摘要:
A method of producing a composition comprising a high concentration of very long chain polyunsaturated fatty acids (VLCPUFAs) from natural oils such as fish oil, squid oil, algal oil and krill oil. In addition, a composition comprising a high concentration of very long chain polyunsaturated fatty acids isolated from such natural sources; as well as to a process for isolating separate fractions of very long chain polyunsaturated fatty acids having identical chain lengths but different degrees of unsaturation from such highly concentrated compositions is disclosed.
摘要:
A process for producing α- and φ-hydroxy fatty acids by treating lanolin fatty acids with boric acid to esterify hydroxy fatty acids contained therein, distilling the reaction product in a vacuum to separate and purify the borates of the hydroxy fatty acids and non-hydroxy fatty acids, hydrolyzing the purified borates, and distilling the hydrolyzate; each of the lanolin fatty acids and esters thereof thus obtained; and cosmetics and external preparations prepared therefrom. The invention process provides light-colored, nearly odorless lanolin fatty acids readily and efficiently on an industrial scale, and the obtained acids can be utilized in the fields of medicines and cosmetics.
摘要:
The present invention relates to a method for isolating and purifying only a certain unsaturated fatty acid in a high purity from fatty acids present in oils including vegetable oils and fish oils by means of crystallization. More particularly, the present invention relates to a method for isolating and purifying only the desired unsaturated fatty acid in a high purity from fatty acids present in oils by selectively using a urea-addition crystallization, and a cooling crystallization or a high liquid chromatography. Specifically, the present invention provides a method for isolating and purifying linoleic acid or oleic acid as unsaturated fatty acids, in a high purity of at least 99% by subjecting fatty acids derived from oils, particularly, a vegetable oil containing linoleic acid or oleic acid at a high concentration, such as safflower oil, corn germ oil or olive oil, as the raw material to two-step urea-addition crystallization using methanol and urea and then crystallizing the concentrated unsaturated fatty acid from an organic solvent under cooling at temperature of -5°C to -10°C without stirring, or a method for isolating eicosapentaenoic acid (EPA) as unsaturated fatty acid, in a high purity of at least 99% by subjecting fatty acids derived from oils, particularly, a fish oil containing EPA at a high concentration, such as sardine oil, as the raw material to two-step urea-addition crystallization using methanol and urea to obtain a concentrated unsaturated fatty acid having a high purity and then further purifying the high-purified, concentrated fatty acid by means of a high liquid chromatography using a column filled with Ag-silica or Ag-alumina.
摘要:
A process for producing alpha - and omega -hydroxy fatty acids by treating lanolin fatty acids with boric acid to esterify hydroxy fatty acids contained therein, distilling the reaction product in a vacuum to separate and purify the borates of the hydroxy fatty acids and non-hydroxy fatty acids, hydrolyzing the purified borates, and distilling the hydrolyzate; each of the lanolin fatty acids and esters thereof thus obtained; and cosmetics and external preparations prepared therefrom. The invention process provides light-colored, nearly odorless lanolin fatty acids readily and efficiently on an industrial scale, and the obtained acids can be utilized in the fields of medicines and cosmetics.
摘要:
The present invention relates to a method for isolating and purifying only a certain unsaturated fatty acid in a high purity from fatty acids present in oils including vegetable oils and fish oils by means of crystallization. More particularly, the present invention relates to a method for isolating and purifying only the desired unsaturated fatty acid in a high purity from fatty acids present in oils by selectively using a urea-addition crystallization, and a cooling crystallization or a high liquid chromatography. Specifically, the present invention provides a method for isolating and purifying linoleic acid or oleic acid as unsaturated fatty acids, in a high purity of at least 99% by subjecting fatty acids derived from oils, particularly, a vegetable oil containing linoleic acid or oleic acid at a high concentration, such as safflower oil, corn germ oil or olive oil, as the raw material to two-step urea-addition crystallization using methanol and urea and then crystallizing the concentrated unsaturated fatty acid from an organic solvent under cooling at temperature of -5°C to -10°C without stirring, or a method for isolating eicosapentaenoic acid (EPA) as unsaturated fatty acid, in a high purity of at least 99% by subjecting fatty acids derived from oils, particularly, a fish oil containing EPA at a high concentration, such as sardine oil, as the raw material to two-step urea-addition crystallization using methanol and urea to obtain a concentrated unsaturated fatty acid having a high purity and then further purifying the high-purified, concentrated fatty acid by means of a high liquid chromatography using a column filled with Ag-silica or Ag-alumina.
摘要:
3-Stufiges Verfahren zur Entfernung von Polyensäuren aus einem Fettsäure- oder Fettsäureestergemisch das besteht aus:
zur Entfernung von Polyensäuren, wie Linolensäure, insbesondere ein verbessertes Verfahren zur Gewinnung von technischer Ölsäure. Das Verfahren ist 3-stufig:
1. Konjugierung der im Ausgangsprodukt vorkommenden Polyensäuren bis zu 90% oder mehr in alkalischem Milieu; 2. Selektive Polymerisation der Konjuensäuren bei 100-250° C durch Einleiten von Sauerstoff oder Luft in das Fettsäuregemisch über einen Zeitraum von 0,5-2 h (Luftmenge 30-60 1/1000 g); 3. Abtrennen der gebildeten Polymersubstanzen durch Destillation, wobei diese im Rückstand verbleiben. Das Monoensäure enthaltende Destillationsprodukt enthält