Detection of Salmonella Biofilm Formation by Crystal Violet Microtiter Plate Assay
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Abstract
Salmonella is an important foodborne pathogen. One factor that affects disease severity is the ability of the organism to form biofilm. Since biofilms can cause antibiotic resistance and make it harder for the immune system to destroy biofilm-forming organisms. This study determined to detect biofilm formation of 100 Salmonella isolated from 50 raw chicken meat samples from 10 fresh markets in Thonburi, Bangkok. Detecting and diagnosing Salmonella in raw chicken meat by standard methods with biochemical test and serological test, and detecting biofilm formation by crystal violet microtiter plate assay. Data were analyzed using descriptive statistics. The study found that 100 Salmonella isolates from raw chicken meat were found to be Salmonella Serogroup A 11%, Serogroup B 23%, Serogroup C 41%, Serogroup D 6%, Serogroup E 19%, and 83 isolates (83%) were found to be able to form biofilm. With strong biofilm producers, moderate biofilm producers, and weak biofilm producers of 24%, 33%, and 26%, respectively. It was found that all isolates of Salmonella Serogroup D formed biofilm. The high prevalence of biofilm formation in the bacteria means that consumers may be at risk if they are infected, and may cause problems in treatment because the bacteria may be resistant to antibiotics used.
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Journal of Safety and Health is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence, unless otherwise stated.
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