Title:
極性の、好ましくは水性の溶媒から2-ケト-L-グロン酸(KGA)を抽出する方法
Document Type and Number:
Japanese Patent JP2006516148
Kind Code:
A
Abstract:
The present invention relates to a process for extracting 2-keto-L-gulonic acid (KGA) from a polar, preferably aqueous, solvent, preferably from a solvent which comprises a mixture of ascorbic acid and 2-keto-L-gulonic acid, by means of liquid/liquid extraction using an extractant which comprises a tertiary amine and a polar organic diluent. The process of the invention preferably also comprises steps for back-extraction of the KGA and recycling of the extractant. The present invention likewise relates to a process for preparing ascorbic acid from KGA and isolating the prepared ascorbic acid.
Inventors:
Domsuke, Thomas
Martin, Martin
Decato, Petra
Sauer, Friedrich
Martin, Martin
Decato, Petra
Sauer, Friedrich
Application Number:
JP2005502539A
Publication Date:
June 22, 2006
Filing Date:
December 13, 2003
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
C07C51/48; B01D11/04; C07C59/215; C07H1/06; C07H7/027; C07D307/62
Attorney, Agent or Firm:
Yusuke Hiraki
Ishii Teiji
Satoshi Fujita
Ishii Teiji
Satoshi Fujita