Thermophilic Process
Mostrando 1-12 de 44 artigos, teses e dissertações.
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1. Bioprospecting thermophiles for cellulase production: a review
Most of the potential bioprospecting is currently related to the study of the extremophiles and their potential use in industrial processes. Recently microbial cellulases find applications in various industries and constitute a major group of industrial enzymes. Considerable amount of work has been done on microbial cellulases, especially with resurgence of
Braz. J. Microbiol.. Publicado em: 2012-09
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2. Utilização de resíduos agroindustriais para a produção de proteases pelo termofílico Bacillus sp em fermentação submersa: otimização do meio de cultura usando a técnica de planejamento experimental
Thermophilic Bacillus sp. SMIA-2, produced protease when grown on apple pectic, whey protein and corn step liquor medium, whose concentration was varied from 3 to 10 gL-1, according to the central composite design 2³. The experiments were conducted in shaker, at 50 °C, 150 rpm and initial pH 6.5. The results revealed that the culture medium affected both,
Química Nova. Publicado em: 2010
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3. Campylobacter spp. no abate e varejo: ocorrência em carcaças de bovinos para exportação e em cortes refrigerados de aves e bovinos / Campylobacter spp. at slaughterhouse and retail: occurrence in bovine carcasses for exporting and refrigerated chicken and beef cuts
Campylobacter spp. infections are reported as a frequent cause of foodborne gastroenteritis in many countries. The thermophilic bacterial species belonging to the genus Campylobacter, particularly Campylobacter jejuni and Campylobacter coli have been isolated from feces of animals and are associated with the contamination of meat during the slaughtering proc
Publicado em: 2009
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4. Avaliação da contaminação por microorganismos esporulados e indicadores em requeijão cremoso / Microbiological evaluation of indicators and sporeforms in requeijão cream cheese
The objective of this research was to carry out a microbiological survey of Brazilian cream cheese ?Requeijão? ( pH 5,8 ), production line and to evaluate its shelf life, in relation to contamination by sporeformers and pathogens such as L. monocytogenes, coagulase positive S. aureus and Coliforms ( 45°C) and to determinate the microorganism(s), surviving
Publicado em: 2008
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5. Expressão heteróloga do gene Hxyn2 do fungo Humicola grisea var. thermoidea em Pichia pastoris: Produção e purificação da enzima HXYN2r e aplicação em testes de panificação / Heterologous expression of the gene Hxyn2 fungus Humicola grisea var. thermoidea in Pichia pastoris: production and purification of the enzyme HXYN2r testing and application in bakery
Endoxylanases are the main group of enzymes involved in the hydrolysis of xylan. This enzymes have application in industrial proposes, like as drink, food, feed, clothes industries and for bleaching cellulose paper pulps. In bread making the xylanases have been used to improve processing and product quality of loaf, leading soft dough and loaf with larger vo
Publicado em: 2008
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6. Filtro anaeróbio ascendente combinado com reator aeróbio de lodos ativados em batelada no tratamento de água residuária sintética de indústria de polpa celulósica não branqueada sob condições termofílicas / Upflow anaerobic filter combined with aerobic reactor of activated sludge in batch treating of synthetic wastewater from unbleached cellulose pulp plant under thermophilic conditions
Um sistema combinado anaeróbio-aeróbio composto de um filtro anaeróbio ascendente seguido de reator aeróbio de lodos ativados em batelada, foi continuamente alimentado com água residuária sintética da indústria de polpa celulósica não branqueada, durante o período de trezentos e sessenta e três dias, com o objetivo de verificar o desempenho dos r
Publicado em: 2007
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7. Estrutura, termoestabilidade e atividade de xilanases: um estudo via simulação molecular / Structure, thermostability and activity of xylanases: a molecular dynamics study
The enzymes xylanases (EC 3.2.1.8) are produced by several microorganisms and used to hydrolyze the -1,4 bonds of the xylan main chain, the most abundant hemicellulose in nature. The great biotechnological potential of the xylanases is due to its application in the pulp-bleaching processes when the xylan is hydrolyzed under high temperature condition to opti
Publicado em: 2007
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8. Tratamento anaeróbio de efluentes de máquina de papel por biorreator convencional e biorreator de membranas / Anaerobic treatment of paper machine effluents by conventional bioreactor and membrane bioreactor
Fresh water use in paper mills varies according to the type of paper produced, but it can be as high as 100 m3 per ton of paper. In order to reduce water use in paper mills, the reclamation of whitewater is an attractive option. However, it is not always possible to completely recover the whitewater in a closed-cycle manner due to the poor quality of this st
Publicado em: 2007
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9. Tratamento de vinhaça em reator anaeróbio operado em batelada seqüencial contendo biomassa imobilizada sob condições termofílicas e mesofílicas / Vinasse treatment in anaerobic sequencing batch reactor with immobilized biomass under thermophilic and mesophilic conditions
In this work, the viability of the thermophilic (55 Celsius degrees) and mesophilic (35 Celsius degrees) anaerobic treatment of sugar cane vinasse in an anaerobic sequencing batch reactor containing immobilized biomass (ASBBR) was evaluated. The reactor was filled with polyurethane foam matrices inoculated with a granular sludge taken from an UASB reactor tr
Publicado em: 2006
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10. Anaerobic treatment of vinasse in a UASB reactor under thermophilic conditions (55°C) and submitted to progressive organic loadings / Tratamento anaeróbio de vinhaça em reator UASB operado em temperatura na faixa termofílica (55ºC) e submetido ao aumento progressivo de carga orgânica
Este projeto de pesquisa visou à investigação do desempenho do reator UASB (10 L de volume) no tratamento da vinhaça quando submetido a aumento progressivo da carga orgânica em condições termofílicas. A carga orgânica afluente média foi de 2,79 gDQO/L.dia (desvio de 1,5 gDQO/L.dia) e média efluente bruto de 1,24 gDQO/L.dia (desvio de 0,93 gDQO/L.d
Publicado em: 2006
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11. Effect of the concentration of nitrogen, inoculants and composting methods for the cultivation of Agaricus blazei / Efeito do Teor de NitrogÃnio, Inoculantes e MÃtodos de Compostagem para Cultivo de Agaricus blazei.
The conventional process composting for the cultivation of Agaricus blazei mushroom requires the utilization of pasteurization/conditioning tunnel to eliminate the excess of ammonia from the compost. For the production without this system, special conditions must be established to avoid the presence of ammonia on the final compost. The aim of this project wa
Publicado em: 2006
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12. Development of thermal process otmized for mosto sugar canes in alcoholic fermentation / Desenvolvimento de processo termico otimizado para mosto de caldo de cana na fermentação alcoolica
In this research is proposed a thermal treatment process for sugar cane must with maximum retention of fermentable sugar (sucrose, glucose and fructose), to promote a thermal inactivation of its bacterial contaminants and therefore, those of alcoholic fermentation. With this objective were examined the thermo degradation kinetics of sucrose, glucose, fructos
Publicado em: 2005