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Effect of Trichoderma fungi on lignin from tree species barks

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Effect of Trichoderma fungi on lignin from tree species barks

Content Provider	Springer Nature Link
Author	Ryazanova, T. V. Chuprova, N. A. Luneva, T. A.
Copyright Year	2015
Abstract	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%). Trichoderma 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 spectroscopy 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 recommended for the destruction and bleaching of wood fibers for purposes of their further industrial use (e.g., in the production of paper and bioethanol).
Starting Page	82
Ending Page	89
Page Count	8
File Format	PDF
ISSN	20700504
Journal	Catalysis in Industry
Volume Number	7
Issue Number	1
e-ISSN	20700555
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-04-09
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	larch bark birch bast lignin dioxane lignin biodegradation Trichoderma fungi Catalysis
Content Type	Text
Resource Type	Article
Subject	Catalysis

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Sorption of gelatin as a protein marker on a porous substrate of birch bark bast

Antifungal effect of bark extracts from some European tree species

Effect of Lignin on the Properties of Organic and Carbon Gels from Polyphenols of the Larch Bark

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Effect of Trichoderma fungi on lignin from tree species barks

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