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undergraduate thesis
SPME-GC-MS analiza sira iz mišine
završni rad
2021. urn:nbn:hr:167:451149
Uremović, Ivana
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Uremović, I. (2021). SPME-GC-MS analiza sira iz mišine : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:451149

Uremović, Ivana. "SPME-GC-MS analiza sira iz mišine : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:451149

Uremović, Ivana. "SPME-GC-MS analiza sira iz mišine : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:451149

Uremović, I. (2021). 'SPME-GC-MS analiza sira iz mišine : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 20 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:451149

Uremović I. SPME-GC-MS analiza sira iz mišine : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2021 [cited 2024 November 20] Available at: https://urn.nsk.hr/urn:nbn:hr:167:451149

I. Uremović, "SPME-GC-MS analiza sira iz mišine : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:167:451149

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Metadata
TitleSPME-GC-MS analiza sira iz mišine : završni rad
Title (english)SPME-GC-MS analysis of cheese in a sack : bachelor thesis
AuthorIvana Uremović
MentorMarina Zekić (mentor)
Committee memberIgor Jerković (predsjednik povjerenstva)
Committee memberZvonimir Marijanović (član povjerenstva)
Committee memberMarina Zekić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2021-09-27, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom završnom radu analiziran je sastav i sadržaj hlapljivih spojeva sira iz mišine. Izolacija hlapljivih spojeva izvršena je mikroekstrakcijom vršnih para na čvrstoj fazi korištenjem sivog vlakna pri tri različite temperature (40, 50 i 60°C). Dobiveni uzorci su analizirani vezanim sustavom plinska kromatografija- spektrometrija masa na HP-5MS koloni. Svi uzorci sadrže karboksilne kiseline i estere, a u svim uzorcima pronađen je i alkohol etanol.U sva tri uzorka je najveći sadržaj karboksilnih kiselina a zanimljivo je što njihov sadržaj raste sa temperaturom ekstrakcije. Ovakvi rezultati se mogu objasniti time da pri povišenoj temperaturi vjerojatno dolazi do hidrolize estera čime nastaje veći sadržaj kiselina.
Abstract (english)
In this bachelor thesis, the composition and content of volatile compounds from the cheese in a sack were analyzed. Isolation of volatile compounds was performed by solid phase microextraction (HS-SPME) using gray fiber at three different temperatures (40, 50 and 60°C). The obtained samples were analyzed by coupled gas chromatography-mass spectrometry system on an HP-5MS colum. All samples contain carboxylic acids and esters and alcohol ethanol was found in all samples. All three samples have the highest content of carboxylic acids and it is interesting that their content increases with the extraction temperature. Such results can be explained by the fact that at elevated temperature ester hydrolysis is likely to occur, resulting in a higher acid content.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:451149
Study programmeTitle: Protection and Recycling of Materials
Study programme type: professional
Study level: undergraduate
Academic / professional title: stručni/a prvostupnik/ prvostupnica (baccalaureus/ baccalaurea) inženjer/ inženjerka kemijskog inženjerstva (stručni/a prvostupnik/ prvostupnica (baccalaureus/ baccalaurea) inženjer/ inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2023-12-15
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Created on2021-12-15 09:29:10