A low-cost ultrasonic spray dryer to produce spherical microparticles from polymeric matrices

AUTOR(ES)

Luz, Priscilla Paiva, Pires, Ana Maria, Serra, Osvaldo Antonio

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2007

RESUMO

The spray-drying technique has been widely used for drying heat-sensitive foods, pharmaceuticals, and other substances, because it leads to rapid solvent evaporation from droplets. This method involves the transformation of a feed from a fluid state into a dried particulate, by spraying the feed into a hot medium. Despite being most often considered a dehydration process, spray drying can also be used as an encapsulation method. Therefore, this work proposes the use of a simple and low-cost ultrasonic spray dryer system to produce spherical microparticles. This equipment was successfully applied to the preparation of dextrin microspheres on a laboratory scale and for academic purposes.

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