prikaz prve stranice dokumenta Elaginska kiselina i derivati elaginske u naru (Punica granatum L.) s različitih lokacija uzgoja
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master's thesis
Elaginska kiselina i derivati elaginske u naru (Punica granatum L.) s različitih lokacija uzgoja
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2013. urn:nbn:hr:159:966298
Anušić, Sandra
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Engineering
Laboratory for Technology of Fruits and Vegetables Preservation and Processing

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

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Anušić, S. (2013). Elaginska kiselina i derivati elaginske u naru (Punica granatum L.) s različitih lokacija uzgoja (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:966298

Anušić, Sandra. "Elaginska kiselina i derivati elaginske u naru (Punica granatum L.) s različitih lokacija uzgoja." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2013. https://urn.nsk.hr/urn:nbn:hr:159:966298

Anušić, Sandra. "Elaginska kiselina i derivati elaginske u naru (Punica granatum L.) s različitih lokacija uzgoja." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2013. https://urn.nsk.hr/urn:nbn:hr:159:966298

Anušić, S. (2013). 'Elaginska kiselina i derivati elaginske u naru (Punica granatum L.) s različitih lokacija uzgoja', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 21 December 2024, https://urn.nsk.hr/urn:nbn:hr:159:966298

Anušić S. Elaginska kiselina i derivati elaginske u naru (Punica granatum L.) s različitih lokacija uzgoja [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2013 [cited 2024 December 21] Available at: https://urn.nsk.hr/urn:nbn:hr:159:966298

S. Anušić, "Elaginska kiselina i derivati elaginske u naru (Punica granatum L.) s različitih lokacija uzgoja", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2013. Available at: https://urn.nsk.hr/urn:nbn:hr:159:966298

Metadata
TitleElaginska kiselina i derivati elaginske u naru (Punica granatum L.) s različitih lokacija uzgoja
Title (english)Ellagic acid and its derivatives in pomegranate (Punica granatum L) from growing site of cultivations
AuthorSandra Anušić
MentorVerica Dragović Uzelac (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Food Engineering)
(Laboratory for Technology of Fruits and Vegetables Preservation and Processing)
Zagreb
Defense date and country2013-07-15, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Poznato je da na koncentracije fenolnih spojeva u voću utječu agroekološki uvjeti ali i termin berbe. Stoga je cilj ovog istraživanja bio ispitati utjecaj područja uzgoja i termina berbe na količinu ukupnih fenola (određivano spektrofotometrijski), pojedinačnih fenolnih spojeva, elaginske kiseline i njenih derivata (određivano primjenom HPLC uz UV PDA) u zrnima nara. Također je ispitano postoji li povezanost između koncentracije ukupnih i pojedinačnih fenolnih spojeva te antioksidacijske aktivnosti određivane primjenom FRAP metode. Utvrđeno je da su plodovi nara dobar izvor fenolnih spojeva neovisno o području uzgoja i terminu berbe. Značajna skupina spojeva određena u sjemenkama nara su elaginska kiselina i derivati elaginske kiseline (punikalagin 1 i 2 ). U svim ispitivanim ekstraktima plodova nara određena je značajna antioksidacijska aktivnost. Na temelju regresijske analize dobra linearna povezanost antioksidacijske aktivnosti utvrđena je samo s koncentracijom ukupnih fenola, dok je istovremeno utvrđeno da pojedinačni fenolni spojevi slabo doprinose antioksidacijskoj aktivnosti (r < 0,5).
Abstract (english)
It is known that the concentration of phenolic compounds in fruits is affected by agroecological factors and with date of harvesting. Therefore, the goal of this research was to examine the influence of growing site of cultivations as well as the influence of date of harvesting on the amount of total phenols (determined spectrophotometrically), individual phenolic compounds, ellagic acid and its derivatives (determined using HPLC with UV PDA) in pomegranate seeds. It is also researched is there a correlation between the concentrations of total and individual phenolic and antioxidant activity determined using FRAP methods. It was found that the pomegranate is a good source of phenolic compounds, regardless of growing site of cultivations and date of harvesting. A significant group of compounds determined in the pomegranate seeds are ellagic acid and its derivatives (punicalagins 1 and 2). In all investigated pomegranate seeds extract was determined a significant antioxidant activity. Based on regression analysis, a good linear correlation of antioxidant activity was found only with the of total phenolics, while it was found that individual phenolic compounds were not remarkable contribute to the antioxidant activity (r < 0.5).
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:966298
Study programmeTitle: Food Safety Management
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka upravljanja sigurnošću hrane (magistar/magistra inženjer/inženjerka upravljanja sigurnošću hrane)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
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Created on2017-05-04 12:45:04