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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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TL;DR: In this article, the Erucasaure-Richtlinie Nr. 7.7.80/891 is used for the determination of erucic acid in the presence of isomeric docosenoic acids.
Abstract: In den Landern der Europaischen Gemeinschaft wird durch die Erucasaure-Richtlinie von 20. 7. 1976 der Erucasauregehalt (nicht der Docosensauregehalt) in Speiseolen und -fetten sowie in Lebensmitteln mit Fettzusatzen auf z. Z. 5% beschrankt. Zur Bestimmung des Erucasauregehaltes sieht die EG-Richtlinie Nr. 80/891 ein Verfahren vor, bei dem die Erucasaure auch in Gegenwart von Isomeren der Docosensaure bestimmt werden kann. Bei diesem Verfahren werden die Fettsauremethylester zunachst auf Silbernitrat enthaltenden Dunnschichtplatten bei minus 25°C vorfraktioniert. Dabei wird die Erucasaure (13-cis-Docosensaure) von den insbesondere in rohen und hydrierten Fischolen vorkommenden Docosensaure-Isomeren, der Cetoleinsaure (11-cis-Docosensaure) sowie den trans-Docosensauren, abgetrennt. Der Erucasauregehalt kann dann aus dem Eluat der Fraktionen unter Zusatz eines inneren Standards gaschromatographisch bestimmt werden. Es wird uber Arbeiten im Zusammenhang mit der Entwicklung der Methode, an der die Bundesanstalt fur Fettforschung beteiligt war, berichtet. Dazu gehoren auch die Trennung von reinen Docosensaure-Isomeren sowie die Bestimmung des Erucasauregehaltes in einer Reihe von rohen und hydrierten Fischolen.
Determination of Erucic Acid in the Presence of Isomeric Docosenoic Acids
In the countries belonging to the European Community the Erucic Acid Directive of 20. 7. 1976 restricts the level of erucic acid (not docosenoic acid) in edible oils and fats and foodstuffs to which fats and oils have been added to 5%. For the determination of the erucic acid content the EEC-Directive no. 80/891 specifies a procedure that enables the determination of erucic acid even in the presence of isomeric docosenoic acids. According to this procedure the methyl esters of fatty acids are first fractionated at –25°C on thin-layer plates containing silver nitrate. Thus, erucic acid (13-cis-docosenoic acid) is separated from isomeric docosenoic acids, such as cetoleic acid (11-cis-docosenoic acid) and trans-docosenoic acids, that are frequently found in crude and hydrogenated fish oils. The erucic acid content can be determined by gas chromatography of the eluted fractions after the addition of an internal standard. The method has been developed in collaboration with the Federal Center for Lipid Research. Their work concerned with the development of the method is reported. It includes the separation of pure docosenoic acid isomers and the determination of erucic acid content in a series of crude and hydrogenated fish oils.
2 citations
2 citations
TL;DR: Weanling male rats were fed calcium-deprived diets containing 15% lipids, of which half is cis- or trans-docosenoic acid, for 5, 12 or 28 days, and brassidic acid induced a greater triglyceride accumulation than erucic acid did.
Abstract: Weanling male rats were fed calcium-deprived diets containing 15% lipids, of which half is cis- or trans -docosenoic acid, for 5, 12 or 28 days. Elaidic or oleic a
1 citations
Patent•
13 Feb 1986
TL;DR: In this article, an alga is homogenized or cut to prepare an enzymic solution containing an enzyme synthesizing eicosapentaenoic acid, which is then added to an emulsion of linolenic acid or a fat or oil containing the linolenics acid or solution of a water-soluble salt of the above-mentioned fatty acid.
Abstract: PURPOSE:To produce high-purity eicosapentaenoic acid by enzymic reaction, by reacting an enzyme synthesizing the eicosapentaenoic acid in an alga with linolenic acid or a fat or oil containing the linolenic acid. CONSTITUTION:An alga is homogenized or cut to prepare an enzymic solution containing an enzyme synthesizing eicosapentaenoic acid, which is then added to an emulsion of linolenic acid or a fat or oil containing the linolenic acid or solution of a water-soluble salt of the above-mentioned fatty acid and reacted therewith. In the process, 4-80wt%, based on the linolenic acid, acetic acid is added to the enzymic reaction solution, and the final hydrogen ion concentration in the reaction solution is adjusted to 3-10pH with sodium hydrogencarbonate. When the linolenic acid is used as a substrate, the contents of docosenoic acid and docosahexaenoic acid contained in the whole lipid of the product are both <=3wt%.
1 citations
Patent•
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09 Sep 1991
TL;DR: The hair tonic base can be obtained by formulation of 0.1-10wt.% of a docosenoic acid (e.g. erucic acid) or its derivative.
Abstract: PURPOSE:To provide a hair tonic base effective for trichlogenous promotion, prevention of depilation, suppression of dandruff and pruritus, etc., containing as active ingredient, a docosenoic acid or its derivative. CONSTITUTION:The objective hair tonic base can be obtained by formulation of 0.1-10wt.% of a docosenoic acid (e.g. erucic acid) or its derivative (e.g. brassidic acid monoglyceride) followed by mixing with the established components used in existing hair tonics and then preparation through conventional processes. The present hair tonic base is to be used in the form of a hair tonic, hair cream, hair lotion, hair oil, pomade, shampoo, rinse, aerosol preparation, ointment, etc. Docosenoic acids have excellent trichogenous effect and 5alpha-reductase activity-inhibitory effect.
1 citations