公开(公告)号：IL119986A

公开(公告)日：2000-10-31

申请号：IL11998697

申请日：1997-01-09

Applicant: AMYLUM NV ,  STALEY MFG CO A E

Inventor： EYAL AHARON M ,  VITNER ASHER ,  CAMI PIERRE ,  JANSEN ROBERT ,  JARRY BRUNO ,  LECOMTE D ,  SCOTT JEAN ,  CHATTAWAY THOMAS ,  LANCKER F VAN

IPC: C07C227/42 ,  C07C229/24 ,  C08G69/10 ,  C08G73/10 ,  C12P7/46 ,  C12P13/20 ,  C07C227/00

公开(公告)号：IL118892A

公开(公告)日：2000-08-13

申请号：IL11889296

申请日：1996-07-18

Applicant: AMYLUM NV ,  STALEY MFG CO A E

Inventor： EYAL AHARON M ,  CAMI PIERRE ,  PILON ROBERT

IPC: C07C227/40 ,  C07C227/42 ,  C07C229/24 ,  C08G73/10 ,  C12P13/20

公开(公告)号：EP0941357A4

公开(公告)日：2004-11-17

申请号：EP97947359

申请日：1997-11-04

Applicant: STALEY MFG CO A E

Inventor： EYAL AHARON M ,  LEHNHARDT WILLIAM F

IPC: C12P7/40 ,  C12P7/56 ,  C12P1/04 ,  C12P7/46 ,  C12P7/62

CPC classification number: C12P7/56 ,  C12P7/40 ,  Y10S435/803

Abstract: A process is described for producing organic acids such as lactic acid. The process includes the steps of producing lactic acid by fermentation, resulting in an aqueous fermentation broth containing lactic acid, and adding a calcium base, such as calcium carbonate, to the fermentation broth, thereby producing calcium lactate in the broth. Biomass is removed from the broth, thereby leaving an aqueous solution or dispersion of calcium lactate. The calcium lactate is reacted with a source of ammonium ions, such as ammonium carbonate, or a mixture of ammonia and carbon dioxide, thereby producing an ammonium lactate. Contaminating cations can be removed by ion exchange. The free lactic acid or a derivative thereof can be separated from the ammonium ions, preferably by salt-splitting electrodialysis.

公开(公告)号：CA2270522A1

公开(公告)日：1998-05-28

申请号：CA2270522

申请日：1997-11-04

Applicant: STALEY MFG CO A E

Inventor： LEHNHARDT WILLIAM F ,  EYAL AHARON M

IPC: C12P7/40 ,  C12P7/56 ,  C12P1/04 ,  C12P7/46 ,  C12P7/62

Abstract: A process is described for producing organic acids such as lactic acid. The process includes the steps of producing lactic acid by fermentation, resulting in an aqueous fermentation broth containing lactic acid, and adding a calcium base, such as calcium carbonate, to the fermentation broth, thereby producing calcium lactate in the broth. Biomass is removed from the broth, thereby leaving an aqueous solution or dispersion of calcium lactate. The calcium lactate is reacted with a source of ammonium ions, such as ammonium carbonate, or a mixture of ammonia and carbon dioxide, thereby producing an ammonium lactate. Contaminating cations can be removed by ion exchange. The free lactic acid or a derivative thereof can be separated from the ammonium ions, preferably by salt-splitting electrodialysis.

公开(公告)号：AU5245998A

公开(公告)日：1998-06-10

申请号：AU5245998

申请日：1997-11-04

Applicant: STALEY MFG CO A E

Inventor： EYAL AHARON M ,  LEHNHARDT WILLIAM F

IPC: C12P7/40 ,  C12P7/56 ,  C12P1/04 ,  C12P7/46 ,  C12P7/62

公开(公告)号：IL119414A

公开(公告)日：2000-08-31

申请号：IL11941496

申请日：1996-10-13

Applicant: AMYLUM NV

Inventor： EYAL AHARON M ,  JANSEN ROBERT ,  VITNER ASHER ,  CAMI PIERRE ,  MAILLY EMMANUEL ,  CHATTAWAY THOMAS ,  JARRY BRUNO ,  MORE JOELLE

IPC: C08G73/10 ,  C12P13/20 ,  C07C227/00 ,  C07C229/00

Abstract: The invention provides a process for the production of aspartic acid poly-condensate from a carbohydrate comprising the steps of: fermenting a carbohydrate-containing medium by means of a fumaric acid-producing microorganism, whereby a fumarate-containing fermentation liquor is formed; forming a purified ammonium fumarate solution from the fumarate-containing fermentation liquor; enzymatically converting the purified ammonium fumarate into purified ammonium aspartate; heating an aqueous solution of an aspartate salt derived from the purified ammonium aspartate whereby water is removed, an aspartic acid condensate is formed and a second product is formed, which second product is basic and contains the cation of the aspartate salt; and removing and using the basic second product as a reagent in another step of the process.