title: Development of nitrocellulose membrane filters impregnated with different biosynthesized silver nanoparticles applied to water purification.
abstract: Bactericidal water filters were developed. For this purpose, nitrocellulose membrane filters were impregnated with different biosynthesized silver nanoparticles. Silver nanoparticles (AgNPs) from Aspergillus niger (AgNPs-Asp), Cryptococcus laurentii (AgNPs-Cry) and Rhodotorula glutinis (AgNPs-Rho) were used for impregnating nitrocellulose filters. The bactericidal properties of these nanoparticles against Escherichia coli, Enterococcus faecalis and Pseudomona aeruginosa were successfully demonstrated. The higher antimicrobial effect was observed for AgNPs-Rho. This fact would be related not only to the smallest particles, but also to polysaccharides groups that surrounding these particles. Moreover, in this study, complete inhibition of bacterial growth was observed on nitrocellulose membrane filters impregnated with 1 mg L(-1) of biosynthesized AgNPs. This concentration was able to reduce the bacteria colony count by over 5 orders of magnitude, doing suitable for a water purification device.
authors.affiliation: INQUISAL, Departamento de Química, Universidad Nacional de San Luis, CONICET, Chacabuco 917, D5700BWS, San Luis, Argentina.
authors.forename: Jorge G
authors.initials: JG
authors.lastname: Fernández
authors.affiliation: INQUISAL, Departamento de Química, Universidad Nacional de San Luis, CONICET, Chacabuco 917, D5700BWS, San Luis, Argentina.
authors.forename: César A
authors.initials: CA
authors.lastname: Almeida
authors.affiliation: INQUISAL, Departamento de Química, Universidad Nacional de San Luis, CONICET, Chacabuco 917, D5700BWS, San Luis, Argentina.
authors.forename: Martín A
authors.initials: MA
authors.lastname: Fernández-Baldo
authors.affiliation: INQUISAL, Departamento de Química, Universidad Nacional de San Luis, CONICET, Chacabuco 917, D5700BWS, San Luis, Argentina.
authors.forename: Emiliano
authors.initials: E
authors.lastname: Felici
authors.affiliation: INQUISAL, Departamento de Química, Universidad Nacional de San Luis, CONICET, Chacabuco 917, D5700BWS, San Luis, Argentina.
authors.forename: Julio
authors.initials: J
authors.lastname: Raba
authors.affiliation: INQUISAL, Departamento de Química, Universidad Nacional de San Luis, CONICET, Chacabuco 917, D5700BWS, San Luis, Argentina. Electronic address: msanz@unsl.edu.ar.
authors.forename: María I
authors.initials: MI
authors.lastname: Sanz
mesh_terms: D000900:Anti-Bacterial Agents / Q000096:biosynthesis / Q000737:chemistry* / Q000494:pharmacology; D003101:Collodion / Q000737:chemistry*; D060766:Drinking Water / Q000737:chemistry; D004355:Drug Stability; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry*; D003904:Mitosporic Fungi / Q000378:metabolism; D016062:Porosity; D012834:Silver / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D018508:Water Purification / Q000379:methods*
chemical_list: D000900:Anti-Bacterial Agents; D060766:Drinking Water; D008567:Membranes, Artificial; D012834:Silver; D003101:Collodion
keywords: Bactericidal filters; Nitrocellulose membrane filter; Silver nanoparticles; Water purification