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AAPS PharmSciTech

, Volume 11, Issue 3, pp 1383–1390 | Cite as

Development and Evaluation of Emulsions from Carapa guianensis (Andiroba) Oil

  • Magda R. A. Ferreira
  • Rosilene R. Santiago
  • Tatiane P. de Souza
  • Eryvaldo S. T. Egito
  • Elquio E. Oliveira
  • Luiz A. L. Soares
Research Article

Abstract

Carapa guianensis, a popular medicinal plant known as “Andiroba” in Brazil, has been used in traditional medicine as an insect repellent and anti-inflammatory product. Additionally, this seed oil has been reported in the literature as a repellent against Aedes aegypti. The aim of this work is to report on the emulsification of vegetable oils such as “Andiroba” oil by using a blend of nonionic surfactants (Span 80® and Tween 20®), using the critical hydrophilic–lipophilic balance (HLB) and pseudo-ternary diagram as tools to evaluate the system’s stability. The emulsions were prepared by the inverse phase method. Several formulations were made according to a HLB spreadsheet design (from 4.3 to 16.7), and the products were stored at 25°C and 4°C. The emulsion stabilities were tested both long- and short-term, and the more stable one was used for the pseudo-ternary diagram study. The emulsions were successfully obtained by a couple of surfactants, and the HLB analysis showed that the required HLB of the oil was 16.7. To conclude, the pseudo-ternary diagram identified several characteristic regions such as emulsion, micro-emulsion, and separation of phases.

KEY WORDS

Carapa guianensis oil emulsions hydrophilic–lipophilic balance (HLB) pseudo-ternary diagram stability 

Notes

ACKNOWLEDGEMENTS

The authors are grateful for the financial support received from CNPq (477131/2007-7), FAPERN/MCT/CT-INFRA/CNPq (PPP 2007), and UFRN (Propesq/Pibic). The authors also thank Glenn Hawes, from the University of Georgia—American Language Program, for his editing this manuscript.

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Copyright information

© American Association of Pharmaceutical Scientists 2010

Authors and Affiliations

  • Magda R. A. Ferreira
    • 1
  • Rosilene R. Santiago
    • 1
  • Tatiane P. de Souza
    • 2
    • 4
  • Eryvaldo S. T. Egito
    • 1
    • 4
  • Elquio E. Oliveira
    • 3
  • Luiz A. L. Soares
    • 4
    • 5
  1. 1.Departamento de Farmácia—Centro de Ciências da SaúdeUniversidade Federal do Rio Grande do Norte—UFRNNatalBrazil
  2. 2.Departamento de Medicamentos e AlimentosUniversidade Federal do Amazonas—UFAMManausBrazil
  3. 3.Centro de Ciências Biológicas e Sociais AplicadasUniversidade Estadual da Paraíba—UEPBJoão PessoaBrazil
  4. 4.Programa de Pós-Graduação em Ciências FarmacêuticasUniversidade Federal do Rio Grande do Norte—UFRNNatalBrazil
  5. 5.Departamento de Ciências FarmacêuticasUniversidade Federal de Pernambuco—UFPERecifeBrazil

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