On-line Magazine 'Sensors & Transducers' (S&T e-Digest)

    (ISSN 1726- 5479)

Vol. 41, Issue 3, March 2004, pp. 191-196

Studies of Two Disposable Electrochemical Biosensors

Tu Yifeng¹*, Zhu Yueqing²

¹College of Chemistry and Chemical Engineering, Suzhou University, Suzhou, 215006, P.R.China

²Changzhou Poly-technique School of Textile & Costume, Changzhou, 213004, P.R.China

^*Corresponding author; tel: 86-512-65112645; fax: 86-512-65108012; e-mail: tuyf@suda.edu.cn

Received: 5 March 2004   /Accepted: 20 March 2004   /Published: 23 March 2004

Abstract: This paper reports the methods to prepare the disposable electrode and the biosensors. The screen-printing technique was used and the ferrocene acted as an electron receptor. Two biosensors had been prepared by immobilizing the materials that contain the enzyme on the surface of modified electrode. The one is a polyphenol biosensor and another is an ascorbic acid biosensor. The source materials of enzyme as mushroom extraction or cucumber slice were immobilized by chemical cross-link or adhered by the polymer respectively. The characteristics of two biosensors were both satisfactorily.

Keywords: Disposable biosensor; Flake electrode; Chemical modification; Screen-printing; Polyphenol oxidase; Ascorbic acid oxidase

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