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Production of ℓ-malic acid by Paecilomyces varioti

  • S. M. Campbell*
  • , J. R. Todd
  • , J. G. Anderson
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Preliminary data for production of ℓ-malic acid from calcium acetate by Paecilomyces varioti is presented. Shake flask cultures with free cells and with cells immobilised in calcium alginate beads gave comparable results, acid concentrations of approximately 8 g/l being produced after 5 days from a medium containing 4% w/w of calcium acetate. A packed bed reactor, operated as an extended batch with product recycle, produced maximum acid concentrations of 32.6 g/l, equivalent to 73% of the maximum theoretical yield, after 3 days. Evidence obtained indicated that spores were more active than mycelia in the production of malic acid.

Original languageEnglish
Pages (from-to)393-398
Number of pages6
JournalBiotechnology Letters
Volume9
Issue number6
DOIs
Publication statusPublished - Jun 1987

Keywords

  • ℓ-malic acid
  • calcium acetate
  • Paecilomyces varioti

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