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Characterization of lactococci isolated from homemade kefir

dc.creatorKojić, Milan
dc.creatorLozo, Jelena
dc.creatorBegović, Jelena
dc.creatorJovčić, Branko
dc.creatorTopisirović, Ljubiša
dc.date.accessioned2023-10-16T12:38:12Z
dc.date.available2023-10-16T12:38:12Z
dc.date.issued2007
dc.identifier.issn0354-4664
dc.identifier.urihttp://intor.torlakinstitut.com/handle/123456789/812
dc.description.abstractPet izolata laktokoka proizvođača bakteriocina izolovanih iz kefira pripremljenog na tradicionalan način determinisano je kao Lactococcus lactis subsp. lactis. Analizirani izolati poseduju različite plazmidne profile i među njima nije detektovana uzajamna antimikrobna aktivnost. Takođe prirodni izolat BGKF26 je rezistentan na aktivnost soja NP45, proizvođača nizina. Eksperimenti čišćenja plazmida pokazali su da se geni _a sintezu bakteriocina i proteinaza nalaze na različitim genetičkim elementima, osim kod izolata BGKF26. Sinteza analiziranih bakteriocina zavisi od koncentracije kazitona ili triptona u medijumu. Više koncentracije kazitona ili triptona indukuju bakteriocinsku aktivnost. Hibridizacioni eksperimenti su pokazali da su analizirani bakteriocini najverovatnije slični laktokokcinima.sr
dc.description.abstractFive bacteriocin-producing lactococci isolates from traditionally prepared kefir were determined as Lactococcus lactis subsp. lactis. The analyzed isolates showed different plasmid profiles and no cross inhibition between them was detected. Moreover, natural isolate BGKF26 was resistant to the antimicrobial activity of nisin producing strain NP45. Plasmid curing experiments revealed that the genes encoding bacteriocin and proteinase production are located on separate genetic elements, except in BGKF26. Production of the tested bacteriocins depends on the concentration of casitone or triptone in the medium. Higher concentrations of casitone or triptone induce bacteriocin activity. Our DNA-DNA hybridization analyses suggest that the analyzed antimicrobial compounds probably are lactococcin-like bacteriocins.en
dc.publisherSrpsko biološko društvo, Beograd, i dr.
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/143036/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceArchives of Biological Sciences
dc.subjectproteinaseen
dc.subjectlactococcien
dc.subjectkefiren
dc.subjectbacteriocinen
dc.titleKarakterizacija laktokoka izolovanih iz kefira pripremljenog u domaćinstvusr
dc.titleCharacterization of lactococci isolated from homemade kefiren
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage22
dc.citation.issue1
dc.citation.other59(1): 13-22
dc.citation.spage13
dc.citation.volume59
dc.identifier.doi10.2298/ABS0701013K
dc.identifier.fulltexthttp://intor.torlakinstitut.com/bitstream/id/1891/Characterization_of_lactococci_VoR_2007.pdf
dc.identifier.wos000254726100002
dc.type.versionpublishedVersion


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