title: Adhesion of nano-sized particles to the surface of bacteria: mechanistic study with the extended DLVO theory.
abstract: Due to the increasing production and application of nanoparticles, their release into the environment would be inevitable, which requires a better understanding of their fate in the environment. When considering their toxic behavior or biodegradation as their fate, their adhesion to the cell surface must be the first step to be thoroughly studied. In this study, nano-sized polymeric particles of urethane acrylate with various hydrophobicity and ionic properties were synthesized as model nanoparticles, and their adhesion to Pseudomonas putida strains was monitored. The higher hydrophobicity and positive charge density on the particle surface exhibited the larger adhesion to the bacteria, whereas negative charge density on the particle hindered their adhesion to the bacteria, albeit high hydrophobicity of particle. These observations were successfully explained with the extended Derjaguin-Landau-Verwey-Overbeek (DLVO) theory.
authors.affiliation: Department of Chemical Engineering, Yonsei University, Seoul, South Korea.
authors.forename: Geelsu
authors.initials: G
authors.lastname: Hwang
authors.forename: Ik-Sung
authors.initials: IS
authors.lastname: Ahn
authors.forename: Byung Jin
authors.initials: BJ
authors.lastname: Mhin
authors.forename: Ju-Young
authors.initials: JY
authors.lastname: Kim
mesh_terms: D001419:Bacteria; D001422:Bacterial Adhesion; D057927:Hydrophobic and Hydrophilic Interactions; D053758:Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D016958:Pseudomonas putida / Q000502:physiology; D013499:Surface Properties
chemical_list: D011108:Polymers