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undergraduate thesis
Proizvodnja kefirnog napitka uz dodatak suhih šljiva, grožđica i datulja
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2022. urn:nbn:hr:159:365007
Antunović, Marija
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Biochemical Engineering
Laboratory for Biochemical Engineering, Industrial Microbiology and Malting and Brewing Technology

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

Cite this document

Antunović, M. (2022). Proizvodnja kefirnog napitka uz dodatak suhih šljiva, grožđica i datulja (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:365007

Antunović, Marija. "Proizvodnja kefirnog napitka uz dodatak suhih šljiva, grožđica i datulja." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2022. https://urn.nsk.hr/urn:nbn:hr:159:365007

Antunović, Marija. "Proizvodnja kefirnog napitka uz dodatak suhih šljiva, grožđica i datulja." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2022. https://urn.nsk.hr/urn:nbn:hr:159:365007

Antunović, M. (2022). 'Proizvodnja kefirnog napitka uz dodatak suhih šljiva, grožđica i datulja', Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 04 August 2024, https://urn.nsk.hr/urn:nbn:hr:159:365007

Antunović M. Proizvodnja kefirnog napitka uz dodatak suhih šljiva, grožđica i datulja [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2022 [cited 2024 August 04] Available at: https://urn.nsk.hr/urn:nbn:hr:159:365007

M. Antunović, "Proizvodnja kefirnog napitka uz dodatak suhih šljiva, grožđica i datulja", Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:159:365007

Metadata
TitleProizvodnja kefirnog napitka uz dodatak suhih šljiva, grožđica i datulja
Title (english)Production of kefir beverage with addition of dried plums, raisins and dates
AuthorMarija Antunović
MentorMladen Pavlečić (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Biochemical Engineering)
(Laboratory for Biochemical Engineering, Industrial Microbiology and Malting and Brewing Technology)
Zagreb
Defense date and country2022-09-19, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
Kefirni napitak je piće dobiveno fermentacijom vodene otopine saharoze s pomoću združene kulture kefirnih zrnaca sa ili bez dodatka sušenog voća. Mikroorganizmi koji su pretežito zastupljeni u kefirnim zrncima su bakterije mliječne kiseline, kvasci, bifidobakterije i bakterije octene kiseline. Kefirna zrnca korištena u ovom radu su iz kućnog uzgoja te im je mikrobiološki sastav nepoznat. Dodatkom sušenog voća u hranjivu podlogu osigurava se dodatan izvor nutrijenata, posebice ugljika i dušika, što djeluje pozitivno na rast i aktivnost mikroorganizama prisutnih u hranjivoj podlozi. U ovom završnom radu praćen je utjecaj i tijek proizvodnje kefirnog napitka uz dodatak tri vrste sušenog voća (šljive, grožđice, datulje). Rezultati istraživanja su pokazali da je najveći porast udjela suhe tvari, u odnosu na početni udio, ostvaren u eksperimentima gdje su u hranjivu podlogu dodane datulje. Najviši prinosi produkata poput etanola, manitola, mliječne i octene kiseline zabilježeni su kod kefirnog napitka gdje su dodane suhe šljive, a gdje je istovremeno zamijećen i najveći utrošak supstrata. Zaključno, u svim eksperimentima uočen je pozitivan učinak dodatka sušenog voća na proizvodnju kefirnog napitka
Abstract (english)
Kefir drink is a beverage obtained by fermentation of an aqueous solution of sucrose with the help of a combined culture of kefir grains with or without the addition of dried fruit. Microorganisms that are predominantly present in kefir grains are lactic acid bacteria, yeasts, bifidobacteria and acetic acid bacteria. The kefir grains used in this work are from domestic cultivation and their microbiological composition is unknown. The addition of dried fruit to the nutrient medium provides an additional source of nutrients, especially carbon and nitrogen, which has a positive effect on the growth and activity of microorganisms present in the nutrient medium. In this final paper, the influence and course of production of kefir drink with the addition of three types of dried fruit (plums, raisins, dates) was observed. The research results showed that the largest increase in the proportion of dry matter, compared to the initial proportion, was achieved in the experiments where dates were added to the nutrient medium. The highest yields of products such as ethanol, mannitol, lactic and acetic acid were observed in the kefir drink where prunes were added, and where the highest consumption of substrates was also observed. In conclusion, a positive effect of the addition of dried fruit on the production of kefir drink was observed in all experiments.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:365007
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 on2024-04-09 09:18:04