Results 131 to 140 of about 3,728 (176)

Studies of alcaptonuria: Kinetics of homogentisic acid autoxidation

Archives of Biochemistry and Biophysics, 1960
Abstract Rates of oxygen uptake of homogentisic acid preparations have been studied manometrically. Commercially available tyrosinase preparations were found to be enzymically active but to have a negligible, if any, effect on homogentisic acid in 0.1 M phosphate buffers, pH 6.85.
R A, MILCH, H K, SCHIRMER
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The bound form of homogentisic acid in alkaptonuric urine

Clinica Chimica Acta, 1962
Abstract 1. (1) In two cases of alkaptonuria chromatography of the patients' urine showed two spots differing in R F , but giving positive reactions characteristic for homogentisic acid. One of these substances, which is soluble in ether, is identical with homogentisic acid. 2.
B, SKARZYNSKI, M, SARNECKA-KELLER, J, FRENDO   +2 more
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The preparation and identification of various adducts of oxidized homogentisic acid and the development of a new sensitive colorimetric assay for homogentisic acid

Clinica Chimica Acta, 1971
Abstract Homogentisic acid was converted to 1,4-benzoquinone-2-acetic acid (BQA). BQA was shown to undergo adduct formation with a number of different compounds containing free amino or sulfhydryl groups, including diethylenetriamine (DET) and D-penicillamine.
T J, Lustberg, J D, Schulman, J E, Seegmiller   +2 more
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Microbial conversion of p-hydroxyphenylacetic acid to homogentisic acid

Canadian Journal of Microbiology, 1972
An unidentified bacterium degrades p-hydroxyphenylacetic acid by a pathway which involves homogentisic acid as an intermediate. Extracts of cells grown on p-hydroxyphenylacetic acid contain an enzyme that converts p-hydroxyphenylacetic acid to homogentisic acid.
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Detection of Homogentisic Acid in Plasma and Urine

2015
Laboratory proof of alkaptonuria in urine is based on the reducing properties of homogentisic acid. Even routine chemical examination of urine can lead to diagnosis of alkaptonuria on the basis of characteristic colouration with Fehling’s solution. In patients with alkaptonuria who excrete 2–3 g of homogentisic acid/day, urine with Fehling’s solution ...
Mária Stančíková, Jozef Rovenský
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Homogentisic Acid Derivatives from Miliusa balansae

Journal of Natural Products, 2003
The new homogentisic acid derivatives miliusol (1b) and miliusolide (2) from Miliusa balansae were isolated and structurally determined by spectroscopic means. The relative configurations of the new 1b and its known acetate 1a were established. Furthermore, the symmetric ether bis(2-hydroxyphenyl)methyl ether 3, which was isolated for the first time ...
Do Thu, Huong, Christine, Kamperdick, Tran Van, Sung   +2 more
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Homogentisic Acid

Acta Crystallographica Section C Crystal Structure Communications, 1995
N. Okabe, Y. Kohyama
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Kinetics of homogentisic acid autoxidation

Archives of Biochemistry and Biophysics, 1958
R A, MILCH, I C, MAGNUS
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Gas chromatography of urinary homogentisic acid

Analytical Biochemistry, 1966
R E, Bondurant, M, Greer, C M, Williams
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Formation of Gentisic Acid from Homogentisic Acid. VI

The Journal of Biochemistry, 1964
M, KANDA, H, WATANABE, S, UCHIYAMA, Y, NAKATA, Y, SAKAMOTO   +4 more
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