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doctoral thesis
Nutraceutičke i antinutraceutičke komponente u hrvatskim crnim vinima sa zaštićenom oznakom izvornosti
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2019. urn:nbn:hr:159:488263
Žurga, Paula
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Quality Control
Laboratory for Food Quality Control

Institutional repository: Repository of the Faculty of Food Technology and Biotechnology

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Žurga, P. (2019). Nutraceutičke i antinutraceutičke komponente u hrvatskim crnim vinima sa zaštićenom oznakom izvornosti (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:488263

Žurga, Paula. "Nutraceutičke i antinutraceutičke komponente u hrvatskim crnim vinima sa zaštićenom oznakom izvornosti." Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2019. https://urn.nsk.hr/urn:nbn:hr:159:488263

Žurga, Paula. "Nutraceutičke i antinutraceutičke komponente u hrvatskim crnim vinima sa zaštićenom oznakom izvornosti." Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2019. https://urn.nsk.hr/urn:nbn:hr:159:488263

Žurga, P. (2019). 'Nutraceutičke i antinutraceutičke komponente u hrvatskim crnim vinima sa zaštićenom oznakom izvornosti', Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 23 December 2024, https://urn.nsk.hr/urn:nbn:hr:159:488263

Žurga P. Nutraceutičke i antinutraceutičke komponente u hrvatskim crnim vinima sa zaštićenom oznakom izvornosti [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2019 [cited 2024 December 23] Available at: https://urn.nsk.hr/urn:nbn:hr:159:488263

P. Žurga, "Nutraceutičke i antinutraceutičke komponente u hrvatskim crnim vinima sa zaštićenom oznakom izvornosti", Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:159:488263

Metadata
TitleNutraceutičke i antinutraceutičke komponente u hrvatskim crnim vinima sa zaštićenom oznakom izvornosti
Title (english)Nutraceutical and antinutraceutical components of Croatian red wines with protected designation of origin
AuthorPaula Žurga
MentorNada Vahčić (mentor)
MentorMladenka Malenica (komentor)
Committee memberKarin Kovačević-Ganić (predsjednik povjerenstva)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Food Quality Control)
(Laboratory for Food Quality Control)
Zagreb
Defense date and country2019-12-13, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Universal decimal classification
(UDC)		633/635 - Horticulture. Fruit growing. Viticulture. Gardening
Abstract
Antioksidacijski kapacitet te koncentracije nutraceutičkih (fenolni spojevi, makro-, mikro- i elementi u tragovima) i antinutraceutičkih (toksični elementi, biogeni amini, okratoksin A) komponenata određene su u 110 uzoraka hrvatskih crnih vina sa zaštićenom oznakom izvornosti. Istraživanje je obuhvatilo vina sedam sorti iz pet godišta berbe i sedam zaštićenih oznaka izvornosti. Antioksidacijski kapacitet vina te koncentracije pojedinačnih fenola u hrvatskim su vinima ovisne većim dijelom o geografskom podrijetlu vina, a manjim dijelom o karakteristikama proizvodne sorte, dok je elementni sastav vina najvećim dijelom ovisan o geografskom podrijetlu vina. Među biogenim aminima, histamin je jedini bio sortno i regionalno specifičan. Više koncentracije histamina izmjerene su u vinima s višim pH te u vinima proizvedenim od grožđa ubranog u klimatološki nepovoljnoj godini. Koncentracije okratoksina A i udio kontaminiranih vina postupno je rastao od sjevera prema jugu. Također je učestalost kontaminacije upućivala na sortno specifičnu osjetljivost. Analizom glavnih komponenata i kanoničkom diskriminacijskom analizom istražen je potencijal ispitivanih fenolnih spojeva i elemenata za diskriminaciju hrvatskih crnih vina s obzirom na sortu, geografsko podrijetlo i godište berbe. Učinkoviti fenolni spojevi u diskriminaciji vina bili su: katehin, kvercetin, miricetin, vanilinska i ferulinska kiselina i resveratrol. Učinkoviti elementi u diskriminaciji vina bili su K, Na, Al, Cr, Co i As.
Abstract (english)
Antioxidant capacity and concentrations of nutraceutical (phenols, macro-, micro- and trace elements) and antinutraceutical (toxic elements, biogenic amines and ochratoxin A) components were determined in 110 samples of Croatian red wines with protected designation of origin. Seven varieties, five vintages and seven protected designations of origin were included in the study. Antioxidant capacity and concentrations of individual phenols in Croatian wines depended mostly on the geographic origin and less on the variety, while elemental composition in greatest part depended on the geographic origin. Among biogenic amines, only histamine was varietally and regionally specific. Higher histamine concentrations were measured in wines with higher pH and in wines produced from the grapes harvested in the climatologically unfavorable year. Ochratoxin A concentration and frequency of contamination increased southwards. The frequency of ochratoxin A contamination pointed to variety-specific susceptibility. Principal component analysis and canonical discriminant analysis were used to investigate the potential of investigated phenols and elements to discriminate Croatian red wines according to variety, geographic origin and vintage. Catechin, quercetin, miricetin, vanillic and ferulic acid and resveratrol were efficient phenols while K, Na, Al, Cr, Co and As were efficient elements in wine discrimination.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:488263
Study programmeTitle: Postgraduate PhD Study in Biotechnology and Bioprocess Engineering
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti (doktor/doktorica znanosti)
Type of resourceText
Extent159 str. : 30 cm
File originBorn digital
Access conditionsOpen access
Terms of useLicence Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) icon
Created on2021-01-28 11:47:19