3results about How to "Fully functional" patented technology

The application discloses collagen tripeptide and a preparation method and application thereof, and belongs to the technical field of bioengineering. The preparation method comprises the following steps: obtaining bacillus velezensis with high collagenase yield through separation and identification, the bacillus velezensis belongs to probiotics, and high-activity collagenase is obtained through fermentation culture and purification; taking shark cartilage or blue fish skin as raw materials, and obtaining collagen tripeptide through the following steps of combined enzymolysis of alkaline protease and collagenase after pretreatment, inactivation, centrifugal separation and freeze-drying. The collagen tripeptide prepared by the application has a molecular weight of less than 500 Dalton, contains active components such as GHK tripeptide, is easy to absorb and has high safety, and can be used for preparing antioxidant products, anti-inflammatory products, memory-enhancing products or immunity-enhancing products. The application solves the problems of unsafe collagenase source and low collagen tripeptide preparation efficiency, and has a good industrial application prospect.

This invention discloses a method and system for treating fermentation wastewater, belonging to the field of fermentation wastewater treatment. This invention solves the problems of non-zero discharge, low treatment efficiency, and high treatment difficulty in existing technologies for fermentation wastewater. This invention designs different treatment routes and systems for three types of wastewater with different characteristics: high-salinity wastewater, low-salinity wastewater, and microbial protein waste liquid. For high-salinity wastewater, a process of screen + coagulation sedimentation + multi-media filtration + ozone catalytic oxidation is used to remove organic matter and total phosphorus; for low-salinity wastewater, a highly active sludge biochemical treatment technology is used to remove nitrogen and phosphorus; and for microbial protein waste liquid, a sludge collection + screw press dewatering technology is used to achieve thorough dewatering. The treatment processes for the three types of wastewater are carried out simultaneously, and the effluent is recycled back into the three systems for further treatment, achieving zero discharge of fermentation wastewater. Furthermore, this treatment method reduces the wastewater treatment pressure on the system, improves treatment efficiency, and allows for wastewater reuse, showing broad application prospects.

The utility model discloses a fresh-keeping drawer and a refrigerator, and the fresh-keeping drawer comprises a controlled atmosphere drawer which is internally provided with a nitrogen-oxygen separation assembly which is used for separating oxygen from the controlled atmosphere drawer; the gas inlet end of the nitric oxide preparation device is connected with the controlled atmosphere drawer, and the nitric oxide preparation device is used for preparing nitric oxide by adopting nitrogen in the controlled atmosphere drawer; and the nitric oxide fresh-keeping drawer is connected with the air outlet end of the nitric oxide preparation device and is used for keeping the nitric oxide prepared by the nitric oxide preparation device fresh. The problem that in the prior art, the preparation efficiency of NO gas for preservation is low is solved, and the preparation concentration and efficiency of nitric oxide are improved.