WOOD-DESTROYING PROPERTIES OF PORODAEDALEA NIEMELA M. FISCHER AND TRICHODERMA ATRO-VIRIDE BISSETT FROM PERMAFROST AREA
Presents the results of a research of wood-destroying properties Porodaedalea niemelaei M. Fischer and Trichoderma atroviride Bissett. The strains were isolated in pure culture from the fruiting body and larch wood (Larix gmelinii (Rupr.) Rupr.) in permafrost. Studied phenol oxidase activity and bio...
Published in: | chemistry of plant raw material |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | Russian |
Published: |
Altai State University
2017
|
Subjects: | |
Online Access: | http://journal.asu.ru/cw/article/view/1577 https://doi.org/10.14258/jcprm.2017011577 |
Summary: | Presents the results of a research of wood-destroying properties Porodaedalea niemelaei M. Fischer and Trichoderma atroviride Bissett. The strains were isolated in pure culture from the fruiting body and larch wood (Larix gmelinii (Rupr.) Rupr.) in permafrost. Studied phenol oxidase activity and biodegradation of waste wood at their solid-state fermentation. Under laboratory conditions, fungi colonize deciduous and coniferous substrates in monoculture and co-culture. Bioconversion depends on the enzymatic activity of strains and chemical characteristics of the growth substrate. Maximum of wood-destroying activity observed in strain PnB-13 Porodaedalea niemelaei on sawdust of aspen. The loss of weight of the substrate was 39%; polysaccharide content decreased to 1,6 times in comparison with the initial substrate; lignin – in 1.2 times. The concentration of water-soluble substances increased 1,5 times. P. niemelaei and T. atroviride produce extracellular oxidase of lignolytic complex in the solid-phase cultivation of plant residues. Enzyme activity was 0,15–0,22 u/g∙s on sawdust of larch and 0,14–0,18 u/g∙s on sawdust of aspen, which is comparable to the phenol oxidase activity of other xylotrophic basidiomycetes (Trametes versicolor, Armillaria mellea s.l., Heterobasidion parviporum). Представлены результаты исследования дереворазрушающих свойств макроскопического гриба Porodaedalea niemelaei M. Fischer и микромицета Trichoderma atroviride Bissett, выделенных в чистую культуру соответственно из плодового тела и древесины Larix gmelinii (Rupr.) Rupr., обнаруженных в высоких широтах на северном пределе произрастания древесных растений. Изучена динамика фенолоксидазной активности штаммов и биоконверсия растительных отходов лесопереработки при их твердофазной ферментации. Исследуемые грибы в лабораторных условиях колонизируют лиственные и хвойные субстраты в моно- и совместной культуре; степень биодеструкции зависит от ферментативной активности культуры и химических особенностей ростового субстрата. Максимальная ... |
---|