Two-phase olive mill waste composting: Community dynamics and functional role of the resident microbiota

Federici, Ermanno; Pepi, Milva; Esposito, Alessandro; Scargetta, S.; Fidati, Laura; Gasperini, Simone; Cenci, Giovanni; Altieri, Roberto

doi:10.1016/j.biortech.2011.09.062

Cited by 50 publications

(23 citation statements)

References 30 publications

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“…In order to calculate the fungal CFU, samples were plated on potato dextrose agar (PDA) (Oxoid, Unipath Ltd., Basingstoke, England), added with streptomycin sulphate (0.01 g L −1 ). Mesophilic and thermophilic bacteria were cultivated on Plate Count Agar-PCA at 30 • C and 55 • C for 72 h, respectively (Federici et al, 2011).…”

Section: Compost Productionmentioning

confidence: 99%

On farm production of compost from nursery green residues and its use to reduce peat for the production of olive pot plants

Aleandri

Chilosi

Muganu

et al. 2015

Scientia Horticulturae

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Section: Compost Productionmentioning

confidence: 99%

On farm production of compost from nursery green residues and its use to reduce peat for the production of olive pot plants

Aleandri

Chilosi

Muganu

et al. 2015

Scientia Horticulturae

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“…The biological decomposition of organic matter is performed by mesophilic and thermophilic microbial consortia with distinct physiological requirements and tolerances, consistent with the continuously changing environment throughout composting34567. Bacterial phyla including Proteobacteria, Firmicutes, Bacteroidetes and Actinobacteria are routinely found in composting, being more or less abundant depending on the starting materials and the composting procedure14789101112.…”

mentioning

confidence: 98%

Microbial community structure and dynamics in thermophilic composting viewed through metagenomics and metatranscriptomics

Antunes

Martins

Pereira

et al. 2016

Sci Rep

202

116

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Composting is a promising source of new organisms and thermostable enzymes that may be helpful in environmental management and industrial processes. Here we present results of metagenomic- and metatranscriptomic-based analyses of a large composting operation in the São Paulo Zoo Park. This composting exhibits a sustained thermophilic profile (50 °C to 75 °C), which seems to preclude fungal activity. The main novelty of our study is the combination of time-series sampling with shotgun DNA, 16S rRNA gene amplicon, and metatranscriptome high-throughput sequencing, enabling an unprecedented detailed view of microbial community structure, dynamics, and function in this ecosystem. The time-series data showed that the turning procedure has a strong impact on the compost microbiota, restoring to a certain extent the population profile seen at the beginning of the process; and that lignocellulosic biomass deconstruction occurs synergistically and sequentially, with hemicellulose being degraded preferentially to cellulose and lignin. Moreover, our sequencing data allowed near-complete genome reconstruction of five bacterial species previously found in biomass-degrading environments and of a novel biodegrading bacterial species, likely a new genus in the order Bacillales. The data and analyses provided are a rich source for additional investigations of thermophilic composting microbiology.

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“…The results showed that the highest activity of the thermophilic bacteria was observed at 60˚C. As it is indicated by [15], the mesophiles which are abundant in the early phase of the process were the primary active degraders of the fresh organic waste, while thermophiles stimulated by the rapid increase of temperature occurring during the thermophilic phase, drove the degradation of more recalcitrant molecules such as lignocellulosic materials [15]. [16] also studied microbial succession during composting and reported that in the early stage of composting, thriving bacteria growth is responsible for the initial decomposition of organic matter and the generation of heat.…”

Section: Microbial Populationmentioning

confidence: 70%

Assessment of Microbial Communities and Their Relationship with Enzymatic Activity during Composting

Kazemi¹,

Zhang²,

Lye³

2017

WJET

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Microbial communities and enzyme activities are the main players during municipal solid waste (MSW) composting, but the relationship between microbial communities (i.e., mesophilic and thermophilic ones) and enzyme activities (i.e., dehydrogenase, β-glucosidase, phosphatase and urea) has not been well studied. Therefore, the objective of this work is to determine the enzymes profiles during municipal solid waste (MSW) composting and study the relationship between the mesophilic and thermophilic microbial profiles and enzyme activities. MSW was composted in a bench-scale composting reactor. Parameters including temperature, oxygen uptake rate, numbers of microbial populations (mesophilic and thermophilic bacteria and fungi) and enzyme activities were measured. Results showed higher dehydrogenase activities are related to higher numbers of mesophilic bacteria, while higher phosphatase and urea activities are associated with higher numbers of thermophilic fungi and mesophilic bacteria at the later stage of composting. In addition, results of the correlation analysis indicated significant correlations among enzyme activities and microbial population.

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Two-phase olive mill waste composting: Community dynamics and functional role of the resident microbiota

Cited by 50 publications

References 30 publications

On farm production of compost from nursery green residues and its use to reduce peat for the production of olive pot plants

On farm production of compost from nursery green residues and its use to reduce peat for the production of olive pot plants

Microbial community structure and dynamics in thermophilic composting viewed through metagenomics and metatranscriptomics

Assessment of Microbial Communities and Their Relationship with Enzymatic Activity during Composting

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