Improvement of efficiency of brown coal biosolubilization by novel recombinant Fusarium oxysporum laccase.

Abstract:

:Clean coal technologies (e.g. coal biosolubilization) are of essential value, especially in Europe, where coal is the national wealth and other energy sources like crude oil are not available. Fusarium oxysporum LOCK 1134, the strain isolated from brown coal, efficiently biosolubilizes lignite. The obtained liquefied products contain 50% less sulfur and over 99% less mercury than the crude coal. Moreover, the liquefied coal can be modified further by laccase. In this study F. oxysporum laccase was expressed in Pichia pastoris for the first time and was assessed as an additional agent for coal degradation. The novel laccase contributes to humic and fulvic acids release from liquefied coal due to introduction of oxygen into coal structure. The effect is increased when a natural redox mediator, sinapic acid, is present in the reaction mixture-up to 30% and 80% respectively. Humic acids obtained by biological process are environmentally friendly fertilizers that may have stimulating effects on crop growth.

journal_name

AMB Express

journal_title

AMB Express

authors

Kwiatos N,Jędrzejczak-Krzepkowska M,Strzelecki B,Bielecki S

doi

10.1186/s13568-018-0669-1

subject

Has Abstract

pub_date

2018-08-22 00:00:00

pages

133

issue

1

issn

2191-0855

pii

10.1186/s13568-018-0669-1

journal_volume

8

pub_type

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