- P-ISSN 1225-0163
- E-ISSN 2288-8985
In principle, the blood galactose level may be determined conveniently with a strip-type biosensor similar to that for glucose. In this study, we describe the development of a disposable galactose biosensor strip for point-of-care testing. The sensor strip is constructed with screen-printed carbon paste electrode (SPCE) and sample amount (< <TEX>$100{\mu}L$</TEX>). The developed strip the galactose level in less than 90 s using bienzymatic system of galactose oxidase (GAO) and horseradish peroxidase (HRP). The effects of pH, mediator (1,1-ferrocenedimethanol) concentration, ratio of enzymes, and applied potential were determined preliminarily with glassy carbon electrodes, and optimized further with the strip-type electrodes. The sensor exhibits linear response in the range of <TEX>$0{\sim}400{\mu}M$</TEX> (<TEX>$r^2$</TEX>
S. Segal, (1989) ?The Metabolic Basis of Inherited Disease?, McGraw-Hill Book Co.
S. Segal, (1995) McGraw-Hill, 5, 967-1000 (1995).,
M. Smolander, (1995) Anal. Chim. Acta, 302, 233-240 (1995).,
P. Manowitz, (1995) Biosens, Bioelectron
L. Coche-Guerente, (1995) Anal. Chim. Acta, 311, 23-30,