RU2000131224A

RU2000131224A - METHOD FOR EXTRACTING CAROTINE FROM CAROTIN CONTAINING MATERIALS

Info

Publication number: RU2000131224A
Application number: RU2000131224/13A
Authority: RU
Inventors: Мартин ДРЕШЕР; Эхард ВАЙДНЕР
Original assignee: ПЕТЕР Зигфрид
Priority date: 1998-05-11
Filing date: 1999-05-11
Publication date: 2003-01-10

Claims

1. A method of extracting carotenes from carotene-containing materials, comprising extracting a carotene-containing material with an extractant selected from the group consisting of acetonitrile, N-methylpyrrolidone, N, N-dimethylformamide, N, N-dimethylacetamide, 4-formylmorpholine, 4-acetylmorpholine, 4-methyl 4-phenylmorpholine, with the formation of two liquid phases, one of which is a carotene-depleted refined phase, and the other is a carotene-enriched extraction phase, and the separation of two liquid phases.

2. The method according to p. 1, in which the named carotene-containing raw materials are selected from fats and oils of biological origin, including: palm oil, soybean oil, rapeseed oil, corn oil, hemp oil, sunflower oil, olive oil, linseed oil, beet oil , castor oil, sesame oil, cocoa butter, rice germ oil, cottonseed oil, grape seed oil, wheat germ oil, palm seed oil, coconut oil, peanut butter and mixtures thereof.

3. The method according to any claims. 1 and 2, in which the specified extraction is carried out in countercurrent.

4. The method according to any paragraphs. 1-3, in which the extractant is removed from at least one of the named purified phase and the extract phase by liquid-liquid extraction with water.

5. The method according to any claims. 1-3, in which the extractant is removed from at least one of said purified and extract phases by absorption with nitrogen, steam or alcohol vapors selected from the group consisting of methanol, ethanol and isopropanol and mixtures thereof, preferably under reduced pressure.

6. The method according to any one of paragraphs. 1-3, in which the extractant is removed from at least one of these phases, including the refined phase and the extraction phase by extraction with compressed gases selected from the group comprising carbon dioxide, propane, propene, butane and mixtures thereof, preferably under conditions close to critical.

7. The method according to any one of paragraphs. 1-6, in which carotenes are reduced from the specified extraction phase by crystallization and filtration.

8. The method according to any one of paragraphs. 1-7, in which the carotene-containing material before extraction is subjected to pre-treatment selected from degumming, filtration, deacidification, as well as combinations thereof,
9. The method according to any one of paragraphs. 1-8, in which the extractant is a mixture of N-methylpyrrolidone and methanol.

10. The method according to p. 9, in which the mixture contains from 30 to 70 wt. % methanol, preferably from 40 to 60 wt. % methanol.

11. The method according to any one of paragraphs. 1-8, in which the extractant is a mixture of 4-methylmorpholine and water.

12. The method according to p. 11, in which the mixture contains from 3 to 20 mass% of water, preferably from 5 to 15 wt. % water.

13. The method according to any one of paragraphs. 1-8, in which the extractant is a mixture of 4-formylmorpholine and methanol.

14. The method according to p. 13, in which the mixture contains from 5 to 30 wt. % methanol, preferably from 5 to 10 wt. % methanol.

15. The method according to any one of paragraphs. 1-14, in which the extraction is carried out at temperatures in the range from about 20 to about 120 ^{o C.} , preferably in the range from about 40 to about 80 ^o C.