Control of water microbial content is of great importance in environmental screening processes. Determination of the bacterial concentration is usually carried out by the standard plate count technique that is reliable and accurate but also require long time response (24 – 72 hours) and the need to be performed in microbiology laboratories by qualified personnel. The present work shows an embedded portable biosensor system for the determination of bacterial concentration in liquid and semiliquid samples that provides fast time response and easy to use procedures. Such system calculates the bacterial concentration by analyzing the electrical characteristic of the sample under test. The presented biosensor has been successfully used to determine the coliforms concentration in water samples of different origin. Results show the possibility to detect high bacterial concentrations (> 105 cfu/ml) in relatively short time (3 – 4 hours) and a good correlation with data obtained by standard plate count technique

Detection of coliforms concentration in water samples by portable impedance-based biosensor system.

GROSSI, MARCO;POMPEI, ANNA;LANZONI, MASSIMO;MATTEUZZI, DIEGO;RICCO', BRUNO
2010

Abstract

Control of water microbial content is of great importance in environmental screening processes. Determination of the bacterial concentration is usually carried out by the standard plate count technique that is reliable and accurate but also require long time response (24 – 72 hours) and the need to be performed in microbiology laboratories by qualified personnel. The present work shows an embedded portable biosensor system for the determination of bacterial concentration in liquid and semiliquid samples that provides fast time response and easy to use procedures. Such system calculates the bacterial concentration by analyzing the electrical characteristic of the sample under test. The presented biosensor has been successfully used to determine the coliforms concentration in water samples of different origin. Results show the possibility to detect high bacterial concentrations (> 105 cfu/ml) in relatively short time (3 – 4 hours) and a good correlation with data obtained by standard plate count technique
Ambiente Economia
1062
1067
M. Grossi; A. Pompei; M. Lanzoni; R. Lazzarini; D. Matteuzzi; B. Riccò
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/93311
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