Identification and quantification of foodborne pathogens in different food matrices using FTIR spectroscopy and artificial neural networks

Mathala Juliet Gupta, Joseph M. Irudayaraj, Ze'ev Schmilovitch, Amos Mizrach

Research output: Contribution to journalArticlepeer-review

Abstract

FTIR absorbance spectra of four foodborne pathogens suspended in four common food matrices at three different concentrations were used with artificial neural networks (ANNs) for identification and quantification. The classification accuracy of the ANNs was 93.4% for identification and 95.1% for quantification when validated using a subset of the data set. The accuracy of the ANNs when validated for identification of the pathogens studied at four different concentrations using an independent data set had an accuracy range from 60% to 100% and was strongly influenced by background noise. The pathogens could be identified irrespective of the food matrix in which they were suspended, although the classification accuracy was reduced at lower concentrations. More sophisticated background noise filtration techniques are needed to further improve the predictions.

Original languageEnglish (US)
Pages (from-to)1249-1255
Number of pages7
JournalTransactions of the ASABE
Volume49
Issue number4
DOIs
StatePublished - Jul 2006
Externally publishedYes

Keywords

  • ANNs
  • Differentiation
  • FTIR spectroscopy
  • Food matrices
  • Food pathogens
  • Quantification

ASJC Scopus subject areas

  • Forestry
  • Food Science
  • Biomedical Engineering
  • Agronomy and Crop Science
  • Soil Science

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