Czech J. Food Sci., 2012, 30(3):236-240 | DOI: 10.17221/165/2011-CJFS

Discriminatory power assessment of the sensor array of an electronic nose system for the detection of non alcoholic beer aging

Mahdi GHASEMI-VARNAMKHASTI1, 2, Seyed Saeid MOHTASEBI1, Maryam SIADAT2, Seyed Hadi RAZAVI3, Hojat AHMADI1, Amadou DICKO4
1 Agricultural Machinery Engineering Department and 3Food Science and Engineering Department, Faculty of Agricultural Engineering &
Technology, University of Tehran, Karaj, Iran
2 Laboratoire d'Automatique et de Sciences Comportementales (LASC), Université Paul Verlaine-Metz, Metz, France
4 Laboratoire de Chimie et de Méthodologies pour l'Environnement (LCME), Université Paul Verlaine-Metz, Metz, France

Many chemical changes in beer aroma occur during storage (aging), and monitoring these changes could give guidelines to the brewers how to manage and control the brewing process to obtain the final product with a high stability in flavour after packaging. In this regard, our laboratory aimed at a research into the application of an electronic nose in order to get the fingerprint of the change of non alcoholic beer aroma during aging. Th discriminatory power of the sensor array of this system was evaluated. Principal Component Analysis (PCA) and Soft Independent Modelling of Class Analogy (SIMCA) techniques were used for this purpose. The results obtained can direct us to performing other parts of our project. Considering the discriminatory power of the sensor array used, we can develop the application of a specific electronic nose system by picking up the most effective sensors or ignoring the redundant sensors.

Keywords: electronic nose; chemical change; storage; beer; aroma; food; PCA

Published: June 30, 2012  Show citation

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GHASEMI-VARNAMKHASTI M, MOHTASEBI SS, SIADAT M, RAZAVI SH, AHMADI H, DICKO A. Discriminatory power assessment of the sensor array of an electronic nose system for the detection of non alcoholic beer aging. Czech J. Food Sci. 2012;30(3):236-240. doi: 10.17221/165/2011-CJFS.
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