prikaz prve stranice dokumenta Kritička procjena energetski disperzivne rendgenske fluorescencijske spektrometrije za multielementarnu analizu kave
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master's thesis
Kritička procjena energetski disperzivne rendgenske fluorescencijske spektrometrije za multielementarnu analizu kave
Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry, 2024. urn:nbn:hr:163:691537
Todorić, Ana
University of Zagreb
Faculty of Pharmacy and Biochemistry
Department of analytical chemistry

Institutional repository: Repository of Faculty of Pharmacy and Biochemistry University of Zagreb

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Todorić, A. (2024). Kritička procjena energetski disperzivne rendgenske fluorescencijske spektrometrije za multielementarnu analizu kave (Master's thesis). Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:163:691537

Todorić, Ana. "Kritička procjena energetski disperzivne rendgenske fluorescencijske spektrometrije za multielementarnu analizu kave." Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, 2024. https://urn.nsk.hr/urn:nbn:hr:163:691537

Todorić, Ana. "Kritička procjena energetski disperzivne rendgenske fluorescencijske spektrometrije za multielementarnu analizu kave." Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, 2024. https://urn.nsk.hr/urn:nbn:hr:163:691537

Todorić, A. (2024). 'Kritička procjena energetski disperzivne rendgenske fluorescencijske spektrometrije za multielementarnu analizu kave', Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, accessed 12 July 2024, https://urn.nsk.hr/urn:nbn:hr:163:691537

Todorić A. Kritička procjena energetski disperzivne rendgenske fluorescencijske spektrometrije za multielementarnu analizu kave [Master's thesis]. Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry; 2024 [cited 2024 July 12] Available at: https://urn.nsk.hr/urn:nbn:hr:163:691537

A. Todorić, "Kritička procjena energetski disperzivne rendgenske fluorescencijske spektrometrije za multielementarnu analizu kave", Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:163:691537

Metadata
TitleKritička procjena energetski disperzivne rendgenske fluorescencijske spektrometrije za multielementarnu analizu kave
Title (english)Critical evaluation of energy dispersive X-ray fluorescence spectrometry for multielemental analysis of coffee
AuthorAna Todorić
MentorJasna Jablan (mentor)
Committee memberJasna Jablan (predsjednik povjerenstva)
Committee memberSuzana Inić (član povjerenstva)
Committee memberMaja Bival Štefan (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Pharmacy and Biochemistry
(Department of analytical chemistry)
Zagreb
Defense date and country2024-03-18, Croatia
Scientific / art field,
discipline and subdiscipline		BIOMEDICINE AND HEALTHCARE
Pharmacy
Pharmacy
Abstract
Kava je jedan od najpopularnijih napitaka diljem svijeta stoga je ispitivanje sastava kave od iznimne važnosti kako za proizvođače tako i za potrošače. Minerali zastupljeni u kavi su, osim za kvalitetu krajnjeg proizvoda, bitni sa zdravstvenog gledišta jer neki od njih djeluju kao antioksidansi, sudjeluju u biološkim procesima u organizmu, a određeni posjeduju i toksične učinke. Cilj ovog rada bio je kritički procijeniti EDXRF tehniku za multielementarnu analizu uzoraka čiste kave, instant kave i kave s dodacima koristeći rezultate dobivene ICP-OES tehnikom kao referentne vrijednosti. Ispitani su najbolji način pripreme uzorka za EDXRF analizu, najprikladniji uvjeti mjerenja te najtočniji način kvantifikacije uzoraka. Za provjeru kvalitete rezultata dobivenih primjenom ICPOES tehnike analizirana su tri organska referentna materijala te uspoređena sa spomenutim rezultatima. Nadalje, različite kemometrijske tehnike kao što su PCA i PLS-DA primijenjene su na dobivene podatke kako bi se istražio njihov potencijal za klasifikaciju različitih vrsta kava. Dobiveni rezultati u ovom radu pokazali su da mogu biti korisni za uspostavljanje pouzdane jednostavne metode za multielementarnu analizu različitih uzoraka kave pomoću EDXRF-a, kao i za pružanje dobre osnove za daljnju primjenu EDXRF spektara kao otiska uzorka u drugim studijama sljedivosti i/ili provjere autentičnosti prehrambenih proizvoda u budućnosti.
Abstract (english)
Coffee is one of the most popular beverages around the world, which is why studying the composition of coffee is extremely important for both producers and consumers. The minerals contained in coffee are, not only important for the quality of the final product, but also for health as some of them act as antioxidants, and are involved in biological processes in the body, while others have toxic effects. The aim of this work was to critically evaluate the EDXRF technique for the multielemental analysis of samples of pure coffee, instant coffee and coffee with additives using the results obtained with the ICP-OES technique as reference values. The best method of sample preparation for EDXRF analysis, the most suitable measurement conditions and the most accurate method for quantifying the samples were examined. In order to verify the quality of the results obtained with the ICP-OES technique, three organic reference materials were analyzed and compared with the aforementioned results. Finally, different chemometric methods such as PCA and PLS-DA were applied to the data obtained to investigate their potential for the classification of different coffee varieties. It is concluded that the results obtained in this work can be useful to establish a reliable simple method for the multielemental analysis of different coffee samples by EDXRF and provide a good basis for further application of EDXRF spectra as sample fingerprint ing in other traceability and/or authentication studies of food in the future.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:163:691537
Study programmeTitle: Pharmacy - integrated undergraduate and graduate - university study
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: sveučilišni magistar farmacije (sveučilišni magistar farmacije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-05-23 13:54:40