title: Changes of microbial population structure related to lignin degradation during lignocellulosic waste composting.
abstract: Microbial populations and their relationship to bioconversion during lignocellulosic waste composting were studied by quinone profiling. Nine quinones were observed in the initial composting materials, and 15 quinones were found in compost after 50days of composting. The quinone species Q-9(H2), Q-10 and Q-10(H2) which are indicative of certain fungi appeared at the thermophilic stage but disappeared at the cooling stage. Q-10, indicative of certain fungi, and MK-7, characteristic of certain bacteria, were the predominant quinones during the thermophilic stage and were correlated with lignin degradation at the thermophilic stage. The highest lignin degradation ratio (26%) and good cellulose degradation were found at the cooling stage and were correlated with quinones Q-9, MK-7 and long-chain menaquinones attributed to mesophilic fungi, bacteria and actinomycetes, respectively. The present findings will improve the understandings of microbial dynamics and roles in composting, which could provide useful references for development of composting technology.
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
authors.forename: Dan-Lian
authors.initials: DL
authors.lastname: Huang
authors.forename: Guang-Ming
authors.initials: GM
authors.lastname: Zeng
authors.forename: Chong-Ling
authors.initials: CL
authors.lastname: Feng
authors.forename: Shuang
authors.initials: S
authors.lastname: Hu
authors.forename: Cui
authors.initials: C
authors.lastname: Lai
authors.forename: Mei-Hua
authors.initials: MH
authors.lastname: Zhao
authors.forename: Feng-Feng
authors.initials: FF
authors.lastname: Su
authors.forename: Lin
authors.initials: L
authors.lastname: Tang
authors.forename: Hong-Liang
authors.initials: HL
authors.lastname: Liu
mesh_terms: D001419:Bacteria / Q000302:isolation & purification* / Q000378:metabolism; D002482:Cellulose / Q000378:metabolism*; D005658:Fungi / Q000302:isolation & purification* / Q000378:metabolism; D006868:Hydrolysis; D008031:Lignin / Q000378:metabolism*; D012987:Soil
chemical_list: D012987:Soil; D002482:Cellulose; D008031:Lignin