title: Improving methane production in cow dung and corn straw co-fermentation systems via enhanced degradation of cellulose by cabbage addition.
abstract: The effects of cabbage waste (CW) addition on methane production in cow dung and corn straw co-fermentation systems were investigated. Four experimental groups, each containing 55 g of substrate, were set up as follows: 100% cow dung (C); 36% cabbage and 64% cow dung (CC); 36% straw and 64% cow dung (SC); and 18% cabbage, 18% straw, and 64% cow dung (CSC). After seven days of fermentation, the maximum methane yield was 134 mL in the CSC group, which was 2.81-fold, 1.78-fold, and 1340-fold higher than that obtained in the CC, SC, and C groups, respectively. CW treatment of the CSC group enhanced cellulase activity and enriched culturable cellulose-degrading bacterial strains. Miseq sequencing data revealed that the predominant phylum in the CSC group was Bacteroidetes, which contains most of the cellulose-degrading bacteria. Our results suggested that CW treatment elevated cellulose degradation and promoted methane production.
authors.affiliation: MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China.
authors.forename: Wenyang
authors.initials: W
authors.lastname: Wu
authors.affiliation: MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
authors.affiliation: MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China.
authors.forename: Shah
authors.initials: S
authors.lastname: Faisal
authors.affiliation: MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China.
authors.forename: Aman
authors.initials: A
authors.lastname: Khan
authors.affiliation: MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China.
authors.forename: Zhengjun
authors.initials: Z
authors.lastname: Chen
authors.affiliation: MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China.
authors.forename: Zhenmin
authors.initials: Z
authors.lastname: Ling
authors.affiliation: MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China.
authors.forename: Pu
authors.initials: P
authors.lastname: Liu
authors.affiliation: MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China.
authors.forename: Xiangkai
authors.initials: X
authors.lastname: Li
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D001419:Bacteria / Q000145:classification / Q000235:genetics / Q000378:metabolism; D001673:Biodegradation, Environmental; D044822:Biodiversity; D001937:Brassica; D002417:Cattle; D002480:Cellulase / Q000378:metabolism; D002482:Cellulose; D005285:Fermentation; D008697:Methane / Q000096:biosynthesis*; D013997:Time Factors; D014866:Waste Products; D003313:Zea mays
chemical_list: D014866:Waste Products; D002482:Cellulose; D002480:Cellulase; D008697:Methane