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[PMID]:29231019
[Au] Autor:Ji SJ; Liu W
[Ad] Endereço:Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.
[Ti] Título:[Simultaneous Quantitative Analysis of Koumine, Gelsemine and Gelsenicine in Biological Samples by LC-MS/MS].
[So] Source:Fa Yi Xue Za Zhi;33(2):141-147, 2017 Apr.
[Is] ISSN:1004-5619
[Cp] País de publicação:China
[La] Idioma:chi
[Ab] Resumo:OBJECTIVES: To establish a LC-MS/MS method which is accurate and sensitive for determination of koumine, gelsemine, and gelsenicine in biological samples and to verify the method. METHODS: Strychnine was used as internal standard. Analytes in blood, urine and liver with 1% sodium hydroxide solution were extracted by ethyl acetate. Chromatographic separation was achieved on a ZORBAX SB-C18 column (150 mm×2.1 mm, 5 µm), and gradient elution was performed with the buffer solution of methanol-20 mmol/L ammonium acetate (including 0.1% formic acid and 5% acetonitrile) as mobile phase. Qualitative and quantitative analysis was performed in the multiple reaction monitoring mode coupled with an electrospray ionization source under positive ion mode(ESI⁺). RESULTS: The linearity of koumine, gelsemine and gelsenicine in blood, urine and liver was good within corresponding linear limitation and the correlation coefficients ( )>0.995 0. The limits of detection were 0.1 ng/mL (0.1 ng/g), 0.1 ng/mL (0.1 ng/g) and 0.01 ng/mL (0.01 ng/g), respectively. The extraction recovery and accuracy of the alkaloids ranged from 61.9% to 114.6% and 92.4% to 114.3%, respectively. The relative standard deviations of the intra-day and inter-day precisions were not more than 11.0%. CONCLUSIONS: The method is selective, sensitive and suitable for simultaneous determination of koumine, gelsemine and gelsenicine in body fluids and tissues, which offering technical support for clinical diagnosis and treatment and forensic toxicological analysis of poisoning.
[Mh] Termos MeSH primário: Alcaloides/metabolismo
Cromatografia Líquida de Alta Pressão
Alcaloides de Indol/metabolismo
Espectrometria de Massas em Tandem
[Mh] Termos MeSH secundário: Alcaloides/sangue
Alcaloides/urina
Cromatografia Líquida
Toxicologia Forense
Formiatos
Seres Humanos
Alcaloides de Indol/análise
Alcaloides de Indol/sangue
Alcaloides de Indol/urina
Fígado
Reprodutibilidade dos Testes
Estricnina
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alkaloids); 0 (Formates); 0 (Indole Alkaloids); 0 (gelsenicine); 0 (koumine); 0YIW783RG1 (formic acid); 5Y13A78Z72 (gelsemine); H9Y79VD43J (Strychnine)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171213
[St] Status:MEDLINE
[do] DOI:10.3969/j.issn.1004-5619.2017.02.007


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[PMID]:29410988
[Au] Autor:Ribar A; Huber SE; Smialek MA; Tanzer K; Neustetter M; Schürmann R; Bald I; Denifl S
[Ad] Endereço:Institute for Ion Physics and Applied Physics and Center of Molecular Biosciences Innsbruck, Leopold Franzens University of Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria. stephan.denifl@uibk.ac.at.
[Ti] Título:Hydroperoxyl radical and formic acid formation from common DNA stabilizers upon low energy electron attachment.
[So] Source:Phys Chem Chem Phys;20(8):5578-5585, 2018 Feb 21.
[Is] ISSN:1463-9084
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:2-Amino-2-(hydroxymethyl)-1,3-propanediol (TRIS) and ethylenediaminetetraacetic acid (EDTA) are key components of biological buffers and are frequently used as DNA stabilizers in irradiation studies. Such surface or liquid phase studies are done with the aim to understand the fundamental mechanisms of DNA radiation damage and to improve cancer radiotherapy. When ionizing radiation is used, abundant secondary electrons are formed during the irradiation process, which are able to attach to the molecular compounds present on the surface. In the present study we experimentally investigate low energy electron attachment to TRIS and methyliminodiacetic acid (MIDA), an analogue of EDTA, supported by quantum chemical calculations. The most prominent dissociation channel for TRIS is through hydroperoxyl radical formation, whereas the dissociation of MIDA results in the formation of formic and acetic acid. These compounds are well-known to cause DNA modifications, like strand breaks. The present results indicate that buffer compounds may not have an exclusive protecting effect on DNA as suggested previously.
[Mh] Termos MeSH primário: DNA/química
Elétrons
Formiatos/síntese química
Peróxidos/síntese química
Teoria Quântica
[Mh] Termos MeSH secundário: Formiatos/química
Radicais Livres/síntese química
Radicais Livres/química
Conformação de Ácido Nucleico
Peróxidos/química
Termodinâmica
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Formates); 0 (Free Radicals); 0 (Peroxides); 0YIW783RG1 (formic acid); 9007-49-2 (DNA)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180208
[St] Status:MEDLINE
[do] DOI:10.1039/c7cp07697e


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[PMID]:28926680
[Au] Autor:Ahn JH; Bang J; Kim WJ; Lee SY
[Ad] Endereço:Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus program), BioProcess Engineering Research Center, Institute for the BioCentury, Yuseong-gu, Daejeon, Republic of Korea.
[Ti] Título:Formic acid as a secondary substrate for succinic acid production by metabolically engineered Mannheimia succiniciproducens.
[So] Source:Biotechnol Bioeng;114(12):2837-2847, 2017 Dec.
[Is] ISSN:1097-0290
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:There has been much effort exerted to reduce one carbon (C1) gas emission to address climate change. As one promising way to more conveniently utilize C1 gas, several technologies have been developed to convert C1 gas into useful chemicals such as formic acid (FA). In this study, systems metabolic engineering was utilized to engineer Mannheimia succiniciproducens to efficiently utilize FA. C isotope analysis of M. succiniciproducens showed that FA could be utilized through formate dehydrogenase (FDH) reaction and/or the reverse reaction of pyruvate formate lyase (PFL). However, the naturally favored forward reaction of PFL was found to lower the SA yield from FA. In addition, FA assimilation via FDH was found to be more efficient than the reverse reaction of PFL. Thus, the M. succiniciproducens LPK7 strain, which lacks in pfl, ldh, pta, and ack genes, was selected as a base strain. In silico metabolic analysis confirmed that utilization of FA would be beneficial for the enhanced production of SA and suggested FDH as an amplification target. To find a suitable FDH, four different FDHs from M. succiniciproducens, Methylobacterium extorquens, and Candida boidinii were amplified in LPK7 strain to enhance FA assimilation. High-inoculum density cultivation using C labeled sodium formate was performed to evaluate FA assimilation efficiency. Fed-batch fermentations of the LPK7 (pMS3-fdh2 meq) strain was carried out using glucose, sucrose, or glycerol as a primary carbon source and FA as a secondary carbon source. As a result, this strain produced 76.11 g/L SA with the yield and productivity of 1.28 mol/mol and 4.08 g/L/h, respectively, using sucrose and FA as dual carbon sources. The strategy employed here will be similarly applicable in developing microorganisms to utilize FA and to produce valuable chemicals and materials from FA.
[Mh] Termos MeSH primário: Formiato Desidrogenases/genética
Formiatos/metabolismo
Melhoramento Genético/métodos
Mannheimia/fisiologia
Engenharia Metabólica/métodos
Análise do Fluxo Metabólico/métodos
Ácido Succínico/metabolismo
[Mh] Termos MeSH secundário: Simulação por Computador
Mannheimia/classificação
Modelos Biológicos
Especificidade da Espécie
Especificidade por Substrato
Ácido Succínico/isolamento & purificação
Regulação para Cima/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Formates); 0YIW783RG1 (formic acid); AB6MNQ6J6L (Succinic Acid); EC 1.2.1.2 (Formate Dehydrogenases)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171113
[Lr] Data última revisão:
171113
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170920
[St] Status:MEDLINE
[do] DOI:10.1002/bit.26435


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[PMID]:28771687
[Au] Autor:Young A; Gardiner D; Brosnan ME; Brosnan JT; Mailloux RJ
[Ad] Endereço:Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland, Canada.
[Ti] Título:Physiological levels of formate activate mitochondrial superoxide/hydrogen peroxide release from mouse liver mitochondria.
[So] Source:FEBS Lett;591(16):2426-2438, 2017 Aug.
[Is] ISSN:1873-3468
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Here, we found that formate, an essential one-carbon metabolite, activates superoxide (O2·-)/hydrogen peroxide (H O ) release from mitochondria. Sodium formate (30 µm) induces a significant increase in O2·-/H O production in liver mitochondria metabolizing pyruvate (50 µm). At concentrations deemed to be toxic, formate does not increase O2·-/H O production further. It was observed that the formate-mediated increase in O2·-/H O production is not associated with cytochrome c oxidase (COX) inhibition or changes in membrane potential and NAD(P)H levels. Sodium formate supplementation increases phosphorylating respiration without altering proton leaks. Finally, it was observed that the 2-oxoglutarate dehydrogenase (OGDH) inhibitors 3-methyl-2-oxovaleric acid (KMV) and CPI-613 inhibit the formate-induced increase in pyruvate-driven ROS production. The importance of these findings in one-carbon metabolism and physiology are discussed herein.
[Mh] Termos MeSH primário: Formiatos/toxicidade
Peróxido de Hidrogênio/metabolismo
Mitocôndrias Hepáticas/efeitos dos fármacos
Mitocôndrias Hepáticas/metabolismo
Superóxidos/metabolismo
[Mh] Termos MeSH secundário: Animais
Respiração Celular/efeitos dos fármacos
Ciclo do Ácido Cítrico/efeitos dos fármacos
Complexo IV da Cadeia de Transporte de Elétrons/metabolismo
Camundongos
NADP/metabolismo
[Pt] Tipo de publicação:LETTER
[Nm] Nome de substância:
0 (Formates); 0YIW783RG1 (formic acid); 11062-77-4 (Superoxides); 53-59-8 (NADP); BBX060AN9V (Hydrogen Peroxide); EC 1.9.3.1 (Electron Transport Complex IV)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171002
[Lr] Data última revisão:
171002
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170804
[St] Status:MEDLINE
[do] DOI:10.1002/1873-3468.12777


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[PMID]:28686840
[Au] Autor:El-Hellani A; El-Hage R; Salman R; Talih S; Shihadeh A; Saliba NA
[Ad] Endereço:Chemistry Department, Faculty of Arts and Sciences, American University of Beirut , Beirut 1107 2020, Lebanon.
[Ti] Título:Carboxylate Counteranions in Electronic Cigarette Liquids: Influence on Nicotine Emissions.
[So] Source:Chem Res Toxicol;30(8):1577-1581, 2017 Aug 21.
[Is] ISSN:1520-5010
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The wide pH range reported for electronic cigarette (ECIG) liquids indicates that nicotine may be present in one or more chemical forms. The nicotine form affects the bioavailability and delivery of nicotine from inhaled products. Protonated nicotine is normally associated with counteranions in tobacco products. The chemical and physical properties of counteranions may differently influence the nicotine form and emissions in ECIG aerosols. In this study, we examined how these anions influence nicotine emissions and their evaporation behavior and potential decomposition during ECIG operation. ECIG liquid solutions with equal nicotine concentration and pH but different counteranions (formate, acetate, and citrate) were prepared from analytical standards to assess the effect of the counteranion on nicotine partitioning. High performance liquid and gas chromatography methods were developed to determine the counteranions and the two protonated (NicH ) and free base (Nic) forms of nicotine in commercially available and standard solutions of ECIG liquids and aerosols. In commercial samples, acetate and citrate anions were detected. In standard solutions, both formate and acetate ions were found to evaporate intact, but citrate ion decomposed into formic acid and other products. This study also shows that the identity of the counteranion has no effect on total nicotine emission from ECIG in agreement with previous reports on tobacco cigarettes. However, the partitioning of aerosolized nicotine into NicH and Nic is anion-dependent even when the parent liquid pH is held constant. These results indicate that the anions found in a given ECIG product may influence the nicotine delivery profile to the user by enriching aerosols with free-base nicotine as in the case of polycarboxylic acids such as citric acid.
[Mh] Termos MeSH primário: Ácidos Carboxílicos/química
Sistemas Eletrônicos de Liberação de Nicotina
Nicotina/análise
[Mh] Termos MeSH secundário: Ácido Acético/química
Aerossóis/química
Cromatografia Gasosa
Cromatografia Líquida de Alta Pressão
Ácido Cítrico/química
Formiatos/química
Concentração de Íons de Hidrogênio
Íons/química
Nicotina/química
Tabaco/química
Tabaco/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Aerosols); 0 (Carboxylic Acids); 0 (Formates); 0 (Ions); 0YIW783RG1 (formic acid); 2968PHW8QP (Citric Acid); 6M3C89ZY6R (Nicotine); Q40Q9N063P (Acetic Acid)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170708
[St] Status:MEDLINE
[do] DOI:10.1021/acs.chemrestox.7b00090


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[PMID]:28664681
[Au] Autor:Moore CE; Gyenge EL
[Ad] Endereço:Department of Chemical and Biological Engineering, Clean Energy Research Centre, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada.
[Ti] Título:Tuning the Composition of Electrodeposited Bimetallic Tin-Lead Catalysts for Enhanced Activity and Durability in Carbon Dioxide Electroreduction to Formate.
[So] Source:ChemSusChem;10(17):3512-3519, 2017 Sep 11.
[Is] ISSN:1864-564X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Bimetallic Sn-Pb catalysts with five different Sn/Pb atomic ratios were electrodeposited on Teflonated carbon paper and non-Teflonated carbon cloth using both fluoroborate- and oxide-containing deposition media to produce catalysts for the electrochemical reduction of CO (ERC) to formate (HCOO ). The interaction between catalyst composition, morphology, substrate, and deposition media was investigated by using cyclic voltammetry and constant potential electrolysis at -2.0 V versus Ag/AgCl for 2 h in 0.5 m KHCO . The catalysts were analyzed before and after electrolysis by using SEM and XRD to determine the mechanisms of Faradaic efficiency loss and degradation. Catalysts that are mainly Sn with 15-35 at % Pb generated Faradaic efficiencies up to 95 % with a stable performance. However, pure Sn catalysts showed high initial stage formate production rates but experienced an extensive (up to 30 %) decrease of the Faradaic efficiency. The XRD results demonstrated the presence of polycrystalline SnO after electrolysis using Sn-Pb catalysts with 35 at % Pb and its absence in the case of pure Sn. It is proposed that the presence of Pb (15-35 at %) in mainly Sn catalysts stabilized SnO , which is responsible for the enhanced Faradaic efficiency and catalytic durability in the ERC.
[Mh] Termos MeSH primário: Dióxido de Carbono/química
Galvanoplastia
Formiatos/química
Chumbo/química
Estanho/química
[Mh] Termos MeSH secundário: Catálise
Eletroquímica
Fluorcarbonetos/química
Oxirredução
Prata/química
Compostos de Prata/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fluorocarbons); 0 (Formates); 0 (Silver Compounds); 0YIW783RG1 (formic acid); 142M471B3J (Carbon Dioxide); 2P299V784P (Lead); 3M4G523W1G (Silver); 7440-31-5 (Tin); MWB0804EO7 (silver chloride)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170918
[Lr] Data última revisão:
170918
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170701
[St] Status:MEDLINE
[do] DOI:10.1002/cssc.201700761


  7 / 6043 MEDLINE  
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[PMID]:28651131
[Au] Autor:Lu Y; Luo H; Yang K; Liu G; Zhang R; Li X; Ye B
[Ad] Endereço:Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
[Ti] Título:Formic acid production using a microbial electrolysis desalination and chemical-production cell.
[So] Source:Bioresour Technol;243:118-125, 2017 Nov.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The aim of this study was to investigate the feasibility and optimization of formic acid production in the microbial electrolysis desalination and chemical-production cell (MEDCC). The maximum current density in the MEDCC with 72cm of the anode fiber length (72-MEDCC) reached 24.0±2.0A/m , which was much higher than previously reported. The maximum average formic acid production rate in the 72-MEDCC was 5.28 times higher than that in the MEDCC with 24cm of the anode fiber length (37.00±1.15vs. 7.00±0.25mg/h). High performance in the 72-MEDCC was attributed to small membrane spacing (1mm), high flow rate (1500µL/min) on the membrane surface and high anode biomass. The minimum electricity consumption of 0.34±0.04kWh/kg in the 72-MEDCC was only 3.1-18.8% of those in the EDBMs. The MEDCC should be a promising technology for the formic acid production.
[Mh] Termos MeSH primário: Fontes de Energia Bioelétrica
Formiatos
[Mh] Termos MeSH secundário: Eletricidade
Eletrodos
Eletrólise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Formates)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171023
[Lr] Data última revisão:
171023
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170627
[St] Status:MEDLINE


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[PMID]:28647247
[Au] Autor:Samui G; Antony R; Mahalinganathan K; Thamban M
[Ad] Endereço:National Centre for Antarctic and Ocean Research, Headland Sada, Vasco-da-Gama, Goa 403804, India. Electronic address: gautami@ncaor.gov.in.
[Ti] Título:Spatial variability and possible sources of acetate and formate in the surface snow of East Antarctica.
[So] Source:J Environ Sci (China);57:258-269, 2017 Jul.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Spatial trends of acetate (Ac ) and formate (Fo ) were determined in surface snow samples along a coastal-inland transect (180km) in the ice cap region at Princess Elizabeth Land and along a coastal transect in the Amery Ice Shelf (130km), East Antarctica. Variations in both Ac and Fo seem to be unrelated to the acidity of snow. Ionic balance determined for the snow samples indicate the availability of HNO that could undergo photolysis to produce hydroxyl radical (OH), one of the major reactants involved in oxidation reactions with organic matter. The strong positive correlations between Ac and NO in snow from both regions indicate that NO mediated OH-oxidation of organic compounds in snow could be an important source of Ac within the snowpack. On the other hand, negative correlation between Fo and NO might indicate that sources other than OH-oxidation of organic matter may be dominant in the case of Fo . Higher Ac concentrations in the ice cap compared to the ice shelf correspond with long-range transport of biomass burning emissions to the ice cap region. Interaction of Ac and Fo with alkaline minerals could lead to their stability in the snowpack and minimize their loss from the snow surface. Resident microbial communities could also influence the budget of the carboxylic acids in snow.
[Mh] Termos MeSH primário: Acetatos/análise
Monitoramento Ambiental
Poluentes Ambientais/análise
Formiatos/análise
Neve/química
[Mh] Termos MeSH secundário: Regiões Antárticas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acetates); 0 (Environmental Pollutants); 0 (Formates)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170630
[Lr] Data última revisão:
170630
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170626
[St] Status:MEDLINE


  9 / 6043 MEDLINE  
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[PMID]:28602663
[Au] Autor:Lee J; Jung JM; Oh JI; Sik Ok Y; Kwon EE
[Ad] Endereço:Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea.
[Ti] Título:Establishing a green platform for biodiesel synthesis via strategic utilization of biochar and dimethyl carbonate.
[So] Source:Bioresour Technol;241:1178-1181, 2017 Oct.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:To establish a green platform for biodiesel production, this study mainly investigates pseudo-catalytic (non-catalytic) transesterification of olive oil. To this end, biochar from agricultural waste (maize residue) and dimethyl carbonate (DMC) as an acyl acceptor were used for pseudo-catalytic transesterification reaction. Reaction parameters (temperature and molar ratio of DMC to olive oil) were also optimized. The biodiesel yield reached up to 95.4% under the optimal operational conditions (380°C and molar ratio of DMC to olive oil (36:1)). The new sustainable environmentally benign biodiesel production introduced in this study is greener and faster than conventional transesterification reactions.
[Mh] Termos MeSH primário: Biocombustíveis
Carvão Vegetal
Formiatos
[Mh] Termos MeSH secundário: Catálise
Esterificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biofuels); 0 (Formates); 0 (biochar); 16291-96-6 (Charcoal); KE9J097SPN (methyl carbonate)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171121
[Lr] Data última revisão:
171121
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170613
[St] Status:MEDLINE


  10 / 6043 MEDLINE  
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[PMID]:28525799
[Au] Autor:Yu L; Yuan Y; Tang J; Zhou S
[Ad] Endereço:Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
[Ti] Título:Thermophilic Moorella thermoautotrophica-immobilized cathode enhanced microbial electrosynthesis of acetate and formate from CO .
[So] Source:Bioelectrochemistry;117:23-28, 2017 Oct.
[Is] ISSN:1878-562X
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Microbial electrosynthesis (MES) is a promising technique that converts electricity and CO to biofuels using microbes as the catalysts. However, most of previous MES are conducted at mesophilic temperatures and challenged by low performances. Here we report a significant electrosynthesis performance enhancement via immobilization of a thermophilic microbe to cathodes. A temperature-dependent electron uptake rate of Moorella thermoautotrophica was observed at a cathode potential of -0.4V (vs. SHE), with a maximum current density of 63.47mAm at 55°C. Moreover, electrosynthesis rates of formate and acetate at 55°C were accelerated by 23.2 and 2.8 fold than those of 25°C, respectively. Compared with natural biofilms, immobilization of M. thermoautotrophica with carbon nanoparticles to electrodes further enhanced acetate and formate production rates (by 14 and 7.9 fold), reaching 58.2 and 63.2mmolm day at a coulombic efficiency of 65%, respectively. To our best knowledge, these are the highest electrosynthesis rates obtained thus far for pure cultures under the conditions of -0.4V (vs. SHE) and 55°C. This study, for the first time, demonstrates that embedding microbes to electrodes by carbon nanoparticles is a facile and efficient method of improving MES performance.
[Mh] Termos MeSH primário: Acetatos/metabolismo
Fontes de Energia Bioelétrica/microbiologia
Dióxido de Carbono/metabolismo
Formiatos/metabolismo
Moorella/metabolismo
[Mh] Termos MeSH secundário: Células Imobilizadas/metabolismo
Eletroquímica
Moorella/citologia
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acetates); 0 (Formates); 0YIW783RG1 (formic acid); 142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170815
[Lr] Data última revisão:
170815
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BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde