Journal ArticleDOI
A rapid micromethod for the determination of ascorbic acid in plasma and tissues.
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TLDR
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.About:
This article is published in Biochemical Medicine.The article was published on 1974-09-01. It has received 363 citations till now. The article focuses on the topics: Ascorbic acid & L-gulonolactone oxidase.read more
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Book ChapterDOI
Selected methods for the determination of ascorbic acid in animal cells, tissues, and fluids
TL;DR: 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.
Journal ArticleDOI
An improved method for determination of l-ascorbic acid and l-dehydroascorbic acid in blood plasma
TL;DR: An improved method was improved for the separate determination of L-ascorbic acid and L-dehydroascorbIC acid in blood plasma, using dithiothreitol, to determine the content of ascorbic acid.
Journal ArticleDOI
Vitamin status in morbidly obese patients: a cross-sectional study
TL;DR: Low concentrations of vitamin B-6, vitamin C, 25-hydroxyvitamin D, and vitamin E adjusted for lipids are prevalent in morbidly obese Norwegian patients seeking weight-loss treatment.
Journal ArticleDOI
Oxidative modification of glutamine synthetase. II. Characterization of the ascorbate model system.
TL;DR: A model system, consisting of oxygen, a metal ion, and ascorbic acid, mimics the bacterial system in mediating the oxidative modification of glutamine synthetase to gain an understanding of the mechanism of oxidation and of factors which control the susceptibility of the enzyme to oxidation.
Journal ArticleDOI
Vitamin status after bariatric surgery: a randomized study of gastric bypass and duodenal switch
Erlend T. Aasheim,Sofia Björkman,Torgeir T. Søvik,My Engström,Susanna E Hanvold,Tom Mala,Torsten Olbers,Thomas Bøhmer +7 more
TL;DR: Compared with gastric bypass, duodenal switch may be associated with a greater risk of vitamin A and D deficiencies in the first year after surgery and of thiamine deficiency in the initial months after surgery.
References
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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
The assay of adrenocorticotrophic hormone by the adrenal ascorbic acid-depletion method.
TL;DR: The present paper is a detailed description and evaluation of the method based upon the results of a number of comparative assays carried out over the past two years, finding that the adrenocorticotrophic activity of materials other than highly purified preparations of A.C.T.H. cannot be assayed in the animal whose hypophysis has been removed.
Journal ArticleDOI
The determination of ascorbic acid in plasma; a macromethod and micromethod.
Journal ArticleDOI
A rapid procedure for the determination of adrenal ascorbic acid. Application of the Sullivan and Clarke method to tissues.
TL;DR: A simple and rapid method for the determination of ascorbic acid in adrenal glands and other tissues is described, coupling the Fe ++ produced with α,α′-dipyridyl with the redorange complex.
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