Izolacija fenolnih spojeva iz komine masline

master's thesis

• Title (english): Isolation of phenolic compounds from olive pomace
• Author: Petra Jurković
• Mentor: Klara Kraljić (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Engineering); (Laboratory for Oil and Fat Technology); Zagreb
• Defense date and country: 2017-07-18, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

Zadaća zelene kemije je zamijeniti konvencionalne metode ekstrakcije sa novim, ekološki prihvatljivijim metodama. Cilj ovog rada bio je odabrati otapalo i metodu te parametre (udio vode u otapalu, snaga mikrovalova, vrijeme trajanja ekstrakcije) za ekstrakciju fenolnih spojeva iz komine masline u skladu s principima zelene kemije. Korištena su eutektička otapala kao zamjena za metanol te metode ekstrakcije potpomognute mikrovalovima i ultrazvukom s ciljem ubrzavanja procesa ekstrakcije. Kao najpogodnije eutektičko otapalo za ekstrakciju fenolnih spojeva iz komine masline pokazao se kolin citrat. Najveći udio fenolnih spojeva ekstrahiran je metodom ekstrakcije potpomognutom djelovanjem mikrovalova. Optimalni parametri ekstrakcije su udio vode u otapalu 30%, vrijeme ekstrakcije 12 minuta te snaga mikrovalova od 300 W. Djelovanjem mikrovalova na ekstrakciju fenolih spojeva uz odabrane parametre, proces ekstrakcije je skraćen za 92% te je ekstrahirano 28% više fenolnih spojeva u odnosu na konvencionalnu metodu ekstrakcije metanolom.

Abstract (english)

The task of green chemistry is to replace conventional extraction methods with new, environmentally acceptable methods. The aim of this paper was to determine the most suitable solvent and method parameters (solvent water content, microwave power, extraction time) for the extraction of phenolic compounds from olive pomace according to green chemistry. Eutectic solvents were used as substitution for methanol. Extraction by microwaves and ultrasonic were used to accelerate the extraction process. The most effective eutectic solvent for the extraction of phenolic compounds in olive pomace was choline citrate. The highest proportion of phenolic compounds was extracted by microwaves extraction. Specified extraction parameters include 30% water in the solvent, 12 minutes extraction time, and microwave power 300 W. Using microwave assisted extraction of phenolic compounds with selected parameters resulted in reduction of extraction time by 92% and increase of phenolic yield for 28% when compared to conventional methanol extraction method.

• Keywords: eutektička otapala; fenolni spojevi; ekstrakcija; mikrovalovi; komina masline
• Keywords (english): eutectic solvents; phenolic compounds; extraction; microwaves; olive pomace
• Language: croatian
• URN:NBN: urn:nbn:hr:159:847484
• Study programme: Title: 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 resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-11-06 13:37:08