Fermentable Sugars
Mostrando 13-24 de 57 artigos, teses e dissertações.
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13. 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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14. Utilization of molasses and sugar cane bagasse for production of fungal invertase in solid state fermentation using Aspergillus niger GH1
Agro-industrial wastes have been used as substrate-support in solid state fermentation for enzyme production. Molasses and sugarcane bagasse are by-products of sugar industry and can be employed as substrates for invertase production. Invertase is an important enzyme for sweeteners development. In this study, a xerophilic fungus Aspergillus niger GH1 isolate
Braz. J. Microbiol.. Publicado em: 2014-06
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15. Pretreatment strategies for delignification of sugarcane bagasse: a review
The valorization of agro-residues by biological routes is a key technology that contributes to the development of sustainable processes and the generation of value-added products. Sugarcane bagasse is an agro-residue generated by the sugar and alcohol industry in Brazil (186 million tons per year), composed essentially of cellulose (32-44%), hemicellulose (2
Braz. arch. biol. technol.. Publicado em: 2013-08
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16. Caracterização bioquímica e biofísica da Celobiohidrolase II do fungo Trichoderma harzianum IOC3844 produzida por expressão homóloga / Biochemical and biophysical characterization of cellobiohydrolase II from Trichoderma harzianum IOC 3844 produced by homologous expression
The depletion of reserves, especially of refined oil , with increased energy demands and the urgent need to reduce the carbon emissions on the atmosphere, signals the necessity to search for new sources of energy renewable and clean. Concerns about global warming have led to an increased world interest in biofuels. The new concept of second generation biofue
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2012
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17. 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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18. Potencial da palha de cana-de-açúcar para produção de etanol
Sugarcane straw biomass accounts for 1/3 of the energy potential of sugarcane and represents a rich source of sugars. Studies have been intensified for the use of this biomass along with bagasse for the production of cellulosic ethanol. Development of this technological path will allow for taking full advantage of sugarcane, increasing ethanol production wit
Química Nova. Publicado em: 2012
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19. Enzymatic hydrolysis of sugarcane bagasse pretreated with acid or alkali
The aim of this study was to evaluate the performance of enzymatic hydrolysis of acid or alkali pretreated sugarcane bagasse for the production of fermentable sugars. The first step consisted of selection of commercial enzymes presenting the highest cellulolytic activities. After selection of four enzymes: HPL, CL, P1 and P4, their performances were tested i
Brazilian Archives of Biology and Technology. Publicado em: 2011-04
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20. Pequi cake composition, hydrolysis and fermentation to bioethanol
Pequizeiro (Caryocar brasiliense Camb) fruits have been evaluated as a potential raw material for the newly established biodiesel industry. This scenario demands applications using the solid co-product derived from the extraction of pequi oil, called cake or meal. This study analyses the acid hydrolysis of carbohydrates present in the pequi meal in order to
Brazilian Journal of Chemical Engineering. Publicado em: 2011-03
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21. Produção de bioetanol a partir de resíduos agroindustriais
Concerns about global warming and the depletion of petroleum cause the search for alternative fuels from renewable sources. The current study aims at obtaining bioethanol from fermentable sugars extracted from hydrolyzed residues in situ by solid-state fermentation (SSF). The first stage was the SSF for the hydrolysis of the culture medium which is composed
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/12/2010
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22. Pre-treatment and enzymatic hydrolysis of sugar cane bagasse / Pré-tratamento e hidrólise enzimática do bagaço de cana-de-açúcar
In this work the production of fermentable sugars from sugar cane bagasse pretreated with diluted sulfuric acid and phosphoric acid and delignified with NaOH was estudied. 23 Factorial designs were performed to evaluate the influence of pretreatment time (h), temperature (°C) and acid concentration (H2SO4 or H3PO4). After pretreatment bagasse was delignifie
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/06/2010
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23. Estudo de consórcios microbianos na degradação da celulose / Study of microbial consortia on the degradation of cellulose
A biomassa lignocelulósica é a fonte de energia renovável mais abundante no planeta, sendo fonte de açúcares que podem ser fermentados para a obtenção de etanol. No entanto, devido a sua alta recalcitrância, poucos microrganismos conseguem hidrolisar a celulose com alta eficiência. Na natureza, esta degradação é realizada por diferentes espécies
Publicado em: 2010
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24. Avaliação do potencial da casca de Eucalyptus spp. para a produção de bioetanol / Evaluation of the potential use of Eucalyptus spp. bark for bioethanol production
The use of no fossil source for biofuels production has been stimuled in the all world. Proposing a new global scenario related to the energy matrix, together with the environmental conditions, there is the need to search alternative renewable raw materials. In this context, Brazil presents special conditions, considering the lignocellulosic residues from th
Publicado em: 2010