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      Dynamics of bacterial microbiota during lignocellulosic waste composting: Studies upon its structure, functionality and biodiversity.

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          Abstract

          An intensive isolation program carried out in three replicated composting piles allowed the identification of the resident and transient components of the composting microbiome. More than 4000 bacterial strains were isolated, enzymatically characterized and identified by partial sequencing of their 16S rRNA gene. While microorganisms isolated under mesophilic conditions were prominent throughout the process, thermophilic stages gathered the highest total counts and spore-forming bacteria prevailed at the bio-oxidative phase of composting. Enzymatic capabilities related to the degradation of polymeric materials were exhibited by most of the isolates and as a result of these activities, more soluble compounds could be made available to the entire composting microbiota. A high proportion of isolates showed to be thermotolerant as they were detected at mesophilic and thermophilic phases. Isolated strains belonged to 187 bacterial species. Biodiversity was greater at the central stages of composting and mesophilic, thermophilic and cooling phases shared 50% of species.

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          Author and article information

          Journal
          Bioresour. Technol.
          Bioresource technology
          Elsevier BV
          1873-2976
          0960-8524
          Jan 2015
          : 175
          Affiliations
          [1 ] Unit of Microbiology, Department of Biology and Geology, University of Almería, Agrifood Campus of International Excellence ceiA3, 04120 Almería, Spain.
          [2 ] Unit of Microbiology, Department of Biology and Geology, University of Almería, Agrifood Campus of International Excellence ceiA3, 04120 Almería, Spain. Electronic address: jcasco@ual.es.
          Article
          S0960-8524(14)01555-7
          10.1016/j.biortech.2014.10.123
          25459849
          5bcbda8d-1556-4c44-9b50-7b33a1f51af4
          History

          Composting bacterial community,Composting biodiversity,Composting microbiome,Enzymatic functionality,Resident and transient microbiota

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