Nanoemulsions for delivery of flavonoids: formulation and in vitro release of rutin as model drug

Pharm Dev Technol. 2014 Sep;19(6):677-80. doi: 10.3109/10837450.2013.823989. Epub 2013 Aug 12.

Abstract

The aim of the present study is to design and characterize a rutin-loaded nanoemulsion (RT-NE) and determine the release profile of the drug in vitro. RT-NE was prepared by a high pressure homogenization technique. The obtained droplets were analyzed by optical microscopy and were shown to be of spherical shape. By dynamic light scattering, characterization of RT-NE showed an average diameter of 127 nm, polydispersity index of 0.168 and zeta potential values near neutrality (-3.49 mV). Encapsulation efficiency was of ∼82% (82.3 ± 1.62%). Drug release was characterized by an initial burst which decreased over the time, showing a sustained release profile. After 24 h, rutin released from NE reached nearly 65%. The developed system proved to be stable and suitable to encapsulating poorly water-soluble drugs.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chemistry, Pharmaceutical / methods
  • Drug Delivery Systems / methods
  • Emulsions / chemistry*
  • Flavonoids / chemistry*
  • Nanoparticles / chemistry*
  • Particle Size
  • Solubility
  • Water / chemistry

Substances

  • Emulsions
  • Flavonoids
  • Water