Results 11 to 20 of about 95,783 (301)
Stability of ascorbate in urine: relevance to analyses for ascorbate and oxalate.
Abstract Ascorbate is unstable in urine at room temperature at pH values ranging from 1 to 12. At pH 7 and above, oxalate is generated in amounts directly proportional to the ascorbate concentration. In 12 different urines, adjusted to pH 12 and incubated for 20 h at room temperature, there was a significant correlation between the ...
Chalmers, AH, Cowley, DM, McWhinney, BC
openaire +6 more sources
Ascorbate-Deficient vtc2 Mutants in Arabidopsis Do Not Exhibit Decreased Growth [PDF]
In higher plants the L-galactose pathway represents the major route for ascorbate biosynthesis. The first committed step of this pathway is catalyzed by the enzyme GDP-L-galactose phosphorylase and is encoded by two paralogs in Arabidopsis – VITAMIN C2 ...
B Lim (13411716) +3 more
core +6 more sources
Ascorbate enhances iron uptake into intestinal cells through formation of a FeCl3-ascorbate complex [PDF]
It has been well documented that ascorbate enhances iron uptake, with a proposed mechanism based on reduction to the more absorbable ferrous form. We have performed a study on the effects of ascorbate on ferric iron uptake in the human epithelial Caco-
Lodge, John K. +11 more
core +3 more sources
Antioxidant Response in the Salt-Acclimated Red Beet (Beta vulgaris) Callus
Callus cultures initiated from red beet tubers were acclimated to 75 or 100 mM NaCl salinity by exposing them to gradually increasing NaCl concentrations.
Jarosław Tyburski, Natalia Mucha
doaj +1 more source
Cellular oxidants are primarily managed by the thioredoxin reductase-1 (TrxR1)- and glutathione reductase (Gsr)-driven antioxidant systems. In mice having hepatocyte-specific co-disruption of TrxR1 and Gsr (TrxR1/Gsr-null livers), methionine catabolism ...
Colin G. Miller +10 more
doaj +1 more source
Soil Sulfur Sources Differentially Enhance Cadmium Tolerance in Indian Mustard (Brassica juncea L.)
The effect of four soil-applied sulfur (100 mg S kg−1 soil (100S) and 200 mg S kg−1 soil (200S)) in different sources (elemental S, ammonium sulfate, gypsum or magnesium sulfate) in protecting mustard (Brassica juncea L.
Iqbal R. Mir +8 more
doaj +1 more source
Excess Ascorbate is a Chemical Stress Agent against Proteins and Cells
Excess ascorbate (as expected in intravenous treatment proposed for COVID-19 management, for example) oxidizes and/or degrades hemoglobin and albumin, as evidenced by UV-vis spectroscopy, gel electrophoresis, and mass spectrometry.
Maria Lehene +7 more
doaj +1 more source
Physiological and agronomical responses to environmental fluctuations of two Portuguese grapevine varieties during three field seasons [PDF]
Extensive agricultural losses are attributed to heat, often combined with drought. These abiotic stresses occur in the field simultaneously, namely in areas with Mediterranean climate, where grapevine traditionally grows.
Carvalho Luísa C. +4 more
doaj +1 more source
More than ten thousand apple cultivars with high variability in the quality traits and year-round availability place apples at the forefront of consumed fruits.
Monika Sawicka +2 more
doaj +1 more source
Screening and identification of tolerant genotypes using osmotic materials under in vitro culture could be rapid, easy, and even accurate. In this research, three Iranian landraces of Cucurbita sp.
Rana Panahi Tajaragh +7 more
doaj +1 more source

