature, Melt flow index, Span 40, Tween 80

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ASH, D., S. B. MAJEE, and G. R. BISWAS. “OLEOGELS OF OLIVE OIL AND SOYBEAN OIL FOR TOPICAL DRUG DELIVERY: A COMPARATIVE ANALYSIS”. International Journal of Pharmacy and Pharmaceutical Sciences, Vol. 11, no. 8, June 2019, pp. 4-10, doi:10.22159/ijpps.2019v11i8.34040.
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