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master's thesis
Ekstrakcija luteina ultrazvukom iz jaja obogaćenih luteinom
2021. urn:nbn:hr:182:424771
Ćosić, Jela
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Ćosić, J. (2021). Ekstrakcija luteina ultrazvukom iz jaja obogaćenih luteinom (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:424771

Ćosić, Jela. "Ekstrakcija luteina ultrazvukom iz jaja obogaćenih luteinom." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2021. https://urn.nsk.hr/urn:nbn:hr:182:424771

Ćosić, Jela. "Ekstrakcija luteina ultrazvukom iz jaja obogaćenih luteinom." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2021. https://urn.nsk.hr/urn:nbn:hr:182:424771

Ćosić, J. (2021). 'Ekstrakcija luteina ultrazvukom iz jaja obogaćenih luteinom', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 23 January 2025, https://urn.nsk.hr/urn:nbn:hr:182:424771

Ćosić J. Ekstrakcija luteina ultrazvukom iz jaja obogaćenih luteinom [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2021 [cited 2025 January 23] Available at: https://urn.nsk.hr/urn:nbn:hr:182:424771

J. Ćosić, "Ekstrakcija luteina ultrazvukom iz jaja obogaćenih luteinom", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:182:424771

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Metadata
TitleEkstrakcija luteina ultrazvukom iz jaja obogaćenih luteinom
Title (english)Ultrasound assisted extraction of lutein from lutein-enriched eggs
AuthorJela Ćosić
MentorOlivera Galović (mentor)
MentorMartina Šrajer Gajdošik (komentor)
Committee memberTomislav Balić (predsjednik povjerenstva)
Committee memberOlivera Galović (član povjerenstva)
Committee memberMartina Šrajer Gajdošik (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2021-09-23, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Analytic Chemistry
Abstract
Lutein je biljni pigment iz skupine karotenoida, odnosno ksantofila. Koncentracija luteina određivana je u osam skupina jaja. Tri skupine jaja kupljene su u tri različita trgovačka centra, dvije skupine proizvedene su na dva obiteljska gospodarstva. Tri skupine jaja su dobivene s Fakulteta agrobiotehničkih znanosti (FAZOS), od kojih su: jedna skupina jaja fazana, druga skupina su jaja koka nesilica koje su hranjene krmnom smjesom obogaćenom luteinom, a posljednja skupina su jaja obogaćena luteinom i ostalim nutrijentima. Uporabom ultrazvučne ekstrakcije poboljšana je ekstrakcija luteina pa su vrijednosti koncentracija poboljšane za 8,95 %. Koncentracija luteina određivana je iz žumanjka jaja pomoću tekućinske kromatografije visoke djelotvornosti s UV detekcijom. Najmanja koncentracija luteina 0,7255 mg/100 g žumanjka određena je u jajima fazana, dok je najveća koncentracija luteina 5,4613 mg/100 g žumanjka, određena je u jajima koka nesilica koje su hranjene smjesom obogaćenom luteinom. Sve vrijednosti relativne standardne pogreške su veće od prihvatljivi 5 %, ali je važno napomenuti da se radi o 10 uzoraka jaja unutar svake skupine te da su jaja dobivena od različitih koka nesilica, što utječe na odstupanja relativne standardne pogreške.
Abstract (english)
Lutein is a plant pigment from the group of carotenoids, i.e. xanthophylls. Lutein concentration was determined in eight groups of eggs. Three groups of eggs were purchased in three different malls, two groups were produced on two family farms. Three groups of eggs were obtained from the Faculty of Agrobiotechnical Sciences (FAZOS), of which: one set of pheasant eggs, another set of eggs from lying hens fed with a lutein-enriched mixture, and the last set consisted of eggs enriched with lutein and other nutrients. The use of ultrasonic extraction improved the extraction of lutein, so the concentration values in analysed samples were improved by 8.95%. Lutein concentration was determined by high performance liquid chromatography with UV detection. The lowest concentration of lutein 0.7255 mg / 100 g of yolk was determined in pheasant eggs, while the highest concentration of lutein of 5.4613 mg / 100 g of yolk was determined in laying hen eggs fed with a lutein enriched mixture. All relative standard error values are greater than acceptable 5 %, but it is important to note that there are 10 egg samples within each group and that the eggs were obtained from different laying hens, which affects the deviations of the relative standard error.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:424771
Study programmeTitle: Graduate University Study of Chemistry; research program; specializations in: Research program
Course: Research program
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2022-08-03 09:39:53