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Novikova, L. N.; Медведева, С. А.; Volchatova, I. V.; Bogatyreva, S. A.

doi:10.1023/a:1014322919377

Cited by 9 publications

(1 citation statement)

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“…The ability to thoroughly degrade and assimilate lignin is pronounced in basidiomycetes [8][9][10][11][12]; there is evidence of micromycetes (e.g. Aspergillus and Pen icillium fungi) participating in the transformation of lignin [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of Trichoderma fungi on lignin from tree species barks

2015

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The effect the micromycete enzymatic complex has on the lignin component in tree species barks is studied using the example of Trichoderma fungi. The MG-97/6 Trichoderma asperellum Samuels VKPM F 765 strain is used as the biological object of study. The substrates are Siberian larch bark, European white birch bast, and preparations of dioxane lignin isolated from larch bark and birch bast according to Pepper's method, i.e., via treatment with a dioxane-water mixture (9 : 1) in the presence of HCl (0.7%). Tricho derma fungi are cultivated in Petri dishes placed in a thermostat for 10 days under conditions of 25-27°C, 80 % humidity, and pH 6.5. The substrate is inoculated with a mycelial suspension of the fungi in the amount of 1 × 10 6 spores per 1 g of the substrate (oven dry weight). Chemical analysis, UV spectroscopy, and IR spec troscopy are used to show that the micromycete enzyme complex induces destructive changes in lignin, both in situ and in vitro. A scheme for the oxidative degradation of wood substrate lignins by the T. asperellum MG 97/6 fungi is proposed. Microbial decomposition of lignin can be recommended for the preparation of such Trichodermin biological products, using lignin containing wastes as substrates. It can also be recom mended for the destruction and bleaching of wood fibers for purposes of their further industrial use (e.g., in the production of paper and bioethanol).

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Section: Introductionmentioning

confidence: 99%