Bioconversion of Phenolic Monomers of Lignin and Lignin-Containing Substrates by the Basidiomycete Lentinus tigrinus


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Аннотация

The bioconversion of phenolic monomers of lignin (veratrol, vanillin, and vanillyl alcohol), hydrolyzed lignin, and sodium lignosulfonate (a product of the chemical modification of native lignin) by the basidiomycete Lentinus tigrinus was studied. It was found that the growth of the fungi on lignin monomer compounds is suppressed. A noticeable growth of the fungal biomass was observed only on the technical substrate sodium lignosulfonate. A comprehensive physicochemical study of the products of microbial transformation of sodium lignosulfonate was performed. It was established that the main direction of lignin bioconversion is oxidative condensation to form humic substances. In this case, depolymerization of the phenolic skeleton of lignin to monomeric phenol derivatives did not occur. The aromatic carbon atoms of the phenolic skeleton, unlike the carbon atoms of polysaccharides, were not involved in the fungal biomass growth. The observed growth of the fungus on the technical substrate sodium lignosulfonate can be explained by the presence of admixtures of oligomeric polysaccharides hemicellulose and cellulose, which can be used by the fungus as a carbon source.

Авторлар туралы

V. Bogdan

Zelinskii Institute of Organic Chemistry; Moscow State University

Хат алмасуға жауапты Автор.
Email: vibogdan@gmail.com
Ресей, Moscow, 119991; Moscow, 119991

Ya. Sergeeva

Kurchatov Institute National Research Center

Email: vibogdan@gmail.com
Ресей, Moscow, 123182

V. Lunin

Zelinskii Institute of Organic Chemistry; Moscow State University

Email: vibogdan@gmail.com
Ресей, Moscow, 119991; Moscow, 119991

I. Perminova

Moscow State University

Email: vibogdan@gmail.com
Ресей, Moscow, 119991

A. Konstantinov

Moscow State University

Email: vibogdan@gmail.com
Ресей, Moscow, 119991

G. Zinchenko

OOO ENVIROCAT ltd.

Email: vibogdan@gmail.com
Ресей, Moscow, 121614

K. Bogdan

Moscow State University; Landau Institute for Theoretical Physics

Email: vibogdan@gmail.com
Ресей, Moscow, 119991; Chernogolovka, Moscow oblast, 142432

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