Monitoring of complex industrial bioprocesses for metabolite concentrations using modern spectroscopies and machine learning: Application to gibberellic acid production

  • David Iain Broadhurst
  • , Royston Goodacre
  • , Naheed Nazly Kaderbhai
  • , David A. Small
  • , Michael Kenneth Winson
  • , Douglas B. Kell
  • , Aoife C. McGovern
  • , Janet Taylor
  • , Jeremy John Rowland

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)

Abstract

Two rapid vibrational spectroscopic approaches (diffuse reflectance-absorbance Fourier transform infrared [FT-IR] and dispersive Raman spectroscopy), and one mass spectrometric method based on in vacuo Curie-point pyrolysis (PyMS), were investigated in this study. A diverse range of unprocessed, industrial fed-batch fermentation broths containing the fungus Gibberella fujikuroi producing the natural product gibberellic acid, were analyzed directly without a priori chromatographic separation. Partial least squares regression (PLSR) and artificial neural networks (ANNs) were applied to all of the information-rich spectra obtained by each of the methods to obtain quantitative information on the gibberellic acid titer. These estimates were of good precision, and the typical root-mean-square error for predictions of concentrations in an independent test set was
Original languageEnglish
Pages (from-to)527-538
Number of pages12
JournalBiotechnology and Bioengineering
Volume78
Issue number5
DOIs
Publication statusPublished - 2002

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