Results 131 to 140 of about 817,589 (162)
Some of the next articles are maybe not open access.
A simple method for the detection and quantitative determination of hexuronic acids and pentoses
Analytical Biochemistry, 1974Abstract The present report describes a new and simple method for the detection and quantitative determination of pentoses and hexuronic acids either separately or in a mixture. The method involves treatment of the sample with sulfuric acid followed by the addition of harmine and then cysteine. Hexuronic acids produce a pink color with harmine, while
W S Allen +2 more
exaly +3 more sources
Analytical Biochemistry, 1967
Abstract Two modifications of the carbazole reaction of hexuronic acids are described which differ from the original reaction by the concentration of acid, the temperature, and the duration of heating. The different hexosaminohexuronides show very different extinction coefficients in these two reactions which can be used for the differentiation of ...
Zacharias Dische, Z Dische
exaly +3 more sources
Abstract Two modifications of the carbazole reaction of hexuronic acids are described which differ from the original reaction by the concentration of acid, the temperature, and the duration of heating. The different hexosaminohexuronides show very different extinction coefficients in these two reactions which can be used for the differentiation of ...
Zacharias Dische, Z Dische
exaly +3 more sources
Color Reaction of Hexuronic Acids with Anthrone
Analytical Chemistry, 1956J. R. Helbert, K. D. Brown
exaly +2 more sources
289. The synthesis of conjugated hexuronic acids
Journal of the Chemical Society, 1952C A Marsh
exaly +2 more sources
Separation of hexuronic acids by an ion-exchange process
Biochimica Et Biophysica Acta, 1962exaly +3 more sources
Colorimetric determination of hexuronic acids in plant materials
Analytical Chemistry, 1979exaly +2 more sources
Nature, 1932
IN connexion with experiments under the direction of Dr. L. J. Harris1 on the ro1e of the suprarenal gland in vitamin C metabolism, we have investigated the silver nitrate staining capacity of glands taken from normal and scorbutic animals. It will be recalled that long before the identity of vitamin C with hexuronic acid was postulated2,3, Szent ...
T. MOORE, S. N. RAY
openaire +1 more source
IN connexion with experiments under the direction of Dr. L. J. Harris1 on the ro1e of the suprarenal gland in vitamin C metabolism, we have investigated the silver nitrate staining capacity of glands taken from normal and scorbutic animals. It will be recalled that long before the identity of vitamin C with hexuronic acid was postulated2,3, Szent ...
T. MOORE, S. N. RAY
openaire +1 more source
Hexuronic Acid Dehydrogenase of Agrobacterium tumefaciens
Journal of Bacteriology, 1969Growth of Agrobacterium tumefaciens on d -glucuronic acid (GlcUA) or d -galacturonic acid (GalUA) induces formation of hexuronic acid dehydrogenase [ d -aldohexuronic acid: nicotinamide adenine dinucleotide (NAD) oxidoreductase].
Y F, Chang, D S, Feingold
openaire +2 more sources
The Methyl Ethers of Hexuronic Acids
1954Publisher Summary This chapter provides an overview of the methyl ethers of hexuronic acids. Hexuronic acid residues occur in a large number of different polysaccharides. The chapter focuses on the methyl ethers of the naturally occurring D-glucuronic, D-galacturonic, and D-mannuronic acids, and their derivatives.
openaire +2 more sources
Crystalline Structure of Hexuronic Acid
Nature, 1932FROM a purified specimen of ‘hexuronic acid’ (identified by Szent-Gyorgyi with vitamin C) available in this laboratory I have been able to obtain sufficiently good crystals to carry out an X-ray examination by the single-crystal rotation method. The substance is monoclinic sphenoidal, with a = 17.71, b = 6.32, c = 6.38 A., and I² = 102½°, while the ...
openaire +1 more source