Results 151 to 160 of about 2,687,981 (207)

Tissue-specific profiles of phenolic metabolites in rice deprived of <i>OsCOP1</i>, <i>OsDET1</i>, and <i>OsCGT</i>. [PDF]

Front Plant Sci
Choi HJ, Kim B, Thiruvengadam M, Chi HY, Jung BS, Kim JW, Lee SB, Lee JM, Park Y, Jeon D, Kim SH.   +10 more
europepmc   +1 more source

Early-Onset Degenerative Bone Changes as a Manifestation of Alkaptonuria: A Case Report. [PDF]

Cureus
Braga R, Teixeira F, Matos C.
europepmc   +1 more source

Combined alkaptonuria and osteoporosis contributing to chronic back pain. [PDF]

Endocrinol Diabetes Metab Case Rep
Riegler A, Anand G.
europepmc   +1 more source

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Quantitation of Homogentisic Acid in Normal Human Plasma

Journal of Chromatography B, Biomedical Sciences and Applications, 1996
A new stable isotope dilution gas chromatograph-mass spectrometric method of analysis of homogentisic acid is described. Using this method, homogentisic acid is measured for the first time in normal human plasma. The assay of sera from nine normal individuals yielded a range of values from 2.4 to 12 ng/ml.
John C Deutsch, J C Deutsch
exaly   +3 more sources

The Production of Homogentisic Acid Out of Phenylacetic Acid byAspergillus Niger

Antonie Van Leeuwenhoek, 1951
With the aid of the replacement culture technique it was found that a strain ofAspergillus niger was able to produce homogentisic acid out of phenylacetic acid with a yield upto 15.7 % of the theoretical amount.
A J, KLUYVER, J C, VAN ZIJP
exaly   +3 more sources

A Synthesis of Homogentisic Acid

Transactions of the Kansas Academy of Science (1903-), 1973
Homogentisic acid (2,5-dihydroxyphenylacetic acid) is the substance found in the urine in alcaptonuria, an inborn error of metabolism involving incomplete oxidation of phenylalanine and tyrosine (1). The urine of individuals afBicted with the disease turns dark owning to oxidation of the acid to substituted quinhydrone complexes.
openaire   +2 more sources

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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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
openaire   +2 more sources