Author(s): Anversa, Laís ; Stancari, Regina Célia Arantes ; Garbelotti, Maricene ; Ruiz, Luciana da Silva ; Pereira, Virgínia Bodelão Richini ; Nascentes, Gabriel Antonio Nogueira ; Dantas, Stéfani Thais Alves [UNESP] ; Rall, Vera Lúcia Mores [UNESP]
Date: 2020
Persistent ID: http://hdl.handle.net/11449/199527
Origin: Oasisbr
Subject(s): Biofilm; Pseudomonas aeruginosa; Public health; Water; Water supply
Made available in DSpace on 2020-12-12T01:42:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-09-01
Water is indispensable for life and its quality is directly related to public health. The objective of this study was to investigate the presence of Pseudomonas aeruginosa in public water supply in municipalities in São Paulo State, Brazil. Analyses were carried out at the Adolfo Lutz Institute between February and December 2016, and included physicochemical (chlorine, pH, color, turbidity and nitrate), and microbiological parameters (total coliforms and Escherichia coli), as well as P. aeruginosa, with susceptibility tests to antimicrobial agents and biofilm production capacity by the strains isolated. In total, 251 water samples were evaluated and 19 (7.6%) presented P. aeruginosa. No significant differences were observed between the physicochemical parameters found in the positive and negative samples for this bacterium, but the samples containing total coliforms were also those with the highest positivity for P. aeruginosa. All samples with P. aeruginosa reported chlorine concentrations between 0.2 and 2.0 mg/L, as required by Brazilian legislation, demonstrating this bacterium’s resistance to conventional water treatment processes. Although not resistant to the antimicrobials tested, most strains isolated were classified as strong biofilm producers, emphasizing the need for further studies involving water supply quality.
Instituto Adolfo Lutz Centro de Laboratório Regional de Bauru, Rua Rubens Arruda, Quadra 6, Centro
Instituto Federal de Educação Ciência e Tecnologia do Triângulo Mineiro, Rua João Batista Ribeiro, 4000, Mercês
Departamento de Microbiologia e Imunologia Universidade Estadual Paulista ‘Júlio de Mesquita Filho’ (UNESP) Instituto de Biociências, Caixa Postal 510, Distrito de Rubião Júnior
Departamento de Microbiologia e Imunologia Universidade Estadual Paulista ‘Júlio de Mesquita Filho’ (UNESP) Instituto de Biociências, Caixa Postal 510, Distrito de Rubião Júnior
