Biosurfactant-enhanced hydrogen production from organic fraction of municipal solid waste using co-culture of E. coli and Enterobacter aerogenes

Sharma, Preeti; Melkania, Uma

doi:10.1016/j.biortech.2017.06.182

Cited by 30 publications

(12 citation statements)

References 36 publications

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“…It has been observed that the addition of 10 g/L of BC enhanced the CH 4 production rate by 86.6% and shortened the lag period by 30.3% . Sharma and Melkania also found that the lag time was reduced via BC amendation.…”

Section: Introductionmentioning

confidence: 93%

Improved Fermentative Hydrogen Production with the Addition of Calcium-Lignosulfonate-Derived Biochar

et al. 2019

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This study investigated the roles of calcium lignosulfonate (CL) and its derived biochar (BC) in biohydrogen production. CL was pyrolyzed at 250 °C to produce BC, and the main characteristics of the two materials were compared. A series of anaerobic processes were carried out at 54 ± 1 °C, and the results suggested that CL remarkably lowered the H 2 yield compared with that obtained with CL-derived BC. The highest H 2 yield (262 mL/g glucose) was obtained at 20 g/L, corresponding to an increase of 50.9%, whereas the lowest H 2 yield (110 mL/g glucose) occurred at 20 g/L and was 36.4% lower than that in the control group (173 mL/g glucose, without CL and BC). The CL-derived BC exhibited more pore structures than CL, providing more attachment sites for anaerobes. In addition, the high potassium, calcium, and magnesium contents and low sulfur dosage enhanced the microbial activity and process stability.

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Section: Introductionmentioning

confidence: 93%

Improved Fermentative Hydrogen Production with the Addition of Calcium-Lignosulfonate-Derived Biochar

et al. 2019

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“…Here, their supplementation may enhance enzymatic lignocellulose degradation efficiency, probably by the improvement of substrate binding of the applied cellulases [212]. Another study reported increased hydrogen production from organic solid waste through surfactin and saponin supplementation [213].…”

Section: Applications Of Biosurfactantsmentioning

confidence: 99%

Marine Biosurfactants: Biosynthesis, Structural Diversity and Biotechnological Applications

et al. 2019

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Biosurfactants are amphiphilic secondary metabolites produced by microorganisms. Marine bacteria have recently emerged as a rich source for these natural products which exhibit surface-active properties, making them useful for diverse applications such as detergents, wetting and foaming agents, solubilisers, emulsifiers and dispersants. Although precise structural data are often lacking, the already available information deduced from biochemical analyses and genome sequences of marine microbes indicates a high structural diversity including a broad spectrum of fatty acid derivatives, lipoamino acids, lipopeptides and glycolipids. This review aims to summarise biosyntheses and structures with an emphasis on low molecular weight biosurfactants produced by marine microorganisms and describes various biotechnological applications with special emphasis on their role in the bioremediation of oil-contaminated environments. Furthermore, novel exploitation strategies are suggested in an attempt to extend the existing biosurfactant portfolio.

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“…The Cronobacter genus, formerly known as Enterobacter sakazakii ( Iversen et al, 2007 ), is a group of opportunistic pathogens that cause rare but life-threatening cases of necrotizing enterocolitis, meningitis, cyst formation, intracerebral infarctions, bacteremia, and sepsis in premature neonates and infants with underlying chronic conditions ( NazarowecWhite and Farber, 1997 ; Bahloul et al, 2017 ; Jung et al, 2017 ; Sharma and Melkania, 2017 ). The International Commission on Microbiological Specification for Foods has ranked Cronobacter ( E. sakazakii ) as a “severe hazard for restricted populations, life threatening or substantial chronic sequelae of long duration” ( Yan et al, 2012 ).…”

Section: Introductionmentioning

confidence: 99%

The Glutaredoxin Gene, grxB, Affects Acid Tolerance, Surface Hydrophobicity, Auto-Aggregation, and Biofilm Formation in Cronobacter sakazakii

Ling¹,

Zhang²,

Li³

et al. 2018

Front. Microbiol.

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Cronobacter species are foodborne pathogens that can cause neonatal meningitis, necrotizing enterocolitis, and sepsis; they have unusual abilities to survive in environmental stresses such as acid stress. However, the factors involved in acid stress responses and biofilm formation in Cronobacter species are poorly understood. In this study, we investigated the role of grxB on cellular morphology, acid tolerance, surface hydrophobicity, auto-aggregation (AAg), motility, and biofilm formation in Cronobacter sakazakii. The deletion of grxB decreased resistance to acid stresses, and notably led to weaker surface hydrophobicity, AAg, and biofilm formation under normal and acid stress conditions, compared with those of the wild type strain; however, motility was unaffected. Therefore, grxB appears to contribute to the survival of C. sakazakii in acid stresses and biofilm formation. This is the first report to provide valuable evidence for the role of grxB in acid stress responses and biofilm formation in C. sakazakii.

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Biosurfactant-enhanced hydrogen production from organic fraction of municipal solid waste using co-culture of E. coli and Enterobacter aerogenes

Cited by 30 publications

References 36 publications

Improved Fermentative Hydrogen Production with the Addition of Calcium-Lignosulfonate-Derived Biochar

Improved Fermentative Hydrogen Production with the Addition of Calcium-Lignosulfonate-Derived Biochar

Marine Biosurfactants: Biosynthesis, Structural Diversity and Biotechnological Applications

The Glutaredoxin Gene, grxB, Affects Acid Tolerance, Surface Hydrophobicity, Auto-Aggregation, and Biofilm Formation in Cronobacter sakazakii

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