Title:
アスタキサンチン及びカンタキサンチンの精製方法
Document Type and Number:
Japanese Patent JP6689831
Kind Code:
B2
Abstract:
The present invention relates to a process for purifying the xanthophylls astaxanthin and canthaxanthin. The process comprises suspending the xanthophyll in an organic solvent or solvent mixture, treating the suspension of the xanthophyll in the organic solvent or solvent mixture at elevated temperature, and subsequent separation off of the xanthophyll from the solvent by a solid-liquid separation, wherein the organic solvent is selected from ketones of the general formula (I) and mixtures of ketones of the general formula (I) where R1 is C1-C4 alkyl and R2 is selected from C1-C6 alkyl, C3-C8 cycloalkyl, phenyl and benzyl, wherein the phenyl rings in the two last-mentioned radicals are unsubstituted or can have 1 or 2 methyl groups, or R1 and R2 together are linear C4-C6 alkylene, which can bear 1, 2 or 3 methyl groups as substituents.
Inventors:
Schaefer, Bernd
Siegel, Wolfgang
Siegel, Wolfgang
Application Number:
JP2017517273A
Publication Date:
April 28, 2020
Filing Date:
October 01, 2015
Export Citation:
Assignee:
BASF SE
International Classes:
C07C403/24
Domestic Patent References:
| JP2004529151A | ||||
| JP11180901A | ||||
| JP7118226A | ||||
| JP2007308432A | ||||
| JP2006507332A |
Foreign References:
| WO2007114461A1 |
Attorney, Agent or Firm:
Yusuke Hiraki
Satoshi Fujita
Eiichi Arai
Natsuo Tanaka
Naoko Kikuta
Hiramatsu Chiharu
Satoshi Fujita
Eiichi Arai
Natsuo Tanaka
Naoko Kikuta
Hiramatsu Chiharu