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master's thesis
Valorizacija komine rajčice kao izvora nutritivno važnih minerala
Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry, 2023. urn:nbn:hr:163:588915
Gašparac, Borna
University of Zagreb
Faculty of Pharmacy and Biochemistry
Department of food chemistry
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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Gašparac, B. (2023). Valorizacija komine rajčice kao izvora nutritivno važnih minerala (Master's thesis). Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry; Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:163:588915

Gašparac, Borna. "Valorizacija komine rajčice kao izvora nutritivno važnih minerala." Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry; University of Zagreb, Faculty of Pharmacy and Biochemistry, 2023. https://urn.nsk.hr/urn:nbn:hr:163:588915

Gašparac, Borna. "Valorizacija komine rajčice kao izvora nutritivno važnih minerala." Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry; University of Zagreb, Faculty of Pharmacy and Biochemistry, 2023. https://urn.nsk.hr/urn:nbn:hr:163:588915

Gašparac, B. (2023). 'Valorizacija komine rajčice kao izvora nutritivno važnih minerala', Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry; University of Zagreb, Faculty of Pharmacy and Biochemistry, accessed 21 December 2024, https://urn.nsk.hr/urn:nbn:hr:163:588915

Gašparac B. Valorizacija komine rajčice kao izvora nutritivno važnih minerala [Master's thesis]. Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry; Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry; 2023 [cited 2024 December 21] Available at: https://urn.nsk.hr/urn:nbn:hr:163:588915

B. Gašparac, "Valorizacija komine rajčice kao izvora nutritivno važnih minerala", Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb; University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:163:588915

Metadata
TitleValorizacija komine rajčice kao izvora nutritivno važnih minerala
Title (english)Valorization of tomato pomace as a source of nutritionally important minerals
AuthorBorna Gašparac
MentorDubravka Vitali Čepo (mentor)
MentorJasna Jablan (mentor)
Committee memberDubravka Vitali Čepo (predsjednik povjerenstva)
Committee memberJasna Jablan (član povjerenstva)
Committee memberLovorka Vujić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Pharmacy and Biochemistry
(Department of food chemistry)
Zagreb
GranterUniversity of Zagreb
Faculty of Pharmacy and Biochemistry
(Department of analytical chemistry)
Zagreb
Defense date and country2023-07-17, Croatia
Scientific / art field,
discipline and subdiscipline		BIOMEDICINE AND HEALTHCARE
Pharmacy
Pharmacy
Abstract
Godišnje u svijetu zaostane oko 8 milijuna tona otpada od prerade rajčice što ima negativne učinke na okoliš te, s obzirom na činjenicu da je bogata esencijalnim nutrijentima i biološki vrijednim fitokemikalijama predstavlja, veliki ekonomski gubitak. Osnovni ciljevi ovog rada su istražiti primjenjivost rendgenske fluorescencijske spektrometrije s totalnom refleksijom (TXRF) i zelenih tehnika pripreme uzorka u istraživanju mineralnog sadržaja različitih frakcija komine rajčice sušenih u različitim uvjetima (sušenje u termostatu na 70 C i sušenje smrzavanjem). Rezultati optimizacije metode ukazuju da kombinacija 1%-tnog Triton-a X-100® uz izostavljanje koraka soniciranja i volumen uzorka od 8 µL daje najtočnije rezultate. Rezultati istraživanja su pokazali da se TXRF može koristiti u određivanju mineralnog sadržaja analiziranih uzoraka te da priprema uzorka zelenim procesom suspendiranja daje jednako točne rezultate kao i konvencionalne tehnike koje karakterizira puno veći ekološki otisak. Mineralni sadržaj komine rajčice u skladu je s dostupnim literaturnim podacima, a način sušenja uzorka ne utječe značajno na mineralni sadržaj analiziranih uzoraka. Rezultati ovog istraživanja doprinijeti će trenutnim saznanjima o prednostima i nedostacima navedene analitičke tehnike te daljnjoj valorizaciji komine rajčice kao sekundarne sirovine bogate nutritivno važnim mineralima.
Abstract (english)
Annually, approximately 8 million tons of tomato processing waste is generated worldwide, which has a negative environmental impact. Considering how rich in essential nutrients and biologically valuable phytochemicals this waste is, this represents a significant economic loss. The main objectives of this study are to investigate the applicability of total reflection X-ray fluorescence spectrometry (TXRF) and green sample preparation techniques in exploring the mineral composition of different fractions of tomato pomace dried under different conditions (thermostatic drying at 70°C and freeze-drying). The results of the method optimization indicate that the combination of 1% Triton X-100® with omission of sonication and sample volume of 8 µL gives most accurate results. The results of this research have demonstrated that TXRF can be utilized for determining the mineral composition of the analyzed samples. Furthermore, sample preparation using green suspension methods yields equally accurate results as conventional techniques, characterized by a much larger ecological footprint. The mineral composition of tomato pomace is in accordance with available literature data, and the drying method does not significantly affect the mineral composition of the analyzed samples. The findings of this research could contribute to current knowledge regarding the advantages and limitations of the aforementioned analytical technique and further valorization of tomato pomace as a secondary resource rich in nutritionally important minerals.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:163:588915
Study programmeTitle: Pharmacy
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: magistar/magistra farmacije (magistar/magistra farmacije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-11-21 14:39:44