2results about How to "Improve composition" patented technology

The application discloses a method for improving the proportion of genistein in soybean isoflavone glycosides through directional fermentation. Lactobacillus sp. The method is characterized in that Lactobacillus (RS-03027) is used for fermentation after induced pre-culture, and the substrate is fed in batches, so that high selective conversion of isoflavone glycosides to genistein is realized. The strain has high beta-glucosidase activity related conversion capacity, has been preserved in the China General Microbiological Culture Collection Center, and the preservation number is CGMCC No.21302. The process realizes high accumulation and high selective enrichment of the target product, effectively inhibits non-target aglycone, and has industrial amplification application potential.

The invention discloses an efficient and easy-to-control hydrogen supply system for cultivation and a hydrogen supply method. The hydrogen supply system comprises an incubator, a water supply device and a hydrogen supply device, the side wall of the incubator is provided with an open hole and a containing cavity extending from the open hole to the interior of the incubator, the hydrogen supply device is detachably contained in the containing cavity, the containing cavity is provided with a plurality of air guide holes communicated with the interior of the incubator, and the exhaust direction of the air guide holes faces the bottom of the incubator; the hydrogen supply device comprises a rodlike porous framework and a hydrogen storage material accommodated in the rodlike porous framework; the water supply device supplies water to the accommodating cavity, so that the rod-shaped porous framework and / or the hydrogen storage material in the accommodating cavity react with water to release hydrogen, and the hydrogen enters the incubator through the gas guide hole. The hydrogen supply device is arranged in the containing cavity in the side wall of the culture box and matched with the air guide holes, controllable stable release and directional diffusion of hydrogen can be provided for multiple culture modes, and the problems that in a traditional hydrogen supply mode, hydrogen is rapidly dissipated, and the hydrogen concentration is difficult to maintain are effectively solved.