Results 301 to 310 of about 124,197 (335)
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Xylose absorption test using D-xylose-14C
Clinical Biochemistry, 1972Summary 1. D-xylose-14C was used to measure oral xylose absorption in the investigation of malabsorption syndromes. The concentration of D-xylose-14C present in the 1 and 2 hour serum samples and the quantity of D-xylose and D-xylose-14C excreted in the urine in 5 hours were used as indices of xylose absorption. 2.
D M, Lyster +4 more
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Journal of Clinical Gastroenterology, 1999
The literature on D-xylose testing has been reviewed, stressing advances in our understanding of absorption in general (including D-xylose absorption), the relationship of D-xylose testing to the development of excellent serologic tests for the diagnosis of celiac disease, the use of D-xylose testing in the evaluation of diarrhea in acquired ...
R M, Craig, E D, Ehrenpreis
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The literature on D-xylose testing has been reviewed, stressing advances in our understanding of absorption in general (including D-xylose absorption), the relationship of D-xylose testing to the development of excellent serologic tests for the diagnosis of celiac disease, the use of D-xylose testing in the evaluation of diarrhea in acquired ...
R M, Craig, E D, Ehrenpreis
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Applied Biochemistry and Biotechnology, 1989
The economic impact of conversion of xylose to ethanol for a wood-to-ethanol plant was examined, and the maximum potential reduction in the price of ethanol from utilization of xylose is estimated to be $0.42 per gallon from a base case price of $1.65.
Norman D. Hinman +3 more
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The economic impact of conversion of xylose to ethanol for a wood-to-ethanol plant was examined, and the maximum potential reduction in the price of ethanol from utilization of xylose is estimated to be $0.42 per gallon from a base case price of $1.65.
Norman D. Hinman +3 more
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Solvent production from xylose
Applied Microbiology and Biotechnology, 2018Xylose is the second most abundant sugar derived from lignocellulose; it is considered less desirable than glucose for fermentation, and strategies that specifically increase xylose utilization in wild type or engineered cells are goals for biofuel production.
Kevin T. Finneran, Jovan Popovic
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Xylose fermentation by Saccharomyces cerevisiae using endogenous xylose-assimilating genes
Biotechnology Letters, 2015To genetically engineer Saccharomyces cerevisiae for improved ethanol productivity from glucose/xylose mixtures.An endogenous gene cassette composed of aldose reductase (GRE3), sorbitol dehydrogenase (SOR1) and xylulose kinase (XKS1) with a PGK1 promoter and a terminator was introduced into two S.
Jin, Konishi +3 more
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Evolution in Reverse: Engineering a
Xylitol (1) is a pentitol and is used not only as a sweetener but also as a platform chemical for the production of industrially important chemicals. As a sweetener, it has been shown to possess several favorable properties in comparison to other sugar substitutes, such as anticariogenicity, good gastrointestinal tolerance, low caloric content, and ...
Nikhil U, Nair, Huimin, Zhao
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Xylose isomerases from Thermotoga
2001Publisher Summary Typically present in microorganisms that grow on xylose, xylose isomerise (XI) converts xylose to xylulose, which is then phosphorylated and enters the pentose-phosphate pathway. Because it also accepts glucose as substrate, XI is used extensively to isomerize glucose to fructose in the manufacture of high fructose corn syrup (HFCS).
C, Vieille +3 more
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Journal of Biotechnology, 2012
Efficient conversion of xylose to ethanol is an essential factor for commercialization of lignocellulosic ethanol. To minimize production of xylitol, a major by-product in xylose metabolism and concomitantly improve ethanol production, Saccharomyces cerevisiae D452-2 was engineered to overexpress NADH-preferable xylose reductase mutant (XR(MUT)) and ...
Sung-Haeng, Lee +3 more
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Efficient conversion of xylose to ethanol is an essential factor for commercialization of lignocellulosic ethanol. To minimize production of xylitol, a major by-product in xylose metabolism and concomitantly improve ethanol production, Saccharomyces cerevisiae D452-2 was engineered to overexpress NADH-preferable xylose reductase mutant (XR(MUT)) and ...
Sung-Haeng, Lee +3 more
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2021
Lignocellulosic (LC) feedstock is the most economical and renewable natural feedstock of chemicals and energy. It is primarily composed of lignin, cellulose, and hemicellulose which are woven together and render the biomass recalcitrant to degradation.
Rozina Rashid +2 more
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Lignocellulosic (LC) feedstock is the most economical and renewable natural feedstock of chemicals and energy. It is primarily composed of lignin, cellulose, and hemicellulose which are woven together and render the biomass recalcitrant to degradation.
Rozina Rashid +2 more
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Repression of xylose utilization by glucose in xylose-fermenting yeasts
Canadian Journal of Microbiology, 1988The xylose-fermenting yeasts Pichia stipitis, Candida steatolytica, and Candida shehatae were subjected to fermentations in synthetic media containing mixtures of glucose and xylose. In all cases, repression of xylose uptake by glucose was observed, although the extent of repression was different with each yeast.
Chandra J. Panchal +3 more
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