Induction of wheat straw delignification by Trametes species
메타 데이터
바이오화학분류
바이오플라스틱
기타
바이오정밀화학
기타
화장품용 기능성소재
기타
의료용 화학소재
식품첨가제
논문
Induction of wheat straw delignification by Trametes species
학술지
Scientific reports
저자명
Knež ević , Aleksandar; Stajić , Mirjana; Jovanović , Vladimir M.; Kovač ević , Viš nja; Ć ilerdž ić , Jasmina; Milovanović , Ivan; Vukojević , Jelena
초록
<P>Wheat straw is the major crop residue in European countries which makes it the most promising material for bioconversion into biofuels. However, cellulose and hemicellulose are protected with lignin, so delignification is an inevitable phase in lignocellulose processing. The organisms predominantly responsible for its degradation are white-rot fungi and among them <I>Trametes</I> species represent promising degraders due to a well-developed ligninolytic enzyme system. Although numerous studies have confirmed that low molecular weight compounds can induce the production and activity of ligninolytic enzymes it is not clear how this reflects on the extent of delignification. The aim of the study was to assess the capacity of <I>p</I>-anisidine and veratryl alcohol to induce the production and activity of Mn-oxidizing peroxidases and laccases, and wheat straw delignification by six <I>Trametes</I> species. Significant inter- and intraspecific variations in activity and features of these enzymes were found, as well as differences in the potential of lignocellulose degradation in the presence or absence of inducers. Differences in the catalytic properties of synthesized enzyme isoforms strongly affected lignin degradation. Apart from enhanced lignin degradation, the addition of <I>p</I>-anisidine could significantly improve the selectivity of wheat straw ligninolysis, which was especially evident for <I>T. hirsuta</I> strains.</P>