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2021, vol. 25, br. 2, str. 74-77
Predtretman lignocelulozne biomase pomoću autohtonih gljiva Srbije
aUniverzitet u Beogradu, Tehnološko-metalurški fakultet
bUniverzitet u Novom Sadu, Tehnološki fakultet

e-adresayowitch@gmx.com
Projekat:
Research presented in this paper was funded by the Ministry of Education, Science and Technological Development, Republic of Serbia (Project #I1)(Title: Development of new biological processes in the valueadded utilization of agro-industrial waste) of the Scientific and Technological Collaboration of the Republic of Serbia and PR China.

Ključne reči: autohtone gljive; lignoceluloza; lakaza; mangan peroksidaza; celulaza; ksilanaza
Sažetak
Predtretman gljivama se poslednjih godina intenzivno istražuje za biološku razgradnju lignoceluloze zbog prisustva enzima sposobnih da raskinu interi intrapolimerne veze u ovom supstratu i tako ga razgrade do fermentabilnih šećera. U ovom istraživanju su izolovane autohtone lignocelulolitičke gljive Srbije među kojima su odabrani i identifikovani izolati koji bi se mogli primenjivati u predtretmanu otpadne lignocelulozne biomase. Među 12 uspešno izolovanih gljiva, visokom ligninolitičkom aktivnošću su se istakli izolati identifikovani kao Trametes hirsuta F13 i Stereum gausapatum F28, dok je izolat identifikovan kao Myrmaecium fulvopruinatum F14 ispoljio visoku hidrolitičku aktivnost, ali zanemarljivu ligninolitičku aktivnost zbog čega nije razmatran kao potencijalni kandidat za primenu u predtretmanu, ali jeste razmatran kao proizvođač industrijski važnih hidrolitičkih enzima. U daljem radu ispitan je potencijal razgradnje lignoceluloznog otpada - piljevine bukve - pomoću T. hirsuta F13 i S. gausapatum F28. Oba izolata su efikasno razgradila biomasu, ali je T. hirsuta F13 ispoljio veću selektivnost (koeficijent selektivnosti 1,7) nego izolat S. gausapatum F28 (1,1) - brže razgradio lignin nego celulozu - pa se smatra boljim kandidatom za predtretman. Kako je bitno da predtretman bude ekonomičan, za unapređenje je korišćena melasna džibra, otpad iz industrije alkohola. Dodatak melasne džibre je skratio vreme predtretmana i unapredio selektivnost razgranje lignocelulozne biomase izolatom T. hirsuta F13 - nakon 18 dana koeficijent selektivnosti je bio 1,9 uz dodatak melasne džibre i 1,7 bez dodatka melasne džibre.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.5937/jpea25-31108
primljen: 01.03.2021.
prihvaćen: 07.05.2021.
objavljen u SCIndeksu: 05.06.2021.

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