Antibacterial activity of shrimp chitosan against Escherichia coli, Salmonella, and Pseudomonas aeruginosa isolated from seafoods

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dc.contributor.authorKumar, R.
dc.contributor.authorSurendran, P.K.
dc.contributor.authorThankappan, T.K.
dc.date.accessioned2013-08-01T08:34:39Z
dc.date.available2013-08-01T08:34:39Z
dc.date.issued2006
dc.description.abstractAntibacterial activity of shrimp shell based chitosan was determined against three food borne pathogens viz., Escherichia coli, Salmonella, and Pseudomonas aeruginosa isolated from seafoods. Tests were carried out in phosphate buffered saline (PBS) at pH 6.0. Four different concentrations, 0.01%, 0.03%, 0.05% and 0.1% (w/v) of chitosan were used against E.coli and Salmonella, and 0.01%, 0.05%, 0.5% and 1% were against P.aeruginosa. Chitosan showed stronger bactericidal activity against Salmonella compared to E.coli and P.aeruginosa as evidenced by 3 log cfu.ml super(-1) reduction in Salmonella count with 0.01% chitosan concentration. There was complete elimination of 5 log cfu.ml super(-1) cell count of Salmonella within 24 h at 0.1% chitosan level. There was 3 log reduction in E.coli count at 0.01% chitosan, but not completely inhibited even at the maximum used concentration (0.1%). The inhibition concentration against P.aeruginosa was higher level compared to Enterobacteriaceae and it was found that reduction in 5 log cfu.ml super(-1) was achieved only at 72 h of chitosan exposure. Different chitosan concentrations 0.05%, 0.1% and 1% had almost same inhibition pattern for P.aeruginosa at 6h. 18h 36h and 72h of exposure. The effectiveness of chitosan against tested pathogens showed Salmonella was most susceptible towards chitosan followed by E.coli and P.aeruginosa.en_US
dc.identifier.citationFishery Technology 2006:43(1), 79-84en_US
dc.identifier.urihttp://hdl.handle.net/123456789/352
dc.language.isoenen_US
dc.publisherSociety of Fisheries Technologists(India), Cochinen_US
dc.subjectantibacterial activityen_US
dc.subjectchitosanen_US
dc.subjectshrimpen_US
dc.subjectsalmonellaen_US
dc.subjectE.colien_US
dc.subjectseafoodsen_US
dc.titleAntibacterial activity of shrimp chitosan against Escherichia coli, Salmonella, and Pseudomonas aeruginosa isolated from seafoodsen_US
dc.typeArticleen_US
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