title: Enhanced antibacterial activity of TiO2nanoparticle surface modified withGarcinia zeylanicaextract.
abstract: BACKGROUND
  The antibacterial activity of 21 nm TiO2nanoparticles (NPs) and particles modified withGarcinia zeylanica(G. zeylanica) against Methicillin resistantStaphylococcus aureuswas investigated in the presence and absence of light.
  
  
  RESULTS
  Surface modification of TiO2NPs with the adsorption ofG. zeylanicaextract, causes to shift the absorption edge of TiO2NPs to higher wavelength. TiO2NPs,G. zeylanicapericarp extract showed significant bactericidal activity which was further enhanced in contact with the TiO2modifiedG. zeylanicaextract.
  
  
  CONCLUSIONS
  The antimicrobial activity was enhanced in the presence of TiO2NPs modified withG. zeylanicaand with longer contact time.
authors.affiliation: Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, Colombo, Sri Lanka.
authors.forename: U L N H
authors.initials: UL
authors.lastname: Senarathna
authors.affiliation: Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, Colombo, Sri Lanka.
authors.forename: S S N
authors.initials: SS
authors.lastname: Fernando
authors.affiliation: Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, Colombo, Sri Lanka.
authors.forename: T D C P
authors.initials: TD
authors.lastname: Gunasekara
authors.affiliation: Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, Colombo, Sri Lanka.
authors.forename: M M
authors.initials: MM
authors.lastname: Weerasekera
authors.affiliation: Department of Nidana Chikitsa, Institute of Indigenous Medicine, University of Colombo, Colombo, Sri Lanka.
authors.forename: H G S P
authors.initials: HG
authors.lastname: Hewageegana
authors.affiliation: Department of Chemistry, University of Sri Jayewardenepura, Colombo, Sri Lanka.
authors.forename: N D H
authors.initials: ND
authors.lastname: Arachchi
authors.affiliation: Department of Optoelectronics and Nanostructure Science, Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Japan.
authors.forename: H D
authors.initials: HD
authors.lastname: Siriwardena
authors.affiliation: Department of Chemistry, University of Sri Jayewardenepura, Colombo, Sri Lanka.
authors.forename: P M
authors.initials: PM
authors.lastname: Jayaweera
keywords: Antibacterial; Garcinia; Methicillin-resistant Staphylococcus aureus; Titanium dioxide