A taste sensor based on surface imprinted TiO2 membrane

Wenxiang Xiao; Zhencheng Chen; Xingguo Jiang; Hongtian Zhao; Fugang Chu; Hongbin Hou

doi:10.1117/12.922998

13 March 2012 A taste sensor based on surface imprinted TiO₂ membrane

Wenxiang Xiao, Zhencheng Chen, Xingguo Jiang, Hongtian Zhao, Fugang Chu, Hongbin Hou

Proceedings Volume 8329, Tenth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2011); 83290W (2012) https://doi.org/10.1117/12.922998
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China

Abstract

Surface imprinted TiO2 membranes had been prepared and used as sensing membranes for basic tastes discrimination. Four basic taste molecules (citric acid, D-glucose, quinine hydrochloride and sodium L-glutamate for sour, sweet, bitter and umami respectively) were used as templates for imprinting. The sensor was fabricated in light-addressable potentiometric principle. Experimental results show that membranes imprinted by citric acid and quinine hydrochloride exhibit similar response behaviors towards four taste substances, that is citric acid > quinine hydrochloride > sodium L-glutamate > D-glucose. Membrane imprinted by sodium L-glutamate is sensitive towards quinine hydrochloride. Except for D-glucose imprinting membrane, other three membranes are inert to glucose. Combined with principal component analysis, four basic tastes can be well distinguished.

Citation Download Citation

Wenxiang Xiao, Zhencheng Chen, Xingguo Jiang, Hongtian Zhao, Fugang Chu, and Hongbin Hou "A taste sensor based on surface imprinted TiO₂ membrane", Proc. SPIE 8329, Tenth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2011), 83290W (13 March 2012); https://doi.org/10.1117/12.922998

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