6 Cellulosic Ethanol
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. The isolation of pentose-assimilating yeasts and their xylose fermentation potential
ABSTRACT For the implementation of cellulosic ethanol technology, the maximum use of lignocellulosic materials is important to increase efficiency and to reduce costs. In this context, appropriate use of the pentose released by hemicellulose hydrolysis could improve de economic viability of this process. Since the Saccharomyces cerevisiae is unable to fermen
Braz. J. Microbiol.. Publicado em: 2018-03
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2. Production of fermentable sugars by combined chemo-enzymatic hydrolysis of cellulosic material for bioethanol production
To change the recalcitrant nature of the lignocellulosic material for maximum hydrolysis yield, a comprehensive study was done by using sulphuric acid as an exclusive catalyst for the pretreatment process. The enzymatic digestibility of the biomass [Water Hyacinth: Eichhornia crassipes] after pretreatment was determined by measuring the hydrolysis yield of t
Braz. J. Chem. Eng.. Publicado em: 2014-06
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3. Use of sorghum straw (Sorghum bicolor) for second generation ethanol production: pretreatment and enzymatic hydrolysis
Agronomic biomass yields of forage sorghum BRS 655 presented similar results to other energy crops, producing 9 to 12.6 tons/ha (dry mass) of sorghum straw. The objective of this study was to evaluate the lignocellulosic part of this cultivar in terms of its potential in the different unit processes in the production of cellulosic ethanol, measuring the effe
Quím. Nova. Publicado em: 2013
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4. Produção de celulases, purificação e caracterização bioquímico-cinética da β-galactosidase produzida por fungo isolado da região amazônica / Production of cellulases, purification and characterization of kinetic biochemical ß-galactosidase produced by fungus isolated from the Amazon.
The selection of cellulase-producing fungi is one of the possible estrategies for obtaining necessary enzymes to hydrolyze the lignocellulosic material of plant biomass and thereby contribute to the viability of cellulosic ethanol production. The aim of this study was achive a screening of isolated fungi from the Amazon region to assess the production of enz
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2012
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5. Caracterização estrutural das hemiceluloses de paredes celulares de cana-de-açúcar / Characterization of the sugarcane cell wall hemicelluloses
O Brasil, segundo maior produtor mundial de biocombustíveis, produz etanol a partir da extração e fermentação de sacarose de colmos de cana-de-açúcar. A utilização da energia presente nas ligações químicas entre os carboidratos da parede celular (celulose, hemiceluloses e pectina), das biomassas de folha e bagaço (hoje ambos considerados resídu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/06/2012
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6. Aproveitamento das fraÃÃes hemicelulÃsica e celulÃsica dos resÃduos do processamento do girassol para produÃÃo de bioetanol / Utilization of hemicellulosic and cellulosic fractions of waste from sunflower processing for bioethanol production
The researches on second generation ethanol, produced by agroindustrial wastes, have demanded special attention as a possible solution that can contribute to energy sustainability. Such production is based on lignocellulosic fiber conversion (cellulose and hemicellulose), which generates fermentable sugars that are biotransformed in bioethanol after some spe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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7. Caracterização da mobilização dos polissacarídeos da parede celular em palhada de cana de açúcar submetida às condições de campo. / Characterization of cell wall polysaccharides mobilization in sugarcane straw cell wall in the field.
O etanol celulósico a partir da palhada de cana pode elevar a produção do bioetanol, porém esta é normalmente decomposta no campo. A degradação da parede celular no campo não foi elucidada e compreender este processo auxiliará na produção de etanol celulósico. O objetivo deste trabalho foi caracterizar a degradação da palhada de cana de açúca
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/10/2011
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8. Pré-tratamento organossolve do bagaço de cana-deaçúcar para a produção de etanol e obtenção de xilooligômeros
Sugarcane bagasse is an abundant lignocelulosic byproduct, due to the high ethanol production from sugarcane juice, which turns this residue an attractive alternative for obtaining cellulosic ethanol and other products of higher value added. However, the use of bagasse requires a pre-treatment step for better use of its fractions. It was proposed in this stu
Publicado em: 2011
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9. Direct and Efficient Production of Ethanol from Cellulosic Material with a Yeast Strain Displaying Cellulolytic Enzymes
For direct and efficient ethanol production from cellulosic materials, we constructed a novel cellulose-degrading yeast strain by genetically codisplaying two cellulolytic enzymes on the cell surface of Saccharomyces cerevisiae. By using a cell surface engineering system based on α-agglutinin, endoglucanase II (EGII) from the filamentous fungus Trichoderma
American Society for Microbiology.
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10. Fermentation products and plant cell wall-degrading enzymes produced by monocentric and polycentric anaerobic ruminal fungi.
Five anaerobic fungal isolates from the bovine rumen were grown on Coastal Bermuda grass (CBG) leaf blades and monitored over a 9-day period for substrate utilization, fermentation products, cellulase, and xylanase activities. Two of the fungal isolates showed monocentric growth patterns; one (isolate MC-1) had monoflagellated zoospores and morphologically r