prikaz prve stranice dokumenta Ekstrakcija fenolnih spojeva iz pokožice grožđa primjenom eutektičnih otapala
Access restricted to students and staff of home institution
master's thesis
Ekstrakcija fenolnih spojeva iz pokožice grožđa primjenom eutektičnih otapala
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. urn:nbn:hr:159:941608
Šolčić, Ivana
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Biochemical Engineering
Laboratory for Cell Technology, Application and Biotransformations

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

Cite this document

Šolčić, I. (2014). Ekstrakcija fenolnih spojeva iz pokožice grožđa primjenom eutektičnih otapala (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:941608

Šolčić, Ivana. "Ekstrakcija fenolnih spojeva iz pokožice grožđa primjenom eutektičnih otapala." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. https://urn.nsk.hr/urn:nbn:hr:159:941608

Šolčić, Ivana. "Ekstrakcija fenolnih spojeva iz pokožice grožđa primjenom eutektičnih otapala." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. https://urn.nsk.hr/urn:nbn:hr:159:941608

Šolčić, I. (2014). 'Ekstrakcija fenolnih spojeva iz pokožice grožđa primjenom eutektičnih otapala', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 21 December 2024, https://urn.nsk.hr/urn:nbn:hr:159:941608

Šolčić I. Ekstrakcija fenolnih spojeva iz pokožice grožđa primjenom eutektičnih otapala [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2014 [cited 2024 December 21] Available at: https://urn.nsk.hr/urn:nbn:hr:159:941608

I. Šolčić, "Ekstrakcija fenolnih spojeva iz pokožice grožđa primjenom eutektičnih otapala", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:159:941608

Metadata
TitleEkstrakcija fenolnih spojeva iz pokožice grožđa primjenom eutektičnih otapala
Title (english)Application of deep eutectic solvents in extraction of phenolic compounds from grape skin
AuthorIvana Šolčić
MentorIvana Radojčić Redovniković (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Biochemical Engineering)
(Laboratory for Cell Technology, Application and Biotransformations)
Zagreb
Defense date and country2014-09-23, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
Pokožica grožđa smatra se otpadom koji nastaje u procesu proizvodnje vina, pa tako i pokožica Plavca malog, koja je bogata fenolnim spojevima, koji su se pokazali kao snažni antioksidansi, te se kao takvi mogu koristiti kao dodaci prehrani. Iz tog je razloga potrebno primijeniti proces „zelene“ ekstrakcije, te su se u tom području kao dobar izbor pokazala eutektična otapala koja su ekološki u potpunosti prihvatljiva i ne djeluju štetno na ljudsko zdravlje. Kao najučinkovitije otapalo za ekstrakciju ukupnih fenolnih spojeva, flavan-3-ola, flavonola i antocijana pokazalo se otapalo sastavljeno od kolin klorida i oksalne kiseline sa udjelom vode od 25 %. U ekstrakciji fenolnih kiselina najbolje je bilo otapalo sastavljeno od kolin klorida i sorboze s udjelom vode od 50 %. Najzastupljeniji antocijan je malvidin-3-glukozid, kojeg je najviše ekstrahirano sa eutektičnim otapalom sastavljenim od kolin klorida i oksalne kiseline sa 25 % vode u otapalu. Eutektična otapala pokazala su se učinkovitija u ekstrakciji fenolnih spojeva u odnosu na klasičnu ekstrakciju metanolom i zakiseljenim metanolom, što nam ukazuje na mogućnost potencijalne zamjene klasičnih organskih otapala eutektičnim otapalima u ekstrakciji fenolnih spojeva iz pokožice grožđa i drugih biljnih materijala.
Abstract (english)
Grape skin is considered waste generated in the wine-making process, including the skin of grape Plavac mali, rich in phenolic compounds, which have proved to be powerful antioxidants, and as such can be used as nutritional supplements or pharmaceuticals. For this reason it is necessary to apply the process of "green" extraction, in which area eutectic solvents are good option,completely ecologically acceptable and do not adversely affect human health. As the most effective solvent for the extraction of total phenolic compounds, flavan-3-ols, flavonols and anthocyanins was a solvent composed of choline chloride and oxalic acid with a water content of 25%. The extraction of the phenolic acids was the best with solvent composed of choline chloride and sorbose with a water content of 50%. The most common anthocyanin is malvidin-3-glucoside, which is the best extracted with eutectic solvent composed of choline chloride and oxalic acid with 25% of water in the solvent. Eutectic solvents have proved to be effective in the extraction of phenolic compounds compared to conventional extraction with methanol and acidified methanol, which indicates the possibility of a potential replacement of conventional organic solvents with eutectic solvents in the extraction of phenolic compounds from the grape skin and other plant material.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:941608
Study programmeTitle: Molecular Biotechnology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka molekularne biotehnologije (magistar/magistra inženjer/inženjerka molekularne biotehnologije)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2017-05-02 10:39:06