Results 111 to 120 of about 780 (164)
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Lipids, 1973
AbstractSitosterol and stigmastanol are obtained from the Raney nickel catalyzed hydrogenation of stigmasterol. The sitosterol was separated from stigmastanol by silica gel column chromatography of its dibromide. Sitosterol was also obtained from the steam deodorizer distillate of crude cottonseed oil and purified by manifold recrystallizations of the ...
Henry W. Kircher, Fumiko U. Rosenstein
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AbstractSitosterol and stigmastanol are obtained from the Raney nickel catalyzed hydrogenation of stigmasterol. The sitosterol was separated from stigmastanol by silica gel column chromatography of its dibromide. Sitosterol was also obtained from the steam deodorizer distillate of crude cottonseed oil and purified by manifold recrystallizations of the ...
Henry W. Kircher, Fumiko U. Rosenstein
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Phytochemistry, 1969
Abstract Sitosterol-3- 14 C was converted by a Digitalis lanata plant to progesterone, digitoxigenin, gitoxigenin, and digoxigenin. The results indicate that sitosterol functions as a starting material for the biosynthesis of other steroids in plants.
Raymond D. Bennett +2 more
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Abstract Sitosterol-3- 14 C was converted by a Digitalis lanata plant to progesterone, digitoxigenin, gitoxigenin, and digoxigenin. The results indicate that sitosterol functions as a starting material for the biosynthesis of other steroids in plants.
Raymond D. Bennett +2 more
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Synthesis, isolation and characterisation of β-sitosterol and β-sitosterol oxide derivatives
Organic & Biomolecular Chemistry, 2005Beta-sitosterol is the most prevalent plant cholesterol derivative (phytosterol) and can undergo similar oxidation to cholesterol, leading to beta-sitosterol oxides. The biological impact of phytosterol oxides has only been evaluated in a phytosterol blend (usually of beta-sitosterol, campesterol, stigmasterol and dihydrobrassicasterol).
Florence O, McCarthy +7 more
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Quantitation of β‐Sitosterol in Bourbon
Alcoholism: Clinical and Experimental Research, 1991Four phytoestrogens have previously been isolated and identified in alcoholic beverages. Before studies to evaluate the degree of estrogenicity of these substances can be performed, it is necessary to determine appropriate doses to be administered to experimental animals.
E R, Rosenblum +3 more
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Absorbability of β-sitosterol in humans
Metabolism, 1969Abstract Tritium labeled β-sitosterol was administered orally to 5 normal humans and to 5 terminal patients. Isolation of tritium-labeled sterols from plasma and red blood cells of normal male subjects showed some absorption had occurred, but it was much less than for comparable doses of labeled cholesterol.
R G, Gould +4 more
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The effects of statins and sitosterols: Benefit or not?
Current Atherosclerosis Reports, 2008Statins reduce plasma plant sterol concentrations and, less consistently, their ratios to cholesterol in short-term studies. They most likely accomplish this by decreasing their transport protein levels. In long-term treatment with large doses of effective statins, serum plant sterol concentrations and frequently their ratios to cholesterol are ...
Tatu A, Miettinen, Helena, Gylling
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The effects of sitosterol on serum lipids
The American Journal of Medicine, 1955Abstract 1.1. The effects of the plant sterol, beta-sitosterol, on serum cholesterol, other lipids and lipoproteins have been studied. Twenty to 25 gm. of sitosterol per day was administered for prolonged periods to fourteen patients on free diets. 2.2.
M M, BEST +3 more
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Effects of cholesterol and ß-sitosterol in the gerbil
American Journal of Physiology-Legacy Content, 1959The effect of increasing levels (0–1.0%) of dietary cholesterol has been studied in the Mongolian gerbil. A consistent and proportional elevation of serum cholesterol was observed after one week of cholesterol administration. In addition, the simultaneous administration of ß-sitosterol prevented this hypercholesteremia.
S, GORDON +2 more
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Sitosterol as an antioxidant in frying oils
Food Chemistry, 2013The antioxidative effect of sitosterol at 1, 2 and 5% levels, in triolein, refined canola, high oleic sunflower and flaxseed oils, continuously heated for a period of up to 72 h at frying temperature of 180 °C, was studied. High Pressure Size Exclusion Chromatography (HPSEC) was used to monitor changes in peak areas of triacylglycerol (TG) polymer ...
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Rat toxicity studies with β-sitosterol
Journal of Ethnopharmacology, 1990Chronic administration of beta-sitosterol subcutaneously to rats for 60 days was well tolerated and there was no clear cut evidence of any gross or microscopic lesions either in the liver or kidney. Liver and kidney function tests were assessed by determining the blood/serum parameters like haemoglobin, blood glucose, serum protein, serum bilirubin ...
T, Malini, G, Vanithakumari
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