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Karakterizacija i antimikrobna aktivnost prirodnog izolata Lactococcus lactis subsp. lactis BGSM1-19
Characterization and antimicrobial activity of natural isolate Lactococcus lactis subsp. lactis BGSM1-19
dc.creator | Strahinić, Ivana | |
dc.creator | Cvetanović, D. | |
dc.creator | Kojić, Milan | |
dc.creator | Fira, Đorđe | |
dc.creator | Tolinački, Maja | |
dc.creator | Topisirović, Ljubiša | |
dc.date.accessioned | 2022-11-15T13:46:23Z | |
dc.date.available | 2022-11-15T13:46:23Z | |
dc.date.issued | 2007 | |
dc.identifier.issn | 0567-8315 | |
dc.identifier.uri | https://imagine.imgge.bg.ac.rs/handle/123456789/280 | |
dc.description.abstract | Soj Lactococcus lactis subsp. lactis BGSM1-19, izolovan iz sira tradicionalno proizvedenog u domaćinstvu, sintetiše dva bakteriocina: bakteriocin BacSMa koji pripada grupi laktokokcina B i bakteriocin BacSMb koji pokazuje visoku homologiju sa lakticinom RM. Čišćenjem plazmida, sa relativno niskim prinosom (0,33%), dobijene su dve grupe derivata: BacSMa- BacSMas derivat i BacSMa- BacSMas, BacSMb-, BacSMbs.. Sinteza bakteriocina je ispitivana tokom logaritamske faze rasta pri čemu je utvrđen maksimum proizvodnje u kulturi staroj 8 sati gajenoj na temperaturi od 30oC, što odgovara ranoj stacionarnoj fazi rasta. Biohemijska karakterizacija je ukazala da soj BGSM1-19 zadržava antimikrobnu aktivnost u opsegu pH vrednosti od 1 do 12 kao i posle tretmana na 100 oC u trajanju od 15 minuta. Utvrđeno je da se antimikrobna aktivnost potpuno gubi nakon tretmana različitim proteolitičkim enzimima. Soj BGSM1-19 poseduje pet plazmida. U eksperimentima čišćenja od plazmida utvrđeno je da se geni za sintezu i imunost na bakteriocine nalaze na plazmidima. Pored toga, BGSM1-19 pokazuje antimikrobnu aktivnost na ispitivane patogene bakterije kao što su Salmonella paratyphi, Micrococcus flavus, Pseudomonas aeruginosa i Staphylococcus aureus. | sr |
dc.description.abstract | The strain Lactococcus lactis subsp. lactis BGSM1-19, isolated from traditionally homemade white cheese, produces two bacteriocins: lactococcin B-like bacteriocin named bacteriocin BacSMa and bacteriocin BacSMb which have shown similarity with lacticin RM. Plasmid curing resulted in a low yield (0.33%) of BacSMa- BacSMas and BacSMa- BacSMas, BacSMb-, BacSMbs derivatives. The bacteriocin biosynthesis was observed in the logarithmic phase of growth and the production plateau was reached after 8 h of incubation at 30oC, when the culture entered the early stationary phase. Biochemical characterization showed that strain BGSM1-19 retained antimicrobial activity within the pH range of 1 to 12 or after treatment at 100oC for 15 min. However, bacteriocin activity was completely lost after treatment with different proteolytic enzymes. The strain BGSM1-19 contains five plasmids. Plasmid curing indicated that genes coding for bacteriocins synthesis and immunity seem to be located on plasmids. BGSM1-19 exhibited antimicrobial activity against some pathogenic bacteria such as Salmonella paratyphi, Micrococcus flavus, Pseudomonas aeruginosa and Staphylococcus aureus. | en |
dc.publisher | Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/143036/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Acta Veterinaria-Beograd | |
dc.subject | Staphylococcus aureus | en |
dc.subject | Micrococcus flavus | en |
dc.subject | Lactococcus | en |
dc.subject | bacteriocin | en |
dc.subject | antimicrobial activity | en |
dc.title | Karakterizacija i antimikrobna aktivnost prirodnog izolata Lactococcus lactis subsp. lactis BGSM1-19 | sr |
dc.title | Characterization and antimicrobial activity of natural isolate Lactococcus lactis subsp. lactis BGSM1-19 | en |
dc.type | article | |
dc.rights.license | BY | |
dc.citation.epage | 521 | |
dc.citation.issue | 5-6 | |
dc.citation.other | 57(5-6): 509-521 | |
dc.citation.rank | M23 | |
dc.citation.spage | 509 | |
dc.citation.volume | 57 | |
dc.identifier.doi | 10.2298/AVB0706509S | |
dc.identifier.fulltext | https://imagine.imgge.bg.ac.rs/bitstream/id/252/277.pdf | |
dc.identifier.scopus | 2-s2.0-38549104037 | |
dc.identifier.wos | 000251981100012 | |
dc.type.version | publishedVersion |