Optimiranje procesa ekstrakcije bioaktivnih komponenti iz biljnih izvora

undergraduate thesis

• Title (english): Optimization of extractions of bioactive compounds from plant materials
• Author: Darija Đukić
• Mentor: Tomislava Vukušić (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Engineering); (Laboratory for Food Processes Engineering); Zagreb
• Defense date and country: 2018-07-16, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

Svrha ovog rada je utvrditi utjecaj ne-toplinske metode ekstrakcije primjenom visokonaponskog pražnjenja na povećanje prinosa fenolnih spojeva iz biljnih materijala. Korištena su zelena otapala koja su ekološki prihvatljivija, netoksična i nezapaljiva. Tijekom istraživanja uzorci su tretirani pri različitim frekvencijama (0, 50, 100 i 150 Hz) i naponima (5, 15, 25 kV). Ekstrakcija se provodila 3, 6 i 9 minuta s 0, 25 i 50 % vodenom otopinom etanola. Rezultati su analizirani koristeći program STATGRAPHICS Centurion. Istraživanje je pokazalo da ovakva ekstrakcija ima veći prinos fenola od klasične ekstrakcije. Najveći prinos fenolni spojeva utvrđen je pri naponu 25 kV i frekvenciji 150 Hz uz upotrebu 50 % vodene otopine etanola.

Abstract (english)

The aim of this final work is to determine the influence of non-thermal treatment high voltage discharge to increase the yield of phenolic compounds from plant material. Green solvents were used in this study because they are environmentally acceptable, non-toxic or non-flammable. During the study, the samples were treated with different frequencies (0, 50, 100 and 150 Hz) and voltages (5, 15, 25 kV). The extraction was performed for 3, 6 and 9 minutes with 0, 25 and 50 % of aqueous ethanol solution. The results were analyzed by using the STATGRAPHICS Centurion program. The study has shown that such extraction is higher phenol yield then classical extraction. The biggest yield is accomplished with voltage of 25 kV, frequency of 150 Hz and with 50% aqueous ethanol solution.

• Keywords: ekstrakcija; fenolni spojevi; optimiranje; visokonaponsko pražnjenje
• Keywords (english): extraction; high-voltage discharge; optimization; phenolic compounds
• Language: croatian
• URN:NBN: urn:nbn:hr:159:656107
• Study programme: Title: Food Technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka prehrambene tehnologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka prehrambene tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-07-19 09:45:25