Patent ID: 6340597
Filing Date: 2002-01-22
Classification: C12Q,Y10S

Abstract:
An electrochemical biosensor comprising:a) an electro-conducting material, in the form of powder or grains; b) a chemical mediator; c) a substance absorbing said chemical mediator; and d) one solid binding maker, selected from the group consisting of: linear or branched, saturated or unsaturated hydrocarbons, containing from 12 to 60 carbon atoms optionally substituted with at least a group selected from â€”OH, â€”SH, â€”NH2, â€”COâ€”. â€”CHO, â€”SO3H, â€”COOH, â€”OR1, â€”SR1, â€”NR1R2, and â€”COOR1, wherein R1 and R2 are independently hydrocarbon groups, C1-C30, optionally containing one or more heteroatoms; esters of fatty acid or a mixture of fatty acids with glycerol; and esters of a fatty acid or a mixture of fatty acids with cholesterol, said solid binding maker having a melting point comprised between 35Â° C. and 90Â° C. and said elements a)-d) constituting a composite transducer, and a biocatalyst which is a redox enzyme, and wherein said biocatalyst is either incorporated in bulk into said composite transducer or it is applied in the form of a layer onto the surface of said composite transducer, said electrochemical biosensor being optionally covered by a membrane, and wherein said electrochemical biosensor comprises, with reference to 100 parts by weight of the sum of the components (a)-(d): a) from 30 to 60% by weight; b) from 1 to 10% by weight; c) from 1 to 20% by weight; d) from 30 to 60% by weight.