Microbiological contamination of water-based paints from an industry in the state of Paraná, Brazil.

Microbiological contamination of water-based paints from an industry in the state of Paraná, Brazil.

Authors

  • Fernanda Rochoel La Rosa Universidade Estadual de Londrina
  • Ellen Cristine Giese Universidade Estadual Paulista
  • Robert Frans Huibert Dekker Universidade Estadual de Londrina
  • Jacinta Sánchez Pelayo Universidade Estadual de Londrina
  • Aneli de Melo Barbosa Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0375.2008v29n1p85

Keywords:

Paint, Microbial contaminants, Bactericides, Fungicides, Stenotrophomonas maltophilia.

Abstract

A paint company in the state of Paraná in Brazil had several batches of water-based acrylic paints contaminated with microorganisms. Three fungi and one bacterium were isolated. The bacterium was identifed as Stenotrophomonas maltophilia. Three commercial fungicides (Fungicide I, II and III) and three bactericides (Bactericide I, II and III) were evaluated in attempts to prevent microbial growth. Fungicide II (1 g/L) was the most effcient fungicide of fungal isolates A and B, while Fungicide I was a better inhibitor of isolate C at the lowest concentrations studied. Bactericide II and III inhibited bacterial isolate at a concentration of 1 g/L, while 2 g/L of Bactericide I did not inhibited its growth. Inhibition tests were standardized and used to quantitatively evaluate the bactericides demonstrating that Bactericide III (2 g/L) inhibited 80 % of bacterial isolate.

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Author Biographies

Fernanda Rochoel La Rosa, Universidade Estadual de Londrina

Especialista em Bioquímica Aplicada, Universidade Estadual de Londrina, DBBTEc.

Ellen Cristine Giese, Universidade Estadual Paulista

Doutora em Engenharia e Ciências de Alimentos, Universidade Estadual Paulista, DQCA, S. J. Rio Preto-SP.

Robert Frans Huibert Dekker, Universidade Estadual de Londrina

Professor Visitante, Universidade Estadual de Londrina, Departamento de Bioquímica - DBBTEc.

Jacinta Sánchez Pelayo, Universidade Estadual de Londrina

Professor Adjunto D, Universidade Estadual de Londrina, DM.

Aneli de Melo Barbosa, Universidade Estadual de Londrina

Professora Associado C, Universidade Estadual de Londrina, DBBTEc.

Published

2008-07-15

How to Cite

Rosa, F. R. L., Giese, E. C., Dekker, R. F. H., Pelayo, J. S., & Barbosa, A. de M. (2008). Microbiological contamination of water-based paints from an industry in the state of Paraná, Brazil. Semina: Ciências Exatas E Tecnológicas, 29(1), 85–92. https://doi.org/10.5433/1679-0375.2008v29n1p85

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Original Article

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