Linking microbial community structure with molecular composition of dissolved organic matter during an industrial-scale composting

Che, Jiangang; Bai, Yudan; Li, Xi; Ye, Jie; Liao, Hanpeng; Cui, Peng; Yu, Zhen; Zhou, Shungui

doi:10.1016/j.jhazmat.2020.124281

Cited by 87 publications

(17 citation statements)

References 46 publications

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“…Caldicoprobacter is a kind of bacteria that can degrade complex carbohydrates and ferment hemicellulose into lactic acid, ethanol, and hydrogen. Meanwhile, these products can be transformed into butyrate for colon cells to supply energy ( 57 , 58 ).…”

Section: Discussionmentioning

confidence: 99%

Grifola frondosa may play an anti-obesity role by affecting intestinal microbiota to increase the production of short-chain fatty acids

2023

Front. Endocrinol.

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BackgroundGrifola frondosa (G. frondosa) is a fungus with good economic exploitation prospects of food and medicine homologation. This study aims to investigate the effects of G. frondosa powder suspension (GFPS) on the intestinal contents microbiota and the indexes related to oxidative stress and energy metabolism in mice, to provide new ideas for developing G. frondosa weight loss products.MethodsTwenty Kunming mice were randomly divided into control (CC), low-dose GFPS (CL), medium-dose GFPS (CM), and high-dose GFPS (CH) groups. The mice in CL, CM, and CH groups were intragastrically administered with 1.425 g/(kg·d), 2.85 g/(kg·d), and 5.735 g/(kg·d) GFPS, respectively. The mice in CC group were given the same dose of sterile water. After 8 weeks, liver and muscle related oxidative stress and energy metabolism indicators were detected, and the intestinal content microbiota of the mice was detected by 16S rRNA high-throughput sequencing.ResultsAfter eight weeks of GFPS intervention, all mice lost weight. Compared with the CC group, lactate dehydrogenase (LDH) and malondialdehyde (MDA) contents in CL, CM, and CH groups were increased, while Succinate dehydrogenase (SDH) and Superoxide Dismutase (SOD) contents in the liver were decreased. The change trends of LDH and SDH in muscle were consistent with those in the liver. Among the above indexes, the change in CH is the most significant. The Chao1, ACE, Shannon, and Simpson index in CL, CM, and CH groups were increased. In the taxonomic composition, after the intervention with GFPS, the short-chain fatty acid (SCFA)-producing bacteria such as unclassified Muribaculaceae, Alloprevotella, and unclassified Lachnospiraceae increased. In linear discriminant analysis effect size (LEfSe) analysis, the characteristic bacteria in CC, CL, CM, and CH groups showed significant differences. In addition, some characteristic bacteria significantly correlated with related energy metabolism indicators.ConclusionThe preventive effect of G. frondosa on obesity is related to changing the structure of intestinal content microbiota and promoting the growth of SCFAs. While excessive intake of G. frondosa may not be conducive to the antioxidant capacity and energy metabolism.

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Section: Discussionmentioning

confidence: 99%

Grifola frondosa may play an anti-obesity role by affecting intestinal microbiota to increase the production of short-chain fatty acids

2023

Front. Endocrinol.

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“…Bacillus species are known to secrete catabolic enzymes, such as proteases, which, through proteolysis, promote ammonification and contribute to pH increase [ 48 ]. Bacteria of the Bacillales order made a significant contribution to the decomposition of lignocellulose in the works by Antunes et al, Che et al, and Zhu et al [ 45 , 50 , 51 ]. Thermophilic microorganisms Thermobifida and Planifilum were prominent participants in the recalcitrant OM decomposition and humus formation during composting [ 39 , 51 , 52 ].…”

Section: Discussionmentioning

confidence: 99%

“…The CH 4 emission and a significant number of methane metabolism genes in the microbiome indicated the activity of an anaerobic community, which included the bacteria Tepidimicrobium , Caldicoprobacter , and Limnochorda . In the research by Che et al [ 50 ], Tepidimicrobium and Caldicoprobacter contributed significantly to waste composting due to their ability to decompose proteins and carbohydrates.…”

Section: Discussionmentioning

confidence: 99%

Microbiota Dynamics of Mechanically Separated Organic Fraction of Municipal Solid Waste during Composting

et al. 2021

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Mechanical-biological treatment of municipal solid waste (MSW) facilitates reducing the landfill workload. The current research aimed to study general activity parameters, content, functions, and diversity of fungal and prokaryotic microbiota in mechanically separated organic fraction of MSW (ms-OFMSW) composting, without using bulking agents and process-promoting additives. During 35 days of composting, vigorous emission of CO2 (max. 129.4 mg CO2 kg−1 h−1), NH3 (max. 0.245 mg NH3 kg−1 h−1), and heat release (max. 4.28 kJ kg−1 h−1) occurred, indicating intense microbial activity. Immediately following the preparation of the composting mixture, eight genera of lactic acid bacteria and fungal genera Rhizopus, Aspergillus, Penicillium, Agaricus, and Candida were predominant. When the temperature increased to more than 60 °C, the microbial biodiversity decreased. Due to succession, the main decomposers of ms-OFMSW changed. The Bacillaceae family, the genera Planifilum, Thermobifida, and Streptomyces, and the fungal genera Thermomyces and Microascus were involved in the processes of organic matter mineralization at the high-temperature and later stages. The biodiversity of the microbiota increased at the stages of cooling and maturation under conditions of relatively high nitrogen content. Thus, the microbial community and its succession during ms-OFMSW composting were characterized for the first time in this work.

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“…Compost products can be utilized as organic fertilizer for soil, which could be bene cial for the improvement of soil quality and recycling of resources (Fang et al, 2016;Liu et al, 2021;Monda et al, 2017). Composting is generally associated with the degradation and humi cation of organic matters due to intense microbial activity (Che et al, 2021;Jiang et al, 2019;Niu et al, 2021;Zhu et al, 2020). It is widely recognized that dissolved organic matter (DOM) is the most active component during composting, mainly due to the amounts of aliphatics, polysaccharides, and proteins that are preferentially consumed by microorganisms (Chen et al, 2017;Jiang et al, 2019;Xiao et al, 2019;Yang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Insight into the evolution characteristics on molecular weight of compost dissolved organic matters using high-performance size exclusion chromatography combined with a two-dimensional correlation analysis

Cheng

Chen

et al. 2022

Environ Sci Pollut Res

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The information on molecular weight (MW) characteristics of DOM and relevant evolution behaviors during composting are limited. In this study, DOM extracted from co-composting of chicken manure and rice husks were comprehensively analyzed by using high-performance size exclusion chromatography (HPSEC) combined with a two-dimensional correlation spectroscopy (2D COS) to explore the evolution characteristics of MW of compost DOM. The HPSEC detected at UV of 254 nm and at uorescence (FL) Ex/Em wavelengths (315/410, 270/455 nm) all showed a gradual increase in both weight-average and number-average MW for DOM, suggesting that the large MW fractions were continuously generated and polymerized during composting. The 2D COS applied on HPSEC-UV and -FL further identi ed the key active MW chromophoric (i.e., 0.5, 7.2. 9.5, 26.3, 30.7, and 83.9 kDa) and uorophoric (i.e., 0.55 and 3.5 kDa) molecules that mainly participated in the transformation processes of compost DOM. Moreover, these active MW species were preferentially formed by the order of small to large molecules. A hetero-2D COS analysis disclosed the change sequence in the order of 0.5 and 7.2 kDa chromophores → 3.5 kDa uorophores, and the 0.55 and 3.5 kDa uorophores → 26.3 and 83.9 kDa chromophores.

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Linking microbial community structure with molecular composition of dissolved organic matter during an industrial-scale composting

Cited by 87 publications

References 46 publications

Grifola frondosa may play an anti-obesity role by affecting intestinal microbiota to increase the production of short-chain fatty acids

Grifola frondosa may play an anti-obesity role by affecting intestinal microbiota to increase the production of short-chain fatty acids

Microbiota Dynamics of Mechanically Separated Organic Fraction of Municipal Solid Waste during Composting

Insight into the evolution characteristics on molecular weight of compost dissolved organic matters using high-performance size exclusion chromatography combined with a two-dimensional correlation analysis

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