FI902630A - Method for the preparation of lactulose - Google Patents
Method for the preparation of lactulose Download PDFInfo
- Publication number
- FI902630A FI902630A FI902630A FI902630A FI902630A FI 902630 A FI902630 A FI 902630A FI 902630 A FI902630 A FI 902630A FI 902630 A FI902630 A FI 902630A FI 902630 A FI902630 A FI 902630A
- Authority
- FI
- Finland
- Prior art keywords
- solution
- borax
- ion exchanger
- sodium ions
- lactulose
- Prior art date
Links
Abstract
For preparing lactulose, an alkaline aqueous solution of lactose and borax is first of all prepared and this solution is heated to a temperature which exceeds 80 degree C. The lactulose is separated from the resulting conversion product. No alkalizing substance is added to the solution apart from borax. The conversion is carried out at a pH of 8.3. In order to keep the sodium ions in the production cycle, the borax can be prepared in an aqueous solution of boric acid, and additionally at the same time as the lactose, and the sodium ions can be transferred from the conversion product solution to the solution of boric acid by electrodialysis. Alternatively, the sodium ions can also as far as possible be removed from the conversion product solution using a weakly acid ion exchanger and only after that using a more strongly acid ion exchanger. The weakly acid ion exchanger is regenerated with boric acid such that borax is formed once again.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI902630A FI92490C (en) | 1990-05-25 | 1990-05-25 | Method for the preparation of lactulose |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI902630 | 1990-05-25 | ||
FI902630A FI92490C (en) | 1990-05-25 | 1990-05-25 | Method for the preparation of lactulose |
Publications (4)
Publication Number | Publication Date |
---|---|
FI902630A0 FI902630A0 (en) | 1990-05-25 |
FI902630A true FI902630A (en) | 1991-11-26 |
FI92490B FI92490B (en) | 1994-08-15 |
FI92490C FI92490C (en) | 1994-11-25 |
Family
ID=8530522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI902630A FI92490C (en) | 1990-05-25 | 1990-05-25 | Method for the preparation of lactulose |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI92490C (en) |
-
1990
- 1990-05-25 FI FI902630A patent/FI92490C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI92490C (en) | 1994-11-25 |
FI902630A0 (en) | 1990-05-25 |
FI92490B (en) | 1994-08-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application | ||
MM | Patent lapsed |
Owner name: DUPHAR INTERNATIONAL RESEARCH B.V |