A microorganism of the genus Corynebacterium producing L-arginine, and a method for producing L-arginine using the same.

Disclosed is a modified microorganism producing putrescine or ornithine, and a method for producing putrescine or ornithine using the same.

Disclosed is a modified microorganism producing putrescine or ornithine, and a method for producing putrescine or ornithine using the same.

The present invention relates to a recombinant microorganism for producing putrescine or ornithine, and a method for producing putrescine or ornithine using the same. Specifically, the present invention relates to a microorganism of the genus Corynebacterium capable of producing putrescine or ornithine, in which an activity of the transcriptional regulator of sugar metabolism (SugR) is weakened, an activity of the citrate synthase (GltA) is enhanced, or both are applied; and a method for producing putrescine or ornithine using the same.

The present invention relates to a recombinant microorganism for producing putrescine or ornithine, and a method for producing putrescine or ornithine using the same. Specifically, the present invention relates to a microorganism of the genus Corynebacterium capable of producing putrescine or ornithine, in which an activity of the transcriptional regulator of sugar metabolism (SugR) is weakened, an activity of the citrate synthase (GltA) is enhanced, or both are applied; and a method for producing putrescine or ornithine using the same.

The present invention relates to a method of separating amino acids from an aqueous solution comprising amino acids as well as proteins and/or protein decomposition products by combining phosphoric acid with the aqueous solution to precipitate an amino acid monophosphate. The precipitate so formed may be separated from the aqueous solution and used as such, e.g. in plant fertilizer compositions. The precipitate may be redissolved in a suitable liquid, after which phosphate and amino acid may be separated following conventional methods. In either case, the present invention enables highly selective precipitation of arginine and/or lysine monophosphate as crystals.

The present disclosure relates to a novel polypeptide having an ability to export an ornithine-based product, and a method for producing an ornithine-based product using the same.

The present disclosure relates to a novel polypeptide having an ability to export an ornithine-based product, and a method for producing an ornithine-based product using the same.

The present invention relates to the technical field of natural substance extraction. Disclosed is a method for extracting Citrulline from a watermelon. The method for extracting Citrulline from a watermelon in the present invention comprises Raw material pretreatment, ultrasound-enzymatic hydrolysis assisted solvent leaching, and purification steps. The purification step comprises microbial fermentation, ion-exchange resin purification, macroporous adsorption resin discoloration, and crystallization and recrystallization. The method for extracting Citrulline in the present invention is simple, requires a mild condition, and has a good extraction effect on Citrulline. The purity of Citrulline after purification is more than 90%. In addition, the Citrulline extracted by the method in the present invention meets the related health requirements and product quality standards, can be applied to food and health food industries as a raw material, and has natural security advantages.

The present invention relates to the technical field of natural substance extraction. Disclosed is a method for extracting Citrulline from a watermelon. The method for extracting Citrulline from a watermelon in the present invention comprises Raw material pretreatment, ultrasound-enzymatic hydrolysis assisted solvent leaching, and purification steps. The purification step comprises microbial fermentation, ion-exchange resin purification, macroporous adsorption resin discoloration, and crystallization and recrystallization. The method for extracting Citrulline in the present invention is simple, requires a mild condition, and has a good extraction effect on Citrulline. The purity of Citrulline after purification is more than 90%. In addition, the Citrulline extracted by the method in the present invention meets the related health requirements and product quality standards, can be applied to food and health food industries as a raw material, and has natural security advantages.