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Sterol Composition of Some Seaweeds

✍ Scribed by Ilias, A. M. ;Connor, W. E. ;Lin, D. S. ;Ahmad, M. U.

Publisher
John Wiley and Sons
Year
1985
Weight
237 KB
Volume
87
Category
Article
ISSN
0931-5985

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✦ Synopsis

A h m a d * + Elevenspecies ofseaweeds wereanalyzed forthecontent andcomposition of sterols utilizing column and gas chromatography, and gas chromatography-mass spectrometry. Rhodophyta species contain primarily cholesterol; only one species contains large amount of desmosterol. Fucosterol is the dominant sterol of Phaeophyta, apparently the major sterol of every species examined. Most Phaeophyta +so contain small amount of cholesterol and biosynthetic precursors of fucosterol. Sterol content in Chlorophyta is ve1y similar to higherplants,and it contains large amount of cholestero1.Thecompositional study of sterols may be of value in the systematics of plants such as the Rhodophyta, Phaeophyta and especially the Chlorophyta.

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## Abstract The free sterols, the sterol esters and the sterol glycosides of the raw soya and corn oils as well as those of the technical lecithin and the deodorizer distillate of the latter oils were isolated by preparative TLC. The composition of each of the isolated sterol derivatives was determ