The adsorption of urea nitrogen onto dialdehyde cellulose (DAC) under catalysis of immobilized urease in gelatin (IU) was studied in batch system.

Substrate was hydrolyzed by immobilized urease to produce NH_3 and CO_2 in Tris-HCl buffer (pH 7.

The free urease is unstable, and the immobilized urease is stable in thesolution.

In this paper, the modification of KGM and apply them in urease immobilization have been researched.

Application of immobilized enzyme in food industry;

Recent progress of carrier materials used for immobilized enzyme by plasma optimization and modification technology;

Approximate solutions for diffusion-reaction problem of immobilized enzyme;

Research status and application on matrices for immobilized enzymes;

Using carrier materials treated by plasma technology exploits a new land of immobilized enzymes.

The development and the mechanism of stereochemical resolution of racemates, in HPLC, using a chiral stationary phase based upon immobilized enzymes,was reviewed with 22 references.

Application of natural polysaccharide on materials used as enzyme immobilization carriers;

Research advances in enzyme immobilization technology and the carrier m aterials;

In order to improve the catalytic properties of enzymes,the author and his group have devoted themselves to the researches of enzymatic molecular modification,enzyme immobilization,non-aqueous enzymatic catalysis and directed enzyme evolution in the past two decades,finding that the catalytic properties of enzymes such as activity and stability.

Experiments show that nanoparticles can significantly enhance the catalytic activity of the immobilization enzyme.

The function of nanoparticles effect on immobilization enzyme is discussed.

The thesis summarizes the progress of methods, carriers, application of immobilization enzyme, and the design and synthesis of novel reactive carrier materials, also includes study of the optimal conditions of immobilization enzyme and the properties of the immobilized enzyme.