Nanoprecipitation process: From encapsulation to drug delivery

Publication date: 30 October 2017 Source:International Journal of Pharmaceutics, Volume 532, Issue 1 Author(s): Claudia Janeth Martínez Rivas, Mohamad Tarhini, Waisudin Badri, Karim Miladi, Hélène Greige-Gerges, Qand Agha Nazari, Sergio Arturo Galindo Rodríguez, Rocío Álvarez Román, Hatem Fessi, Abdelhamid Elaissari Drugs encapsulation is a suitable strategy in order to cope with the limitations of conventional dosage forms such as unsuitable bioavailability, stability, taste, and odor. Nanoprecipitation technique has been used in the pharmaceutical and agricultural research as clean alternative for other drug carrier formulations. This technique is based on precipitation mechanism. Polymer precipitation occurs after the addition of a non-solvent to a polymer solution in four steps mechanism: supersaturation, nucleation, growth by condensation, and growth by coagulation that leads to the formation of polymer nanoparticles or aggregates. The scale-up of laboratory-based nanoprecipitation method shows a good reproducibility. In addition, flash nanoprecipitation is a good strategy for industrial scale production of nanoparticles. Nanoprecipitation is usually used for encapsulation of hydrophobic or hydrophilic compounds. Nanoprecipitation was also shown to be a good alternative for the encapsulation of natural compounds. As a whole, process and formulation related parameters in nanoprecipitation technique have critical effect on nanoparticles characteristics. ...
Source: International Journal of Pharmaceutics - Category: Drugs & Pharmacology Source Type: research