Book ChapterDOI
Selected methods for the determination of ascorbic acid in animal cells, tissues, and fluids
Reads0
Chats0
TLDR
This chapter discusses selected methods for the determination of ascorbic acid in animal cells, tissues, and fluids and suggests that prompt stabilization is especially important in the case of plasma or serum.Abstract:
Publisher Summary This chapter discusses selected methods for the determination of ascorbic acid in animal cells, tissues, and fluids. Methods for determining ascorbic acid are numerous. In general, chemical analyses for the vitamin are divided into two groups; the determination of the reduced form and the determination of the oxidized form. The former group of analyses is usually based upon the oxidation–reduction properties of ascorbic acid. These are widely used as the fundamental reactions in the measurement of vitamin C. The latter group of analyses is usually based upon the oxidation of the ascorbic acid and the subsequent formation of a hydrazone or a fluorophore. Best results are obtained if samples, especially plasma, are quickly stabilized with either trichloroacetic acid or metaphosphoric acid and immediately analyzed. Prompt stabilization is especially important in the case of plasma or serum. The greater stability of ascorbic acid in acid solution is because of the decreased tendency for the hydrolysis of the lactone ring with decreasing pH.read more
Citations
More filters
Journal ArticleDOI
Chemopreventive efficacy and anti-lipid peroxidative potential of Jasminum grandiflorum Linn. on 7,12-dimethylbenz(a)anthracene-induced rat mammary carcinogenesis.
TL;DR: Oral administration of ethanolic extract of J. grandiflorum flowers (JgEt) at a dose of 300 mg/kg body weight for 14 weeks to DMBA‐injected animals completely prevented the formation of tumors in the pre‐initiation period and exerted significant anti‐lipid peroxidative effect.
Journal ArticleDOI
Buthionine sulfoximine-induced glutathione depletion: Its effect on antioxidants, lipid peroxidation and calcium homeostasis in the lung
TL;DR: In this paper, buthionine sulfoximine (BSO), an irreversible inhibitor of gamma-glutamylcysteine synthetase, produces glutathione (GSH) depletion in tumors, making them sensitive to drugs and radiation.
Journal ArticleDOI
Ferulic acid modulates fluoride-induced oxidative hepatotoxicity in male Wistar rats.
TL;DR: It is suggested that ferulic acid has the ability to protect fluoride-induced hepatic damage, as observed from reduced levels of lipid hydroperoxides, nitric oxide, restored levels of enzymic and non-enzymic antioxidants, and total protein content, with a concomitant decline in the levels of marker enzymes and lipid profile in fluoride- induced rats.
Journal ArticleDOI
Redox status of the liver and kidney of 2,2-dichlorovinyl dimethyl phosphate (DDVP) treated rats.
TL;DR: The available data from this study revealed that DDVP brings about its toxicity through depletion of the antioxidant systems and thus exposing the cells and cellular macromolecules to oxidative attacks by reactive oxygen species generated either from its metabolites or other in vivo means.
Journal ArticleDOI
Attenuation of diabetic complications by C-phycoerythrin in rats: antioxidant activity of C-phycoerythrin including copper-induced lipoprotein and serum oxidation.
TL;DR: Results indicated the involvement of C-PE in the amelioration of diabetic complications by significant reductions in oxidative stress and oxidised LDL-triggered atherogenesis.
References
More filters
Journal ArticleDOI
The determination of ascorbic acid in whole blood and urine through the 2,4-dinitrophenylhydrazine derivative of dehydroascorbic acid
Joseph H. Roe,Carl A. Kuether +1 more
Journal ArticleDOI
Distribution of ascorbic acid, metabolites and analogues in man and animals.
TL;DR: The availability of labeled AA, metabolites, and analogues has made it possible to follow up the appearance of these compounds or mctabolites thereof in various tissues of animals by means of dissecting the animals with subsequent determination of the radioactive material accumulated by the tissues or by Means of whole-body autoradiography.
Journal ArticleDOI
A rapid micromethod for the determination of ascorbic acid in plasma and tissues.
TL;DR: A rapid simple micromethod for the determination of l -ascorbic acid in plasma and other biological tissues using orthophosphoric acid and ferric iron is presented and can be used to accurately determine 0.1 μg of the vitamin in samples of plasma andOther biological tissues.