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master's thesis
Određivanje profila masnih kiselina u hrani za nesilice
Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2021. urn:nbn:hr:182:914192
Mikić, Slavica
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

Institutional repository: Repository of the Department of Chemistry, Osijek

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Mikić, S. (2021). Određivanje profila masnih kiselina u hrani za nesilice (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:914192

Mikić, Slavica. "Određivanje profila masnih kiselina u hrani za nesilice." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2021. https://urn.nsk.hr/urn:nbn:hr:182:914192

Mikić, Slavica. "Određivanje profila masnih kiselina u hrani za nesilice." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2021. https://urn.nsk.hr/urn:nbn:hr:182:914192

Mikić, S. (2021). 'Određivanje profila masnih kiselina u hrani za nesilice', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 13 January 2025, https://urn.nsk.hr/urn:nbn:hr:182:914192

Mikić S. Određivanje profila masnih kiselina u hrani za nesilice [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2021 [cited 2025 January 13] Available at: https://urn.nsk.hr/urn:nbn:hr:182:914192

S. Mikić, "Određivanje profila masnih kiselina u hrani za nesilice", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:182:914192

Metadata
TitleOdređivanje profila masnih kiselina u hrani za nesilice
Title (english)Determination of fatty acid profile in laying hens feed
AuthorSlavica Mikić
MentorOlivera Galović (mentor)
Committee memberMartina Šrajer Gajdošik (predsjednik povjerenstva)
Committee memberOlivera Galović (član povjerenstva)
Committee memberAnamarija Stanković (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2021-10-22, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Analytic Chemistry
Abstract
Triacilgliceroli su esteri alkohola glicerola i masnih kiselina. Masne kiseline skladište i transportiraju energiju, izgrađuju stanične membrane i reguliraju gene. U radu je opisano određivanje profila masnih kiselina u hrani za nesilice. Uspoređena su četiri načina ekstrakcije: Soxhlet ekstrakcija, mikrovalna ekstrakcija, direktna ultrazvučna ekstrakcija i indirektna ultrazvučna ekstrakcija. Ekstrahirani uzorci su prevedeni u metilne estere masnih kiselina uz borov trifluorid u metanolu i analizirani metodom plinske kromatografije. Najuspješnijim metodoma su se pokazale direktna i indirektna ultrazvučna ekstrakcija s najviše ukupno određenih masnih kiselina, zatim Soxhlet ekstrakcija nakon koje u uzorcima nije određena niti jedna PUFA (engl. Polyunsaturated Fatty Acids) n-3 masna kiselina dok se mikrovalna ekstrakcija pokazala najmanje uspješnom prema broju ukupno određenih masnih kiselina.
Abstract (english)
Triacylglycerols are esters of alcohol glycerol and fatty acids. Fatty acids store and transport energy, build cell membranes and regulate genes. This paper describes the determination of fatty acid profiles in chicken feed mixtures. Four extraction methods were compared: Soxhlet extraction, microwave extraction, direct ultrasonic extraction, and indirect ultrasonic extraction. The extracted samples were converted to fatty acid methyl esters with boron trifluoride in methanol and analyzed by gas chromatography. The most successful methods were direct and indirect ultrasonic extraction with the highest total number of fatty acids detected, followed by Soxhlet extraction after which PUFA (Polyunsaturated Fatty Acids) n-3 fatty acids were not detected in the samples, while microwave extraction proved the least successful according to the number of fatty acids detected.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:914192
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 07:44:10