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Molecular analysis of ascorbate synthesis in plants
, 2002 While ascorbic acid is a well-known molecule because of its dietary significance, most aspects of its metabolism and some aspects of its function in plants are poorly understood.
Hong, Keejong
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, 2012 Tomato is an important crop worldwide and one of the major sources of vitamin C (ascorbate) in the human diet. Ascorbate contributes both to tomato nutritional quality and has roles in stress tolerance and adaptation to the environment.
GAUTIER, Hélène +9 more
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The functions of ascorbate and ascorbate transport systems in plant membranes
, 1999 Foyer, Ch. +5 more
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Ascorbic Acid and Ascorbic Acid Oxidase in Vegetables
Ascorbic Acid and Ascorbic Acid Oxidase in VegetablesAscorbic acid, dehydroascorbic acid and total ascorbic acid content in fruits and vegetables and the amounts of remaining after 24 hours were measured and compared by high-performance liquid chromatography. Activity of ascorbic acid oxidase was determined in nine kinds of vegetables.
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Anaerobic reaction of ascorbate oxidase with ascorbate
Archives of Biochemistry and Biophysics, 1978Abstract Ascorbate oxidase is fully reduced by 4 mol of ascorbate in the absence of air, as monitored by optical and electron paramagnetic resonance spectra. At less than stoichiometric ascorbate concentration there is a slow equilibration between the 605-and 330-nm absorption bands: The 605-nm chromophore is first reduced, then its color reappears ...
L, Avigliano +4 more
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Crystal structure of the ascorbate peroxidase–ascorbate complex
Nature Structural & Molecular Biology, 2003Heme peroxidases catalyze the H2O2-dependent oxidation of a variety of substrates, most of which are organic. Mechanistically, these enzymes are well characterized: they share a common catalytic cycle that involves formation of a two-electron, oxidized Compound I intermediate followed by two single-electron reduction steps by substrate.
Sharp, K.H. +3 more
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Ascorbate Sulfate: A Urinary Metabolite of Ascorbic Acid in Man
Science, 1971Ascorbate-3-sulfate is a significant metabolite of ascorbic acid excreted in human urine. The characteristics of this compound were determined in experiments in which labeling with carbon-14 and tritium was used coupled with cochromatography with synthetic ascorbate-3-sulfate (both labeled and not labeled with sulfur-35) in a variety of solvent and ...
E M, Baker +4 more
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Journal of Dental Research, 1986
This study sought to determine whether the lingual ascorbic acid test (LAAT) and measurement of salivary ascorbate refXect plasma and leukocyte ascorbate levels during controlled periods of ascorbic acid depletion and supplementation. Eleven healthy non-smoking men, aged 19-28 years, ate a diet that was repeated every seven days and ...
P J, Leggott +4 more
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This study sought to determine whether the lingual ascorbic acid test (LAAT) and measurement of salivary ascorbate refXect plasma and leukocyte ascorbate levels during controlled periods of ascorbic acid depletion and supplementation. Eleven healthy non-smoking men, aged 19-28 years, ate a diet that was repeated every seven days and ...
P J, Leggott +4 more
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Ascorbic Acid and Hypertriglyceridemia
Annals of Internal Medicine, 1980Excerpt To the editor: Although increased blood lipid levels have been associated with lowered intracellular and extracellular ascorbic acid levels (1, 2), few or no data exist on treatment of hype...
K L, Geoly, L H, Diamond
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