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master's thesis
Utjecaj visoknaponskog električnog pražnjenja na prinos sekundarnih biljnih metabolita i proteina iz lista šećerne repe
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2023. urn:nbn:hr:159:391674
Ritoša, Ema
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Management, Foreign Languages for Specific Purposes and Physical Education and Health
Laboratory for Sustainable Development

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

Cite this document

Ritoša, E. (2023). Utjecaj visoknaponskog električnog pražnjenja na prinos sekundarnih biljnih metabolita i proteina iz lista šećerne repe (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:391674

Ritoša, Ema. "Utjecaj visoknaponskog električnog pražnjenja na prinos sekundarnih biljnih metabolita i proteina iz lista šećerne repe." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2023. https://urn.nsk.hr/urn:nbn:hr:159:391674

Ritoša, Ema. "Utjecaj visoknaponskog električnog pražnjenja na prinos sekundarnih biljnih metabolita i proteina iz lista šećerne repe." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2023. https://urn.nsk.hr/urn:nbn:hr:159:391674

Ritoša, E. (2023). 'Utjecaj visoknaponskog električnog pražnjenja na prinos sekundarnih biljnih metabolita i proteina iz lista šećerne repe', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 09 December 2024, https://urn.nsk.hr/urn:nbn:hr:159:391674

Ritoša E. Utjecaj visoknaponskog električnog pražnjenja na prinos sekundarnih biljnih metabolita i proteina iz lista šećerne repe [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2023 [cited 2024 December 09] Available at: https://urn.nsk.hr/urn:nbn:hr:159:391674

E. Ritoša, "Utjecaj visoknaponskog električnog pražnjenja na prinos sekundarnih biljnih metabolita i proteina iz lista šećerne repe", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:159:391674

Metadata
TitleUtjecaj visoknaponskog električnog pražnjenja na prinos sekundarnih biljnih metabolita i proteina iz lista šećerne repe
Title (english)The influence of high-voltage electric discharge on the yield of secondary plant metabolites and proteins from sugar beet leaves
AuthorEma Ritoša
MentorAnet Režek Jambrak (mentor)
Committee memberSven Karlović (predsjednik povjerenstva)
Committee memberAnita Slavica (član povjerenstva)
Committee memberMojca Čakić Semenčić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Management, Foreign Languages for Specific Purposes and Physical Education and Health)
(Laboratory for Sustainable Development)
Zagreb
Defense date and country2023-07-06, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Lišće šećerne repe je glavni otpad u proizvodnji šećera te stoga čini potencijalni i održivi izvor proteina i fenolnih spojeva za prehrambenu industriju. Cilj ovog istraživanja je odrediti utjecaj visokonaponskog električnog pražnjenja (eng. High voltage electrical discharge- HVED), na prinos ekstrakcije sekundarnih biljnih metabolita i proteina iz lista šećerne repe te usporediti rezultate s konvencionalnom metodom toplinske ekstrakcije. Ukupni proteini i fenoli u ekstraktima određivani su spektrofotometrijski. HVED potpomognutom ekstrakcijom dobiven je 13,6 % veći prinos proteina u odnosu na toplinsku. Toplinskom ekstrakcijom pri 60 ̊C u trajanju od 3 i 6 minuta dobiveni su 8,5 % veći prinosi ukupnih fenola u odnosu na HVED. Statističkom analizom u programu STATGRAPHICS utvrđeno je da vrijeme tretmana i napon nemaju statistički značajan utjecaj na pH, električnu vodljivost, prinos ukupnih proteina i prinos ukupnih fenola HVED tretiranih uzorka (p > 0,05). Duljina toplinske ekstrakcije ima statistički značajan utjecaj (p < 0,05) na prinos ukupnih proteina i ukupnih fenola.
Abstract (english)
Sugar beet leaves are the main waste of sugar production and therefore constitute a potential and sustainable source of protein and phenolic compounds for the food industry. The aim of this work was to determine the impact of high voltage electrical discharge (HVED) on the extraction yield of secondary plant metabolites and proteins from sugar beet leaves. Obtained results were compared to results of conventional thermal extraction. Total proteins and phenols in the extracts were determined spectrophotometrically. By means of HVED-assisted extraction, 13,6 % higher protein yield was obtained, compared to thermal extraction. For thermal extraction at 60 ̊C for 3 and 6 minutes, an 8,5 % higher yield of total phenols was obtained compared to HVED. Through statistical analysis in the STATGRAPHICS program, it was determined that treatment time and voltage have no statistically significant effect on pH, electrical conductivity, yield of total proteins and yield of total phenols of HVED treated samples (p > 0,05). The length of thermal extraction has a statistically significant effect (p < 0,05) on the yield of total proteins and total phenols.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:391674
Study programmeTitle: Food Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka prehrambenog inženjerstva (magistar/magistra inženjer/inženjerka prehrambenog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) icon
Created on2024-04-29 11:22:47