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In general, the biological process from converting the lignocellulose biomass to fuel ethanol involves: (1) pretreatment either to remove lignin or hemicellulose to liberate cellulose; (2) depolymerization of carbohydrate polymers to produce free sugars by cellulase mediated action; (3) fermentation of hexose and/or pentose sugars to produce ethanol; (4) distillation of ethanol.
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OSTI.GOV Technical Report: Bioconversion of plant biomass to ethanol. First bimonthly and quarterly report
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The present invention provides a method for the conversion of a biomass to ethanol that includes increasing the moisture content of the biomass. The invention may be employed with any of a variety of biomasses, such as Arundo donax.
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Bioconversion of sugarcane biomass into ethanol: an overview about composition, pretreatment methods, detoxification of hydrolysates, enzymatic saccharification, and ethanol fermentation. J Biomed Biotechnol. 2012;2012:989572. doi: 10.1155/2012/989572. Epub 2012 Nov 26.
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2012-11-26 Ribolosephosphate-3-epimerase (5.1.3.1), transaldolase (E.C. 2.2.1.2), and transketolase (E.C. 2.2.1.1) sequentially convert D-xylose-5-phosphate into glyceraldehyde-3-phosphate and fructose-6-phoshate by non-oxidative rearrangement resulting into the formation of ethanol by the Emden-Meyorhoff Pathway.
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2020-11-11 The ethanol content was examined by HPLC after the fermentation of sugar hydrolysate derived through the enzymatic hydrolysis of combinatorially pretreated ([Emim]Cl and ammonium carbonate) SCT biomass. Maximum ethanol yield (102 mg/g biomass
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Depleted supplies of fossil fuel, regular price hikes of gasoline, and environmental damage have necessitated the search for economic and eco-benign alternative of gasoline. Ethanol is produced from food/feed-based substrates (grains, sugars, and molasses), and its application as an energy source does not seem fit for long term due to the increasing fuel, food, feed, and other needs. These ...
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Steps involved in conversion of biomass into ethanol- rectify the 1st paragraph. Ethanol production from lignocellulosic biomass involves the subsequent chief steps: pretreatment of the biomass to render the cellulose and hemicelluloses amenable to enzymatic attack, hydrolysis of cellulose and hemicelluloses into fermentable sugars, fermentation of ...
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Current efforts have been made to increase sugar yields through an efficient bioconversion process that doubles the production of ethanol. In order to improve scaling up of the cellulase production process and to address a significant bottleneck, recent advances have been made to overcome the difficulties associated with heat transfer during the fermentation process.
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2011-5-3 Over the past few decades, a large number of research efforts have focused on the bioconversion of lignocellulose to produce biofuels, such as ethanol [1, 3]. This process generally involves three main steps: (1) pretreatment, to break down the recalcitrant structures of lignocellulose; (2) enzymatic hydrolysis, to hydrolyze polysaccharides (e.g., cellulose, hemicellulose) into fermentable sugars; and (3) fermentation, to convert sugars into ethanol.
Read MoreOSTI.GOV Technical Report: Bioconversion of plant biomass to ethanol. First bimonthly and quarterly report
Read MoreThe present invention provides a method for the conversion of a biomass to ethanol that includes increasing the moisture content of the biomass. The invention may be employed with any of a variety of biomasses, such as Arundo donax.
Read More
2014-3-3 As a biocatalyst for the efficient conversion of lignocellulosic biomass into ethanol it is preferable to utilize a microbe that possesses the ability to ferment various types of carbohydrates, which is a characteristic not observed in the above mentioned xylose
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Review Article Bioconversion of Sugarcane Biomass into Ethanol: An Overview about Composition, Pretreatment Methods, Detoxification of Hydrolysates, Enzymatic Saccharification, and Ethanol
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2013-11-14 bagasse into ethanol by Clostridium thermocellum ATCC 27405 ... lignocellulosic biomass hydrolysis and fermentation of released sugars to ethanol in one bioreactor, is a promising technology for cost reduction in the biological processing of biomass, specially using agroindustrial residues. ... or directly to glucose-1-phosphate (G n
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2012-10-25 pomace into ethanol was investigated as a potential avenue for adding value to grape pomace. Like many lignocellulosic biomass feedstocks, grape pomace may require pretreatment prior to enzymatic hydrolysis and fermentation for ethanol production. Dilute acid is a common pretreatment method and is effective for feedstocks ranging from ...
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2013-10-16 After transport into the cell and conversion to xylulose-5-phosphate, ethanol production from xylose is believed to proceed by way of the pentose phosphate (PP) and Embden Meyerhof-Parnas (EMP) pathways, as depicted in Figure 1. Xylose must be converted to xylulose and then phosphorylated to xylulose-5-phosphate before entering the PP cycle.
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2011-5-3 Biofuels produced from lignocellulosic biomass can significantly reduce the energy dependency on fossil fuels and the resulting effects on environment. In this respect, cellulosic ethanol as an alternative fuel has the potential to become a viable energy source in the near future. Over the past few decades, tremendous effort has been undertaken to make cellulosic ethanol cost competitive with ...
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of starch metabolizable, and the total ethanol yield (Abouzied Reddy, 1986). The purpose of this study was to examine the effects of some environmental factors on the bioconversion of cassava starch into ethanol using co-cultures of A. niger and S. cerevisiae in a simultaneous saccharification and fermentation (SSF) process.
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2018-4-18 Producing Glucose 6-Phosphate from Cellulosic Biomass Structural Insights into Levoglucosan Bioconversion Abstract The most abundant carbohydrate product of cellulosic biomass pyrolysis is the anhydrosugar levoglucosan (1,6-anhydro-β-D-glucopyranose), which can be converted to glucose 6-phosphate by levoglucosan kinase (LGK).
Read MoreOSTI.GOV Technical Report: Bioconversion of plant biomass to ethanol. First bimonthly and quarterly report
Read More
Bioconversion of Sugarcane Biomass into Ethanol: An Overview about Composition, Pretreatment Methods, Detoxification of Hydrolysates, Enzymatic Saccharification, and Ethanol Fermentation
Read More2014-3-3 As a biocatalyst for the efficient conversion of lignocellulosic biomass into ethanol it is preferable to utilize a microbe that possesses the ability to ferment various types of carbohydrates, which is a characteristic not observed in the above mentioned xylose
Read More2012-10-25 pomace into ethanol was investigated as a potential avenue for adding value to grape pomace. Like many lignocellulosic biomass feedstocks, grape pomace may require pretreatment prior to enzymatic hydrolysis and fermentation for ethanol production. Dilute acid is a common pretreatment method and is effective for feedstocks ranging from ...
Read More2013-10-16 After transport into the cell and conversion to xylulose-5-phosphate, ethanol production from xylose is believed to proceed by way of the pentose phosphate (PP) and Embden Meyerhof-Parnas (EMP) pathways, as depicted in Figure 1. Xylose must be converted to xylulose and then phosphorylated to xylulose-5-phosphate before entering the PP cycle.
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2017-7-18 Bioconversion of Rice Straw into Ethanol: Fungi and Yeasts are the Backbone Microbiota of the Process A.M. Nasr2, ... cellulases is the production of ethanol fuel from lignocellulosic biomass which is a good substitute for gasoline in internal ... phosphate) was added to basal medium
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the biomass into ethanol using bioconversion processes. This experimental work was then accompanied by a Life Cycle Assessment (LCA) to determine the overall environmental impact of the proposed processes. ASPEN models of biorefineries were developed to provide process data for the LCA. An assessment of economic viability
Read Moreof starch metabolizable, and the total ethanol yield (Abouzied Reddy, 1986). The purpose of this study was to examine the effects of some environmental factors on the bioconversion of cassava starch into ethanol using co-cultures of A. niger and S. cerevisiae in a simultaneous saccharification and fermentation (SSF) process.
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2019-12-9 Chapter 3: Production of Bioethanol from Sugar: Source: Bioconversion of Sugarcane Biomass into Ethanol: An Overview about Composition, Pretreatment Methods, Detoxification of Hydrolysates, Enzymatic Saccharification, and Ethanol Fermentation, 2012 Larissa Canilha et al.
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Then, 10% culture seed was inoculated into the fresh above medium. After incubation at 50 °C and 150 rpm for 12 h, the cells were harvested by centrifugation (8000g, 3 min and 4 °C) and washed twice with phosphate buffer (200 mM, pH 7.0). 2.4. General procedure for bio-reduction of FAL to FOL
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