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| Registros recuperados: 15 | |
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| FAVARO, L. C. de L.; MELO, I. S. de; QUIRINO, B. F.; OLIVEIRA, A. C. B.; MENDES, T. D.; SALUM, T. F. C.; RODRIGUES, D. S.; SOUZA, G. P.; FRANCO, P. F.; QUECINE, M. C.. |
| Tipo: Separatas |
Palavras-chave: Bactéria; Microbial communities; Lignocellulose. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1010904 |
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| ALESSI, A. M.; BIRD, S. M.; OATES, N. C.; LI, Y.; DOWLE, A. A.; NOVOTNY, E. H.; AZEVEDO, E. R. de; BENNETT, J. P.; POLIKARPOV, I.; YOUNG, J. P. W.; MCQUEEN-MASON, S. J.; BRUCE, N. C.. |
| Background: Lignocellulose is one of the most abundant forms of fixed carbon in the biosphere. Current industrial approaches to the degradation of lignocellulose employ enzyme mixtures, usually from a single fungal species, which are only effective in hydrolyzing polysaccharides following biomass pre-treatments. While the enzymatic mechanisms of lignocellulose degradation have been characterized in detail in individual microbial species, the microbial communities that efficiently breakdown plant materials in nature are species rich and secrete a myriad of enzymes to perform "community-level" metabolism of lignocellulose. Single-species approaches are, therefore, likely to miss important aspects of lignocellulose degradation that will be central to... |
| Tipo: Artigo de periódico |
Palavras-chave: CAZy; Metasecretome; Lignocellulose. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1099501 |
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| Romero Yam, Lourdes Alejandra. |
| Se estudió la dinámica microbiana y el contenido de nitrógeno mineral y total durante el proceso de compostaje de cachaza reactivada con gallinaza. Se evaluaron cuatro tratamientos con diferentes proporciones de cachaza y gallinaza (10:0, 9:1, 7:3 y 5:5), en contenedores de 68 L durante 87 días. Las variables evaluadas fueron: temperatura, poblaciones de bacterias, hongos, microorganismos ligninolíticos, evolución de CO2, nitrógeno total, amonio y nitratos. La adición de gallinaza a la cachaza almacenada, incrementó las poblaciones de bacterias, hongos y microorganismos ligninolíticos, estos grupos microbianos mostraron poblaciones de 9.9, 5.5 y 6.4 unidades logarítmicas (ULog), respectivamente. El tratamiento 5:5 presentó una disminución en NH+4 –N (de... |
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Palavras-chave: Ecología microbiana; Lignocelulosa; Biotransformación de cachaza; Compost; Microbial ecology; Lignocellulose; Biotransformation of filter cake; Compost; Maestría; Edafología. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2093 |
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| HERRERA, C. R. J.; VIEIRA, V. R.; BENOLIEL, T.; CARNEIRO, C. V. G. C.; MARCO, J. L. de; MORAES, L. M. P. de; ALMEIDA, J. R. M. de; TORRES, F. A. G.. |
| Sugarcane bagasse is an agricultural residue rich in xylose, which may be used as afeedstock for the production of high-value-added chemicals, such as xylonic acid, an organic acid listed as one of the top 30 value-added chemicals on a NREL report. Here, Zymomonas mobilis was engineered for the first time to produce xylonic acid from sugarcane bagasse hydrolysate. Seven coding genes for xylose dehydrogenase (XDH) were tested. The results show that Z. mobilis may be regarded as a potential platform for the production of organic acids from cheap lignocellulosic biomass in the context of biorefineries. |
| Tipo: Artigo de periódico |
Palavras-chave: Xylose; Biomass; Lignocellulose; Zymomonas. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1134099 |
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| Westman,Johan O; Taherzadeh,Mohammad J; Franzén,Carl Johan. |
| Background: Robust second generation bioethanol processes require microorganisms able to ferment inhibitory lignocellullosic hydrolysates. In this study, the inhibitor tolerance and flocculation characteristics of Saccharomyces cerevisiae CCUG53310 were evaluated in comparison with S. cerevisiae CBS8066. Results: The flocculating strain CCUG53310 could rapidly ferment all hexoses in dilute acid spruce hydrolysate, while CBS8066 was strongly inhibited in this medium. In synthetic inhibitory media, CCUG53310 was more tolerant to carboxylic acids and furan aldehydes, but more sensitive than CBS8066 to phenolic compounds. Despite the higher tolerance, the increase in expression of the YAP1, ATR1 and FLR1 genes, known to confer resistance to... |
| Tipo: Journal article |
Palavras-chave: Biofuel; Furfural; Lignocellulose; Phenolic inhibitors; Saccharomyces cerevisiae. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000300005 |
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| ALMEIDA, J. R. M. de; WIMAN, M.; HEER, D.; BRINK, D. P.; SAUER, UWE; HAHN‐HÄGERDAL, B.; LIDÉN, G.; GORWA‐GRAUSLUND, M. F.. |
| Economically feasible bioethanol process from lignocellulose requires efficient fermentation by yeast of all sugars present in the hydrolysate. However, when exposed to lignocellulosic hydrolysate, Saccharomyces cerevisiae is challenged with a variety of inhibitors that reduce yeast viability, growth, and fermentation rate, and in addition damage cellular structures. In order to evaluate the capability of S. cerevisiae to adapt and respond to lignocellulosic hydrolysates, the physiological effect of cultivating yeast in the spruce hydrolysate was comprehensively studied by assessment of yeast performance in simultaneous saccharification and fermentation (SSF), measurement of furaldehyde reduction activity, assessment of conversion of phenolic compounds and... |
| Tipo: Artigo de periódico |
Palavras-chave: Lignocellulose; Phenolic compounds; Transcriptomics; Microarray technology; Industrial microbiology. |
| Ano: 2023 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1151045 |
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| PAES, B. G.. |
| Resumo: Komagataella phaffii, anteriormente conhecida como Pichia pastoris, é um organismo modelo comummente usado na pesquisa e na indústria. Tem sido considerada para a produção de produtos de alto valor agregado, especialmente proteínas. Suas aplicações biotecnológicas envolvem principalmente a utilização de fontes clássicas de carbono como glicose, glicerol, sorbitol e metanol, embora muitos outros substratos também tenham sido pesquisados. As biomassas lignocelulósicas são ricas em açúcares fermentáveis, como a xilose, o segundo açúcar mais abundante na natureza, que pode ser usado para a produção de produtos químicos renováveis. No entanto, a utilização microbiana da xilose depende da capacidade inata de utilização desta pelo microrganismo, e de sua... |
| Tipo: Teses |
Palavras-chave: Xilase; Ácido Acético; Furaldeídos; Transcritoma; Komagataella phaffii; Xylose; Pichia pastoris; Lignocellulose; Acetic acid; Transcriptome. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137351 |
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| Petrolia, Daniel R.. |
| Corn stover harvest and transport cost functions were estimated for two harvest operations for a proposed biomass-to-ethanol conversion facility located in southern Minnesota, USA. This work presents an alternative methodology to estimating corn stover quantities and harvest costs at the county level, taking into account county-specific yields, transportation distances, erosion constraints, machinery specifications, and other key variables. Monte Carlo simulation was also used to estimate the probability distribution of costs under alternative assumption on key parameters whose values vary widely in the literature. Marginal stover cost for 50MM gal/year of ethanol output was estimated at $54/dt ($0.77/gal ethanol) for the more intensive harvest method... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Biomass; Corn stover; Economics; Ethanol; Lignocellulose; Monte Carlo; Crop Production/Industries; Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/14213 |
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| Registros recuperados: 15 | |
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