Magnetically disturbed activity of immobilized catalase on an electrode in hydrogen-peroxide buffer

摘要

A catalase-immobilized platinum black electrode was used to measure the catalytic decomposition of hydrogen peroxide by catalase. The superconducting current of an 8 T superconducting magnet was swept between 0 T and 8 T, and the catalase electrode's current was monitored continuously under a voltage-stabilized condition. The sensor's current changed in correspondence with the varying magnetic fields. During the magnetic field exposures, the electrode's current increased nearly 200. The clear and reproducible increase in the electrode's current under magnetic fields indicated that the catalytic activity of catalase was disturbed under magnetic field exposure of up to 8 T and at a threshold between 1 to 2 T.