[18p-E202-1~18] 12.7 Biomedical Engineering and Biochips

[18p-E202-10] Electrochemical biosensor for extraction and detection of human sweat components

〇Kuniaki Nagamine^1,2, Yusuke Ichimura¹, Ryota Izawa¹, Ayako Nomura², Hiroyuki Matsui^1,2, Shizuo Tokito^1,2 (1.Grad. Sch. Org. Mat. Sci., Yamagata Univ., 2.ROEL, Yamagata Univ.)

Keywords:Biosensor, Sweat analysis, non-invasive diagnosis

This study is the first report demonstrating proof-of-concept for a hydrogel-based touch sensor pad used for the non-invasive extraction and detection of sweat components. The sensor device was composed of an electrochemical L-lactate biosensor covered with an agarose gel in a phosphate buffer saline. When human skin contacts the agarose gel, L-lactate in sweat was continuously extracted into the gel, followed by in-situ potentiometric detection without controlled conditions. This novel type of sweat sensor is expected to enable the simple, non-invasive daily periodic monitoring of sweat biomarkers for advanced personal healthcare methods in the future.