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undergraduate thesis
Hlapljivi spojevi meda od facelije prije i poslije zagrijavanja
završni rad
2018. urn:nbn:hr:167:215015
Vlaić, Ivan
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Vlaić, I. (2018). Hlapljivi spojevi meda od facelije prije i poslije zagrijavanja : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:215015

Vlaić, Ivan. "Hlapljivi spojevi meda od facelije prije i poslije zagrijavanja : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:215015

Vlaić, Ivan. "Hlapljivi spojevi meda od facelije prije i poslije zagrijavanja : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:215015

Vlaić, I. (2018). 'Hlapljivi spojevi meda od facelije prije i poslije zagrijavanja : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 20 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:215015

Vlaić I. Hlapljivi spojevi meda od facelije prije i poslije zagrijavanja : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2018 [cited 2024 November 20] Available at: https://urn.nsk.hr/urn:nbn:hr:167:215015

I. Vlaić, "Hlapljivi spojevi meda od facelije prije i poslije zagrijavanja : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:167:215015

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Metadata
TitleHlapljivi spojevi meda od facelije prije i poslije zagrijavanja : završni rad
Title (english)Volatile compounds of phacelia (Phacelia tanacetifolia Benth.) honey before and after heating : bachelor thesis
AuthorIvan Vlaić
MentorZvonimir Marijanović (mentor)
MBZ: 344116
Committee memberMarina Zekić (predsjednik povjerenstva)
Committee memberIvana Generalić Mekinić (član povjerenstva)
Committee memberZvonimir Marijanović (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2018-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Mnogi spojevi biološkog i botaniĉkog podrijetla u medu nisu stabilni, naroĉito hlapljive tvari, a njihove se strukture mogu transformirati tijekom sazrijevanja meda, njegova skladištenja i zagrijavanja. U ovom radu se istraživao utjecaj zagrijavanja na sastav i sadržaj hlapljivih spojeva u medu od facelije. Uzorak meda se zagrijavao na 150 °C (5 min) bez dodatka vode. Hlapljivi spojevi ekstrahirani su pomoću diklormetanskog otapala postupkom ultrazvuĉne ekstrakcije (USE) pri sobnoj temperaturi. Ekstrakti su analizirani vezanim sustavom plinska kromatografija-masena spektrometrija (GC-MS). Siringaldehid, biomarker meda od facelije se pokazao stabilnim tijekom procesa zagrijavanja do temperature 150 o C. Dominantni spojevi identificirani u diklormetanskom ekstraktu dobiveni nakon zagrijavanja meda na 150 °C su 5-hidroksimetilfurfural i piranski derivat 2,3-dihidro-3,5-dihidroksi-6-metil-4H-piran-4-on.
Abstract (english)
Many compounds of biological and botanical origin in honey are not stable, particularly volatile substances, and their structures can be transformered during honey maturation, storage and heating. In this paper was inestigated the influence of heating on the composition and content of phacelia honey.. The honey sample was heated to 150 o C (5 min.) without any addition of water. Volatile compounds were extracted with dichloromethane using ultrasound assisted solvent extraction (USE) at room temperature. The extracts were analyzed by gas chromatography-mass spectrometry (GC-MS). Phacelia tanacetifolia Benth. honey biomarker syringaldehyde proved to be stable throughout heating procedure up to 150 o C. The dominant compounds identified in dichloromethane extract obtained after heating of honey at 150 o C were thermal artefacts 5- hydroxymethylfurfural and pyran derivative 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4- one.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:215015
Study programmeTitle: Chemical Technology; specializations in: Chemical Technology and Materials, Food Technology
Course: Chemical Technology and Materials
Study programme type: professional
Study level: undergraduate
Academic / professional title: stručni/a pristupnik/pristupnica kemijskog inženjerstva (stručni/a pristupnik/pristupnica kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteKljučne riječi doradio knjižničar/ Key words are revised by the librarian
Created on2019-03-26 11:28:54