Evaluating the toxicity of biomass derived platform chemicals

2016 ◽  
Vol 18 (17) ◽  
pp. 4733-4742 ◽  
Author(s):  
Sónia P. M. Ventura ◽  
Paulo de Morais ◽  
Jaime A. S. Coelho ◽  
Tânia Sintra ◽  
João A. P. Coutinho ◽  
...  
Keyword(s):  
Plant Biomass ◽  
Building Blocks ◽  
Industrial Processes ◽  
Platform Chemicals

Furans and their derivatives are well-known chemical building blocks common in plant biomass, and are abundantly used in food, medicines and industrial processes.

scholarly journals Thermophilic Degradation of Hemicellulose, a Critical Feedstock in the Production of Bioenergy and Other Value-Added Products

2020 ◽  
Vol 86 (7) ◽  
Author(s):  
Isaac Cann ◽  
Gabriel V. Pereira ◽  
Ahmed M. Abdel-Hamid ◽  
Heejin Kim ◽  
Daniel Wefers ◽  
...  
Keyword(s):  
Cell Wall ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Plant Biomass ◽  
Animal Feed ◽  
Value Added ◽  
Building Blocks ◽  
Economic Feasibility ◽  
Renewable Fuels ◽  
Microbial Enzymes

ABSTRACT Renewable fuels have gained importance as the world moves toward diversifying its energy portfolio. A critical step in the biomass-to-bioenergy initiative is deconstruction of plant cell wall polysaccharides to their unit sugars for subsequent fermentation to fuels. To acquire carbon and energy for their metabolic processes, diverse microorganisms have evolved genes encoding enzymes that depolymerize polysaccharides to their carbon/energy-rich building blocks. The microbial enzymes mostly target the energy present in cellulose, hemicellulose, and pectin, three major forms of energy storage in plants. In the effort to develop bioenergy as an alternative to fossil fuel, a common strategy is to harness microbial enzymes to hydrolyze cellulose to glucose for fermentation to fuels. However, the conversion of plant biomass to renewable fuels will require both cellulose and hemicellulose, the two largest components of the plant cell wall, as feedstock to improve economic feasibility. Here, we explore the enzymes and strategies evolved by two well-studied bacteria to depolymerize the hemicelluloses xylan/arabinoxylan and mannan. The sets of enzymes, in addition to their applications in biofuels and value-added chemical production, have utility in animal feed enzymes, a rapidly developing industry with potential to minimize adverse impacts of animal agriculture on the environment.

scholarly journals Synthesis of bio-based building blocks from vegetable oils: a platform chemicals approach

2013 ◽  
Vol 20 (1) ◽  
pp. 16-22 ◽  
Author(s):  
Myriam Desroches ◽  
Rémi Auvergne ◽  
Bernard Boutevin ◽  
Sylvain Caillol
Keyword(s):  
Vegetable Oils ◽  
Building Blocks ◽  
Platform Chemicals

scholarly journals Synthesis of bio-based building blocks from vegetable oils: A platform chemicals approach

2014 ◽  
Vol 26 (2) ◽  
pp. 35-38 ◽  
Author(s):  
Myriam Desroches ◽  
Sofia Benyahya ◽  
Vincent Besse ◽  
Rémi Auvergne ◽  
Bernard Boutevin ◽  
...  
Keyword(s):  
Vegetable Oils ◽  
Building Blocks ◽  
Platform Chemicals

scholarly journals Enhanced Activity by Genetic Complementarity: Heterologous Secretion of Clostridial Cellulases by Bacillus licheniformis and Bacillus velezensis

Molecules ◽  
2021 ◽  
Vol 26 (18) ◽  
pp. 5625
Author(s):  
Alexander Arsov ◽  
Kaloyan Petrov ◽  
Penka Petrova
Keyword(s):  
Bacillus Licheniformis ◽  
Plant Biomass ◽  
Wide Spectrum ◽  
Cellulase Activity ◽  
Glycoside Hydrolases ◽  
Ecological Niches ◽  
Reverse Transcription Pcr ◽  
Platform Chemicals ◽  
Hydrolysis Of Cellulose ◽  
Genetic Complementarity

To adapt to various ecological niches, the members of genus Bacillus display a wide spectrum of glycoside hydrolases (GH) responsible for the hydrolysis of cellulose and lignocellulose. Being abundant and renewable, cellulose-containing plant biomass may be applied as a substrate in second-generation biotechnologies for the production of platform chemicals. The present study aims to enhance the natural cellulase activity of two promising 2,3-butanediol (2,3-BD) producers, Bacillus licheniformis 24 and B. velezensis 5RB, by cloning and heterologous expression of cel8A and cel48S genes of Acetivibrio thermocellus. In B. licheniformis, the endocellulase Cel8A (GH8) was cloned to supplement the action of CelA (GH9), while in B. velezensis, the cellobiohydrolase Cel48S (GH48) successfully complemented the activity of endo-cellulase EglS (GH5). The expression of the natural and heterologous cellulase genes in both hosts was demonstrated by reverse-transcription PCR. The secretion of clostridial cellulases was additionally enhanced by enzyme fusion to the subtilisin-like signal peptide, reaching a significant increase in the cellulase activity of the cell-free supernatants. The results presented are the first to reveal the possibility of genetic complementation for enhancement of cellulase activity in bacilli, thus opening the prospect for genetic improvement of strains with an important biotechnological application.

An evaluation of bottom ash from plant biomass as a replacement for cement in building blocks

Fuel ◽  
2014 ◽  
Vol 118 ◽  
pp. 272-280 ◽  
Author(s):  
B. Carrasco ◽  
N. Cruz ◽  
J. Terrados ◽  
F.A. Corpas ◽  
L. Pérez
Keyword(s):  
Plant Biomass ◽  
Bottom Ash ◽  
Building Blocks

scholarly journals Recyclable Ir Nanoparticles for the Catalytic Hydrogenation of Biomass-Derived Carbonyl Compounds

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 914
Author(s):  
Roberto Sole ◽  
Chiara Buranello ◽  
Noemi Bardella ◽  
Alessandro Di Michele ◽  
Stefano Paganelli ◽  
...  
Keyword(s):  
Catalytic Hydrogenation ◽  
Carbonyl Compounds ◽  
Levulinic Acid ◽  
Building Blocks ◽  
Liquid Extraction ◽  
Anionic Ligand ◽  
Platform Chemicals ◽  
Liquid Liquid Extraction ◽  
Depth Analysis ◽  
Spherical Structures

The valorisation of biomass-derived platform chemicals via catalytic hydrogenation is an eco-friendly tool which allows us to recover bio-based building blocks and produce fine chemicals with high industrial appeal. In the present study, a novel surfactant-type triazolyl-thioether ligand was prepared, showing excellent catalytic activity in the presence of bis(1,5-cyclooctadiene)diiridium(I) dichloride [Ir(COD)Cl]2 for the hydrogenation of furfural, cinnamaldehyde, levulinic acid, 5-hydroxymethylfurfural, vanillin, and citral. Easy recovery by liquid/liquid extraction allowed us to recover the catalyst, which could then be efficiently recycled up to 11 times for the hydrogenation of furfural. In-depth analysis revealed the formation of spherical structures with metal nanoparticles as big as 2–6 nm surrounded by the anionic ligand, preventing iridium nanoparticle degradation.

scholarly journals Coding Synthetic Chemistry Strategies into Bacterial Designer Cells

2021 ◽  
Author(s):  
Yu-Chang Liu ◽  
Zhong-Liu Wu ◽  
Jan Deska
Keyword(s):  
Building Blocks ◽  
Cell System ◽  
Synthetic Chemistry ◽  
Bacterial Host ◽  
Whole Cell ◽  
Isolation And Purification ◽  
Platform Chemicals ◽  
Natural Enzyme ◽  
High Degree

<p>Following a synthetic chemistry blueprint for the valorization of lignocellulosic platform chemicals, this study showcases a so far unprecedented approach to implement non-natural enzyme modules in vivo. For the design of a novel functional whole cell tool, two purely abiotic transformations were incorporated into a recombinant bacterial host that allows production of complex lactone building blocks. This whole cell system streamlines the synthetic cascade, eliminates isolation and purification steps, and provides a high degree stereoselectivity that has so far been elusive in the chemical methodology.</p>

scholarly journals Coding Synthetic Chemistry Strategies into Bacterial Designer Cells

2021 ◽  
Author(s):  
Yu-Chang Liu ◽  
Zhong-Liu Wu ◽  
Jan Deska
Keyword(s):  
Building Blocks ◽  
Cell System ◽  
Synthetic Chemistry ◽  
Bacterial Host ◽  
Whole Cell ◽  
Isolation And Purification ◽  
Platform Chemicals ◽  
Natural Enzyme ◽  
High Degree

<p>Following a synthetic chemistry blueprint for the valorization of lignocellulosic platform chemicals, this study showcases a so far unprecedented approach to implement non-natural enzyme modules in vivo. For the design of a novel functional whole cell tool, two purely abiotic transformations were incorporated into a recombinant bacterial host that allows production of complex lactone building blocks. This whole cell system streamlines the synthetic cascade, eliminates isolation and purification steps, and provides a high degree stereoselectivity that has so far been elusive in the chemical methodology.</p>

Catalytic chemical processes for biomass conversion: Prospects for future biorefineries

2014 ◽  
Vol 86 (5) ◽  
pp. 843-857 ◽  
Author(s):  
Rafael Luque
Keyword(s):  
Biomass Conversion ◽  
Complex Structure ◽  
Value Added ◽  
Building Blocks ◽  
Chemical Processes ◽  
Relevant Research ◽  
Short Overview ◽  
Platform Chemicals ◽  
Biomass Processing ◽  
Research Avenue

AbstractBiomass is a renewable and abundant feedstock that is poised to become a future alternative to petroleum as the understanding and technology surrounding catalytic biomass conversion and biorefineries progresses. A relevant research avenue explored in recent years deals with biomass deconstruction into simpler compounds (platform chemicals) by overcoming its recalcitrant and complex structure and subsequently converting these building blocks into value-added chemicals, fuels and materials in a similar way to that of current refineries. This contribution is aimed at providing a short overview of biomass processing chemistry by illustrating some relevant examples of catalytic strategies for biorefineries.

Potential of a short rotation coppice poplar as a feedstock for platform chemicals and lignin-based building blocks

2018 ◽  
Vol 123 ◽  
pp. 698-706 ◽  
Author(s):  
Viktoria Rohde ◽  
Thomas Hahn ◽  
Moritz Wagner ◽  
Sarah Böringer ◽  
Beatrice Tübke ◽  
...  
Keyword(s):  
Building Blocks ◽  
Short Rotation Coppice ◽  
Platform Chemicals ◽  
Short Rotation
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