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: firstname.lastname@example.org
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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