Results 191 to 200 of about 24,546 (228)

Repeated-batch fermentations of xylose and glucose–xylose mixtures using a respiration-deficient Saccharomyces cerevisiae engineered for xylose metabolism

Journal of Biotechnology, 2010
Xylose-fermenting Saccharomyces strains are needed for commercialization of ethanol production from lignocellulosic biomass. Engineered Saccharomyces cerevisiae strains expressing XYL1, XYL2 and XYL3 from Pichia stipitis, however, utilize xylose in an oxidative manner, which results in significantly lower ethanol yields from xylose as compared to ...
Soo Rin Kim, Suk-Jin Ha, Dae-Hyuk Kweon   +2 more
exaly   +3 more sources

Yeast xylose metabolism and xylitol production: Dissertation

, 1994
A screening method was used for testing yeast strains in shake flask cultivations for their ability to convert xylose to xylitol. Of the 37 different strains studied by far the best were Candida guilliermondii C-6, C. tropicalis C-86 and C. tropicalis C-87.
Ojamo, Heikki
openaire   +3 more sources

Influence of glucose on xylose metabolization by Spathaspora passalidarum

Fungal Genetics and Biology, 2021
The yeast Spathaspora passalidarum is able to produce ethanol from D-xylose and D-glucose. However, it is not clear how xylose metabolism is affected by D-glucose when both sugars are available in the culture medium. The aims of this work were to evaluate the influence of D-glucose on D-xylose consumption, ethanol production, gene expression, and the ...
Lílian E, Ribeiro, Fernanda M, Albuini, Alex G, Castro, Valquíria J, Campos, Gilza B, de Souza, João G P, Mendonça, Carlos A, Rosa, Tiago A O, Mendes, Mateus F, Santana, Wendel B, da Silveira, Luciano G, Fietto   +10 more
openaire   +2 more sources

Metabolic flux analysis of xylose metabolism in recombinant Saccharomyces cerevisiae using continuous culture

Metabolic Engineering, 2003
This study focused on elucidating metabolism of xylose in a Saccharomyces cerevisiae strain that overexpresses xylose reductase and xylitol dehydrogenase from Pichia stipitis, as well as the endogenous xylulokinase.
Juha-Pekka Pitkänen, Laura Salusjärvi, Laura Ruohonen   +2 more
exaly   +2 more sources

Metabolism of D-Xylose by Moulds

Nature, 1960
THE filamentous fungi have been called ubiquitous and omnivorous, and certainly they are widely distributed in Nature where they play a most important part in the decomposition of complex organic matter and as pathogens for many plants. Since much of the plant-derived organic matter in Nature contains a large amount of pentoses, mostly in the form of ...
C, CHIANG, S G, KNIGHT
openaire   +2 more sources

Xylose chemostat isolates of Saccharomyces cerevisiae show altered metabolite and enzyme levels compared with xylose, glucose, and ethanol metabolism of the original strain

Applied Microbiology and Biotechnology, 2005
The efficient conversion of xylose-containing biomass hydrolysate by the ethanologenic yeast Saccharomyces cerevisiae to useful chemicals such as ethanol still remains elusive, despite significant efforts in both strain and process development.
Juha-Pekka Pitkänen, Eija Rintala, Laura Ruohonen   +2 more
exaly   +2 more sources

Deciphering bacterial xylose metabolism and metabolic engineering of industrial microorganisms for use as efficient microbial cell factories

Applied Microbiology and Biotechnology, 2018
The goal of sustainable production of biochemicals and biofuels has driven the engineering of microbial cell as factories that convert low-value substrates to high-value products.
Han Min Woo, Kim Donghyuk, Woo Han Min
exaly   +2 more sources

Metabolic Control Analysis of Xylose Catabolism in Aspergillus

Biotechnology Progress, 2008
A kinetic model for xylose catabolism in Aspergillus is proposed. From a thermodynamic analysis it was found that the intermediate xylitol will accumulate during xylose catabolism. Use of the kinetic model allowed metabolic control analysis (MCA) of the xylose catabolic pathway to be carried out, and flux control was shown to be dependent on the ...
Prathumpai, W., Gabelgaard, J.B., Wanchanthuek, P., van de Vondervoort, P.J.I., de Groot, M.J.L., McIntyre, M., Nielsen, J.   +6 more
openaire   +3 more sources

Engineering yeasts for xylose metabolism

Current Opinion in Biotechnology, 2006
Technologies for the production of alternative fuels are receiving increased attention owing to concerns over the rising cost of petrol and global warming. One such technology under development is the use of yeasts for the commercial fermentation of xylose to ethanol. Several approaches have been employed to engineer xylose metabolism.
openaire   +2 more sources

Xylose metabolism in genetic variants of Salmonella typhosa

Archives of Biochemistry and Biophysics, 1957
Abstract Evidence has been presented which establishes steps in the route of xylose utilization in certain strains of S. typhosa . The failure of the negative strain to metabolize d -xylose stems from its inability to form the enzyme, xylose isomerase, and the enzyme, xylulokinase. The positive strain of S.
L S, BARON, E S, KLINE
openaire   +2 more sources