Patent ID: 8673127
Filing Date: 2014-03-18
Classification: C12Q

Abstract:
1. A biosensor for measuring the concentration of a specific substance in a sample solution, the biosensor comprising electrodes comprising at least a working electrode and a counter electrode provided on an insulating support; and a reagent layer which reacts with the specific substance in the sample solution; wherein the reagent layer comprises an enzyme, an electron transfer agent, and an organic acid or organic acid salt which has at least one carboxyl group; the organic acid is aliphatic carboxylic acid, carbocyclic carboxylic acid, heterocyclic carboxylic acid, a substitution product, or derivative of the organic acid; the carboxylic acid is malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, benzoic acid, phthalic acid, isophthalic acid, terephthalic acid, 2-phthalic acid, nicotinic acid, isonicotinic acid, their salt, or a combination thereof; and the enzyme is glucose dehydrogenase.