Journal ArticleDOI
Sterol metabolism. XXII. Gas chromatographic differentiation among cholesterol hydroperoxides.
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This article is published in Journal of Chromatography A.The article was published on 1973-01-03. It has received 38 citations till now.read more
Citations
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Journal ArticleDOI
Cholesterol autoxidation--current status
TL;DR: The main outline of the pathway for cholesterol oxidation is fairly well understood and involves initial formation of allylic hydroperoxides as mentioned in this paper, and HPLC and GC techniques are available for measuring the concentration of cholesterol oxides in animal derived lipids.
Journal ArticleDOI
Capillary column gas-liquid chromatographic resolution of oxidized cholesterol derivatives
S.Won Park,Paul B. Addis +1 more
TL;DR: After derivatization as trimethylsilyl ethers the foregoing diols, alpha-epoxide, cholestane-triol, 7-ketocholesterol, and cholesta-3,5-dien-7-one were completely resolved on a DB-1 column.
Journal ArticleDOI
High-performance liquid chromatography of cholesterol autoxidation products
Ghulam Ansari,Leland L. Smith +1 more
TL;DR: In this article, a high-performance liquid chromatography with microparticulate silica gel and octadecyl silica reversed-phase columns accords ready resolution of the common autoxidation products of cholesterol.
Journal ArticleDOI
Cholesterol oxides I. Isolation and determination of some cholesterol oxidation products
G. Maerker,J. Unruh +1 more
TL;DR: In this article, cholesterol in purified triolein was subjected to saponification by two procedures employing hot alkali and was found to give rise to oxidation products despite precautions, and the determination of standard cholesterol oxides by direct on-column GC was demonstrated with good resolution.
Journal ArticleDOI
Cholesterol oxidation in meat from chickens fed alpha-tocopherol- and beta-carotene-supplemented diets with different unsaturation grades.
TL;DR: In this article, B-Ring and side-chain oxysterols were evaluated in chicken fed diets differing by the kind of oil or fat added to the chicken, and the effect of supplementary levels of natural antioxidants, such as alpha-tocopherol and beta-carotene, on the meat cholesterol oxidative stability was also studied.
References
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Journal ArticleDOI
Thin-layer chromatographic examination of cholesterol autoxidation
TL;DR: In this paper, a semi-quantitative photoelectric densitometric procedure for evaluation of one-dimensional chromatoplates is described, and the complexity of the air oxidation of cholesterol is emphasized as is the necessity of careful control work in chemical and biological systems containing cholesterol.
Journal ArticleDOI
Detection of sterol hydroperoxides on thin-layer chromatoplates by means of the wurster dyes
TL;DR: A specific and sensitive means of detection of sterol hydroperoxides on irrigated thin-layer chromatoplates using N,N-dimethyl-p-phenylenediamine dihydrochloride has been developed and autoxidation of cholesterol in the solid state, in the irradiated solidState, in colloidal dispersion, and in aerated solution is shown.
Journal ArticleDOI
Sterol metabolism. VII. Autoxidation of cholesterol via hydroperoxide intermediates
Journal ArticleDOI
Sterol metabolism. II. Gas chromatographic recognition of cholesterol metabolites and artifacts.
TL;DR: The gas chromatographic characterization of common sterols related to cholesterol or implicated in cholesterol autoxidation is deseribed and relative retention data are given for sixty cholesterol derivatives.
Journal ArticleDOI
Autoxidation products from cholesterol.
J. A. Fioriti,R. J. Sims +1 more
TL;DR: Thin-layer chromatography and gas-liquid chromatography were used to separate and identify products from the autoxidation of cholesterol, and cholesterol-a-epoxide and 1,4-cholestadien-3-one were found.