Biofilm formation on polystyrene and glass surface by Aeromonas species isolated from different sources
2017
Ormanci, Seral | Yucel, Nihal
Biofilm forming bacteria can be the major sources of food contamination which can lead to potential foodborne disease. This study, a total of 58 Aeromonas strains isolated from food and sediment samples were investigated for their biofilm‐forming ability in different mediums (TSA/TSB and BHIA/BHIB) and on different surfaces (polystyrene and glass). The biofilm development was determined by using microtiter plate and tube test method. While A. veroni biovar sobria strains produced strong biofilm (87.1–59.3%) by microtiter plate and tube test, respectively, and it is interesting to note moderate to high degree of adherence of A. hydrophila by microtiter plate and tube test (56.5–65.2%), respectively. In addition to this A. caviae strains showed only weak biofilm forming on glasses surface while there was no biofilm forming on polystyrene surface. The agar medium was more effective than broth medium in promoting biofilm production by the tested Aeromonas strains. PRACTICAL APPLICATIONS: In food industry, biofilms are a potential source of product contamination and may lead to food spoilage and serious fouling problems in equipment and biofilm forming bacteria can lead to potential foodborne disease. Aeromonas‐associated cases of gastroenteritis are generally considered food and waterborne. Many Aeromonas strains are capable of adhering and forming biofilm on certain surfaces. Therefore, it might be useful information to understand the biofilm forming capacity of Aeromonas spp. and to compare the biofilm formation of Aeromonas strains with different surfaces and mediums.
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