The measurement principles, working parameters and configurations of voltammetric electronic tongues and its applications for foodstuff analysis

摘要

Voltammetric electronic tongue (VE-tongue) is a promising technology for advanced sensing and measurement applications. The review examines the measurement principles, working parameters and configurations of different types of voltammetric electronic tongues (VE-tongue): the VE-tongue based on bare electrodes, modified electrodes and biosensors. The working parameters of these VE-tongues (electrode cleaning method, pulsed voltammetry and pre-processing of responses data) are described, and the development of VE-tongue based on miniaturized sensors arrays and automatic flow techniques is also presented. The applications of foodstuff analysis commented include recognition of basic tastes substances, tracing origins samples recognition, process monitoring, and quality investigation. Finally, the unsolved problems and significant efforts of VE-tongues are depicted. (C) 2017 Elsevier Ltd. All rights reserved.