Rehák M, Snejdárková M, Otto M. Application of biotin-streptavidin technology in developing a xanthine biosensor based on a self-assembled phospholipid membrane.
Biosens Bioelectron 1994;
9:337-41. [PMID:
8068229 DOI:
10.1016/0956-5663(94)80033-2]
[Citation(s) in RCA: 51] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We have designed an amperometric xanthine minibiosensor based on a supported biotinylated phospholipid membrane. To this membrane streptavidin-modified xanthine oxidase was coupled. The fabricated biosensor corresponds in shape and size to a needle of 0.3 mm in diameter. The assay is based on the electrochemical detection of enzymatically generated hydrogen peroxide. The response to xanthine was linear up to 1 mmol.l-1 with a detection limit of 0.02 mmol.l-1. The response time was less than one minute and the biosensor was stable for at least five days.
Collapse