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dc.contributor.authorMengíbar, M.-
dc.contributor.authorGañan, M.-
dc.contributor.authorMiralles, B.-
dc.contributor.authorCarrascosa, Alfonso V.-
dc.contributor.authorMartínez-Rodríguez, Adolfo J.-
dc.identifierdoi: 10.1016/j.carbpol.2010.04.042-
dc.identifierissn: 0144-8617-
dc.identifier.citationCarbohydrate Polymers 84(2): 844-848 (2011)-
dc.descriptionet al.-
dc.description.abstractChitosan has several biological properties useful for the food industry, but the most attractive is its potential use as a food preservative of natural origin due to its antimicrobial activityagainst a wide range of food-borne microorganisms. Among food-borne pathogens, Campylobacterjejuni and related species are recognised as the most common causes of bacterial food-borne diarrhoeal disease throughout the world. Recently, it has been demonstrated that campylobacters are highly sensitive to chitosan. Even though chitosan is known to have important functional activities, poor solubility makes them difficult to use in food and biomedical applications. Unlike chitosan, the low viscosity and good solubility of chitosan oligosaccharides (COS) make them especially attractive in an important number of useful applications. In the present work, the effect of different COS on C. jejuni was investigated. Variables such as the physicochemical characteristics of chitosan and the enzyme used in COS preparation were studied. The COS had been fractioned using ultrafiltration membranes and each fraction was characterized regarding its FA and molecular weight distribution. It has been demonstrated that the biological properties of COS on Campylobacter depend on the composition of the fraction analysed. COS prepared by enzymatic hydrolysis with chitosanase were more active againstCampylobacter that lysozyme-derived COS, and this behaviour seems to be related with the acetylation of the chains. On the other hand, the 10–30 kDa fraction was the most active COS fraction, independently of the enzyme used for the hydrolysis. These results have shown that COS could be useful as antimicrobial in the control of C. jejuni.-
dc.description.sponsorshipThis work was partially funded through Projects MAT2007- 63753 of the Spanish Ministry of Education and CCG07-CSIC/AGR- 2255 and AGL2009-07894 of the CSIC. BM thanks the Deutscher Akademischer Austauschdienst (DAAD) for a research scholarship at the University of Potsdam.-
dc.titleAntibacterial activity of products of depolymerization of chitosans with lysozyme and chitosanase against Campylobacter jejuni-
dc.description.versionPeer Reviewed-
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