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Impedance measurements to assess microbial contamination of ready-to-use vegetables

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Abstract

 An impedometric method for estimating the microbial load of ready-to-use vegetables, either inoculated or not inoculated with antimicrobial-producing lactic acid bacteria, was investigated. The correlation (R 2) between total mesophilic bacteria (log cfu/g) and time to detection was 0.889. A discrepancy was observed for the impedometric measurement of low coliforms counts, particularly in samples inoculated with lactic acid bacteria and stored at 8°C for 6 days. Time to detection for the two groups of microorganisms was less than 11 h.

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Authors and Affiliations

  1. Istituto di Microbiologia, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, I-29100 Piacenza, Italy, , , , , , IT

    Carla Orsi, Bruno Battistotti & M. Vescovo

  2. Istituto Policattedra, Facoltà di Scienze MM.FF.NN., Università di Verona, Strada Le Grazie, Cà Vignal 1, I-37134 Verona, Italy, , , , , , IT

    Sandra Torriani

Authors
  1. Carla Orsi
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  2. Sandra Torriani
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  3. Bruno Battistotti
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  4. M. Vescovo
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Received: 25 November 1996 / Revised version: 23 January 1997

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Orsi, C., Torriani, S., Battistotti, B. et al. Impedance measurements to assess microbial contamination of ready-to-use vegetables. Z Lebensm Unters Forsch 205, 248–250 (1997). https://doi.org/10.1007/s002170050160

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  • DOI: https://doi.org/10.1007/s002170050160

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