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ethanol; ethanol fermentation, etc ; biotechnology; inoculum; temperature; Show all 5 Subjects
Abstract:
... The use of more appropriate kinetic models can assist in improving ethanol fermentation under conditions of very high gravity (VHG) and high cell density (HCD), in order to obtain higher amounts of ethanol in the broth combined with high productivity. The aim of this study was to model fed-batch ethanol fermentation under VHG/HCD conditions, at different temperatures, considering three types of in ...
ethanol; ethanol fuels; ethanol production, etc ; corn; crosslinking; feedstocks; gasoline; value added; waxy starch; wheat; Show all 10 Subjects
Abstract:
... The substitution of gasoline by ethanol with different ratios is commercialized around the world. In this review, an overview on feedstocks, affecting factors, and technical advances in starch ethanol production has been systematically presented. Most ethanol is produced from starchy crops, among which corn, wheat, and sorghum are the major contributors. Additional starchy crops have also been stu ...
... Reusing biocatalysts and repeated-batch process are promising approaches for the reduction of time and costs of a fermentation process. The present study investigated the use of α-amylase, glucoamylase, and cells of Saccharomyces cerevisiae immobilized on bacterial cellulose (BC) in repeated-batch simultaneous saccharification and fermentation (SSF) process for ethanol production from cassava pulp ...
ethanol; ethanol production, etc ; analysis of variance; bioethanol; biomass production; heterosis; Show all 6 Subjects
Abstract:
... Sorghum hybrids can provide enhanced bioethanol yield if genetically complementary parents and progenies are developed using efficient crossing and selection methods. The objective of this study was to determine the combining ability of sweet stem sorghum genotypes, and assess heterosis among F1 hybrids for ethanol production and associated traits. Eight sweet stem sorghum lines and four testers w ...
ethanol; ethanol production, etc ; Arundo donax; biochar; bioethanol; biomass; economic analysis; lignin; pyrolysis; Show all 9 Subjects
Abstract:
... In this study, two fermentation-pyrolysis pathways for cellulosic ethanol production were established to improve the economy of cellulosic ethanol plants by lignin-rich residue pyrolysis. Techno-economic assessment (TEA) was conducted for both novel pathways compared with conventional fermentation-combustion pathway based on biomass Arundo donax. Pathway simulation showed that compared with the fe ...
ethanol; ethanol production, etc ; adsorption; bioethanol; capital; energy; evaporation; hydrophilicity; pervaporation; polymers; prices; temperature; vapors; Show all 13 Subjects
Abstract:
... The bioethanol production process includes energy-demanding units with high operating costs, i.e., separation, dehydration, and stillage evaporation units. The present study attempts to reduce energy consumption and, ultimately, ethanol price through industrially feasible methods. These methods include adopting thermally-coupled columns, dividing-wall columns, single/multi-stage pervaporation proc ...
... The production of high concentrations of ethanol from N-methylmorpholine N-oxide- (NMMO) and phosphoric acid-pretreated rice straw was investigated at high solid loadings (solid-state) using filamentous fungus Mucor indicus. The impacts of most influential factors on ethanol production by simultaneous saccharification and fermentation (SSF), i.e., enzyme loadings (2.5, 5, 10, and 20 FPU/g substrat ...
... The effects of laccase pretreatment and surfactant addition in the simultaneous saccharification and fermentation (SSF) of corn stover by engineered Saccharomyces cerevisiae were studied. Surfactants Tween-80, tea saponin and rhamnolipid improved ethanol production in SSF, among which the biosurfactant rhamnolipid reached the highest ethanol yield. At the 6 d in SSF, the ethanol content of additio ...
... This study was undertaken to investigate the effect of temperature (25 °C and 30 °C) and nitrogen supplementation (with 20 g/L peptone or without) on bioethanol production from waste bread, watermelon and muskmelon feedstocks by Saccharomyces cerevisiae. Nitrogen addition resulted in higher ethanol yields at both temperatures. Fermentation at 30 °C produced a higher ethanol yield than at 25 °C. Th ...
ethanol, etc ; emulsions; polymerization; polystyrenes; temperature; Show all 5 Subjects
Abstract:
... Hollow concave polymer particles have attracted wide attention due to their particular properties and applications, however, the controllable synthesis of hollow concave polystyrene nanoparticles (HC-PSNPs) based on soap-free emulsion polymerization via a one-pot method has not been achieved. Herein, based on a styrene/ethanol-water (St/EtOH-H₂O) ternary system, a simple green self-templating dilu ...
... Five nickel chalcogenides have been studied and they showed high selectivity towards selective ethanol electro-oxidation to acetic acid. The activities of the different nickel chalcogenides are correlated with the Ni–Ni projected distances of the catalysts. ...
... The present work sought to implement a model different from the more traditional ones for the fermentation process of ethanol production by the action of the fungus Saccharomyces cerevisiae, using a relevant metabolic network based on the glycolytic Embden–Meyerhof–Parnas route, also called “EMP”. We developed two models to represent this phenomenon. In the first model, we used the simple and unbr ...
ethanol, etc ; Western blotting; models; phosphorylation; toxicity; Show all 5 Subjects
Abstract:
... The assay presented here was designed to assess the immediate effects of ethanol (EtOH) exposure on intracellular signaling activated by BMPs (Bone Morphogenetic Proteins). Previous reports of the relationship between EtOH exposure and BMP-dependent signaling have primarily assessed the expression of individual BMPs, changes in BMP target genes or effects on the phosphorylation level of key downst ...
ethanol, etc ; acetates; deprotonation; glucosamine; uranyl ions; Show all 5 Subjects
Abstract:
... Reaction of 1,3,4,6-tetra-O-acetyl-N-(2-hydroxy)-naphthylidene glucosamine (HL(Ac)) with uranyl acetate in ethanol leads to formation of dinuclear [(UO₂)₂(L)₂] (1). In a second step 1 is quantitatively transferred into the trinuclear oxo-bridged complex [(UO₂)₃(μ₃–O)(L)₃]²⁻ (2²⁻) via deprotonation and coordination of a water molecule. This transformation was followed by NMR and UV/Vis spectroscopy ...
... A novel, integrated process for the production of ethanol from lignocellulosic biomass is reported which involves simultaneous pretreatment, saccharification and fermentation using environmentally friendly technologies. The lignocellulosic biomass (8.33 g/L rice straw) was pretreated and saccharified with the anaerobic fungus Pecoramyces sp. F1, while the facultative anaerobic bacterium Zymomonas ...
... Alkaline pretreatment is a simple and effective method for removing lignin at low temperatures and normal pressure, but this process consumes large amounts of water and produces wastewater, both of which limit its industrial applications. To develop a process with zero discharge of black liquor and wastewater, in this study, KOH/urea-treated bagasse was directly subjected to enzymatic hydrolysis w ...
ethanol; ethanol production, etc ; Saccharomyces cerevisiae; Zymomonas mobilis; acetaldehyde; bioethanol; fermentation; liquids; saccharification; temperature; volatile compounds; yeasts; Eastern European region; Show all 13 Subjects
Abstract:
... Zymomonas mobilis and Saccharomyces cerevisiae have been used for simultaneous saccharification and fermentation of sorghum grain with the reuse of the stillage. This study investigated the effects of replacing half the water by a stillage liquid fraction on ethanol yield and volatile compound synthesis. Studies have shown that Z. mobilis is more efficient in ethanol production (55.96–61.48 g/L) t ...
ethanol, etc ; adsorption; alloy nanoparticles; electrochemistry; nanocatalysts; oxidation; Show all 6 Subjects
Abstract:
... Amorphous Pd–P metal–metalloid alloy nanoparticles showed a higher electrochemical ethanol oxidation reaction performance than crystalline Pd nanoparticles. The high performance was attributed to the rich defective coordination unsaturated sites and the P alloying, which enhanced the OH adsorption. ...
ethanol production, etc ; bioethanol; feedstocks; solid state fermentation; Show all 4 Subjects
Abstract:
... The inefficient food processing and food leftover management strategies often lead to the wastage of untapped carbohydrate-rich feedstocks. The conversion of these feedstocks into bioethanol can mitigate the emission of greenhouse gases (GHGs) while providing a sustainable and eco-friendly method for disposing of food wastes. In light of the above, the current review scrutinizes various types of f ...
ethanol, etc ; blood; data collection; forensic sciences; urine; Show all 5 Subjects
Abstract:
... This study aimed to compare the frequency of postmortem ethanol formation in blood, urine and vitreous humor according to negative ethylsulphate (EtS) in blood or positive putrefactive alcohols (PA’s) in either medium. Furthermore, it aimed to evaluate the interpretational value of calculated ethanol ratios in relation to EtS and PA results.Blood ethanol positive forensic cases were included; one ...