Study and development of intelligent devices (electronic noses and tongues) aiming to the discrimination of contamination in foods

• Grant number: 11/23355-3
• Support Opportunities: Scholarships in Brazil - Doctorate
• Effective date (Start): March 01, 2012
• Effective date (End): February 29, 2016
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Thiago Regis Longo Cesar da Paixão
• Grantee: Lígia Bueno Bedatty
• Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Microbiological control is an indispensable procedure for many industry sectors, especially food sectors, and for different medicine areas. Micro-organisms may be linked to food contamination and foodborne diseases. Thus, the correct identification and differentiation of these contaminating organisms are necessary in many practical applications. Hence, the present research project aims to develop and study the operation of new intelligent devices (electronic noses and tongues) for the discrimination process of micro-organisms using the volatile substances released by the species. The devices are fabricated using electrodes, modified or not, and always with the idea to extract the highest number of information related to micro-organisms studied. In a second step, we intend to develop paper colorimetric electronic noses, capable to extract visual information, colorimetric information, to discriminate the species of micro-organisms. The devices fabrication will be used reduced cost techniques when compared to lithographic techniques currently used in the manufacture of some intelligent devices. Finally, these chemical sensors developed will be applied in the analysis of food samples contaminated with pathogenic micro-organisms, specifically bacteria, in order to detect and discriminate between species presence and degree of pathogenicity in a shorter time with reduced costs and without the need for skilled labor and well-equipped laboratories.

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BUENO, LIGIA; COTTELL, ALISON; REDDY, SUBRAYAL M.; PAIXAO, THIAGO R. L. C.. Coupling dye-integrated polymeric membranes with smartphone detection to classify bacteria. RSC ADVANCES, v. 5, n. 119, p. 97962-97965, 2015. (14/50792-3, 11/23355-3)

BUENO, LIGIA; MELONI, GABRIEL N.; REDDY, SUBRAYAL M.; PAIXAO, THIAGO R. L. C.. Use of plastic-based analytical device, smartphone and chemometric tools to discriminate amines. RSC ADVANCES, v. 5, n. 26, p. 20148-20154, 2015. (12/12106-5, 11/23355-3)

BUENO, LIGIA; EL-SHARIF, HAZIM F.; SALLES, MAIARA O.; BOEHM, RYAN D.; NARAYAN, ROGER J.; PAIXAO, THIAGO R. L. C.; REDDY, SUBRAYAL M.. MIP-based electrochemical protein profiling. SENSORS AND ACTUATORS B-CHEMICAL, v. 204, p. 88-95, DEC 1 2014. (12/12106-5, 11/23355-3)

BUENO, LIGIA; DE ARAUJO, WILLIAM R.; SALLES, MAIARA O.; KUSSUDA, MARCOS Y.; PAIXAO, THIAGO R. L. C.. Voltammetric Electronic Tongue for Discrimination of Milk Adulterated with Urea, Formaldehyde and Melamine. CHEMOSENSORS, v. 2, n. 4, p. 16-pg., 2014-12-01. (12/12106-5, 11/23355-3, 11/11115-8, 11/19903-5)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BEDATTY, Lígia Bueno. Study and development of smart devices (electronic nose and tongues) aiming at discrimination of contamination in food samples. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Conjunto das Químicas (IQ e FCF) (CQ/DBDCQ) São Paulo.