2results about How to "Reduced catalytic efficiency" patented technology

The invention relates to the technical field of biosynthesis, in particular to a preparation method of gamma-aminobutyric acid. The invention provides a method for preparing gamma-aminobutyric acid, according to the method, gamma-aminobutyric acid is catalytically synthesized by using a mutant of glutamate decarboxylase screened by the inventor, the problems of low catalytic efficiency, long conversion time and limited reuse times of enzyme are solved, the immobilized enzyme can be continuously subjected to at least 20 rounds of enzyme catalytic reaction, and the yield of gamma-aminobutyric acid is increased. And moreover, the catalytic efficiency is not obviously reduced, the substrate conversion rate can still be stabilized at 99% or above, and the method is suitable for industrial production.

The application relates to the technical field of organic synthesis, in particular to a preparation method of biphenol, wherein under visible light irradiation, biphenyl, a catalyst, acetonitrile and hydrogen peroxide are mixed and reacted, then filtered, the obtained filtrate is distilled, and the product is collected, so that the biphenol is prepared; the catalyst is a rare earth doped transition metal organic framework microsphere, the method has mild reaction conditions, is easy to operate, no toxic waste liquid is generated, and a new idea is provided for the preparation of the biphenol.