Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 116, Issue 1-2, Pages 49-54Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2005.11.071
Keywords
surface acoustic wave sensors; solid phase microextraction; fuzzy filters; virgin olive oil
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An electronic nose based on a solid phase microextration (SPME) unit coupled with a surface acoustic wave (SAW) sensor array has been optimized towards the analysis of virgin olive oil aroma. The parameters of the system, the SPME fibre coating and the kind of carrier gas, have been adjusted to act the optimum response with the minimum relative standard deviation. The selectivity and sensitivity of the sensors were studied by means of a fuzz), filter based on the membership grade functions of the sensor responses for the non-lampante and lampante classes. A multilayer perceptron (MLP) was designed to classify non-lampante and lampante virgin olive oils. Only one sample out of 26 was erroneously classified in the training set. whereas a classification rate of 100% was obtained in a external validation set of 16 samples. (c) 2006 Elsevier B.V. All rights reserved.
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