Impact of high voltage electrical discharges and green solvents in extraction of bioactive compounds from selected Mediterranean herbs

doctoral thesis

• Title (croatian): Utjecaj primjene zelenih otapala i visokonaponskoga električnoga pražnjenja na ekstrakciju bioaktivnih spojeva iz odabranoga sredozemnoga bilja
• Author: Marinela Nutrizio
• Mentor: Anet Režek Jambrak (mentor)
• Committee member: Jasenka Gajdoš Kljusurić (predsjednik povjerenstva)
• Committee member: Tonči Rezić (član povjerenstva)
• Committee member: Marko Vinceković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Management, Foreign Languages for Specific Purposes and Physical Education and Health); (Laboratory for Sustainable Development); Zagreb
• Defense date and country: 2024, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology
• Universal decimal classification (UDC): 66 - Chemical technology. Chemical and related industries

Abstract

The aim of the study was to investigate a sustainable food extraction method high voltage electrical discharge (HVED) with green solvents for the extraction of bioactive compounds from Mediterranean herbs rosemary and oregano. The theoretical predictive tools were used to assess the solubility of certain bioactive compounds in green solvents, to reduce solvent consumption during experimentation. Results showed that HVED is a highly efficient green extraction method that can be a sustainable alternative to conventional extraction methods. The obtained extracts were stabilized using microencapsulation which was presented as a valuable tool for preserving polyphenol stability in aqueous extracts, contributing to the development of functional foods with customizable properties.

Abstract (croatian)

Cilj istraživanja bio je istražiti održivu metodu ekstrakcije hrane visokonaponskim električnim pražnjenjem (HVED) sa zelenim otapalima za ekstrakciju bioaktivnih spojeva iz mediteranskog bilja ružmarina i origana. Teorijski alati za predviđanje korišteni su za procjenu topljivosti određenih bioaktivnih spojeva u zelenim otapalima, kako bi se smanjila potrošnja otapala tijekom eksperimentiranja. Rezultati su pokazali da je HVED vrlo učinkovita metoda zelene ekstrakcije koja može biti održiva alternativa konvencionalnim metodama ekstrakcije. Dobiveni ekstrakti stabilizirani su pomoću mikrokapsulacije koja se pokazala kao vrijedan alat za očuvanje stabilnosti polifenola u vodenim ekstraktima, pridonoseći razvoju funkcionalne hrane s prilagodljivim svojstvima.

• Keywords: high voltage electrical discharge; rosemary; oregano; bioactive compounds; green solvents; sustainability; microencapsulation
• Keywords (croatian): visokonaponsko električno pražnjenje; ružmarin; origano; bioaktivni spojevi; zelena otapala; održivost; mikroinkapslacija
• Language: english
• URN:NBN: urn:nbn:hr:159:415288
• Promotion: 2024
• Study programme: Title: Food Technology; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti (doktor/doktorica znanosti)
• Type of resource: Text
• Extent: 177 str. ; 30 cm
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-02-07 14:15:00