FI902630A - Method for the preparation of lactulose - Google Patents

Method for the preparation of lactulose Download PDF

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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
Application number
FI902630A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI92490C (en
FI902630A0 (en
FI92490B (en
Inventor
Michael Dorscheid
Rudolf Krumbholz
Original Assignee
Duphar Int Res
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Duphar Int Res filed Critical Duphar Int Res
Priority to FI902630A priority Critical patent/FI92490C/en
Publication of FI902630A0 publication Critical patent/FI902630A0/en
Publication of FI902630A publication Critical patent/FI902630A/en
Application granted granted Critical
Publication of FI92490B publication Critical patent/FI92490B/en
Publication of FI92490C publication Critical patent/FI92490C/en

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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.
FI902630A 1990-05-25 1990-05-25 Method for the preparation of lactulose FI92490C (en)

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)

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FI (1) FI92490C (en)

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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Owner name: DUPHAR INTERNATIONAL RESEARCH B.V