Results 181 to 190 of about 15,976 (233)
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Determination of deoxycholic and cholic acids in bile
Archives of Biochemistry and Biophysics, 1954Abstract A method is described for the simultaneous quantitative determination of cholic acid and deoxycholic acid by ultraviolet absorption spectrophotometry. The method is similar to the published procedure of Kier (2) with the exception that the bile acid samples to be analyzed are heated in 65% sulfuric acid at 60 °C.
E H Mosbach, Forrest E Kendall
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Journal of Chromatography A, 2008 This paper presents a derivatization, mass fragmentation study relating to the most common six cholic acids, such as cholic, lithocholic, chenodeoxycholic, Ursodeoxycholic, 3-hydroxy,7-ketocholanic and dehydrocholic acids, identified and quantified as ...
A Vasanits-Zsigrai +2 more
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Stability of Vegetal Diamine Oxidase in Simulated Intestinal Media: Protective Role of Cholic Acids
Journal of Agricultural and Food Chemistry, 2018 Food biogenic amines, in particular, histamine, are often responsible for various enteric and vascular dysfunctions. Several years ago, the oral administration of copper-containing diamine oxidase (DAO), also called histaminase, able to oxidatively ...
Paola Pietrangeli +2 more
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Journal of Chromatography A, 2011 An exhaustive GC-MS acquisition study was performed, for the simultaneous analysis of natural and synthetic steroids and cholic acids (in order to insert them into the last tierce of our multiresidue analysis system), such as androsterone, beta-estradiol,
A Vasanits-Zsigrai +2 more
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Bacterial oxidation of cholic acid
Archives of Biochemistry and Biophysics, 1954Abstract 1. 1. Ammonium cholate (0.1%) on perfusion through soil yields a substance in the soil perfusate with λ max at 246 mμ in water. This substance is referred to as X246. 2. 2. The organisms responsible for the conversion of cholic acid to X246 have been isolated and are provisionally identified as Nocardia . 3. 3.
A H, HALPERIN +2 more
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Microbiological Degradation of Cholic Acid
Nature, 1957FOR the microbiological oxidation of cholic acid, two possible pathways different from that found in A. faecalis1 or E. coli2 can be suggested.
S, HAYAKAWA +3 more
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Synthesis of the specific monosulfates of cholic acid
Steroids, 1975The three isomeric cholic acid-monosulfates were synthetized and characterized. Cholic acid-3-sulfate was obtained by reacting cholic acid for 2 min with chlorosulfonic acid in pyridine and chromatography of the resulting bile salt mixture on Sephadex LH-20.
G, Parmentier, H, Eyssen
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Inhibition of cholesterol biosynthesis by cholic acid
American Journal of Physiology-Legacy Content, 1959The effects of dietary cholic acid on free, total and ester cholesterol levels in liver and serum, and on the relative rates of incorporation of acetate-1-C14 and mevalonic acid-2-C14 were investigated in the rat. Cholic acid caused equally significant increases in free and ester liver cholesterol.
W T, BEHER, G D, BAKER
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Radioimmunoassay of serum conjugated cholic acid
Clinica Chimica Acta, 1976A radioimmunoassay for serum conjugated cholic acid is described using antiserum obtained five weeks after immunization of rabbits with cholic acid bovine serum albumin conjugate. Prior to the radioimmunoassay, extraction of bile acids was performed with Amberlite XAD-2. The displacement curve of glyco[3H]cholic acid was linear on a logit-log plot from
S, Matern, R, Krieger, W, Gerok
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Synthesis of biological precursors of cholic acid
Steroids, 1978This paper describes a new and convenient procedure for the synthesis of 5beta-cholestane-3alpha,7alpha,12alpha,24-tetrol (24R and 24 S) and 5beta-cholestane-3alpha,7alpha,12alpha,26-tetrol starting from 5beta-cholestane-3alpha,7alpha,12alpha,25-tetrol.
B, Dayal +4 more
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