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Biofilm formation by Staphylococcus aureus and Salmonella spp. under mono and dual-species conditions and their sensitivity to cetrimonium bromide, peracetic acid and sodium hypochlorite
Iñiguez-Moreno, Maricarmen; Gutiérrez-Lomelí, Melesio; Guerrero-Medina, Pedro Javier; Avila-Novoa, María Guadalupe.
  • Iñiguez-Moreno, Maricarmen; Universidad de Guadalajara. Centro Universitario de la Ciénega. Departamento de Ciencias Médicas y de la Vida. Ocotlán. MX
  • Gutiérrez-Lomelí, Melesio; Universidad de Guadalajara. Centro Universitario de la Ciénega. Departamento de Ciencias Médicas y de la Vida. Ocotlán. MX
  • Guerrero-Medina, Pedro Javier; Universidad de Guadalajara. Centro Universitario de la Ciénega. Departamento de Ciencias Médicas y de la Vida. Ocotlán. MX
  • Avila-Novoa, María Guadalupe; Universidad de Guadalajara. Centro Universitario de la Ciénega. Departamento de Ciencias Médicas y de la Vida. Ocotlán. MX
Braz. j. microbiol ; 49(2): 310-319, Apr.-June 2018. tab, graf
Article in English | LILACS | ID: biblio-889225
ABSTRACT
Abstract The aim of this study was evaluated the biofilm formation by Staphylococcus aureus 4E and Salmonella spp. under mono and dual-species biofilms, onto stainless steel 316 (SS) and polypropylene B (PP), and their sensitivity to cetrimonium bromide, peracetic acid and sodium hypochlorite. The biofilms were developed by immersion of the surfaces in TSB by 10 d at 37 °C. The results showed that in monospecies biofilms the type of surface not affected the cellular density (p > 0.05). However, in dual-species biofilms on PP the adhesion of Salmonella spp. was favored, 7.61 ± 0.13 Log10 CFU/cm2, compared with monospecies biofilms onto the same surface, 5.91 ± 0.44 Log10 CFU/cm2 (p < 0.05). The mono and dual-species biofilms were subjected to disinfection treatments; and the most effective disinfectant was peracetic acid (3500 ppm), reducing by more than 5 Log10 CFU/cm2, while the least effective was cetrimonium bromide. In addition, S. aureus 4E and Salmonella spp. were more resistant to the disinfectants in mono than in dual-species biofilms (p < 0.05). Therefore, the interspecies interactions between S. aureus 4E and Salmonella spp. had a negative effect on the antimicrobial resistance of each microorganism, compared with the monospecies biofilms.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Peracetic Acid / Salmonella / Sodium Hypochlorite / Staphylococcus aureus / Cetrimonium Compounds / Biofilms / Disinfectants Type of study: Diagnostic study Language: English Journal: Braz. j. microbiol Journal subject: Microbiology Year: 2018 Type: Article Affiliation country: Mexico Institution/Affiliation country: Universidad de Guadalajara/MX

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Full text: Available Index: LILACS (Americas) Main subject: Peracetic Acid / Salmonella / Sodium Hypochlorite / Staphylococcus aureus / Cetrimonium Compounds / Biofilms / Disinfectants Type of study: Diagnostic study Language: English Journal: Braz. j. microbiol Journal subject: Microbiology Year: 2018 Type: Article Affiliation country: Mexico Institution/Affiliation country: Universidad de Guadalajara/MX