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master's thesis
Određivanje umjetnog bojila (sunset yellow) u prehrambenim proizvodima
diplomski rad
Split: University of Split, Faculty of Chemistry and Technology, 2016. urn:nbn:hr:167:421716
Lebo, Anja
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Institutional repository: Repository of the Faculty of chemistry and technology

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Lebo, A. (2016). Određivanje umjetnog bojila (sunset yellow) u prehrambenim proizvodima : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:421716

Lebo, Anja. "Određivanje umjetnog bojila (sunset yellow) u prehrambenim proizvodima : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2016. https://urn.nsk.hr/urn:nbn:hr:167:421716

Lebo, Anja. "Određivanje umjetnog bojila (sunset yellow) u prehrambenim proizvodima : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2016. https://urn.nsk.hr/urn:nbn:hr:167:421716

Lebo, A. (2016). 'Određivanje umjetnog bojila (sunset yellow) u prehrambenim proizvodima : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 24 December 2024, https://urn.nsk.hr/urn:nbn:hr:167:421716

Lebo A. Određivanje umjetnog bojila (sunset yellow) u prehrambenim proizvodima : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2016 [cited 2024 December 24] Available at: https://urn.nsk.hr/urn:nbn:hr:167:421716

A. Lebo, "Određivanje umjetnog bojila (sunset yellow) u prehrambenim proizvodima : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:167:421716

Metadata
TitleOdređivanje umjetnog bojila (sunset yellow) u prehrambenim proizvodima : diplomski rad
Title (english)Determination of artificial colorings (sunset yellow) in food products : diploma thesis
AuthorAnja Lebo
MentorMaša Buljac (mentor)
Committee memberMarija Bralić (predsjednik povjerenstva)
Committee memberMarijo Buzuk (član povjerenstva)
Committee memberMaša Buljac (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2016-10-18, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom diplomskom radu određivane su koncentracije umjetnog bojila Sunset Yellow (SY), u raznim prehrambenim proizvodima, spektrofotometrijskom UV/Vis i voltametrijskom metodom. Usporedbom dobivenih rezultata pomoću ovih dviju metoda moguće je ocijeniti relevantnost pojedine metode za analitičko određivanje SY. Spektrofotometrijskim mjerenjima SY je određivan pri dvije pH vrijednosti i to pri pH 7 (u čistoj vodi), te pri pH 4 (pH je prilagođen dodatkom limunske kiseline) kod valne duljine od 484 nm. Koncentracije u tekućim uzorcima, utvrđene ovom metodom, su se kretale u intervalima od 15,36 mg/L – 35,52 mg/L, dok su se u krutim uzorcima kretale od 39,82 mg/kg - 240,7 mg/kg.. Za voltametrijska mjerenja su korištene dvije metode: ciklička voltametrija (CV) i pravokutnovalna voltametrija. Dobivene koncentracije tekućih uzoraka, koristeći voltametrijske metode, su se nalazile u intervalu od 14,5 mg/L – 26,3 mg/L, dok su se koncentracije krutih uzoraka nalazile u intervalu od 7 mg/kg – 48 mg/kg.
Abstract (english)
In these thesis artificial dyes Sunset Yellow is determined in food products; with Spectrophotometric UV/Vis method and with voltammetric method. Comparing final results with those two methods it is possible to evaluate relevance each method for analytic determination of SY. With spectrophotometric measurements SY was determined at two pH values, at pH=7 (in pure water) and at pH≈4 (pH is adjusted with addition of citric acid) at wavelength 484 nm. Concentrations in liquid samples, determinates with this method were inside interval 15.36 mg/L – 35.52 mg/L while in solid samples was between 39.82 mg/kg – 240.7 mg/kg . For voltammetric measurements two methods were used, cycle voltammetric and square wave voltammetric. The resulting concentration of liquid samples using voltammetric method were in the interval from 14.5 mg/L – 26.3 mg/L, while concentration of solid samples were in the interval 7 mg/kg – 48 mg/kg.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:421716
Study programmeTitle: Chemical Technology; specializations in: Materials, Environmental Protection, Mediteranean Cultures
Course: Materials
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2018-01-25 09:40:51