FR2111014A5 - Isolation of dl-isoleucine - by multistage fractional crystallisation with countercurrent passage of mother liquors - Google Patents
Isolation of dl-isoleucine - by multistage fractional crystallisation with countercurrent passage of mother liquorsInfo
- Publication number
- FR2111014A5 FR2111014A5 FR7135854A FR7135854A FR2111014A5 FR 2111014 A5 FR2111014 A5 FR 2111014A5 FR 7135854 A FR7135854 A FR 7135854A FR 7135854 A FR7135854 A FR 7135854A FR 2111014 A5 FR2111014 A5 FR 2111014A5
- Authority
- FR
- France
- Prior art keywords
- isoleucine
- isolation
- fractional crystallisation
- mother liquors
- multistage fractional
- 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.)
- Expired
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
(I) is isolated from mixtures of isomeric isoleucine by (a) subjecting the mixture to multistage fractional crystallisation from aqs. soln., the mother liquor being passed in countercurrent; or (b) epimerising the isomer mixture by heating in alkali metal hydroxide soln., separating by adjusting the pH to ca. 5.5, and treating the mixture obtained as in (a).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702048790 DE2048790C3 (en) | 1970-10-05 | Process for the production of D, L-isoleucine |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2111014A5 true FR2111014A5 (en) | 1972-06-02 |
Family
ID=5784203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7135854A Expired FR2111014A5 (en) | 1970-10-05 | 1971-10-05 | Isolation of dl-isoleucine - by multistage fractional crystallisation with countercurrent passage of mother liquors |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS549172B1 (en) |
FR (1) | FR2111014A5 (en) |
IT (1) | IT942203B (en) |
NL (1) | NL7111760A (en) |
-
1971
- 1971-08-26 NL NL7111760A patent/NL7111760A/xx not_active Application Discontinuation
- 1971-10-04 IT IT5325671A patent/IT942203B/en active
- 1971-10-05 FR FR7135854A patent/FR2111014A5/en not_active Expired
- 1971-10-05 JP JP7824171A patent/JPS549172B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
NL7111760A (en) | 1972-04-07 |
IT942203B (en) | 1973-03-20 |
DE2048790A1 (en) | 1972-04-06 |
JPS549172B1 (en) | 1979-04-21 |
DE2048790B2 (en) | 1976-04-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |