Carboxylate Functional Groups Mediate Interaction with Silver Nanoparticles in Biofilm Matrix.

ABSTRACT: Biofilms causing medical conditions or interfering with technical applications can prove undesirably resistant to silver nanoparticle (AgNP)-based antimicrobial treatment, whereas beneficial biofilms may be adversely affected by the released silver nanoparticles. Isolated biofilm matrices can induce reduction of silver ions and stabilization of the formed nanosilver, thus altering the exposure conditions. We thus study the reduction of silver nitrate solution in model experiments under chemically defined conditions as well as in stream biofilms. Formed silver nanoparticles are characterized by state-of-the art methods. We find that isolated biopolymer fractions of biofilm organic matrix are capable of reducing ionic Ag, whereas other isolated fractions are not, meaning that biopolymer frac

SUBMITTER: Sambalova O 

PROVIDER: S-EPMC6044607 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature