Results 11 to 20 of about 53,903 (231)

Effect of enhanced xylose reductase activity on xylose consumption and product distribution in xylose-fermenting recombinant [PDF]

open access: yesFEMS Yeast Research, 2003
Recombinant Saccharomyces cerevisiae TMB3001, harboring the Pichia stipitis genes XYL1 and XYL2 (xylose reductase and xylitol dehydrogenase, respectively) and the endogenous XKS1(xylulokinase), can convert xylose to ethanol. About 30% of the consumed xylose, however, is excreted as xylitol.
M JEPPSSON   +4 more
openaire   +5 more sources

Free Xylose in Fruits [PDF]

open access: yesNature, 1953
AN investigation of the carbohydrates present in the Victoria plum has revealed the presence of small amounts (c. 0.1 per cent fresh weight) of free xylose in the juice of ripe and immature fruits. The origin of this sugar is uncertain; it may arise from enzymic hydrolysis of a xyloside, but we consider this unlikely.
J G, HAY, J B, PRIDHAM
openaire   +2 more sources

Comparison of the xylose reductase-xylitol dehydrogenase and the xylose isomerase pathways for xylose fermentation by recombinant Saccharomyces cerevisiae [PDF]

open access: yesMicrobial Cell Factories, 2007
Abstract Background Two heterologous pathways have been used to construct recombinant xylose-fermenting Saccharomyces cerevisiae strains: i) the xylose reductase (XR) and xylitol dehydrogenase (XDH) pathway and ii) the xylose isomerase (XI) pathway.
Hahn-Hägerdal Bärbel   +3 more
openaire   +3 more sources

Simulating Extracellular Glucose Signals Enhances Xylose Metabolism in Recombinant Saccharomyces cerevisiae

open access: yesMicroorganisms, 2020
Efficient utilization of both glucose and xylose from lignocellulosic biomass would be economically beneficial for biofuel production. Recombinant Saccharomyces cerevisiae strains with essential genes and metabolic networks for xylose metabolism can ...
Meiling Wu   +8 more
doaj   +1 more source

PRODUCTION OF XYLOSE REDUCTASE AND XYLITOL BY Candida guilliermondii USING WHEAT STRAW HYDROLYSATES

open access: yesThe Iraqi Journal of Agricultural science, 2020
The objective of  this study is to evaluate the production of Xylose reductase (XR) and Xylitol by Candida guilliermondii using wheat straw hydrolysates (WSH) supplemented with 2.0 g/l of (NH4)2SO4 and 0.1 g/l of CaCl2.2H2O  as fermentation media . Wheat
Kklaif & et al.
doaj   +1 more source

Comparison of heterologous xylose transporters in recombinant Saccharomyces cerevisiae

open access: yesBiotechnology for Biofuels, 2010
Background Baker's yeast (Saccharomyces cerevisiae) has been engineered for xylose utilization to enable production of fuel ethanol from lignocellulose raw material. One unresolved challenge is that S.
Hahn-Hägerdal Bärbel   +2 more
doaj   +1 more source

Structure-based directed evolution improves S. cerevisiae growth on xylose by influencing in vivo enzyme performance

open access: yesBiotechnology for Biofuels, 2020
Background Efficient bioethanol production from hemicellulose feedstocks by Saccharomyces cerevisiae requires xylose utilization. Whereas S. cerevisiae does not metabolize xylose, engineered strains that express xylose isomerase can metabolize xylose by ...
Misun Lee   +4 more
doaj   +1 more source

Engineering xylose metabolism in thraustochytrid T18

open access: yesBiotechnology for Biofuels, 2018
Background Thraustochytrids are heterotrophic, oleaginous, marine protists with a significant potential for biofuel production. High-value co-products can off-set production costs; however, the cost of raw materials, and in particular carbon, is a major ...
Alexandra Merkx-Jacques   +10 more
doaj   +1 more source

Role of xylose from acidic hydrolysates of agave bagasse during biohydrogen production

open access: yesWater Science and Technology, 2021
This study compares the H2 production from glucose, xylose, and acidic hydrolysates of Agave tequilana bagasse as substrates. The fermentation was performed in a granular sludge reactor operated in two phases: (1) model substrates (glucose and xylose ...
Karla María Muñoz-Páez   +1 more
doaj   +1 more source

Fermentation of mixed glucose-xylose substrates by engineered strains of Saccharomyces cerevisiae: role of the coenzyme specificity of xylose reductase, and effect of glucose on xylose utilization

open access: yesMicrobial Cell Factories, 2010
Background In spite of the substantial metabolic engineering effort previously devoted to the development of Saccharomyces cerevisiae strains capable of fermenting both the hexose and pentose sugars present in lignocellulose hydrolysates, the ...
Klimacek Mario   +5 more
doaj   +1 more source

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