当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Recombinant Lentinula edodes xylanase improved the hydrolysis and in vitro ruminal fermentation of soybean straw by changing its fiber structure.

Recombinant Lentinula edodes xylanase improved the hydrolysis and in vitro ruminal fermentation of soybean straw by changing its fiber structure.

Abstract：

:Soybean straw cannot be efficiently degraded and utilized by ruminants due to the complex cross-linked structure among cellulose, hemicellulose, and lignin in its cell wall. Xylanase can degrade the xylan component of hemicellulose, destroy the xylan-lignin matrix and, consequently, would theoretically improve the hydrolysis effectiveness of cellulose. Therefore, this study was performed to investigate the effects of recombinant Lentinula edodes xylanase (rLeXyn11A) on fiber structure, hydrolysis, and in vitro ruminal fermentation of soybean straw. Treatment with rLeXyn11A enhanced the hydrolysis of soybean straw with an evident increase in productions of ribose, rhamnose, and xylose. Soybean straw treated by rLeXyn11A had lower hemicellulose content and greater cellulose and lignin contents. The rLeXyn11A could remove xylan, loosen unordered fibrous networks, enhance substrate porosity, and rearrange lignin, consequently increasing the exposure of cellulose and improving the cellulase hydrolysis of soybean straw. Supplemental rLeXyn11A stimulated the dry matter digestion, volatile fatty acids production, and microbial protein synthesis during in vitro ruminal incubation. This paper demonstrated that rLeXyn11A could strengthen the cellulase hydrolysis and in vitro ruminal fermentation of soybean straw by degrading xylan and changing fiber structure, showing its potential for improving the utilization of soybean straw in ruminants.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Zhang W,Pan K,Liu C,Qu M,OuYang K,Song X,Zhao X

doi

10.1016/j.ijbiomac.2020.02.187

subject

Has Abstract

pub_date

2020-05-15 00:00:00

pages

286-292

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(19)40421-2

journal_volume

151

pub_type

杂志文章

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