GB1368596A - Process for the preparation of malic acid - Google Patents
Process for the preparation of malic acidInfo
- Publication number
- GB1368596A GB1368596A GB2963373A GB2963373A GB1368596A GB 1368596 A GB1368596 A GB 1368596A GB 2963373 A GB2963373 A GB 2963373A GB 2963373 A GB2963373 A GB 2963373A GB 1368596 A GB1368596 A GB 1368596A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- malic acid
- malic
- carbon atoms
- water
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1368596 Preparation of malic acid CHEMIE LINZ AG 21 June 1973 [25 July 1972] 29633/73 Heading C2C A process for the preparation of pure malic acid, suitable for consumption in food and drink, from an aqueous solution obtained by the addition of water to maleic acid and/or fumaric acid under pressure and at an elevated temperature, comprises treating the crude malic acid solution obtained after removing the fumaric acid which has crystallized out, in a liquid-liquid extraction, with an organic solvent which is immiscible with the malic acid solution and possesses good solvent power for maleic acid and fumaric acid, but in which the malic acid is so much less soluble that the distribution coefficient Dc = C water/C solvent of malic acid bears a ratio of at least 4 : 1 to that of maleic acid, and subsequently isolating the malic acid from the purified solution. Particularly suitable solvents are ketones containing 5 to 10 carbon atoms, ethers containing 4, 5 or 6 carbon atoms and esters of acetic acid with aliphatic monoalcphols containing up to 6 carbon atoms. Preferably the extraction is carried out at room temperature. In order to avoid any heavy metals being present in the malic acid it is preferable that malic acid has been obtained by addition of water to maleio acid and/or fumaric acid in an autoclave lined with a layer of polymeric fluorohydrocarbons, e.g. polytetrafluoroethylene.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT636772A AT319197B (en) | 1972-07-25 | 1972-07-25 | Process for the production of malic acid |
| FR7323621A FR2193810A1 (en) | 1972-07-25 | 1973-06-28 | Malic acid recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1368596A true GB1368596A (en) | 1974-10-02 |
Family
ID=25603030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2963373A Expired GB1368596A (en) | 1972-07-25 | 1973-06-21 | Process for the preparation of malic acid |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS4955619A (en) |
| AT (1) | AT319197B (en) |
| BE (1) | BE806668A (en) |
| CH (1) | CH581087A5 (en) |
| GB (1) | GB1368596A (en) |
| NL (1) | NL7309260A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112970837A (en) * | 2021-03-02 | 2021-06-18 | 北京市农林科学院 | Fresh-cut Chinese yam yellowing inhibitor and application thereof |
| CN114423730A (en) * | 2019-10-04 | 2022-04-29 | 提鲁马莱化学有限责任公司 | Production of malic acid using tubular reactor and stirred tank reactor |
-
1972
- 1972-07-25 AT AT636772A patent/AT319197B/en not_active IP Right Cessation
-
1973
- 1973-05-29 CH CH772873A patent/CH581087A5/xx not_active IP Right Cessation
- 1973-06-21 GB GB2963373A patent/GB1368596A/en not_active Expired
- 1973-07-03 NL NL7309260A patent/NL7309260A/xx unknown
- 1973-07-25 JP JP8322073A patent/JPS4955619A/ja active Pending
- 1973-10-29 BE BE137193A patent/BE806668A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114423730A (en) * | 2019-10-04 | 2022-04-29 | 提鲁马莱化学有限责任公司 | Production of malic acid using tubular reactor and stirred tank reactor |
| CN114423730B (en) * | 2019-10-04 | 2023-11-03 | 提鲁马莱化学有限责任公司 | Production of malic acid using tubular and stirred tank reactors |
| CN112970837A (en) * | 2021-03-02 | 2021-06-18 | 北京市农林科学院 | Fresh-cut Chinese yam yellowing inhibitor and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| BE806668A (en) | 1974-04-29 |
| CH581087A5 (en) | 1976-10-29 |
| AT319197B (en) | 1974-12-10 |
| NL7309260A (en) | 1974-01-29 |
| JPS4955619A (en) | 1974-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |