Results 251 to 260 of about 257,841 (286)

Photocatalytic, site-selective oxidations of carbohydrates

Chemical Communications, 2021
Pyranosides undergo site-selective, aerobic oxidations using a photocatalyst, hydrogen atom transfer mediator and bond-weakening co-catalyst.
Daniel J. Gorelik, Victoria Dimakos, Timur Adrianov, Mark S. Taylor   +3 more
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Exogenous carbohydrate oxidation from different carbohydrate sources during exercise

Journal of Applied Physiology, 1993
The exogenous carbohydrate (CHO) oxidation of naturally enriched [13C]CHO sources with different solubilities was studied during cycling exercise (150 min, 60% maximum work output). Moreover, the effect of adding a 13C tracer with different physical properties than the tracee on exogenous CHO oxidation was investigated. Test solutions (28.5 ml/kg body
W H, Saris, B H, Goodpaster, A E, Jeukendrup, F, Brouns, D, Halliday, A J, Wagenmakers   +5 more
openaire   +2 more sources

Increased Carbohydrate Oxidation after Ingesting Carbohydrate with Added Protein

Medicine & Science in Sports & Exercise, 2008
To examine the metabolic impact of including protein in a postexercise carbohydrate supplement when ingested between two bouts of prolonged running performed within the same day.Six healthy men participated in two trials separated by 14 d, each involving a 90-min treadmill run at 70% VO2max followed by 4 h of recovery and a subsequent 60-min run at the
James A, Betts, Clyde, Williams, Les, Boobis, Kostas, Tsintzas   +3 more
openaire   +2 more sources

Periodate oxidation of carbohydrates

Journal of Chromatography A, 1979
Abstract An isotachophoresis method was devised, which allows rapid, simultaneous determination of 5–100 nmole samples of iodate, periodate, and fomate ions with coefficients of variation less than 3.5%, and teh usefulness of this method for the study of periodate oxidation of carbohydrates was demonstrated.
Susumu Honda, Hisakio Wakasa, Motome Terao, Kazuaki Kakehi   +3 more
openaire   +1 more source

Carbohydrates electrocatalytic oxidation using CNT–NiCo-oxide modified electrodes

Talanta, 2011
A new sensor for an amplified electrochemical detection of carbohydrates is proposed, where carbohydrates are oxidized by CNT-NiCo-oxide composite in basic solutions. Cyclic voltammograms of the modified electrode show a stable and well defined redox couple in alkaline media due to the synergy of Ni(II)/Ni(III) system with Co(II)/Co(III).
Virtanen Vesa, Sesay Adama Marie, Arvinte Adina   +2 more
openaire   +2 more sources

Carbohydrate oxidation disorders of skeletal muscle

Current Opinion in Clinical Nutrition and Metabolic Care, 2002
The major energy sources for muscle contraction are glycogen, glucose and fatty acids, and defects in their oxidative pathways cause metabolic myopathies. Eleven specific enzyme deficiencies of carbohydrate oxidation affect skeletal muscle alone or in combination with other tissues, such as liver, heart or red blood cells.
Vorgerd, M., Zange, J.
openaire   +3 more sources

Hyperglycemia stimulates carbohydrate oxidation in humans

American Journal of Physiology-Endocrinology and Metabolism, 1987
We examined whether hyperglycemia stimulates carbohydrate oxidation independent of insulin. Rates of total glucose disposal and substrate oxidation (indirect calorimetry) were measured at 4 insulin concentrations and at each level of insulin at 4 glucose concentrations in 88 separate studies in 22 normal volunteers.
H, Yki-Järvinen, C, Bogardus, B V, Howard   +2 more
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Carbohydrate Effect: Hormone and Oxidative Changes

International Journal of Sports Medicine, 2007
Carbohydrate administration during exercise diminishes stress hormone release, but the relationship of these hormones with oxidative stress has not been examined. Fifteen subjects functioned as their own controls and ingested carbohydrate (6 %) or placebo in a randomized design while cycling for 2.5-h ( approximately 75 % V.O (2peak)).
S, McAnulty, L, McAnulty, D, Nieman, J, Morrow, C, Dumke, A, Utter   +5 more
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Periodate Oxidation of Carbohydrates

1956
Publisher Summary The oxidation with periodate ion, resulting in 1,2-glycol scission, is one of the most widely used reactions in carbohydrate chemistry. The mild conditions of the reaction are especially well adapted for application to the sensitive carbohydrate structures. The development and wide application of the reaction have been occasioned by
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Automated hypoiodite oxidation of carbohydrates

Carbohydrate Research, 1974
Abstract An automated system is described for the hypoiodite oxidation of aldoses and substituted aldoses to the corresponding aldonic acids. Automated determination of the glyoxylic acid and formaldehyde obtained on oxidation with periodate enables the 3- O -, 4- O -, and 6- O -substituted aldonic acids to be distinguished.
Adaline M.Y. Ko, Peter J. Somers
openaire   +1 more source