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Topic: Xylose

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	Xylose (Site not responding. Last check: 2007-11-06)
		Xylose is an essential sugar saccharide of the pentose class and vital to cellular communication.
		Xylose is absorbed from the jejunum area of the small intestine by a mechanism that is different than the transporter for glucose.
		Xylose is an antibacterial and antifungal, particularly with gram negative organisms and Candida.
	www.innvista.com /health/nutrition/essensug/xylose.htm (419 words)

	Xylose Glyconutrient Information
		Xylose is one of the eight essential sugars needed to optimal health and functioning in humans.
		Xylose is absorbed in the small intestine where it also increases the friendly flora helping for all other nutrients to be absorbed more efficiently as well.
		Xylose can also be found in the kidneys, muscles and fat where it is needed most in the human body.
	www.glyconutrient.biz /xylose.htm (318 words)

	Genetic Engineering of Xylose Fermenting Yeasts
		Xylose is relatively easily recovered by acid or enzymatic hydrolysis, but can be fermented to ethanol only by a few naturally-occurring or recombinant microbes.
		stipitis are inducible by xylose and repressible by glucose[5].
		cerevisiae of the NAD(P)H-dependent xylose reductase encoding gene (XYL1) from the xylose-assimlating yeast, Pichia stipitis.
	www2.biotech.wisc.edu /jeffries/bioprocessing/xoferm/xoferm.html (4008 words)

	Xylose - Wikipedia, the free encyclopedia
		Xylose or wood sugar is an aldopentose — a monosaccharide containing five carbon atoms and including an aldehyde functional group.
		Xylose is found in the embryos of most edible plants.
		It is said to be one of eight sugars which are essential for human nutrition, the others being galactose, glucose, mannose, N-acetylglucosamine, N-acetylgalactosamine, fucose, and sialic acid (formally, N-acetylnuraminic acid).
	en.wikipedia.org /wiki/Xylose (123 words)

	GRE3 - Aldose reductase involved in methylglyoxal, d-xylose and arabinose metabolism; stress induced (osmotic, ionic, ...
		Xylose reductase catalyzes the NAD(P)H-dependent reduction of xylose to xylitol and is essential for growth on xylose by yeasts.
		The xylose reductase gene (XYL1) was isolated from Pichia stipitis and Candida shehatae, cloned into YEp-based vectors under the control of ADH2 and PGK1 promoter/terminator cassettes and introduced into Saccharomyces cerevisiae Y294 by electroporation.
		This study focused on the recovery and characterization of xylose chemostat isolates of a S. cerevisiae strain that overexpresses xylose reductase- and xylitol dehydrogenase- encoding genes from Pichia stipitis and the gene encoding the endogenous xylulokinase.
	www.ihop-net.org /UniPub/iHOP/gi/36495.html (1520 words)

	xylose
		Other processes use the whole lignocellulosic material such as oat hulls or corn cobs, from which the xylose is leached in a slow mild acid hydrolysis.
		The xylose sugars are then cleaned up and hydrolyzed in strong acid at high temperatures and pressure to make the conversion to furfural.
		Finally, it is well proven that the xylose sugars can substitute for glucose as a fermentation substrate to produce products such as penicillin and brewer's yeast as well as biodegradable plastic polymers, acetic acid and lactic acid.
	www.compusmart.ab.ca /tigney/xylose.htm (333 words)

	Xylose Tolerance Test (Fasting + 1-Hour Blood + 5-Hour Urine – Pediatric)
		Xylose is a pentose found naturally occurring in certain fruits such as plums.
		It is not normally found in significant concentrations in blood or urine thereby rendering the duodenojejunal absorption of d-xylose a useful mechanism to assess the integrity of the gastrointestinal mucosa.
		Urine values for xylose excretion are useful in determining renal insufficiency.
	www.labcorp.com /datasets/labcorp/html/chapter/mono/sc007300.htm (524 words)

	Microbial Cell Factories \| Full text \| Co-utilization of L-arabinose and D-xylose by laboratory and industrial ...
		Xylose and arabinose fermentation by strain BWY02.XA was independently investigated in anaerobic batch fermentation in defined mineral medium containing either 20 g/l glucose and 20 g/l xylose or 20 g/l glucose and 20 g/l arabinose (Table 2, Figure 4A–B).
		Co-fermentation of arabinose and xylose was studied by performing anaerobic batch fermentation using a mixture of 20 g/l glucose, 20 g/l xylose and 20 g/l arabinose as carbon sources.
		Co-utilization of arabinose and xylose was demonstrated with the laboratory strain BWY02.XA carrying the arabinose and the xylose pathways.
	www.microbialcellfactories.com /content/5/1/18 (5783 words)

	Food/Seed Oils
		Xylose is the second most abundant carbohydrate in terrestrial plants and it is particularly abundant in the lignocellulose of angiosperms, which comprise the majority of agricultural and silvicultural crops.
		Xylose is relatively easy to recover from agricultural lignocellulose, but its bioconversion to ethanol is difficult.
		Heterologous expression of xylose reductase (XYL1) and xylitol dehydrogenase (XYL2) along with D-xylulokinase (XYL3) will impart the capacity for growth on xylose, but the resulting cells do not recognize xylose as a fermentable carbon source, and they attempt to oxidize it.
	www.metabolicengineering.gov /tjeffries.html (723 words)

	Xylose Absorption Test (Adult - 25 g dose)
		Record the xylose dose given and the total volume of the five-hour urine on the test request form.
		Record the total volume and xylose dose given on the urine aliquot tube.
		The xylose absorption test evaluates carbohydrate absorption by the mucosa of the proximal small intestine.
	www.aruplab.com /guides/ug/tests/0020609.jsp (470 words)

	InterPro: IPR001998 Xylose isomerase
		Xylose isomerase (EC:5.3.1.5) [ 1 ] is an enzyme found in microorganisms which catalyzes the interconversion of D-xylose to D-xylulose.
		Xylose isomerase also exists in plants [ 3 ] where it is homodimeric and is manganese-dependent.
		Fenn T.D. Ringe D. Petsko G.A. Xylose isomerase in substrate and inhibitor michaelis states: atomic resolution studies of a metal-mediated hydride shift.
	www.ebi.ac.uk /interpro/IEntry?ac=IPR001998 (3110 words)

	Evolutionary Engineering of Saccharomyces cerevisiae for Anaerobic Growth on Xylose -- Sonderegger and Sauer 69 (4): ... (Site not responding. Last check: 2007-11-06)
		The glucose and xylose consumption phases are indicated by I and II, respectively.
		Yields of acetate (A) and glycerol (B) on glucose (solid bars) and xylose (open bars) during anaerobic growth on 50 g of glucose per liter and 50 g of xylose per liter for TMB3001 and selected clones from both phenotypic classes.
		Strictly anaerobic growth rates on xylose minimal medium for 20 clones that were isolated after seven serial anaerobic batch cultures on xylose.
	aem.asm.org /cgi/content/full/69/4/1990 (5078 words)

	Direct fermentation of D-xylose to ethanol by a xylose-fermenting yeast mutant - Patent 4511656
		After incubation additional xylose was added (5%, wt/v) and the fermentation was carried out either under non-aerated or shaking conditions for 48 hrs at 30.degree.
		As shown in Table 2 below, the mutant strains did ferment xylose to ethanol, while the parent strain is unable to produce ethanol from xylose in high yields.
		As shown in Table 3 below, the mutant strains ferment xylose to ethanol while the parent strain is unable to produce ethanol from xylose.
	freepatentsonline.com /4511656.html (2931 words)

	Characterization of the xylose-transporting properties of yeast hexose transporters and their influence on xylose ...
		Yeast transformants were pregrown in synthetic medium without uracil and with 2% maltose, washed twice and inoculated in synthetic medium without uracil and with 2% xylose at an initial OD of about 0·35 (a) or 0·25 (b).
		Xylose uptake was measured for 1 min with 50 mM D-[U- C]xylose.
		Meinander, N. and Hahn-Hägerdal, B. Influence of cosubstrate concentration on xylose conversion by recombinant, XYL1-expressing Saccharomyces cerevisiae: a comparison of different sugars and ethanol as cosubstrates.
	mic.sgmjournals.org /cgi/content/full/148/9/2783 (2861 words)

	Essential Sugar \| Xylose \| Essential Nutrition
		Xylose is another Essential Nutrient and is also an essential sugar saccharide of the pentose class and may be vital to cell to cell communication.
		For diabetics and people watching their sugar intake, companies often substitute xylose for sucrose and corn sweeteners in such things as chewing gum and toothpaste.
		Xylose is not to be confused with Xylito which is not an essential sugar but a sugar alcohol.
	www.essential-sugar.com /xylose.htm (372 words)

	Genetically Engineered Saccharomyces Yeast Capable of Effective Cofermentation of Glucose and Xylose -- Ho et al. 64 ... (Site not responding. Last check: 2007-11-06)
		Xylose is one of the major fermentable sugars present in cellulosic biomass, second only to glucose.
		xylose to ethanol and to use xylose for aerobic growth.
		Cofermentation of glucose and xylose or fermentation of xylose by yeasts.
	aem.asm.org /cgi/content/full/64/5/1852 (5406 words)

	Xylose Reductase from the Basidiomycete Fungus Cryptococcus flavus: Purification, Steady-State Kinetic ...
		Xylose Reductase from the Basidiomycete Fungus Cryptococcus flavus: Purification, Steady-State Kinetic Characterization, and Detailed Analysis of the Substrate Binding Pocket Using Structure-Activity Relationships -- Mayr et al.
		Xylose Reductase from the Basidiomycete Fungus Cryptococcus flavus: Purification, Steady-State Kinetic Characterization, and Detailed Analysis of the Substrate Binding Pocket Using Structure–Activity Relationships
		of xylose reductase for reaction with pyridine carbaldehydes,
	jb.oxfordjournals.org /cgi/content/abstract/133/4/553 (302 words)

	Important Drug-Devise Safety Alert - Maltose, Galactose, Oral Xylose
		The GDH-PQQ method of glucose determination is non-specific for glucose and, in the presence of maltose, xylose, or galactose, may yield falsely elevated glucose readings.
		Although this is a known drug-device interaction (1-5), there have been reports of the inappropriate administration of insulin and consequent life-threatening/ fatal hypoglycemia in response to erroneous test results obtained from patients receiving parenteral products containing maltose.
		Review the labeling for both the glucose meter and the test strips to be used to monitor glucose levels to determine what type of method is used for glucose determination.
	www.fda.gov /cber/safety/maltose110405.htm (546 words)

	UMHS - D-Xylose Tolerance Test
		In preparation for the test, your child should not eat any solid food after midnight and should not drink any liquids for 4 hours before the test.
		To start the test, your child will drink a small amount of sugar named xylose (ZIE-lohs) dissolved in water.
		After waiting one hour, your child will have blood drawn at one of the blood drawing stations located in the Taubman (tahbmun) Center.
	www.med.umich.edu /1libr/tests/testd01.htm (187 words)

	ARS : Partnering
		This invention discloses a xylose fermenting yeast strain that exhibits a reduced expression of cytochrome C, resulting in enhanced fermentation of xylose relative to strains in which cytochrome C is fully functional.
		By culturing this xylose-fermenting mutant strain in the presence of xylose-containing material, a method of producing ethanol from xylose is established.
		The use of ethanol as a fuel source has increased dramatically in recent years and future needs are projected to exceed the production capability of currently utilized technology.
	www.ars.usda.gov /research/patents/patents.htm?serialnum=09274642 (132 words)

	BD - Diagnostic Systems: OF Medium with Xylose
		OF (Oxidation Fermentation) media are used for the determination of oxidative and fermentative metabolism of carbohydrates by gram-negative rods on the basis of acid reaction in either the open or closed system.
		OF Medium with Lactose, Maltose, Mannitol, Sucrose or Xylose contains the above ingredients with, per liter, 10.0 g of the specified carbohydrate.
		Tubes with tight caps should be opened carefully to avoid injury due to breakage of glass.
	www.bd.com /ds/productCenter/221338.asp (696 words)

	Xylose Tolerance Test (Fasting + 2-Hour Blood + 5-Hour Urine – Adult)
		Xylose Tolerance Test (Fasting + 2-Hour Blood + 5-Hour Urine – Adult)
		Fasting plasma xylose, 2-hour (adult) postdose plasma xylose, plus 5-hour urine xylose
		Record 5-hour urine total volume on the test request form.
	www.labcorp.com /datasets/labcorp/html/chapter/mono/sc032800.htm (522 words)

	Transport of D-Xylose in Lactobacillus pentosus, Lactobacillus casei, and Lactobacillus plantarum: Evidence for a ... (Site not responding. Last check: 2007-11-06)
		A Bacillus subtilis 168 mutant with increased xylose uptake can utilize xylose as sole carbon source.
		Regulation of expression, genetic organization and substrate specificity of xylose uptake in Bacillus megaterium.
		Strobel, H. Evidence for catabolite inhibition in regulation of pentose utilization and transport in the ruminal bacterium Selenomonas ruminantium.
	jb.asm.org /cgi/content/full/181/16/4768 (2596 words)

	Procedure Xylose 5 Hour Urine
		also known as D Xylose 5 hour Tolerance Urine
		The collection of urine should be done in conjunction with the specified collection of blood specimens (see also d xylose blood).
		Collect urine in container for 5 hours after 25-gram dose of d xylose.
	health.ucsd.edu /labref/P332.html (97 words)

	xylose - Dictionnaire Français-Anglais WordReference.com
		We found no English translation for 'xylose' in our French to English Dictionary.
		Or did you want to translate 'xylose' from English to French?
		Forum discussions with the word(s) 'xylose' in the title:
	www.wordreference.com /fren/xylose (41 words)

	Profood - Food Ingredient supplier and distributor
		1) THE PREPARATION OF XYLOSE FROM CORN COBS.
		4) Nonenzymatic Browning in Food Models in the Vicinity of the Glass Transition: Effects of Fructose, Glucose, and Xylose as Reducing Sugar, Lievonen, S. M.; Laaksonen, T. J.; Roos, Y. Agric.
		9) Isolation and characterization of the most antimutagenic Maillard reaction products derived from xylose and lysine, Gow Chin Yen, Chi Fai Chau, Jen Dan Lii; J. Agric.
	www.profoodinternational.com /xylose-profood.html (189 words)

	Procedure D Xylose Blood
		also known as D Xylose Tolerance Blood, Xylose Absorption Test
		This test is to be done in conjunction with the 5-hour urine collection for d xylose (see D xylose 5 hr urine).
		Blood specimens for this are drawn at fasting and 2 hours after ingestion of 25 grams of D xylose.
	health.ucsd.edu /labref/P375.html (97 words)

	BD - Diagnostic Systems: Phenol Red Broth with Xylose and Durham Tube
		BD - Diagnostic Systems: Phenol Red Broth with Xylose and Durham Tube
		You are here: BD › Diagnostic Systems › Product Center › Prepared Media › BD BBL™ Prepared Tubed and Mycoflask Media › Mycoflask™, Pour Tubes, and Ampuled Media › Phenol Red Broth with Xylose and Durham Tube
		Phenol Red Broth Base and Phenol Red Broth with carbohydrates are used for the determination of fermentation reactions in the differentiation of microorganisms.
	www.bd.com /ds/productCenter/221705.asp (549 words)

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