Stabilnost i primjena ekstrakta polifenola iz lista masline

undergraduate thesis

• Title (english): Stability and application of polyphenol extract from olive leaves
• Author: Katarina Barilar
• Mentor: Jasna Prlić Kardum (mentor)
• Committee member: Jasna Prlić Kardum (predsjednik povjerenstva)
• Committee member: Emi Govorčin Bajsić (član povjerenstva)
• Committee member: Lidija Furač (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2023-07-07, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Fenoli su spojevi koji se nalaze u nusproduktima masline, a njihovo djelovanje može pozitivno utjecati na ljudsko zdravlje. Oni se iz nusprodukata mogu separirati ekstrakcijom pri određenim uvjetima. Pri tome je bitno odabrati prirodno otapalo koje zadovoljava kriterije zelene kemije. U posljednje vrijeme istražuju se prirodna niskotemperaturna eutektička otapala koja se dobivaju miješanjem prirodnih komponenti i imaju ogroman potencijal i mogućnosti pri ekstrakciji prirodnih komponenti iz različitih biljaka. U sklopu ovog završnog rada istraživana je ekstrakcija polifenola iz lista masline pomoću prirodnog niskotemperaturnog eutektičkog otapala pripravljenog od mliječne kiseline, fruktoze i glicina uz dodatak vode. Otapalu je određena viskoznost, gustoća i pH vrijednosti. Nakon provedene ekstrakcije, ekstrakt je umiješan u baznu, hidratantnu kremu u različitim koncentracijama. Kreme pripremljene s manjim udjelom ekstrakta, pokazale su bolju stabilnost.

Abstract (english)

Phenols are compounds found in olive byproducts, and their action can positively affect human health. They can be separated from byproducts by extraction under certain conditions. It is important to choose a natural solvent that meets the criteria of green chemistry. Recently, solvents have been reaserched, which are obtained by mixing natural components and have a huge potential and opportunities in extraction of natural components from different plants. As part of this work, the extraction of polyphenols from olive leaves using a natural deep eutectic solvent composed of lactic acid, fructose, and glycine with the addition of water was investigated. The viscosity, density, and pH values of the solvent were measured. After the extraction, different amounts of the extract are combined with the moisturizer base cream. The creams with the lowest extract content were the most stable.

• Keywords: fenoli; ekstrakcija; prirodna niskotemperaturna eutektička otapala
• Keywords (english): phenols; extraction; natural deep eutectis solvent
• Language: croatian
• URN:NBN: urn:nbn:hr:149:024319
• Study programme: Title: Chemical Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2025-01-01
• Created on: 2023-07-25 14:14:54