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master's thesis
Prevlast bakterije mliječne kiseline Lactobacillus brevis L62 nad Escherichia coli StrR u mješovitoj bakterijskoj kulturi
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2017. urn:nbn:hr:159:418502
Kikelj, Ivana
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Biochemical Engineering
Laboratory for Biology and Microbial Genetics

Institutional repository: Repository of the Faculty of Food Technology and Biotechnology

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Kikelj, I. (2017). Prevlast bakterije mliječne kiseline Lactobacillus brevis L62 nad Escherichia coli StrR u mješovitoj bakterijskoj kulturi (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:418502

Kikelj, Ivana. "Prevlast bakterije mliječne kiseline Lactobacillus brevis L62 nad Escherichia coli StrR u mješovitoj bakterijskoj kulturi." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2017. https://urn.nsk.hr/urn:nbn:hr:159:418502

Kikelj, Ivana. "Prevlast bakterije mliječne kiseline Lactobacillus brevis L62 nad Escherichia coli StrR u mješovitoj bakterijskoj kulturi." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2017. https://urn.nsk.hr/urn:nbn:hr:159:418502

Kikelj, I. (2017). 'Prevlast bakterije mliječne kiseline Lactobacillus brevis L62 nad Escherichia coli StrR u mješovitoj bakterijskoj kulturi', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 05 January 2025, https://urn.nsk.hr/urn:nbn:hr:159:418502

Kikelj I. Prevlast bakterije mliječne kiseline Lactobacillus brevis L62 nad Escherichia coli StrR u mješovitoj bakterijskoj kulturi [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2017 [cited 2025 January 05] Available at: https://urn.nsk.hr/urn:nbn:hr:159:418502

I. Kikelj, "Prevlast bakterije mliječne kiseline Lactobacillus brevis L62 nad Escherichia coli StrR u mješovitoj bakterijskoj kulturi", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:159:418502

Metadata
TitlePrevlast bakterije mliječne kiseline Lactobacillus brevis L62 nad Escherichia coli StrR u mješovitoj bakterijskoj kulturi
Title (english)Predominance of lactic acid bacteria Lactobacillus brevis L62 over Escherichia coli StrR in mixed culture
AuthorIvana Kikelj
MentorVišnja Bačun-Družina (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Biochemical Engineering)
(Laboratory for Biology and Microbial Genetics)
Zagreb
Defense date and country2017-09-28, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
Bakterije su u svom prirodnom okolišu neprestano izložene različitim uvjetima stresa i suživotu s drugim mikroorganizmima. Navedeni uvjeti vrlo su slični uvjetima stacionarne faze tijekom uzgoja u laboratoriju. U ovom radu istražen je konkurentski rast stanica patogene enterobakterije Escherichia coli (1 i 10 dana stara) koja je rezistentna na djelovanje antibiotika streptomicina i stanica bakterijske kulture Lactobacillus brevis L62 (1 dan stara) koja nosi prirodnu rezistenciju na nalidiksinsku kiselinu. Navedene bakterijske kulture pomiješane su u omjeru 1:10 i 1:100, nakon čega je praćen njihov rast tijekom produljene stacionarne faze rasta. Dinamika rasta navedenih bakterijskih kultura proučavana je šaržnim uzgojem u minimalnoj podlozi, na temperaturi od 37 °C. Mlada bakterijska kultura L. brevis L62 rastom je suzbila patogenu bakterijsku kulturu E. coli StrR. Time se pokazala pogodnim konkurentnim sojem za njeno uklanjanje.
Abstract (english)
Bacteria in their natural environments live under different stress conditions and cohabitation with other microorganisms. Those conditions are very similar to stationary growth phase conditions during laboratory cultivation. In this paper is about to study of the competitive growth of the pathogenic enterobacteria Escherichia coli (1 and 10 days old) that is resistant to antibiotic streptomycin and the bacterial culture Lactobacillus brevis L62 (1 day old) that carries a natural resistance to nalidixic acid. Mentioned bacterial cultures were mixed in 1:10 and 1:100 ratio and observed during prolonged stationary phase of growth. Growth dynamics of those bacterial batch cultures was studied in minimal medium at temperature of 37 °C. The young bacterial culture L. brevis L62 supressed growth of patogenic E. coli StrR. This makes L. brevis suitable choice to eradicate E. coli StrR.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:418502
Study programmeTitle: Molecular Biotechnology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka molekularne biotehnologije (magistar/magistra inženjer/inženjerka molekularne biotehnologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-11-07 10:15:40