Topic
Docosenoic Acid
About: Docosenoic Acid is a research topic. Over the lifetime, 64 publications have been published within this topic receiving 1383 citations.
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16 citations
TL;DR: In this article, the fatty acid compositions of the seed oils of some cruciferous species from other origins were examined for comparison and other analytical characteristics have been determined by gas chromatography.
16 citations
TL;DR: In this article, the effect of hydrostatic pressure on the polymorphic transformation and melting of erucic acid and asclepic acid was investigated by means of a high-pressure differential thermal analysis.
16 citations
TL;DR: One sample of canola seed and five samples of screenings were commercially processed to yield first an “expeller oil” and subsequently an "extractor oil" by the hexane extraction of the residue and the fatty acids and sterols appear to be nutritionally useful and innocuous in all respects.
Abstract: One sample of canola seed (variety Tower) and five samples of screenings were commercially processed to yield first an “expeller oil” and subsequently an “extractor oil” by the hexane extraction of the residue. The screening samples contained 25–50% intact or broken canola seed. The balance included 21–31% weed seeds (especially lambsquarter and stinkweed), hulls, fragments of the embryo, and chaff. All the oil samples were analyzed for sterol and fatty acid composition. The extractor screening samples had slightly higher sterol contents than the corresponding expeller samples, while the Tower samples gave the lowest values. The averages (in mg/g oil or extract) for the extractor screening samples were: brassicasterol, 1.0; campesterol, 4.1; and β-sitosterol, 7.3. For expeller screening samples the average were: 0.9, 3.6 and 6.2 and for the Tower oils they were, respectively, 0.9, 3.8, 5.3 and 0.9, 3.5, 4.7. The fatty acid compositions of the screening samples for both extractor and expeller oils were similar to that of the Tower oil except for the higher proportions of docosenoic acid (22:1) and eicosenoic acid (20:1) and the more obvious presence of three C18 conjugated dienes totalling up to 0.6% of one screening oil sample. The docosenoic acid level (mainly erucic acid) ranged from 3.0 to 7.0% for the extractor oils and from 2.5 to 8.0% for the expeller samples, compared to 0.1% for the two Tower oils. The oil contents of the screenings ranged from 20 to 30%, and the fatty acids and sterols appear to be nutritionally useful and innocuous in all respects.
16 citations
TL;DR: The liver oil from the South American Basking shark has been fractionated by silica gel chromatography and analyzed by the new method of combined gas-chromatography mass spectrometry, presenting mass spectral data for squalene for the first time along with the low electron energy-mass spectra for pristane and phytane.
Abstract: The liver oil from the South American Basking shark has been fractionated by silica gel chromatography and analyzed by the new method of combined gas-chromatography mass spectrometry. The major compounds of the nonsaponifiable fraction are pristane and squalene, which account for 7.6 and 31.3% of the oil. The saponifiable fraction contains normal fatty acids from C14 to C22; the four major components are palmitic, oleic, and the monounsaturated eicosenoic and docosenoic acids. No correlation was observed between the hydrocarbons (essentially all isoprenoid derivatives) and the fatty acids (essentially all normal) of this oil. The same treatment was applied to a sample of commercial pristane which was obtained from Basking shark liver oil. It was found to contain about 1% phytane and small amounts of octadecane, nonadecane, and methyl and ethyl palmitates. Mass spectral data for squalene are presented for the first time along with the low electron energy-mass spectra for pristane and phytane.
15 citations