Disclosed is a disposable glucose strip sensor configured to rapidly and conveniently measure the concentration of glucose in blood and a glucose measurement method using the glucose strip sensor. In the glucose strip sensor, at least one checking electrodes are additionally provided at an electrode section including an operating electrode and a counter electrode. The checking electrode serves to check whether or not it is electrically connected with the counter electrode, upon measuring the con...

The present invention relates to a technique for measuring a glucose level by utilizing a reaction system containing an enzyme and an electron carrier. In accordance with the glucose level measuring method of the present invention, glucose dehydrogenase with cytochrome C attached thereto or glucose dehydrogenase derived from a microorganism belonging to a burkholderia genus is used as the enzyme, and a Ru compound is used as the electron carrier. The present invention further provides a glucose ...

An amperometric glucose biosensor having high sensitivity and accuracy over a wide range of glucose concentrations and a method for the rapid detection of glucose in urine are provided. The biosensor strip comprises an electrically conductive carbon layer, having a first redox mediator, a reagent strip containing an enzyme system for the oxidation of glucose and a second redox mediator, and a silver/silver chloride reference electrode. In a preferred form of the sensor that has high sensitivity,...

A device for the non-invasive determination of blood glucose of a patient. This glucose monitor is based upon the effect of glucose in rotating polarized infra-red light. More specifically, two orthogonal and equal polarized states of infra-red light of minimal absorption are passed through a tissue containing blood, and an accurate determination of change in signal intensity is made due to the angle of rotation of these states. This rotation depends upon the glucose level. In order to compensat...

A glucose isomerase useful for the conversion of glucose to fructose can be prepared by growing under aerobic conditions a culture of a species of Microbacterium in a medium containing appropriate nutrients and then recovering the enzyme.

Glucose is converted to fructose in the presence of an enzyme preparation derived from a member of the genus Arthrobacter.

Process for the recovery of glucose oxidase in highly purified form comprising adjusting the pH of an aqueous solution containing impure glucose oxidase to a value of from 6.5 to 7.5, while maintaining the temperature of the solution at from 15.degree. to 25.degree. C., adding methanol up to a concentration of 62 volume percent and separating off the precipitate thereby formed.

Glucose dehydrogenase having the following biochemial properties: (a) enzymatic action: catalyzes a reaction which generates glucono-.delta.-lactone and reduced NADP from glucose and NADP; (b) substrate specificity: has substrate specificity on glucose and no substrate specificity on 2-deoxyglucose; (c) optimum pH: pH 6-8, (d) optimum temperature: approximately 55.degree. C., (e) pH-stability: stable at pH 6.0-7.5, (f) molecular weight: 11.times.10.sup.4 .+-.11000, (g) Km-value: 2.6.times.10.sup...

A novel glucose isomerase enzyme useful for the conversion of glucose to fructose can be prepared by growing under aerobic conditions a culture of Streptomyces olivaceus NRRL 3583 or mutants thereof in a medium containing appropriate nutrients and then recovering the enzyme therefrom.

The present invention is directed to a method for enzymatically isomerizing glucose in glucose-containing liquors. The presence of relatively small amounts of water-soluble salts of sulfurous acid during the enzymatic isomerization of glucose in glucose-containing liquors reduces color formation therein and increases the stability of the glucose-isomerizing enzyme.