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master's thesis
Izolacija polifenola iz lista i korijena maslačka primjenom ekstrakcije pri povišenom i visokom tlaku
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. urn:nbn:hr:159:264454
Ćuk, Ana
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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Ćuk, A. (2016). Izolacija polifenola iz lista i korijena maslačka primjenom ekstrakcije pri povišenom i visokom tlaku (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:264454

Ćuk, Ana. "Izolacija polifenola iz lista i korijena maslačka primjenom ekstrakcije pri povišenom i visokom tlaku." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. https://urn.nsk.hr/urn:nbn:hr:159:264454

Ćuk, Ana. "Izolacija polifenola iz lista i korijena maslačka primjenom ekstrakcije pri povišenom i visokom tlaku." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. https://urn.nsk.hr/urn:nbn:hr:159:264454

Ćuk, A. (2016). 'Izolacija polifenola iz lista i korijena maslačka primjenom ekstrakcije pri povišenom i visokom tlaku', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 21 December 2024, https://urn.nsk.hr/urn:nbn:hr:159:264454

Ćuk A. Izolacija polifenola iz lista i korijena maslačka primjenom ekstrakcije pri povišenom i visokom tlaku [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2016 [cited 2024 December 21] Available at: https://urn.nsk.hr/urn:nbn:hr:159:264454

A. Ćuk, "Izolacija polifenola iz lista i korijena maslačka primjenom ekstrakcije pri povišenom i visokom tlaku", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:159:264454

Metadata
TitleIzolacija polifenola iz lista i korijena maslačka primjenom ekstrakcije pri povišenom i visokom tlaku
Title (english)Isolation of polyphenols from leaves and roots of dandelion assisted by high hydrostatic pressure and accelerated solvent extraction
AuthorAna Ćuk
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 country2016-07-14, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Maslačak je biljka koju odlikuje visoka koncentracija fenolnih spojeva te može poslužiti kao dobra sirovina za njihovu ekstrakciju. Ekstrakcija potpomognuta visokim hidrostatskim tlakom (HPAE) i ubrzana ekstrakcija otapalima pri povišenom tlaku (ASE) su novije metode izolacije bioaktivnih komponenti iz biljnog materijala. Cilj ovog rada je bio ispitati utjecaj odabranih parametara na izolaciju fenolnih spojeva iz lista i korijena maslačka. Optimalni uvjeti za izolaciju iz lista HPAE metodom su 70 % - tni etanol kao ekstrakcijsko otapalo, temperatura 60 °C, tlak 500 MPa i vrijeme ekstrakcije 5 minuta, a za izolaciju iz korijena50 % - tna vodena otopina etanola kao ekstrakcijsko otapalo, temperatura 60 °C, tlak 500 MPa i vrijeme ekstrakcije 5 minuta. Optimalni uvjeti za izolaciju iz lista ASE metodom su 50 % - tna vodena otopina etanola, temperatura 60 °C i vrijeme ekstrakcije 10 minuta, a iz korijena 50 % - tna vodena otopina etanola, temperatura 80 °C i vrijeme ekstrakcije 15 minuta. Primjenom ASE metode dobiveni su veći prinosi fenolnih spojeva nego HPAE metodom.
Abstract (english)
Dandelion is characterized by high concentrations of phenolic compounds and it can serve as a good raw material for their extraction. High hydrostatic pressure assisted extraction (HPAE) and accelerated solvent extraction (ASE) are relatively new technics which are used for the extraction of bioactive compounds from plant materials. The aim of this study was to investigate the influence of different parameters on the isolation of phenolic compounds from the leaves and roots of dandelion. Optimum conditions for extraction of an entire amount of phenols from leaves using HPAE method was as follows: ethanol in polarity of 70 % with 5 minutes duration at 60°C and 500 MPa pressure, on the other hand for extraction from roots, optimum conditions were: ethanol in polarity of 50 %, with 5 minutes duration at 60°C and 500 MPa pressure. Optimum conditions for extraction of an entire amount of phenols from leaves using ASE method was as follows: ethanol in polarity of 50 % with 10 minutes duration at 60°C. On the other hand, for extraction from roots optimum conditions were: ethanol in polarity of 50 %, with 15 minutes duration at 80°C. By applying ASE method higher yields of phenolic compounds were obtained than with HPAE method.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:264454
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 In copyright icon
Created on2017-04-24 09:50:42