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dc.contributor.authorAli, Hany S.M.*
dc.contributor.authorYork, Peter*
dc.contributor.authorBlagden, Nicholas*
dc.date.accessioned2011-03-23T16:26:25Z
dc.date.available2011-03-23T16:26:25Z
dc.date.issued22/06/2009
dc.identifier.citationAli, H. S. M., York, P. and Blagden, N. (2009). Preparation of hydrocortisone nanosuspension through a bottom-up nanoprecipitation technique using microfluidic reactors. International Journal of Pharmaceutics. Vol. 375, No. 1-2, pp. 107-113.en_US
dc.identifier.urihttp://hdl.handle.net/10454/4851
dc.descriptionnoen_US
dc.description.abstractIn this work, the possibility of bottom-up creation of a relatively stable aqueous hydrocortisone nanosuspension using microfluidic reactors was examined. The first part of the work involved a study of the parameters of the microfluidic precipitation process that affect the size of generated drug particles. These parameters included flow rates of drug solution and antisolvent, microfluidic channel diameters, microreactors inlet angles and drug concentrations. The experimental results revealed that hydrocortisone nano-sized dispersions in the range of 80¿450nm were obtained and the mean particle size could be changed by modifying the experimental parameters and design of microreactors. The second part of the work studied the possibility of preparing a hydrocortisone nanosuspension using microfluidic reactors. The nano-sized particles generated from a microreactor were rapidly introduced into an aqueous solution of stabilizers stirred at high speed with a propeller mixer. A tangential flow filtration system was then used to concentrate the prepared nanosuspension. The nanosuspension produced was then characterized using photon correlation spectroscopy (PCS), Zeta potential measurement, transmission electron microscopy (TEM), differential scanning calorimetry (DSC) and X-ray analysis. Results showed that a narrowsized nanosuspension composed of amorphous spherical particles with a mean particle size of 500±64 nm, a polydispersity index of 0.21±0.026 and a zeta potential of ¿18±2.84mVwas obtained. Physical stability studies showed that the hydrocortisone nanosuspension remained homogeneous with slight increase in mean particle size and polydispersity index over a 3-month period.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttp://dx.doi.org/10.1016/j.ijpharm.2009.03.029en_US
dc.subjectCrystal engineeringen_US
dc.subjectNanosuspensionen_US
dc.subjectHydrocortisoneen_US
dc.subjectBottom-upen_US
dc.subjectAntisolvent precipitationen_US
dc.subjectMicrofluidicsen_US
dc.titlePreparation of hydrocortisone nanosuspension through a bottom-up nanoprecipitation technique using microfluidic reactors.en_US
dc.status.refereedYesen_US
dc.typeArticleen_US


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