76 results about "Chemo enzymatic" patented technology

A process for preparing an intermediate for synthesizing escitalopram and the pharmaceutically acceptable salts thereof from 4-(4-dimethylamino)-1-(4′-fluorophenyl)-1-(hydroxybutyl)-3-(acyloxymethyl)benzonitrile is described. The process involves converting said intermediate into the (S+) enantiomer of citalopram by means of enzymatic enantiomeric resolution.

The invention provides a photobiological hydrogen production system and a preparation method and application thereof. The preparation method comprises the following steps of: S1, mixing glucose, glucose oxidase, catalase and an inorganic green alga flocculating agent, so that gluconic acid generated by enzyme cascade reaction of glucose can spontaneously react with the inorganic green alga flocculating agent to form chemical-enzyme cascade reaction; and S2, introducing the chemical-enzyme cascade reaction into a green alga illumination culture system to flocculate the green alga to form greenalga aggregates, and keeping the green alga aggregates in an anaerobic and near-neutral pH environment for a long time to obtain a photobiological hydrogen production system, and monitoring the contents of oxygen and hydrogen in the photobiological hydrogen production system through a gas chromatograph. According to the invention, a simple, cheap, long-term and efficient photobiological hydrogen production system is provided, so that the problems that the anaerobic environment is difficult to maintain for a long time and green algae are easy to damage are solved, and the development of the application of photobiological hydrogen production in large-scale commercial hydrogen preparation is expected to be promoted.