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

作     者：Sandra J.A.van Kuijk José C.del Río Jorge Rencoret Ana Gutiérrez Anton S.M.Sonnenberg Johan J.P.Baars Wouter H.Hendriks John W.Cone 

作者机构：Animal Nutrition GroupWageningen UniversityDe Elst 16708 WD WageningenThe Netherlands Instituto de Recursos Naturales y Agrobiologica de Sevilla(IRNAS-CSIC)Avenida Reina Mercedes1042012 SevilleSpain Plant BreedingWageningen UniversityDroevendaalsesteeg 16708 PB WageningenThe Netherlands 

出 版 物：《Journal of Animal Science and Biotechnology》 (畜牧与生物技术杂志（英文版）)

年 卷 期：2017年第8卷第2期

页      面：391-404页

核心收录：

学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 09[农学] 

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) 

主　　题：Fungal treatment In vitro rumen degradability Lignocellulosic biomass Py GC/MS 

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 ***： 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 ***： 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.