Modified epoxy resin immobilized enzyme, preparation method therefor and application thereof

A preparation method for a modified epoxy resin immobilized enzyme, comprising the following steps:

• modifying an epoxy resin, adding a polyethyleneimine to a modified epoxy resin for further modification, and then adding an enzyme to be immobilized and a glutaraldehyde for immobilization, to obtain the modified epoxy resin immobilized enzyme;
• wherein the step of modifying the epoxy resin comprises using a sodium periodate to oxidize the epoxy resin or using an iminodiacetic acid to react with the epoxy resin;
• wherein while the step of modifying the epoxy resin is to use the sodium periodate to oxidize the epoxy resin, before the sodium periodate is added, an acetic acid is firstly used to treat the epoxy resin, and after the enzyme to be immobilized and the glutaraldehyde are added for immobilization, it further comprises a step of adding a cross-linking agent glutaraldehyde or dextran aldehyde for secondary cross-linking.