Selective ligninolysis of wheat straw and wood chips by the white-rot fungus Lentinula edodes and its influence on in vitro rumen degradability

查看全文 作　　者：Sandra J.A.van [1]Kuijk;José C.del [2]Río;Jorge [2]Rencoret;Ana [2]Gutiérrez;Anton [3]S.M.Sonnenberg;Johan [3]J.P.Baars;Wouter [1]H.Hendriks;John [1]W.Cone

机构地区：[1]Animal Nutrition Group,Wageningen University,De Elst 1,6708 WD Wageningen,The Netherlands;[2]Instituto de Recursos Naturales y Agrobiologica de Sevilla(IRNAS-CSIC),Avenida Reina Mercedes,10,42012 Seville,Spain;[3]Plant Breeding,Wageningen University,Droevendaalsesteeg 1,6708 PB Wageningen,The Netherlands

出　　处：《Journal of Animal Science and Biotechnology》索引2017年第8卷第2期,共14页

基　　金：funded by Dutch Technology Foundation(STW),which is part of the Netherlands Organization for Scientific Research(NWO);partially funded by the Spanish projects AGL2011-25379,AGL2014-53730-R and CTQ2014-60764-JIN(co-financed by FEDER funds);the CSIC project 2014-40E-097;the EU-project INDOX(KBBE-2013-7-613549) 摘　　要：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. 关键词：瘤胃降解率小麦秸秆木屑香菇体外白腐真菌裂解气相色谱-质谱法木质素含量

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Selective ligninolysis of wheat straw and wood chips by the white-rot fungus Lentinula edodes and its influence on in vitro rumen degradability

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