Impedance measurements to assess microbial contamination of ready-to-use vegetables |
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| Authors: | Carla Orsi Sandra Torriani Bruno Battistotti M. Vescovo |
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| Affiliation: | (1) Istituto di Microbiologia, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, I-29100 Piacenza, Italy, IT;(2) Istituto Policattedra, Facoltà di Scienze MM.FF.NN., Università di Verona, Strada Le Grazie, Cà Vignal 1, I-37134 Verona, Italy, IT |
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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. Received: 25 November 1996 / Revised version: 23 January 1997 |
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| Keywords: | Ready-to-use vegetables Impedometry Microbial contamination |
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