Gelatin microparticles containing propolis obtained by spray-drying technique: preparation and characterization
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Data
2003-10-02
Autores
Bruschi, M. L.
Cardoso, MLC
Lucchesi, M. B.
Gremiao, MPD
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
Gelatin microparticles containing propolis extractive solution (PES) were prepared by spray-drying technique. The optimization of the spray-drying operating conditions and the proportions of gelatin and mannitol were investigated. Regular particle morphology was obtained when mannitol was used, whereas mannitol absence produced a substantial number of coalesced and agglomerated microparticles. Microparticles had a mean diameter of 2.70 mum without mannitol and 2.50 mum with mannitol. The entrapment efficiency for propolis of the microparticles was upto 41 % without mannitol and 39% with mannitol. The microencapsulation by spray-drying technique maintained the activity of propolis against Staphylococcus aureus. These gelatin microparticles containing propolis would be useful for developing intermediary or eventual propolis dosage form without the PES' strong and unpleasant taste, aromatic odour, and presence of ethanol. (C) 2003 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
propolis, gelatin, spray-drying, microparticle characterization, optimization
Como citar
International Journal of Pharmaceutics. Amsterdam: Elsevier B.V., v. 264, n. 1-2, p. 45-55, 2003.