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2017, vol. 21, br. 2, str. 61-65
Najnovija dostignuća u tretmanima hrane i biorafinerijskim postupcima pulsnim električnim poljem i netermalnom plazmom
aUniverzitet u Beogradu, Tehnološko-metalurški fakultet
bUniversity of Bologna, Department of Agricultural and Food Sciences, Cesena, Italy
cKarlsruhe Institute of Technology (KIT), Institute for Pulsed Power and Microwave Technology, Eggenstein-Leopoldshafen, Germany

e-adresaadjukic@tmf.bg.ac.rs
Projekat:
Project of the Serbian Ministry of Education, Science and Technological Development and the German Academic Exchange Service (DAAD): 'Integrated pulsed electric field extraction and lactic acid bacteria fermentation for the production of micro algal extracts fortified with probiotics (PEF4AlgBiotics)'

Ključne reči: pulsno električno polje; netermalna plazma; prerada hrane; otpadne vode; mikroalge; mikrobna inaktivacija
Sažetak
U toku poslednjih nekoliko decenija tretman pulsnim električnim poljem dobija sve više na značaju u oblasti biotehnologije i proizvodnje hrane. Izlaganjem humanih, biljnih ili mikrobnih ćelija pulsnom električnom polju povećava se pemeabilnost i provodljivost ćelijske membrane što vodi stvaranju pora u membrani, pa se ovaj fenomen naziva elektroporacija. Elektroporacija može biti veoma korisna tehnika za unapređenje ekstrakcije ili sušenja u oblasti proizvodnje i prerade hrane (ekstrakcija šećera iz šećerne repe, unapređenje osmotskog sušenja, sušenja smrzavanjem itd.), ali i u biorafinerijskim postupcima poput ekstrakcije vrednih supstanci iz mikroalgi, iskorišćenja otpadnih voda, ekstrakcije iz biljne biomase, itd.Kao rezultat tretmana netermalnom plazmom nastaju slobodni radikali u uzorku koji dovode do oštećenja ćelija, uključujući ćelijske membrane, smanjenjuje se pH vrednost u medijumu, a UV zračenje izvora plazme može dodatno uticati na mikrobnu inaktivaciju u tretiranom uzorku. Zato se tretman netermalnom plazmom može efikasno koristiti za sterilizaciju površina i mikrobnu inaktivaciju u voćnim sokovima u prehrambenoj industriji, biodekontaminaciju složenih otpadnih supstrata ili mikrobnu inaktivaciju u otpadnim vodama kako bi se unapredili postupci otvorene fermentacije.U ovom radu su detaljnije predstavljene mogućnosti ptimene pulsnog električnog polja u tretmanu hrane, ektrakciji mikroalgi i smanjenju problema širenja multirezistentnih bakterija iz otpadnih voda iz bolnica. Takođe, analizirane su neke mogućnosti primene tretmana netermalnom plazmom u biodekontaminaciji otpadnih voda, kao i ekonomski i ekološki aspekti ovih novih tehnika u odnosu na konvencionalne postupke.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.5937/JPEA1702061D
objavljen u SCIndeksu: 12.06.2017.

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