Evaluation of commercial probiotic lactic cultures against biofilm formation by Cronobacter sakazakii

Anubhav Jamwal; Kavita Sharma; Rajni Chauhan; Saurabh Bansal; Gunjan Goel

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자료유형: 학술저널

저자정보: Anubhav Jamwal (Jaypee University of Information Technology) Kavita Sharma (Jaypee University of Information Technology) Rajni Chauhan (Jaypee University of Information Technology) Saurabh Bansal (Jaypee University of Information Technology) Gunjan Goel (Jaypee University of Information Technology)

저널정보: 대한장연구학회 Intestinal research Intestinal research Vol.17 No.2

발행연도: 2019.1

수록면: 192 - 201 (10page)

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Background/Aims: Cronobacter sakazakii, an emergent pathogen is considered as a major concern to infants and neonates fed on reconstituted powdered infant milk formula. In conjunction with many other factors, biofilm forming capacity adds to its pathogenic potential. In view of the facts that infants are at highest risk to C. sakazakii infections, and emerging antibiotic resistance among pathogens, it is imperative to evaluate probiotic cultures for their efficacy against C. sakazakii. Therefore, pure probiotic strains were isolated from commercial probiotic products and tested for their antimicrobial and anti-biofilm activities against C. sakazakii. Methods: A total of 6 probiotic strains were tested for their antibiotic susceptibility followed by antimicrobial activity using cell-free supernatant (CFS) against C. sakazakii. The inhibitory activity of CFS against biofilm formation by C. sakazakii was determined using standard crystal violet assay and microscopic observations. Results: All the probiotic strains were sensitive to ampicillin, tetracycline, vancomycin and carbenicillin whereas most of the strains were resistant to erythromycin and novobiocin. Four of the 6 probiotic derived CFS possessed antimicrobial activity against C. sakazakii at a level of 40 μL. A higher biofilm inhibitory activity (>80%) was observed at initial stages of biofilm formation with weaker activity during longer incubation upto 48 hours (50%–60%). Conclusions: The study indicated the efficacy of isolated commercial probiotics strains as potential inhibitor of biofilm formation by C. sakazakii and could be further explored for novel bioactive molecules to limit the emerging infections of C. sakazakii. (Intest Res 2019;17:192-201)

#Probiotics #Cronobacter sakazakii #Biofilm #Antimicrobial

참고문헌 (39)

참고문헌 신청

Kumar N / 2018 / Nutrients in dairy and their implications on health and disease / Academic Press :123~135

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Beuchat LR / 2009 / Cronobacter sakazakii in foods and factors affecting its survival, growth, and inactivation / Int J Food Microbiol 136:204~213

Bowen AB / 2006 / Invasive Enterobacter sakazakii disease in infants / Emerg Infect Dis 12:1185~1189

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