JPS5626195A - Separation of alpha-isopropylmalic acid - Google Patents
Separation of alpha-isopropylmalic acidInfo
- Publication number
- JPS5626195A JPS5626195A JP10210179A JP10210179A JPS5626195A JP S5626195 A JPS5626195 A JP S5626195A JP 10210179 A JP10210179 A JP 10210179A JP 10210179 A JP10210179 A JP 10210179A JP S5626195 A JPS5626195 A JP S5626195A
- Authority
- JP
- Japan
- Prior art keywords
- salt
- isopropylmalic acid
- acid
- isopropylmalic
- concentrated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
PURPOSE: To obtain α-isopropylmalic acid of high purity in high yield, by adding Ca(OH)2 etc. to a fermentation liquor of α-isopropylmalic acid, and separating the formed precipitate.
CONSTITUTION: Ca(OH)2 or a water-soluble Ca salt, e.g. CaCl2 or CaBr2, in an amount of about equimolar or 5 times that of α-isopropylmalic acid is added to a fermentation liquor of α-isopropylmalic acid or an intermediate process liquor from which the α-isopropylmalic acid is separated, and the mixture is concentrated or cooled top recipitate and separate Ca salt of the α-isopropylmalic acid. The mother liquor after the separation of the Ca salt is concentrated to crystallize the remaining Ca salt. The Ca salt is then suspended in water, and sulfuric acid is added to adjust the pH of the suspension to 2.5±0.5. The Ca salt is dissolved in the suspension and passed through a cation exchange resin column to remove the cation. The breakthrough liquid thus obtained is then concentrated to deposit the α-isopropylmalic acid.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10210179A JPS5626195A (en) | 1979-08-10 | 1979-08-10 | Separation of alpha-isopropylmalic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10210179A JPS5626195A (en) | 1979-08-10 | 1979-08-10 | Separation of alpha-isopropylmalic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5626195A true JPS5626195A (en) | 1981-03-13 |
Family
ID=14318391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10210179A Pending JPS5626195A (en) | 1979-08-10 | 1979-08-10 | Separation of alpha-isopropylmalic acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5626195A (en) |
-
1979
- 1979-08-10 JP JP10210179A patent/JPS5626195A/en active Pending
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