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undergraduate thesis
Elektrokemijsko određivanje vitamina C u multivitaminskom pripravku
Osijek: Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, 2024. urn:nbn:hr:109:717366
Jagečić, Lara
Josip Juraj Strossmayer University of Osijek
FACULTY OF FOOD TECHNOLOGY
Sub-department of Applied Chemistry and instrumental Methods
Physical Chemistry

Institutional repository: Repository of the Faculty of Food Technology Osijek

Cite this document

Jagečić, L. (2024). Elektrokemijsko određivanje vitamina C u multivitaminskom pripravku (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY. Retrieved from https://urn.nsk.hr/urn:nbn:hr:109:717366

Jagečić, Lara. "Elektrokemijsko određivanje vitamina C u multivitaminskom pripravku." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, 2024. https://urn.nsk.hr/urn:nbn:hr:109:717366

Jagečić, Lara. "Elektrokemijsko određivanje vitamina C u multivitaminskom pripravku." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, 2024. https://urn.nsk.hr/urn:nbn:hr:109:717366

Jagečić, L. (2024). 'Elektrokemijsko određivanje vitamina C u multivitaminskom pripravku', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, accessed 15 July 2024, https://urn.nsk.hr/urn:nbn:hr:109:717366

Jagečić L. Elektrokemijsko određivanje vitamina C u multivitaminskom pripravku [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY; 2024 [cited 2024 July 15] Available at: https://urn.nsk.hr/urn:nbn:hr:109:717366

L. Jagečić, "Elektrokemijsko određivanje vitamina C u multivitaminskom pripravku", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, Osijek, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:109:717366

Metadata
TitleElektrokemijsko određivanje vitamina C u multivitaminskom pripravku
Title (english)The Electrochemical Determination of the Vitamin C in a Multivitamin Sample
AuthorLara Jagečić
MentorIvana Tomac (mentor)
GranterJosip Juraj Strossmayer University of Osijek
FACULTY OF FOOD TECHNOLOGY
(Sub-department of Applied Chemistry and instrumental Methods)
(Physical Chemistry)
Osijek
Defense date and country2024-06-19, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Engineering
Abstract
Elektrokemijske tehnike kao brze, selektivne i osjetljive su danas jedne od tehnika izbora za analizu vitamina u hrani. Multivitaminski pripravci ubrajaju se u skupine dodataka prehrani te uz minerale i vitamine sadrže i vitamin C. Vitamin C je elektroaktivna tvar te zbog mogućnosti oksidacije se jednostavno može elektrokemijski odrediti. Zadatak ovog završnog rada je bio primijeniti cikličku, diferencijalno pulsnu i pravokutnovalnu voltametriju za elektrokemijsku karakterizaciju multivitaminskog pripravka koji sadrži vitamin C. Kao osnovni elektrolit koristila se otopina KCl, a troelektrodni sustav činile su radna elektroda od ugljika sa slojem nanočestica, ugljikova pomoćna elektroda i Ag/AgCl kao referentna elektroda. Ovisno o elektrokemijskoj tehnici ispitao se utjecaj višestruke uzastopne polarizacije, utjecaj brzine polarizacije, utjecaj koncentracije i utjecaj pobudnog signala.
Abstract (english)
Electrochemical techniques, as fast, selective and sensitive, are today one of the techniques of choice for the analysis of vitamins in food. Multivitamin preparations are included in the group of food supplements, and in addition to minerals and vitamins, they also contain vitamin C. Vitamin C is an electroactive substance, and due to the possibility of oxidation, it can easily be determined electrochemically. The aim of this work was to apply cyclic, differential pulse and square-wave voltammetry for the electrochemical characterization of a multivitamin solution containing vitamin C. KCl solution was used as the basic electrolyte, and the three-electrode system consisted of a carbon working electrode with a layer of nanoparticles, a carbon auxiliary electrode and Ag/AgCl as reference electrode. Depending on the electrochemical technique, the influence of multiple consecutive polarization, the influence of the polarization, the influence of concentration and the influence of the excitation signal were examined.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:109:717366
Study programmeTitle: Food Technology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka prehrambene tehnologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka prehrambene tehnologije)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2024-07-04 10:43:46