Akademska digitalna zbirka SLovenije - logo
E-viri
Celotno besedilo
Recenzirano
  • Gelatin microparticles cont...
    Bruschi, M.L; Cardoso, M.L.C; Lucchesi, M.B; Gremião, M.P.D

    International journal of pharmaceutics, 10/2003, Letnik: 264, Številka: 1
    Journal Article

    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 μm without mannitol and 2.50 μm 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.