Enrichment of thermophilic and mesophilic microbial consortia for efficient degradation of corn stalk

作     者：Jun Lu Zhiman Yang Wanying Xu Xiaoshuang Shi Rongbo Guo 

作者机构：Shandong Industrial Engineering Laboratory of Biogas Production & UtilizationQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences University of Chinese Academy of Sciences 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2019年第31卷第4期

页      面：118-126页

核心收录：

学科分类：082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 09[农学] 0903[农学-农业资源与环境] 

基　　金：supported by the National Natural Science Foundation of China (No. 41773102) the Key Research & Development Project of Shandong (No. 2017GSF217007) the Key Technological Innovation Project of Shandong (No. 2017CXGC0305) 

主　　题：Corn stalk Lignocellulose degradation Microbial consortium Bacterial community structure 

摘      要：Six different environmental samples were applied to enrich microbial consortia for efficient degradation of corn stalk,under the thermophilic and mesophilic *** consortium obtained from anaerobic digested sludge under thermophilic condition(TC-Y)had the highest lignocellulose-degrading *** CO_2yield was 246.73 m L/g VS in23 days,meanwhile,the maximum CO_2production rate was 15.48 mL/(CO_2·d),which was28.75%and 52.27%higher than that under mesophilic condition,*** peak value of cellulase activity reached 0.105 U/mL,which was at least 34.61%higher than the other *** addition,49.5%of corn stalk was degraded in 20 days,moreover,the degradation ratio of cellulose,hemicellulose and lignin can reach 52.76%,62.45%and42.23%,*** consortium structure analysis indicated that the TC-Y contained the phylum of Gemmatimonadetes,Acidobacteria,Chloroflexi,Planctomycetes,Firmicutes,and ***,the Pseudoxanthomonas belonging to GammaProteobacteria might be the key bacterial group for the lignocellulose *** results indicated the capability of degrading un-pretreated corn stalk and the potential for further investigation and application of TC-Y.