Formation of microspherical particles of albumin with model drug using spray drying process

Abstract

Spray drying method enables to produce microspherical particles with narrow size distribution. Production of such microparticles is relevant for the development of the advanced systems for inhalation delivery of drugs. The aerosol particles diameter must be between 1 and 3 μm. Composite microparticles based on bovine serum albumin and model drug phenacetin were produced in the present work using the spray-drying method. The absence of a crystalline phase of the drug in composite microparticles was verified using several physicochemical methods. The average radius of the produced microparticles was found to be 1 μm based on the results from scanning electron microscopy. The rate of the dissolution of the drug included in microparticles is faster than that of crystalline phenacetin. The obtained results can be used for the development of the method for preparation of composite microparticles based on protein molecules using the spray-drying technique.