Sinusoid envelope voltammetry - A novel voltammetry waveform for electronic tongue

Tian Shiyi; Xiao Xiao; Deng Shaoping

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Sinusoid envelope voltammetry - A novel voltammetry waveform for electronic tongue

Tian Shiyi 1,Xiao Xiao 2,Deng Shaoping 2 * #

1.School of Food Science and Biotechnology (SFSB), Zhejiang Gongshang University, HangZhou 310035

2.School of Food Science and Biotechnology (SFSB), Zhejiang Gongshang University

*Correspondence author

#Submitted by

Subject:

Funding: Specialized Research Fund for the Doctoral Program of Higher Education（No.No. 200803530002）

Opened online:16 February 2012

Accepted by: none

Citation: Tian Shiyi,Xiao Xiao,Deng Shaoping.Sinusoid envelope voltammetry - A novel voltammetry waveform for electronic tongue[OL]. [16 February 2012] http://en.paper.edu.cn/en_releasepaper/content/4463707

A novel voltammetry for voltammetric electronic tongue so called sinusoid envelope voltammetry was introduced in this paper. Fourier transformation was used to transform the data of its response signal from the time domain to the frequency domain. Four taste substances, i.e. acesulfame potassium, monosodium glutamate, potassium chloride and tartaric acid, exhibited abundant frequency characters in the power spectrum of Fourier transformation respectively, which indicated that the power spectrum from sinusoid envelope voltammetry could be used as fingerprints of samples for classification. Also, principal component analysis with discrimination index and multi-frequency large amplitude pulse voltammetry as a reference technique was used to evaluate the separation ability of sinusoid envelope voltammetry. The score plot of sinusoidal envelope voltammetry from four taste substances and five brands of Jiafan rice wine showed a better discrimination ability than multi-frequency large amplitude pulse voltammetry. Sinusoid envelope voltammetry would be a promising technology for voltammetric electronic tongue.

Keywords:Electronic tongue; Sinusoid envelope voltammetry; Waveform; Voltammetry

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