Lignocellulose bioconversion to ethanol by a fungal single-step consolidated method tested with waste substrates and co-culture experiments

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Mattila , H K , Kačar , D , Mali , T L E & Lundell , T K 2018 , ' Lignocellulose bioconversion to ethanol by a fungal single-step consolidated method tested with waste substrates and co-culture experiments ' , AIMS Energy , vol. 6 , no. 5 , pp. 866-879 . https://doi.org/10.3934/energy.2018.5.866

Title: Lignocellulose bioconversion to ethanol by a fungal single-step consolidated method tested with waste substrates and co-culture experiments
Author: Mattila, Hans Kristian; Kačar, Dina; Mali, Tuulia Leena Elina; Lundell, Taina Kristina
Contributor: University of Helsinki, Fungal Co-life, Omics and Ecophysiology Research Group
University of Helsinki, Department of Microbiology
University of Helsinki, Department of Microbiology
Date: 2018-10-18
Language: eng
Number of pages: 14
Belongs to series: AIMS Energy
ISSN: 2333-8326
URI: http://hdl.handle.net/10138/298830
Abstract: The Polyporales phlebioid white rot fungus Phlebia radiata is efficient in decomposing the wood main components, and in producing ethanol from lignocelluloses and waste materials. Based to these qualifications, the fungus was adopted for design of a consolidated bioprocess method to convert wood waste materials into ethanol without pretreatments. Higher ethanol yield was aimed by introducing collaborative fungal cultivations including isolates of Saccharomyces cerevisiae, other yeasts, and a brown rot fungus. Various waste lignocellulose materials such as wheat and barley straw, recycled wood-fiber based core board, recycled construction waste wood, spruce saw dust, and birch wood were applied to represent wood and non-wood waste lignocellulose of different origin, chemical content and structure. In solid-state single cultivations with the white rot fungus P. radiata, both core board and barley straw turned out as suitable substrates for the consolidated bioprocess. Up to 32.4 ± 4.5 g/L of ethanol accumulated in the solid-state core board cultivation in 30 days whereas with barley straw, 7.0 ± 0.01 g/L of ethanol was obtained. Similar concentrations of ethanol were produced in increased-volume and higher gravity bioreactor cultivations without chemical, physical or enzymatic pretreatment. In all, our consolidated method adopting a white rot fungus is a promising and economic alternative for second generation bioethanol production from waste and residual lignocelluloses.
Subject: 414 Agricultural biotechnology
Bioethanol
Bioconversion
Fungal biotechnology
Waste biomass
1183 Plant biology, microbiology, virology
Microbiology
Mycology
Phlebia radiata 79
consolidated bioprocess
bioethanol
white rot fungi
waste lignocellulose
bioconversion
solid state cultivation
bioreactor
BIOETHANOL PRODUCTION
ENZYMATIC-HYDROLYSIS
PRETREATMENT
PERSPECTIVES
INSIGHT
BIOMASS
STRAW
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