Abstract:
:Microorganisms are the main contributing factor responsible for organic matter degradation during composting. In this research, the 454-pyrosequencing of the 16S rRNA gene was used to elucidate evolution of bacterial diversity during mesophilic, thermophilic and maturation composting stages of the two-phase olive mill waste ("alperujo"), the main by-product of the Spanish olive oil industry. Two similar piles were performance composting AL with sheep manure as bulking agent. Actinobacteria, Bacteriodetes, Firmicutes and Proteobacteria were the main phyla found in genomic libraries from each composting phase. Shannon and Chao1 biodiversity indices showed a clear difference between the mesophilic/thermophilic and maturation phases, which was mainly due to detection of new genera. PCA analysis of the relative number of sequences confirmed maturation affected bacterial population structure, and Pearson correlation coefficients between physicochemical composting parameters and relative number of genera sequences suggest that Planomicrobium and Ohtaekwangia could be considered as biomarkers for AL composting maturation.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Tortosa G,Castellano-Hinojosa A,Correa-Galeote D,Bedmar EJdoi
10.1016/j.biortech.2016.11.098subject
Has Abstractpub_date
2017-01-01 00:00:00pages
101-111eissn
0960-8524issn
1873-2976pii
S0960-8524(16)31619-4journal_volume
224pub_type
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