摘要:
An object of the present invention is to provide a method for conveniently producing reduced pyrroloquinoline quinone from oxidized pyrroloquinoline quinone without needing expensive equipment, and a method for stabilizing reduced pyrroloquinoline quinone. According to the present invention, high-quality reduced pyrroloquinoline quinone can be obtained conveniently and efficiently in a manner suitable for industrial-scale production by mixing pyrroloquinoline quinone and ascorbic acid in a solvent.
摘要:
A crystal of pyrroloquinoline quinone disodium salt having peaks at 2θ of 9.1°, 10.3°, 13.8°, 17.7°, 18.3°, 24.0°, 27.4°, 31.2° and 39.5° (±0.2° for each) in powder X-ray diffractometry using Cu Kα radiation, or a crystal of pyrroloquinoline quinone trisodium salt having peaks at 2θ of 6.6°, 11.4°, 13.0°, 22.6°, 26.9°, 27.9°, 37.0°, 38.9° and 43.4° (±0.2° for each) in powder X-ray diffractometry using Cu Kα radiation.
摘要:
A crystal of pyrroloquinoline quinone disodium salt having peaks at 2θ of 9.1°, 10.3°, 13.8°, 17.7°, 18.3°, 24.0°, 27.4°, 31.2° and 39.5° (±0.2° for each) in powder X-ray diffractometry using Cu Kα radiation, or a crystal of pyrroloquinoline quinone trisodium salt having peaks at 2θ of 6.6°, 11.4°, 13.0°, 22.6°, 26.9°, 27.9°, 37.0°, 38.9° and 43.4° (±0.2° for each) in powder X-ray diffractometry using Cu Kα radiation.
摘要:
An object of the present invention is to provide a method for conveniently producing pyrroloquinoline quinone in the free form without any organic solvent or ion-exchange resin and highly-pure crystals thereof. According to the present invention, there is provided a production method of pyrroloquinoline quinone in the free form and highly-pure crystals thereof, wherein the production method comprises preparing a solution having a pH of 1.5 or less by dissolving an alkali metal salt of pyrroloquinoline quinone to obtain a precipitate.
摘要:
An object of the present invention is to provide an industrially useful method for producing a calcium salt of pyrroloquinoline quinone, without using large amounts of organic solvents, and highly pure crystals produced thereby. According to the present invention, a highly pure calcium salt of pyrroloquinoline quinone can be produced by reacting an alkali metal salt of pyrroloquinoline quinone with a source of calcium ions.
摘要:
An object of the present invention is to provide an industrially useful method for producing a calcium salt of pyrroloquinoline quinone, without using large amounts of organic solvents, and highly pure crystals produced thereby. According to the present invention, a highly pure calcium salt of pyrroloquinoline quinone can be produced by reacting an alkali metal salt of pyrroloquinoline quinone with a source of calcium ions.
摘要:
An object of the present invention is to provide a salt of pyrroloquinoline quinone having a high solubility in water and in an organic solvent and a method for producing the same.According to the present invention, there are provided an ammonium salt of pyrroloquinoline quinone having a high solubility in water and in an organic solvent, consisting of a pyrroloquinoline quinone ion and an ammonium salt having a hydroxyl group.
摘要:
An object of the present invention is to provide a gel containing pyrroloquinoline quinone that is capable of easily forming a gel near room temperature and is useful even in the food sector, and a method for producing the gel. According to the present invention, there is provided a gel containing pyrroloquinoline quinone that uses pyrroloquinoline quinone itself as a gelling agent and a method for producing the gel by adding a salt of pyrroloquinoline quinone to water and subsequently adjusting the temperature or the pH to reduce solubility.
摘要:
The present invention provides a method for transferring a gene into cells, which is practically useful and can achieve high transfer efficiency, and also a composition for use in the method. By bringing a mixture of a composition comprising a diallylamine sulfur dioxide copolymer having a repeating unit represented by the formula (1) or a salt thereof and a gene into contact with a cell, a gene such as DNA and RNA can be transferred into a target cell safely and conveniently, and into a cell at a specific site with high gene transfer efficiency.
摘要:
The present invention provides a method whereby, in transferring a gene into a cell by contacting the cell with a gene to be transferred into the cell in a container and then electrospraying a spray liquid free from the gene on the cell and gene in the container, the gene can be rapidly and conveniently transferred into the cell with high transfer efficiency while minimizing the degradation of the gene, and an apparatus therefor. A nozzle for electrospraying comprising a tube portion for applying a high voltage, which is made of an electrically conductive substance and located on the side of the spray liquid suction port, and another tube portion for spraying, which is made of an insulating substance and located on the side of the spray liquid ejection port. By using this nozzle, electrospraying can be performed while preventing a discharge phenomenon that causes degradation of the gene. Thus, transfer efficiency of the gene into the cell can be remarkably improved, and the gene can be rapidly and conveniently transferred into the cell.