title: Poly (epsilon-caprolactone)/propolis extract: microencapsulation and antibacterial activity evaluation.
abstract: Spherical and homogenous microparticles of poly(epsilon-caprolactone) (PCL), containing propolis were prepared by the emulsification-solvent evaporation technique. Using this method of preparation, a solid formulation of propolis, free of ethanol and suitable for manipulation and storage, was obtained from an ethanolic extract of propolis. The incorporation efficiency of propolis in the microparticles was almost 30% and around 60% of the substance was released in 48 h. In vitro propolis microparticles exhibited similar halo zones in the Petri plate test against Streptococcus mutans (GS5) with a 10-fold lower concentration than the free propolis extract showing that the encapsulated propolis in microparticles is more efficient as antibiotic.
authors.affiliation: Biological Chemistry Laboratory, Instituto de Química, Universidade Estadual de Campinas, Brazil. duran@iqm.unicamp.br
authors.forename: N
authors.initials: N
authors.lastname: Durán
authors.forename: P D
authors.initials: PD
authors.lastname: Marcato
authors.forename: C M S
authors.initials: CM
authors.lastname: Buffo
authors.forename: M M M
authors.initials: MM
authors.lastname: De Azevedo
authors.forename: E
authors.initials: E
authors.lastname: Esposito
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry* / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects*; D002208:Caproates / Q000737:chemistry* / Q000494:pharmacology*; D002214:Capsules; D002626:Chemistry, Pharmaceutical; D004339:Drug Compounding; D007700:Kinetics; D007783:Lactones / Q000737:chemistry* / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D010316:Particle Size; D011429:Propolis / Q000737:chemistry* / Q000494:pharmacology*; D012995:Solubility; D012997:Solvents; D013295:Streptococcus mutans / Q000187:drug effects; D013501:Surface-Active Agents
chemical_list: D000890:Anti-Infective Agents; D002208:Caproates; D002214:Capsules; D007783:Lactones; D012997:Solvents; D013501:Surface-Active Agents; C121056:caprolactone; D011429:Propolis