Microbial contamination can easily affect processed tomato, thus determining both organoleptic adulterations and potential health risks for customers. Innovative techniques for a rapid and reliable diagnose of spoilage, such as electronic nose technology, are highly requested in order to guarantee food safety and to improve production. In this work canned peeled tomatoes were artificially spoiled with different kinds of microbial flora and then were analyzed by means of an electronic nose based on thin film metal oxide gas sensors. Preliminary analyses by dynamic-headspace gas chromatographic–mass spectrometry showed significant differences in the semi-quantitative volatile compounds profile of spoiled tomato samples just after few hours from contamination, thus suggesting to employ the electronic nose for an early diagnose of microbial presence. The electronic nose was indeed able to reveal contamination, even at early stages depending on the type of contaminant (e.g. for Saccharomyces cerevisiae and Escherichia coli), and to recognize spoiled tomato samples with good classification performances.

Early detection of microbial contamination in processed tomatoes by electronic nose / I., Concina; M., Falasconi; E., Gobbi; Bianchi, Federica; Musci, Marilena; Mattarozzi, Monica; M., Pardo; Mangia, Alessandro; Careri, Maria; Sberveglieri, Giorgio. - In: FOOD CONTROL. - ISSN 0956-7135. - 20:(2009), pp. 873-880. [10.1016/j.foodcont.2008.11.006]

Early detection of microbial contamination in processed tomatoes by electronic nose

BIANCHI, Federica;MUSCI, Marilena;MATTAROZZI, Monica;MANGIA, Alessandro;CARERI, Maria;SBERVEGLIERI, Giorgio
2009-01-01

Abstract

Microbial contamination can easily affect processed tomato, thus determining both organoleptic adulterations and potential health risks for customers. Innovative techniques for a rapid and reliable diagnose of spoilage, such as electronic nose technology, are highly requested in order to guarantee food safety and to improve production. In this work canned peeled tomatoes were artificially spoiled with different kinds of microbial flora and then were analyzed by means of an electronic nose based on thin film metal oxide gas sensors. Preliminary analyses by dynamic-headspace gas chromatographic–mass spectrometry showed significant differences in the semi-quantitative volatile compounds profile of spoiled tomato samples just after few hours from contamination, thus suggesting to employ the electronic nose for an early diagnose of microbial presence. The electronic nose was indeed able to reveal contamination, even at early stages depending on the type of contaminant (e.g. for Saccharomyces cerevisiae and Escherichia coli), and to recognize spoiled tomato samples with good classification performances.
2009
Early detection of microbial contamination in processed tomatoes by electronic nose / I., Concina; M., Falasconi; E., Gobbi; Bianchi, Federica; Musci, Marilena; Mattarozzi, Monica; M., Pardo; Mangia, Alessandro; Careri, Maria; Sberveglieri, Giorgio. - In: FOOD CONTROL. - ISSN 0956-7135. - 20:(2009), pp. 873-880. [10.1016/j.foodcont.2008.11.006]
File in questo prodotto:
File Dimensione Formato  
article on line.pdf

non disponibili

Tipologia: Documento in Post-print
Licenza: Creative commons
Dimensione 592.86 kB
Formato Adobe PDF
592.86 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2293912
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 132
  • ???jsp.display-item.citation.isi??? 111
social impact