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undergraduate thesis
Bioaktivno djelovanje autohtonih sojeva bakterija mliječne kiseline izoliranih iz kiselog kupusa
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2024. urn:nbn:hr:159:275016
Sever, Nika
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Biochemical Engineering
Laboratory for Antibiotic, Enzyme, Probiotic and Starter Cultures Technology

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

Cite this document

Sever, N. (2024). Bioaktivno djelovanje autohtonih sojeva bakterija mliječne kiseline izoliranih iz kiselog kupusa (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:275016

Sever, Nika. "Bioaktivno djelovanje autohtonih sojeva bakterija mliječne kiseline izoliranih iz kiselog kupusa." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2024. https://urn.nsk.hr/urn:nbn:hr:159:275016

Sever, Nika. "Bioaktivno djelovanje autohtonih sojeva bakterija mliječne kiseline izoliranih iz kiselog kupusa." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2024. https://urn.nsk.hr/urn:nbn:hr:159:275016

Sever, N. (2024). 'Bioaktivno djelovanje autohtonih sojeva bakterija mliječne kiseline izoliranih iz kiselog kupusa', Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 16 January 2025, https://urn.nsk.hr/urn:nbn:hr:159:275016

Sever N. Bioaktivno djelovanje autohtonih sojeva bakterija mliječne kiseline izoliranih iz kiselog kupusa [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2024 [cited 2025 January 16] Available at: https://urn.nsk.hr/urn:nbn:hr:159:275016

N. Sever, "Bioaktivno djelovanje autohtonih sojeva bakterija mliječne kiseline izoliranih iz kiselog kupusa", Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:159:275016

Metadata
TitleBioaktivno djelovanje autohtonih sojeva bakterija mliječne kiseline izoliranih iz kiselog kupusa
Title (english)Bioactive activity of autochthonous lactic acid bacteria strains isolated from sauerkraut
AuthorNika Sever
MentorKatarina Butorac (mentor)
MentorMartina Banić (pomoć pri izradi, neposredni voditelj)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Biochemical Engineering)
(Laboratory for Antibiotic, Enzyme, Probiotic and Starter Cultures Technology)
Zagreb
Defense date and country2024-07-10, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
Bakterije mliječne kiseline (BMK) su industrijski vrlo važni mikroorganizmi koji se upotrebljavaju kao starter kulture za dobivanje raznih fermentiranih proizvoda. Kao posljedica djelovanja njihovog metabolizma koja ovisi o supstratu i tipu fermentacije mogu sintetizirati metabolite s raznovrsnim bioaktivnim djelovanjem. Cilj ovog rada bio je ispitati potencijalno bioaktivno djelovanje autohtonih sojeva BMK izoliranih iz rasola kiselog kupusa dobivenog spontanom fermentacijom. Potencijal biosinteze makromolekula egzopolisaharida je dokazan kod 33,33 % BMK, dok je najbolje antioksidativno djelovanje dokazano kod dva soja čija je sposobnost uklanjanja DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate) radikala iznosila oko 37 %. Svi izolirani sojevi su pokazali slabu sposobnost hidrolize kazeina. Antimikrobno djelovanje prema srodnim BMK je bilo slabije izraženo nego prema test-mikroorganizmima. Primijenjeni sojevi imaju potencijal za primjenu u prehrambenoj te biotehnološkoj proizvodnji.
Abstract (english)
Lactic acid bacteria (LAB) are industrially very important microorganisms that are used as starter cultures for the production of various fermented products. As a result of their metabolism, which depends on the substrate and the type of fermentation, they can synthesize metabolites with different bioactive effects. The aim of this work was to investigate the potential bioactive effect of autochthonous LAB strains isolated from sauerkraut obtained by spontaneous fermentation. The potential to biosynthesize exopolysaccharide macromolecules was detected in 33.33 % of LAB, while the best antioxidant activity was detected in two strains whose ability to remove DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate) radical was about 37 %. All isolated strains showed a weak ability to hydrolyze casein. The antimicrobial activity against related LAB was less pronounced than against the test-microorganisms. The strains used have potential for application in food and biotechnological industry.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:275016
Study programmeTitle: Biotechnology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) icon
Created on2024-11-11 14:09:16