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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

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Record number 509173
Title Selective ligninolysis of wheat straw and wood chips by the white-rot fungus Lentinula edodes and its influence on in vitro rumen degradability
Author(s) Kuijk, S.J.A. van; Rio, José C. del; Rencoret, Jorge; Gutiérrez, Ana; Sonnenberg, A.S.M.; Baars, J.J.P.; Hendriks, W.H.; Cone, J.W.
Source Journal of Animal Science and Biotechnology 7 (2016). - ISSN 1674-9782 - 14 p.
DOI https://doi.org/10.1186/s40104-016-0110-z
Department(s) Animal Nutrition
WUR PB Paddenstoelen
WIAS
Publication type Refereed Article in a scientific journal
Publication year 2016
Abstract Background: The present work investigated the influence of lignin content and composition in the fungal
treatment of lignocellulosic biomass in order to improve rumen degradability. Wheat straw and wood chips,
differing in lignin composition, were treated with Lentinula edodes for 0, 2, 4, 8 and 12 wk and the changes
occurring during fungal degradation were analyzed using pyrolysis-gas chromatography-mass spectrometry
and detergent fiber analysis.
Results: L. edodes preferentially degraded lignin, with only limited cellulose degradation, in wheat straw and
wood chips, leaving a substrate enriched in cellulose. Syringyl (S)-lignin units were preferentially degraded than
guaiacyl (G)-lignin units, resulting in a decreased S/G ratio. A decreasing S/G ratio (wheat straw: r = −0.72, wood
chips: r = −0.75) and selective lignin degradation (wheat straw: r = −0.69, wood chips: r = −0.88) were correlated
with in vitro gas production (IVGP), a good indicator for rumen degradability.
Conclusions: L. edodes treatment increased the IVGP of wheat straw and wood chips. Effects on IVGP were
similar for wheat straw and wood chips indicating that lignin content and 3D-structure of cell walls influence
in vitro rumen degradability more than lignin composition.
Keywords: Fungal treatment, In vitro rumen degradability, Lignocellulosic biomass, Py-GC/MS
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