Results 11 to 20 of about 95,783 (301)

Stability of ascorbate in urine: relevance to analyses for ascorbate and oxalate.

open access: yesClinical Chemistry, 1985
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]

open access: yes, 2016
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]

open access: yes, 2010
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

open access: yesAgronomy, 2023
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

Supplemental Ascorbate Diminishes DNA Damage Yet Depletes Glutathione and Increases Acute Liver Failure in a Mouse Model of Hepatic Antioxidant System Disruption

open access: yesAntioxidants, 2021
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.)

open access: yesSoil Systems, 2021
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

open access: yesPharmaceuticals, 2020
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]

open access: yesCiência e Técnica Vitivinícola, 2018
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

Peel to Flesh Bioactive Compounds Ratio Affect Apple Antioxidant Potential and Cultivar Functional Properties

open access: yesAgriculture, 2023
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

Morphological and Physiological Responses of In Vitro-Grown Cucurbita sp. Landraces Seedlings under Osmotic Stress by Mannitol and PEG

open access: yesHorticulturae, 2022
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

Home - About - Disclaimer - Privacy