Abstract:
Disclosed is a method of producing a recombinant bilirubin oxidase, including a step wherein a bilirubin oxidase gene derived from imperfect filamentous fungus Myrothecium verrucaria is introduced to Escherichia coli and expression thereof is allowed. Also disclosed is a recombinant bilirubin oxidase obtained by this production method. This recombinant bilirubin oxidase has an enzymatic activity higher than that of a natural bilirubin oxidase derived from the imperfect filamentous fungus Myrothecium verrucaria.
Abstract:
A biofuel cell is formed by disposing an anode (negative electrode) to be a fuel electrode, an anode current collector, a separator, a cathode current collector, a cathode (positive electrode) to be an air electrode and a gas-liquid separation membrane in this order between a fuel tank and a positive electrode cover. During the formation, an electrode formed of a carbon fiber fabric having a network structure constituted by a monofilament strand of a carbon fiber and has a redox enzyme on the surface is used in at least the anode.
Abstract:
PROBLEM TO BE SOLVED: To provide a biofuel battery and a power supply device capable of replenishing a battery main body with fuel without using a fuel cartridge.SOLUTION: A fuel supplying part consisting of, for example, a beehive base or a beehive plate for honey bees, is provided on one surface of a power generation part having electrodes (an anode and a cathode) on whose surfaces a redox enzyme exists, and collection and/or modification of fuel is performed by organisms such as honey bees. At this time, if needed, filter materials such as a nonwoven fabric and a cellophane are arranged between the anode and the beehive base or the beehive plate to supply the honey to the anode via these filter materials.