A process for recovery of ascorbic acid

C - Chemistry – Metallurgy – 07 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07D 307/62 (2006.01)

Patent

CA 2271856

The invention provides a process for the recovery of ascorbic acid from a feed containing at least one precursor of ascorbic acid comprising converting said precursor into at least one product, said at least one product being ascorbic acid in an organic extractant composition, said organic extractant composition comprising at least one secondary or tertiary alkyl amine in which the aggregate number of carbon atoms is at least 20, as a primary extractant, and a polar extraction enhancer compound; wherein said extractant composition comprises at least 2 moles of said polar extraction enhancer compound per one mole of primary extractant; and subjecting said ascorbic acid-containing organic extractant composition to a stripping operation with aqueous solution at a temperature of at least 20 ~C higher than the temperature at which said conversion is carried out; whereby there is obtained an aqueous solution of ascorbic acid in which the concentration of ascorbic acid is higher than 5 %.

La présente invention concerne un procédé de récupération d'acide ascorbique à partir d'un produit brut contenant au moins un précurseur de l'acide ascorbique. Ce procédé consiste à convertir le précurseur considéré en un produit, en l'occurrence de l'acide ascorbique dans une composition d'agent d'extraction organique. Cet agent d'extraction organique comporte, d'une part un alkyl amine secondaire ou tertiaire portant au moins 20 atomes de carbone, et qui est l'agent d'extraction proprement dit, et d'autre part un composé polaire favorisant l'extraction. Cette composition d'agent d'extraction organique comporte au moins 2 moles de composé polaire favorisant l'extraction pour une mole d'agent primaire d'extraction. Le procédé consiste ensuite à prendre la composition considérée d'agent d'extraction organique contenant de l'acide ascorbique et à la soumettre à strippage avec une solution aqueuse à une température supérieure d'au moins 20 ·C à la température de conversion. Dans ce cas, la solution aqueuse d'acide ascorbique obtenue correspond à une concentration d'acide ascorbique supérieure à 5 %.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

A process for recovery of ascorbic acid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with A process for recovery of ascorbic acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A process for recovery of ascorbic acid will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1772930

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.