Results 161 to 170 of about 56,530 (211)

Sterols, esterified sterols, and glycosylated sterols of cowpea lipids (Vigna unguiculata)

Journal of Agricultural and Food Chemistry, 1981
4 sterol-containing lipid fractions, viz., free sterol, esterified sterol, sterol glycoside, and esterified sterol glycoside, were isolated from the chloroform/methanol extracted lipids of cow pea by preparative column and TLC. On a total lipid basis, these comprised 0.13%, 0.024%, 0.036%, and 0.029%.
V G, Mahadevappa, P L, Raina
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Inhibition of sterol biosynthesis by 14α-hydroxymethyl sterols

Biochemical and Biophysical Research Communications, 1978
Abstract 14α-Hydroxymethyl-5α-cholest-7-en-3β-ol (I) and 14α-hydroxymethyl-5α-cholest-6-en-3β-ol (II) have been prepared by chemical synthesis from 3β-acetoxy-7α,32-epoxy-14α-methyl-5α-cholestane. Compound I, previously shown to be efficiently convertible to cholesterol upon incubation with rat liver homogenate preparations, has been found to be a ...
Schroepfer, G J, Pascal, R A, Shaw, R, Kandutsch, A A   +3 more
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Sterols in microorganisms

Applied Microbiology and Biotechnology, 2003
Sterols are vital components of all eukaryotic cells. This review describes the variety of sterol structures found in microalgae, yeasts, fungi, protozoans and microheterotrophs. Reports of the occurrence of sterols in prokaryotic cells are critically assessed.
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Sterol metabolism. III. Sterols of marine waters

Lipids, 1968
AbstractThe detection and tentative identification of three sterols, cholesterol, stigmasterol, and β‐sitosterol, in hexane extracts of Gulf of Mexico waters has been achieved by using thin‐layer and gas chromatographic procedures. The identifications are assigned on the basis of chromatographic properties of the free sterols, of their acetates, and of
W, Stephen Matthews, L L, Smith
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Sterols and sterol biosynthesis in the slugAplysia depilans

Experientia, 1973
Aplysia depilans ist fahig, Lipide, einschliesslich der Sterinen, aus Azetat zu synthetisieren. Cholesterin ist das wichtigste Sterin (87%), aber auch andere Sterine, bisher bei Opisthobranchia unbekannt, wurden gefunden.
P. A. Voogt, J. W. A. van Rheenen
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Sterols and sterol glycosides of Bryonia alba

Chemistry of Natural Compounds, 1977
It has been shown that the roots ofBryonia alba contain cholest-7-en-3β-ol, 24-methylcholest-7-en-3β-ol, 24-ethylcholest-7-en-3β-ol, 24-methylenecholest-7-en-3β-ol, 24-ethylidenecholest-7-en-3β-ol, 24-ethyl-4-methylcholest-7-en-3β-ol, 24-ethylidene-4-methylcholest-7-en-3β-ol, and also previously undescribed 3-O-β-glucopyranosides of the above-mentioned
A. G. Panosyan, G. M. Avetisyan, V. A. Mnatsakanyan   +2 more
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Phase transitions of sterols and sterol—lecithin sterol—lecithin mixtures

Chemistry and Physics of Lipids, 1976
Abstract Sterols exhibit reversible htermal transitions below their melting points which are dependent on the state of hydration and on the structure of the aliphatic substituent at C 17 . The endotherm exhibited by cholesterol can be abolished by mixing with hydrated phospholipids at molar ratios below 1 : 1 but reappears in a metastable form at ...
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Intestinal sterols. V. Reduction of sterols by intestinal microorganisms

Archives of Biochemistry and Biophysics, 1957
Abstract Cholesterol was reduced to coprostanol by fecal microorganisms grown on a sterol-free brain medium. β-Sitosterol and 7-dehydrocholesterol were reduced to coprositostanol (24-ethylcoprostanol) and Δ 7 -coprostenol, respectively; Δ 7 -cholestenol underwent no change during the incubation.
Coleman, D L, Baumann, C A
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Sterol Biosynthesis

Annual Review of Biochemistry, 1967
I D, Frantz, G J, Schroepfer
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Tumor sterols

Metabolism, 1969
E A, Day, G T, Malcom, M F, Beeler
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