3results about How to "High degradation activity" patented technology

The application belongs to the technical field of enzyme engineering, and discloses a BhrPETase mutant and application thereof. The application provides a BhrPETase mutant, wherein the amino acid sequence is that threonine at the 160th position in the amino acid sequence shown in SEQ ID No. 2 is mutated to tyrosine, and the amino acid residues at other positions are unchanged. The BhrPETase mutant provided by the application has a PET degradation activity 2.32 times that of wild-type BhrPETase and 39.4% higher than that of mutant F208I under the condition that the thermal stability of the BhrPETase mutant is basically equivalent to that of wild-type BhrPETase. The BhrPETase mutant provided by the application can be applied to the fields of degrading PET, recycling PET degradation products or preparing a PET degradation agent.

The present application relates to the technical field of photocatalytic treatment of antibiotics in wastewater, and particularly relates to a composite photocatalytic material, a preparation method and application thereof. Melamine, palygorskite and water are mixed to obtain a mixed solution; the mixed solution is mixed with melamine foam, and after the melamine foam absorbs the mixed solution, drying is performed to obtain a precursor; the precursor is calcined to obtain the composite photocatalytic material. The composite photocatalytic material prepared by the present application can effectively improve the performance of the material in adsorbing antibiotics in water, enhance the photocatalytic degradation activity, and is easy to recycle, thus having a broad development prospect.

This invention discloses a Is PETase mutants and their application in the degradation of PET plastics. This invention addresses existing... Is The PETase mutant cannot tolerate high substrate (PET plastic) concentrations, thus providing a method to improve the degradation activity of PET plastic. Is PETase mutant. For the aforementioned Is The present invention also optimizes the reaction system of the PETase mutant, thereby providing a method for depolymerizing PET plastics. Using the mutants described in this invention, such as M16-G, the degradation of high-concentration (20%) PET plastics can be completed at a Tg temperature, and it can be used for the degradation and recycling of PET plastics under industrial conditions. Furthermore, the present invention... Is PETase mutants, such as M16-G, can tolerate seawater. Seawater can be used to prepare the reaction buffer required for its degradation of PET plastics, which helps to save freshwater resources and protect the environment.