中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

26 records (took 0.03 seconds)

    21.
    发明专利
    未知

    公开(公告)号：AT216987T

    公开(公告)日：2002-05-15

    申请号：AT97901153

    申请日：1997-01-21

    Applicant: AMYLUM EUROPE NV ,  STALEY MFG CO A E

    Inventor： CAMI PIERRE ,  EYAL AHARON

    IPC: C07C227/28 ,  C07C227/40 ,  C07C229/24

    Abstract: PCT No. PCT/GB97/00177 Sec. 371 Date Oct. 7, 1998 Sec. 102(e) Date Oct. 7, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/27170 PCT Pub. Date Jul. 31, 1997An indirect acidulation process for producing glutamic acid from an aqueous feed containing a glutamate resulting from fermentation includes: a) contacting an aqueous feed stream at an elevated temperature with a weak acid cation exchanger (WACE) which is at least partially in its acid form, whereby a part of the cations in the solution is taken up by the cation exchanger and protons are introduced into the solution; b) contacting a second aqueous feed containing glutamate and cations at an elevated temperature with a strong acid cation exchanger (SACE) that is obtained from a subsequent step and carries cationic glutamate, whereby the cationic glutamate is transferred into the solution and most of the cations in the second aqueous feed are taken up by the SACE; c) crystallizing glutamic acid from the effluent of step (b); d) contacting the mother liquor of step (c) with the SACE which is at least partially in its acid form whereby cationic glutamate is bound; e) utilizing the SACE obtained in step (d) in step (b); f) regenerating the SACE from step (b) to its at least partially acid form by a solution of a strong acid and utilizing the SACE in its at least partially acid form in step (d) while forming an effluent containing an acidic solution of salts, comprising cations bound to the cation exchanger in step (b) and the anions of the strong acid; g) regenerating the WACE from step (a) to its at least partially acid form by the effluent from step (f) and utilizing the WACE in its at least partially acid form in step (a) while forming an effluent containing a solution of salts, comprising cations bound to the cation exchangers in steps (a) and (b) and the anions of the strong acid; and h) directing the salt solution obtained as the effluent of step (g) for commercial use.

    Process for the production of aspartic acid condensate
    26.
    发明专利
    Process for the production of aspartic acid condensate 未知

    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.

Patent Agency Ranking