Results 191 to 200 of about 31,220 (236)
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The Photochemistry of Ergosterol
Nature, 1928IN order to study the changes undergone by ergosterol under the influence of ultra-violet irradiation, the following arrangement has been devised: The flat platinum surface of a sensitive platinum-tellurium thermopile (constructed by Dr. W. Vanselow in this laboratory) was coated with a layer of solid ergosterol cemented with ether and was then exposed
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Biosynthetic routes to ergosterol in yeast
Biochemical and Biophysical Research Communications, 1972Abstract The routes from episterol ( 10 ) to ergosterol ( 2 ) in aerobically grown Saccharomyces cerevisiae have been evaluated by systematically feeding and trapping with suspected intermediates ( 12 - 16 ) which were independently synthesized.
M, Fryberg +2 more
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Chemistry of the Tricarbonyliron Complexes of Calciferol and Ergosterol
Journal of the Chemical Society, Perkin Transactions 1, 1976Calciferol affords α- and β-tricarbonyliron complexes in the ratio ca. 2 : 1. Oxidation of the α-complex gives the relatively stable calciferone derivative. For comparison the tricarbonyliron complex of ergosterol was likewise oxidised to the 3-ketone.
D H, Barton, H, Patin
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Mycopathologia, 1997
Ergosterol peroxide, a presumed product of the H2O2-dependent enzymatic oxidation of ergosterol, has been isolated from yeast forms of the pathogenic fungus Sporothrix schenckii. The substance, which may have a role in fungal virulence, has been characterized mainly using spectroscopic methods (1H and 13C nuclear magnetic resonance and high resolution ...
Da Graça Sgarbi, Diana Bridon +5 more
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Ergosterol peroxide, a presumed product of the H2O2-dependent enzymatic oxidation of ergosterol, has been isolated from yeast forms of the pathogenic fungus Sporothrix schenckii. The substance, which may have a role in fungal virulence, has been characterized mainly using spectroscopic methods (1H and 13C nuclear magnetic resonance and high resolution ...
Da Graça Sgarbi, Diana Bridon +5 more
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Fluorescence properties of ergosterol
Journal of Photochemistry, 1985Abstract Ergosterol is fluorescent in low temperature matrices as are several molecules with a 1,3-diene structure. The fluorescence lifetime of 3.3 ns and the fluorescence quantum yield of 0.19 have been obtained in a methyl-cyclohexane-isopentane matrix at 77 K.
Nobuaki Nakashima +4 more
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SELECTIVELY IRRADIATED ERGOSTEROL
Journal of the American Medical Association, 1936Recent literature on vitamin D and ergosterol irradiation products has been voluminous and it is beyond the scope of the present paper to include more than a brief review of a part of this work. Those who have been interested are well acquainted with the history of the recognition of rickets as a deficiency disease, of the discovery that this disease ...
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[Ergosterol as a measure of fungus growth in fodder. I. Ergosterol content of grain].
Archiv fur Tierernahrung, 1988Ergosterol was determined as a chemical indicator of fungal biomass in wheat (w), barley (b), oats (o), and grain corn (c). In samples selected by microscopy and odour as an indicator of good mycological quality the following contents (mg/kg dry matter) were found: 1.96 +/- 0.72 (w), 2.43 +/- 0.82 (b), 2.42 +/- 1.4 (o), 0.61 +/- 0.37 (c).
H M, Müller, C, Lehn
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