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Related Experiment Videos

Process design for enzymatic adipyl-7-ADCA hydrolysis.

Catharina Gerarda Petronella Henrica Schroën1, Vincent Adriaan Nierstrasz, Rouke Bosma

  • 1Department of Agrotechnology and Food Sciences, Food and Bioprocess Engineering Group, Wageningen University, P.O. Box 8129, 6700 EV Wageningen, The Netherlands. karin.schroen@algemeen.pk.wau.nl

Biotechnology Progress
|August 3, 2002
PubMed
Summary

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This study presents a novel enzymatic process for producing 7-aminodeacetoxycephalosporanic acid (7-ADCA) using adipyl-7-ADCA. The efficient process minimizes substrate and product loss through integrated separation and recycling steps.

Area of Science:

  • Biochemical Engineering
  • Enzymatic Synthesis
  • Antibiotic Precursor Production

Background:

  • 7-aminodeacetoxycephalosporanic acid (7-ADCA) is a key substrate for antibiotic synthesis.
  • Adipyl-7-ADCA offers a new source for 7-ADCA production.
  • Existing production methods require optimization for efficiency and yield.

Purpose of the Study:

  • To develop and present a novel enzymatic process for 7-ADCA production from adipyl-7-ADCA.
  • To optimize downstream processing for high yields and minimal losses.
  • To investigate continuous and batch reactor configurations for 7-ADCA synthesis.

Main Methods:

  • Enzymatic hydrolysis of adipyl-7-ADCA in batch or continuous reactors.
  • Crystallization of 7-ADCA at low pH.

Related Experiment Videos

  • Nanofiltration for separation of adipic acid, adipyl-7-ADCA, and 7-ADCA.
  • Recycling of components to minimize process losses.

    • Main Results:

    • High yields of 7-ADCA were achieved in both batch and continuous reactor operations.
    • Chemical degradation of 7-ADCA was minimized through optimized reaction conditions and reactor design.
    • Effective separation of adipic acid and 7-ADCA was accomplished via nanofiltration.
    • Recycling of adipic acid and intermediates significantly reduced substrate and product loss.

    Conclusions:

    • The novel enzymatic process provides an efficient method for 7-ADCA production.
    • Integrated downstream processing with recycling enhances overall process economics.
    • The developed method is suitable for both batch and continuous manufacturing of 7-ADCA.