Detection of food and skin pathogen microbiota by means of an electronic nose based on metal oxide chemiresistors

Year: 2017

Authors: Carmona E.N., Sberveglieri V., Ponzoni A., Galstyan V., Zappa D., Pulvirenti A., Comini E.

Autors Affiliation: CNR INO Sensor Lab, Via Branze 45, I-25123 Brescia, Italy; Univ Brescia, Dept Informat Engn, Via Valotti 9, I-25133 Brescia, Italy; Univ Modena & Reggio Emilia, Dept Live Sci, I-42124 Reggio Emilia, Italy.

Abstract: This work illustrates the potentiality of a mixed array merging the Nanowire and thin film metal oxide technologies to develop an electronic nose as a tool to monitor the human skin and food pathogen micro biota. Nanowire and thin film sensors have been fabricated, characterized and then integrated together to develop a hybrid device that can enhance the sensing performance. Different blends of microorganisms grown in artificial sweat have been tested. Classical techniques, like GC-MS (Gas Chromatography-Mass Spectrometry) with SPME (Solid Phase Micro Extraction) have been employed in parallel, in order to have a multidisciplinary approach and a consistent data set. The obtained results show the potentiality of the proposed electronic nose to discriminate between the different blends of microorganisms and to follow up microbiota growth inside the blends. (C) 2016 Elsevier B.V. All rights reserved.

Journal/Review: SENSORS AND ACTUATORS B-CHEMICAL

Volume: 238      Pages from: 1224  to: 1230

More Information: The authors acknowledge the financial support from the European Commission the FP7 project Sniffer for concealed people discovery (SNOOPY) (grant agreement no. 313110). Authors are pleased to thank Manohar P. Bhandari for the English revision of the manuscript.
KeyWords: Skin microbiota; Nanowire; VOC; Cross contamination; GC-MS-SPME; Artificial sweat
DOI: 10.1016/j.snb.2016.09.086

Citations: 33
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