Biological Modification of Montan Resin from Lignite by Bacillus benzoevorans

Wang, Huanhong; Qin, Yi; Li, Baocai; Cheng, Xiang; Dai, Wenwen; Jiao, Shiyun; Zhang, Mi

doi:10.1007/s12010-019-02962-x

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…5 ), such as the dye-decolourizing peroxidase producers T. curvata , Thermobifida cellulosilytica and Mycobacterium thermoresistible, the lignin-peroxidase producer Ochrobactrum intermedium ( Azizi-Shotorkhoft et al, 2016 ; Tian et al, 2016 ) , as well as B. borstelensis, B. thermoruber , Comamonas testosteroni and Ureibacillus thermosphaericus which can produce both peroxidases and laccases ( File S2 ) ( Ndahebwa Muhonja et al., 2018 ; Niu et al, 2021 ; Rashid et al, 2017 ). Putative lignin degraders were also concentrated in the early composting stages, with those present in Litter, C. testosteroni , Gordonia paraffinivorans and M. thermoresistible, rapidly depleted or lost during thermophilic phases where thermophilic Bacillus benzoevorans ( Wang et al, 2019 ), B. borstelensis, B. thermoruber , O. intermedium, T. curvata and U . terrenus increased.…”

Section: Discussionmentioning

confidence: 99%

Dynamics of bacterial and archaeal communities during horse bedding and green waste composting

Grenier

González

Brereton

et al. 2023

PeerJ

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Organic waste decomposition can make up substantial amounts of municipal greenhouse emissions during decomposition. Composting has the potential to reduce these emissions as well as generate sustainable fertilizer. However, our understanding of how complex microbial communities change to drive the chemical and biological processes of composting is still limited. To investigate the microbiota associated with organic waste decomposition, initial composting feedstock (Litter), three composting windrows of 1.5 months (Young phase), 3 months (Middle phase) and 12 months (Aged phase) old, and 24-month-old mature Compost were sampled to assess physicochemical properties, plant cell wall composition and the microbial community using 16S rRNA gene amplification. A total of 2,612 Exact Sequence Variants (ESVs) included 517 annotated as putative species and 694 as genera which together captured 57.7% of the 3,133,873 sequences, with the most abundant species being Thermobifida fusca, Thermomonospora chromogena and Thermobifida bifida. Compost properties changed rapidly over time alongside the diversity of the compost community, which increased as composting progressed, and multivariate analysis indicated significant variation in community composition between each time-point. The abundance of bacteria in the feedstock is strongly correlated with the presence of organic matter and the abundance of plant cell wall components. Temperature and pH are the most strongly correlated parameters with bacterial abundance in the thermophilic and cooling phases/mature compost respectively. Differential abundance analysis revealed 810 ESVs annotated as species significantly varied in relative abundance between Litter and Young phase, 653 between the Young and Middle phases, 1182 between Middle and Aged phases and 663 between Aged phase and mature Compost. These changes indicated that structural carbohydrates and lignin degrading species were abundant at the beginning of the thermophilic phase, especially members of the Firmicute and Actinobacteria phyla. A high diversity of species capable of putative ammonification and denitrification were consistently found throughout the composting phases, whereas a limited number of nitrifying bacteria were identified and were significantly enriched within the later mesophilic composting phases. High microbial community resolution also revealed unexpected species which could be beneficial for agricultural soils enriched with mature compost or for the deployment of environmental and plant biotechnologies. Understanding the dynamics of these microbial communities could lead to improved waste management strategies and the development of input-specific composting protocols to optimize carbon and nitrogen transformation and promote a diverse and functional microflora in mature compost.

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Section: Discussionmentioning

confidence: 99%

Dynamics of bacterial and archaeal communities during horse bedding and green waste composting

Grenier

González

Brereton

et al. 2023

PeerJ

View full text Add to dashboard Cite

show abstract

“…Exploiting the apparent oil/water partition coefficient of PNS [31] , GBR, STF, PBS (pH 6.8), water, and octanol were mixed in equal amounts and placed in a conical flask, stirred at room temperature for 24 h, and allowed to stand overnight. After phase separation, octanol saturated with water (upper layer) was obtained as the oil phase, and water-saturated with octanol (lower layer) was obtained as the aqueous phase.…”

Section: Methodsmentioning

confidence: 99%