Effect of Irpex lacteus, Pleurotus ostreatus and Pleurotus cystidiosus pretreatment of corn stover on its improvement of the in vitro rumen fermentation

被引：31
作者：
Zuo, Sasa [1 ]
Niu, Dongze [1 ]
Zheng, Mingli [1 ]
Jiang, Di [1 ]
Tian, Pengjiao [1 ]
Li, Rongrong [1 ]
Xu, Chuncheng [1 ]
机构：
[1] China Agr Univ, Coll Engn, 17 Tsinghua East Rd, Beijing 100083, Peoples R China
来源：
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE | 2018年 / 98卷 / 11期
关键词：
white rot fungi; corn stover; in vitro gas production; lignocellulolytic enzymes; structural analysis; WHITE-ROT FUNGI; CHEMICAL-COMPOSITION; LIGNOCELLULOSIC BIOMASS; BIOLOGICAL PRETREATMENT; ENZYMATIC-HYDROLYSIS; DETERGENT FIBER; RUMINANT FEED; MAIZE STOVER; WHEAT-STRAW; DIGESTIBILITY;
D O I：
10.1002/jsfa.8951
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
BACKGROUNDThe present work investigated changes in corn stover pretreated with different white rot fungi. Corn stover was inoculated with Irpex lacteus, Pleurotus ostreatus and Pleurotus cystidiosus prior to incubation under solid-state fermentation conditions at 28 degrees C for 42days. Changes in the chemical composition, in vitro rumen degradability, lignocellulolytic enzyme activity and multi-scale structure of the corn stover were analysed. RESULTSContent of all lignocellulose components decreased to a certain extent after fungal pretreatment. The total gas production of sterilized corn stover treated with I. lacteus for 42days increased from 200 to 289mLg(-1) organic matter. Moreover, the cellulase activity was highest at the later stage of I. lacteus pretreatment. Multi-scale structural analysis indicated that white rot fungal pretreatment, and in particular that of I. lacteus, increased and enlarged substrate porosity and caused changes in the structure of corn stover. CONCLUSIONIrpex lacteus pretreatment improved the nutritional value of corn stover as a ruminant feed by degrading both cellulose and acid-insoluble lignin as well as changing the structure of the cell walls. (c) 2018 Society of Chemical Industry
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页码：4287 / 4295
页数：9
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