WO2013002317A1 - 固体状酸化型グルタチオン塩及びその製造方法 - Google Patents
固体状酸化型グルタチオン塩及びその製造方法 Download PDFInfo
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- WO2013002317A1 WO2013002317A1 PCT/JP2012/066510 JP2012066510W WO2013002317A1 WO 2013002317 A1 WO2013002317 A1 WO 2013002317A1 JP 2012066510 W JP2012066510 W JP 2012066510W WO 2013002317 A1 WO2013002317 A1 WO 2013002317A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/02—Linear peptides containing at least one abnormal peptide link
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
- A23L2/52—Adding ingredients
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/17—Amino acids, peptides or proteins
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/64—Proteins; Peptides; Derivatives or degradation products thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P39/00—General protective or antinoxious agents
- A61P39/02—Antidotes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/02—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing at least one abnormal peptide link
- C07K5/0215—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing at least one abnormal peptide link containing natural amino acids, forming a peptide bond via their side chain functional group, e.g. epsilon-Lys, gamma-Glu
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Definitions
- the present invention relates to a technique for improving the handleability of oxidized glutathione.
- Oxidized glutathione is useful as health foods, pharmaceuticals, cosmetics, fertilizers, etc., or as an intermediate for producing them.
- oxidized glutathione is useful in fields such as health foods, pharmaceuticals, cosmetics, and fertilizers.
- detoxification is known (Non-Patent Document 1, etc.) ).
- Oxidized glutathione is a molecule obtained by oxidation of two molecules of reduced glutathione (GSH) to form a disulfide bond.
- the reduced glutathione is a tripeptide (L) consisting of glutamic acid, cysteine, and glycine. - ⁇ -glutamyl-L-cysteinyl-glycine).
- oxidized glutathione for example, a method in which an aqueous solution of reduced glutathione or a yeast solution is first prepared by fermentation, and the aqueous solution or yeast solution is oxidized to produce the oxidized glutathione as an aqueous solution is known.
- Patent Document 1 Patent Document 2, etc.
- the oxidized glutathione thus obtained is pulverized by adding an excipient or the like to the aqueous solution and freeze-drying or spray-drying (oxidized glutathione-containing yeast extract powder).
- excipients may not be permitted, and there are cases where the use is restricted.
- the oxidized glutathione obtained as a solid without using an excipient can be obtained, for example, by separating and purifying oxidized glutathione from the aqueous solution of oxidized glutathione, followed by freeze drying, spray drying, and the like.
- Oxidized glutathione anhydrate powder is known.
- three forms of oxidized glutathione, such as oxidized glutathione hydrate and oxidized glutathione salt, are also known. However, all of these have various problems in industrial use.
- the anhydrous form of oxidized glutathione has a problem of extremely high hygroscopicity and deliquescence.
- anhydrous products are used in aqueous solutions such as injectable drugs because of their high water solubility, but they are easily transferred to hydrates in water. Hydrates are poorly soluble in water, and there is a risk that crystals will precipitate from aqueous solutions.
- Non-patent Document 2 crystals of oxidized glutathione octahydrate
- Patent Document 3 crystals of oxidized glutathione monohydrate
- Oxidized glutathione octahydrate crystals have a low stability because the water of crystallization is easily released and the water content in the crystals is difficult to be constant. In addition, the reproducibility of octahydrate production is poor, and it is not suitable for mass synthesis or industrialization.
- Oxidized glutathione monohydrate crystals have low deliquescence, but have low solubility in water and are difficult to handle in aqueous solutions, making it impossible to produce highly concentrated aqueous products.
- oxidized glutathione salts with metals and amino acids are known.
- metal salt of oxidized glutathione oxidized glutathione disodium salt is commercially available, and alkali metal salts such as oxidized glutathione dilithium salt (Patent Document 4) are known.
- an isolated example of an oxidized glutathione amino acid salt such as oxidized glutathione-1 ornithine salt (Patent Document 5) and oxidized glutathione / 1 lysine salt (Patent Document 6) has been reported. Few.
- Alkali metal salts of oxidized glutathione such as oxidized glutathione disodium salt and oxidized glutathione dilithium salt, are difficult to obtain in the first place. Furthermore, the deliquescence property is very high, and it is not suitable for industrial use like the anhydrous glutathione anhydride.
- the oxidized glutathione ⁇ 1 ornithine salt and oxidized glutathione ⁇ 1 lysine salt, which are oxidized glutathione amino acid salts have the same functional group as oxidized glutathione. Has a problem that there are many restrictions in addition to the final product because the target reaction is inhibited by the competitive reaction of amino acids and the amino acid is a physiologically active substance.
- the present invention has been made paying attention to the circumstances as described above, and its purpose is a solid state that has low deliquescence and is easy to handle, is highly water-soluble, and has few restrictions on use.
- the object is to provide oxidized glutathione.
- the conventional oxidized glutathione solid has a problem of high deliquescence and low water solubility.
- oxidized glutathione that are solidified with excipients and solidified as amino acid salts are also known, but their use may be restricted.
- Patent Document 4 an oxidized glutathione diammonium salt is formed during the process of producing oxidized glutathione dilithium salt from reduced glutathione, but this ammonium salt has been isolated as a solid. Absent.
- an aqueous solution of oxidized glutathione is obtained as a solid by adjusting the aqueous solution of the ammonium salt to pH 5 and freeze-drying. Since the current point of oxidized glutathione is around pH 2.8, it is estimated that oxidized glutathione and ammonia continue to form a salt even when the aqueous ammonium salt solution is adjusted to pH 5. The ammonium salt of oxidized glutathione has not been isolated.
- the present inventors have found that, according to a specific warming production method, only an ammonium cation, a calcium cation, and a magnesium cation can form oxidized glutathione and a solid salt.
- the solid oxidized glutathione salt thus obtained was found to have low deliquescence and high water solubility, and the present invention was completed.
- the solid oxidized glutathione salt of the present invention is an aqueous solution composed of water and / or a water-soluble medium in the presence of a substance capable of generating at least one cation selected from an ammonium cation, a calcium cation, and a magnesium cation. It can be produced by heating oxidized glutathione to a temperature of 30 ° C. or higher while contacting with a medium to produce a salt of the oxidized glutathione and the cation as a solid. The heating time at the temperature of 30 ° C. or higher is, for example, 0.25 hours or longer.
- the water-soluble medium alcohols (such as methanol, ethanol, propanol, and butanol) and ketones (such as acetone and methyl ethyl ketone) are preferable.
- the solid oxidized glutathione salt of the present invention is an oxidized glutathione salt composed of at least one cation selected from ammonium cation, calcium cation and magnesium cation, and oxidized glutathione, and is solid at room temperature. This is a feature.
- This glutathione salt preferably does not start to deliquesce even if stored for 2 hours or more at a temperature of 25 ° C., normal pressure, and relative humidity of 75% RH, and can maintain a solid state even after being subjected to mechanical shock. is there.
- Examples of the glutathione salt include 1-ammonium salt of oxidized glutathione, 0.5 calcium salt or 1 calcium salt of oxidized glutathione, 0.5 magnesium salt or 1 magnesium salt of oxidized glutathione, and the like.
- the above-mentioned solid oxidized glutathione salt-containing powder agent solid oxidized glutathione content: 0.01% by mass or more
- the above solid oxidized glutathione salt are dissolved in water or a water-containing organic solvent.
- a dispersed liquid agent is also included.
- the organic solvent include alcohols, ketones, aldehydes, esters, hydrocarbons, sulfoxides, ethers, and the like.
- a solid oxidized glutathione salt can be easily obtained by treating oxidized glutathione with a specific heating method using a specific cation. Further, according to the present invention, a salt of oxidized glutathione is formed by a specific cation, so that it is low deliquescence and easy to handle, yet it is highly water soluble and has few restrictions on use. Oxidized glutathione can be provided.
- An object of the present invention is to precipitate a salt thereof as a solid from a solution containing oxidized glutathione.
- the oxidized glutathione that can be used as a raw material is not particularly limited, and may be, for example, a commercially available product obtained by oxidizing reduced glutathione obtained by a known method such as a fermentation method by a known method. However, other than these may be used.
- the oxidation reaction proceeds with an oxidizing agent in an appropriate solvent (for example, water).
- the oxidizing agent include weak oxidizing agents such as oxygen; strong oxidizing agents such as hydrogen peroxide, iodine and potassium ferrocyanide.
- a gaseous substance nitrogen oxide
- sulfoxide or the like may be used.
- an oxidation catalyst such as copper sulfate, iron sulfate, or iron (III) chloride may be used as necessary.
- the pH of the reaction solution it is recommended to adjust the pH of the reaction solution, and the pH is, for example, 5 to 12, preferably 6 to 10, and more preferably 7 to 9. By adjusting the pH to the above range, reduced glutathione and oxidized glutathione can be stabilized, and the reaction rate can be increased.
- the oxidized glutathione is isolated from the oxidized glutathione solution obtained by the oxidation reaction or further purified as necessary, these isolated or purified products may be used as the oxidized glutathione raw material.
- the oxidized glutathione solution may be used as it is as the oxidized glutathione raw material without performing post-treatment such as isolation and purification. In the isolation operation, for example, concentration, dilution, filtration, and the like of the solution are performed.
- oxidized glutathione is used as an aqueous medium in the presence of a substance capable of generating at least one cation selected from ammonium cation, calcium cation, and magnesium cation. It was found that if the temperature was raised to 30 ° C. or higher while contacting, the salt was produced as a solid, and the object could be achieved. For example, when a sodium cation or a lithium cation is used as the cation, the salt does not form as a solid even when heated to a temperature of 30 ° C. or higher. Even when the temperature is not raised to 30 ° C. or higher, the salt is not produced as a solid. It has been found that an inorganic salt of oxidized glutathione is produced as a solid by combining a specific cation with specific processing conditions.
- Examples of the substance capable of generating the cation include ammonia (such as ammonium hydroxide), ammonium halide (such as ammonium chloride and ammonium bromide), ammonium carbonates (such as ammonium carbonate and ammonium hydrogen carbonate), ammonium phosphate, Ionic ammonium-containing compounds such as ammonium sulfate and ammonium acetate; ionic calcium-containing compounds such as calcium hydroxide, calcium halide (calcium chloride, etc.), calcium carbonates (calcium carbonate, calcium bicarbonate, etc.); magnesium hydroxide, halogen Ionic magnesium-containing compounds such as magnesium chloride (magnesium chloride, etc.), magnesium carbonates (magnesium carbonate, magnesium bicarbonate, etc.), magnesium sulfate, etc.
- ammonia such as ammonium hydroxide
- ammonium halide such as ammonium chloride and ammonium bromide
- ammonium carbonates such as ammonium carbonate and ammoni
- bases are bases other than ammonia, calcium and magnesium that can be gas or water (for example, ammonia, ammonium hydroxide, ammonium carbonate, calcium hydroxide, calcium carbonates, magnesium hydroxide, magnesium carbonate).
- Particularly preferred bases are hydroxides (ammonium hydroxide (ammonia water), calcium hydroxide, magnesium hydroxide, etc.).
- the cation-generating substances (particularly bases) can be used alone or in appropriate combination.
- an ammonium salt, a calcium salt, or a magnesium salt may be formed by forming a salt with an oxidized glutathione and a cation other than ammonium, calcium, and magnesium, and exchanging the cation species.
- the exchange of the cationic species is not particularly limited, but for example, a solubility difference and an equilibrium relationship can be used.
- the amount of the cation-generating substance to be used can be appropriately set according to the amount of cation to be contained in the solid oxidized glutathione salt to be generated.
- the molar ratio is the same. Accordingly, the amount (molar ratio) of the cation to oxidized glutathione is often set in the same range as the molar ratio in the solid described later.
- the aqueous medium includes water and / or a water-soluble medium (particularly a water-soluble organic medium).
- the water-soluble organic medium include alcohols (methanol, ethanol, propanol, butanol, ethylene glycol, etc.), ketones (acetone, methyl ethyl ketone, etc.), ethers (tetrahydrofuran, dioxane, etc.), esters, nitriles (acetonitrile, etc.) ), Amides (N, N-dimethylformamide, acetamide, etc.) and the like, preferably alcohols or ketones.
- the carbon number of the water-soluble organic medium may be, for example, 5 or less, preferably 3 or less, and more preferably 1.
- the aqueous medium is preferably water, acetone, ethanol or the like (especially water or ethanol).
- water or ethanol especially water or ethanol
- the water-soluble organic medium may be a medium in which 100 parts by mass or more can be mixed with 100 parts by mass of water at a temperature of 25 ° C., or may be a medium that is miscible with water at any ratio. .
- the aqueous medium may be used alone or in combination of two or more, but it is recommended to use water and a water-soluble medium in combination.
- water functions as a rich solvent for oxidized glutathione
- a water-soluble medium functions as a poor solvent.
- the volume of the water-soluble medium is, for example, about 1 to 1000 parts by volume, preferably about 5 to 500 parts by volume, more preferably about 10 to 100 parts by volume, and particularly about 12 to 50 parts by volume with respect to 10 parts by volume of water. It is.
- the mass (concentration, etc.) of oxidized glutathione relative to the total mass of the aqueous medium and oxidized glutathione is not particularly limited, and can be suitably carried out, for example, in the range of 0.1% by mass to 60% by mass.
- the lower limit is preferably 1% by mass or more, more preferably 5% by mass or more, and particularly preferably 8% by mass or more from the viewpoint of production efficiency.
- the upper limit is preferably 40% by mass or less, and more preferably 30% by mass or less.
- a solvent other than the above aqueous medium may be used in combination with the above aqueous medium as necessary, as long as it does not adversely affect the solidification of the oxidized glutathione salt.
- an unnecessary cation generating substance may be neutralized with an acid thereafter.
- the acid that can be used is not particularly limited, but in view of cost and ease of removal, mineral acids such as hydrochloric acid and sulfuric acid are preferable.
- the pH of the aqueous medium varies depending on the temperature and the presence or amount of the water-soluble medium, and it is difficult to define it generally. 2.8 or more, preferably 3.0 or more, more preferably 3.2 or more, and the upper limit thereof is, for example, 7.0 or less, preferably 6.0 or less, more preferably 5.5 or less. .
- heating temperature is 30 degreeC or more, Preferably it is 33 degreeC or more, More preferably, it is 35 degreeC or more, Most preferably, it is 40 degreeC or more. If the heating temperature is less than 30 ° C., the target salt of oxidized glutathione does not solidify over time and remains as an oil, and cannot be obtained as a solid. Furthermore, considering workability on an industrial scale (the amount of aqueous medium used is, for example, 10 kg or more, preferably 100 kg or more, more preferably 500 kg or more, and a scale of 30 tons or less, preferably about 10 tons or less). The heating temperature is more preferably higher than 45 ° C, particularly preferably 48 ° C or higher.
- the heating temperature is 30 ° C. or higher, depending on other conditions, a mixture of a solidified product and an oily product may be precipitated to become an emulsified state, which may make stirring difficult when producing on an industrial scale. Further, by setting the heating temperature to 45 ° C. or higher, it is possible to increase the solid precipitation rate and prevent the emulsified state.
- the upper limit of the heating temperature is not particularly limited, but it is preferable to carry out at a boiling point or lower of the aqueous medium from the viewpoint of safety without requiring high pressure.
- the higher the heating temperature the longer the time required for a predetermined amount of the oxidized glutathione salt to precipitate.
- the heating temperature is, for example, 80 ° C. or less, preferably 70 ° C. or less, particularly preferably 60 ° C. or less. Particularly in production on an industrial scale, the heating temperature is particularly preferably in the range of 53 to 60 ° C. from the viewpoint of both the precipitation rate and the properties of the obtained oxidized glutathione salt.
- the said heating is normally implemented by a normal pressure, you may implement under pressurization and may implement it under reduced pressure.
- the heating time can be appropriately set within the range necessary for solidification of the oxidized glutathione salt, and the appropriate time varies depending on the heating temperature, and it is difficult to define it generally. .25 hours or more, preferably 0.5 hours or more, more preferably 1 hour or more, especially 2 hours or more when the heating temperature is high (for example, 45 ° C. or more) or on an industrial scale. Further, in some cases, 3 hours or more is preferable.
- the upper limit is, for example, 48 hours or less, preferably 24 hours or less, more preferably 10 hours or less. It is more preferable to hold at 30 ° C. or higher for the time exemplified above after the solidification of the oxidized glutathione salt starts.
- the stirring strength is not particularly limited, but the lower limit is usually 0.001 kW / m as the power required for stirring. 3 or more, preferably 0.03kW / m 3 or more, more preferably 0.2 kW / m 3 or more, the upper limit is 5 kW / m 3 or less, preferably 2 kW / m 3 or less, more preferably 1 kW / m 3 It is as follows.
- the oxidized glutathione may be heated to a temperature of 30 ° C. or higher while contacting with an aqueous medium in the presence of a predetermined cation-generating substance, and the process up to this state is not particularly limited.
- the mixing procedure of the cation-generating substance, oxidized glutathione, and the aqueous medium is not particularly limited, and may be mixed by any procedure.
- the mixing procedure and timing are set suitably.
- a predetermined cation-generating substance and oxidized glutathione are mixed with water (first mixing) (preferably after the oxidized glutathione and cation-generating substance are dissolved in water).
- the first mixed liquid and the water-soluble medium are mixed (second mixing).
- first mixing it is desirable that either one (preferably both) of the cation-generating substance and oxidized glutathione is dissolved in water in advance to form a solution and then mixed.
- the water-soluble medium may be added to the first liquid mixture, the first liquid mixture may be added to the water-soluble medium, and the first liquid mixture and the water-soluble medium are added to another container. You may add at the same timing.
- the timing for heating to a temperature of 30 ° C. or more can be set as appropriate.
- the second mixing Although it may be any later, it is most preferable that the temperature is heated to 30 ° C. or higher before the second mixing is started at the latest, and thereafter this heating temperature is maintained.
- the solidification process of the oxidized glutathione salt after heating to a temperature of 30 ° C. or higher is not particularly limited, and various processes can be performed.
- Example 1) A solid oxidized glutathione salt can be precipitated from a solution containing oxidized glutathione, and
- Example 2) Oxidized glutathione is oily (oiled out) or gel-like from a solution or slurry containing oxidized glutathione. These oily substances or gels can be solidified after separation as a compound, and Example 3)
- the oxidized glutathione salt can be solidified while removing the solvent from the solution or slurry containing oxidized glutathione.
- oxidized glutathione can be precipitated as a solid from the second mixed solution in which oxidized glutathione is dissolved.
- the salt of oxidized glutathione usually precipitates as a solid.
- the salt of oxidized glutathione may be precipitated as a solid if the heating start is not too late.
- the salt of oxidized glutathione starts to precipitate as a solid during the second mixing, and may be mixed while slurrying.
- seed crystals may be added as necessary to promote solidification of the oxidized glutathione salt.
- Example 2 solidification of oily substance / gelled substance
- Example 2 solidification of oily substance / gelled substance
- Example 2 solidification of oily substance / gelled substance
- Example 2 solidification of oily substance / gelled substance
- Example 1 solid precipitation
- Example 2 solidification of oil / gel
- solid oxidized glutathione salt is obtained by ordinary solid-liquid separation operations such as pressure filtration, centrifugation, centrifugal sedimentation, and decantation. What is necessary is just to isolate
- the separated solid oxidized glutathione salt can be further subjected to a normal drying operation such as drying under reduced pressure or drying by blowing as required. Further, the oxidized glutathione salt is purified by re-dissolving the solid oxidized glutathione salt in the aqueous medium and solidifying again (recrystallization, reaggregation, etc.) under the same heat treatment conditions as described above. Also good.
- Example 3 includes a method using spray drying. That is, it is possible to obtain an oxidized glutathione salt solid by spraying the first mixed liquid or the second mixed liquid into a high-temperature gas and distilling off the solvent while heating the mixed liquid to a temperature of 30 ° C. or higher. Can do.
- the above process may be optimized as appropriate according to the type of cation-generating substance.
- a water-soluble medium poor solvent
- the addition time of the water-soluble medium is not particularly limited. For example, it can be usually performed for 5 minutes or more, preferably 10 minutes or more, and considering productivity, it is 30 hours or less, preferably 20 hours or less, especially 10 hours or less. Can be done.
- the oxidized glutathione salt can be obtained as a solid.
- the acquisition amount as a solid is, for example, 80% by mass or more, preferably 90% by mass or more, and more preferably 95% by mass or more with respect to the charged oxidized glutathione.
- the oxidized glutathione salt obtained as described above is composed of at least one cation selected from ammonium cation, calcium cation, and magnesium cation, and oxidized glutathione, and is solid at room temperature (for example, 25 ° C.). The state can be maintained.
- the amount ratio between the cation and oxidized glutathione is appropriately set according to the valence of the cation.
- the ratio of n 1 ⁇ C 1 to G (the former / the latter) is, for example, about 0.5 to 4 Preferably, it is about 0.7 to 3, more preferably about 1 to 2.
- the sum of the products of the molar amount of each cation (C 1 , C 2 , C 3 ,...)
- the valence of each cation (n 1 , n 2 , n 3 . n 1 ⁇ C 1 + n 2 ⁇ C 2 + n 3 ⁇ C 3 +...) and the molar amount G of glutathione (the former / the latter) is recommended to be within the above range.
- the molar ratio of ammonia to oxidized glutathione is preferably 1 to 4, more preferably 1 to 3, still more preferably 1 to 2, and particularly preferably 1.
- the molar ratio of calcium or magnesium to oxidized glutathione is preferably 0.5 to 2, more preferably 0.5 to 1.5, and 5 to 1 is more preferable, and 0.5 or 1 is particularly preferable.
- the above solid oxidized glutathione salt has low deliquescence and high water solubility.
- the deliquescent nature of solid oxidized glutathione is determined by visually observing whether or not deliquescence starts when the salt powder is left in an atmosphere of a temperature of 25 ° C., a normal pressure (eg, 1 atm), and a relative humidity of 75% RH. Can be evaluated.
- the oxidized glutathione of the present invention does not start to deliquesce when left under the above conditions, for example, for 2 hours, preferably 10 hours, more preferably 24 hours.
- the solubility of the solid oxidized glutathione salt of the present invention in water is calculated by the following formula, and is, for example, 10% by mass or more, preferably 20% by mass or more, and more preferably 30% by mass or more.
- the upper limit of the solubility is not particularly limited, but may be, for example, about 80% by mass or less, particularly about 60% by mass or less.
- Solubility (%) mass of dissolved oxidized glutathione / (mass of water + mass of dissolved oxidized glutathione) ⁇ 100
- the solid oxidized glutathione salt of the present invention is also characterized in that it can maintain a solid state even after being subjected to mechanical impact.
- the above solid oxidized glutathione salt may be crystalline or amorphous. Moreover, various forms, such as a powder and a granular material, can be taken. If necessary, it can be crushed and pulverized, processed into nanoparticles, or encapsulated. Further, regardless of the content, it may contain water or a solvent, and may be hydrated or solvated (preferably anhydrate or solvate, particularly preferably an anhydride or solventless. is there).
- the solid oxidized glutathione salt of the present invention has low deliquescence and high water solubility, it can be suitably used as a water-soluble powder.
- the size of the powder is preferably 1 cm or less, more preferably 1 mm or less, and particularly preferably 0.1 mm or less. All powders may be dissolved in water, or may be provided with sustained release so as to partially dissolve.
- the powder of oxidized glutathione salt contains 0.01% by mass or more, preferably 0.1% by mass or more, more preferably 1% by mass or more, and particularly preferably 3% by mass or more of oxidized glutathione.
- the oxidized glutathione powder can contain excipients, lubricants, binders, and disintegrants as other components.
- Excipients include inorganic substances such as clay; organic substances such as saccharides, sugar alcohols and polysaccharides.
- saccharide include lactose, sucrose, maltose, trehalose and the like.
- sugar alcohol include mannitol, reduced malt syrup, reduced palatinose, maltitol, maltol, lactitol, xylitol, sorbitol, erythritol and the like.
- polysaccharides include ⁇ -cyclodextrin and crystalline cellulose. The excipient can be arbitrarily selected from one or a combination of two or more.
- lubricant examples include sucrose fatty ester, glycerin fatty acid ester, magnesium stearate, calcium stearate, sodium stearyl fumarate, talc, sodium lauryl sulfate, and light anhydrous silicon. These lubricants can be arbitrarily selected from one or a combination of two or more.
- binder examples include methyl cellulose, ethyl cellulose, carboxymethyl cellulose, polyvinyl pyrrolidone, pullulan, acrylic acid polymer, polyvinyl alcohol, gelatin, agar, gum arabic, gum arabic powder, xanthan gum, tran gum, guar gum, duran gum, locust bean gum. , Partially pregelatinized starch, macrogol and the like. These binders can be arbitrarily selected from one or a combination of two or more.
- disintegrants examples include corn starch, potato starch, carboxymethyl cellulose, carboxymethyl cellulose calcium, sodium carboxymethyl cellulose, crospovidone, croscarmellose sodium, and sodium starch glycolate. These disintegrating agents can be arbitrarily selected from one or a combination of two or more.
- the solid oxidized glutathione salt of the present invention can be suitably used as a solution (particularly a solution) by dissolving or dispersing (particularly dissolving) in water or a water-containing organic solvent.
- the organic solvent used in this solution is not particularly limited, but the higher the solubility of the solid oxidized glutathione salt, the better.
- alcohols such as methanol, ethanol, n-propanol, butanol, isopropanol, ethylene glycol, glycerin, etc.
- Ketones such as acetone, methyl ethyl ketone and diethyl ketone; aldehydes such as formaldehyde, acetaldehyde and formalin; esters such as ethyl acetate; hydrocarbons such as cyclohexane and toluene; sulfoxides such as dimethyl sulfoxide; ethers such as tetrahydrofuran are preferable, and alcohols, ketones, aldehydes, esters, and hydrocarbons are particularly preferable. These organic solvents may be used alone or in combination of two or more at any ratio.
- the concentration of oxidized glutathione in the liquid is appropriately set depending on the application, but is, for example, 0.001% by mass or more, preferably 0.01% by mass or more, and particularly preferably 0.1% by mass or more. Considering transportation and distribution, 10% by mass or more is particularly preferable.
- the upper limit is saturation solubility, and the concentration can be selected according to the application.
- HPLC HPLC condition-1 Quantification of oxidized glutathione
- Detector UV detector (wavelength 210 nm)
- HPLC condition-2 Quantification of cations
- the mixture was cooled to room temperature, and the solid was collected by filtration.
- a solid was precipitated. After maintaining at a temperature of 30 ° C. for 30 minutes, the mixture was cooled to room temperature, and the solid was collected by filtration.
- Oxidized glutathione anhydrate prepared by the method of Reference Example 1 of WO2003 / 035674 pamphlet (Patent Document 3)
- Oxidized glutathione monohydrate prepared by the method of Example 1 of WO2003 / 035674 pamphlet (Patent Document 3) and confirmed by powder X-ray diffraction
- Oxidized glutathione disodium salt manufactured by SIGMA-ALDRICH (2) Deliquescent
- the solid oxidized glutathione salt powder obtained in each of the above Examples was allowed to stand in an atmosphere of a temperature of 25 ° C., a normal pressure, and a relative humidity of 75% RH.
- the conventional solid oxidized glutathione (control) has either high deliquescence or low water solubility, and can achieve both high water solubility and low deliquescence. Can not.
- the solid oxidized glutathione salt of the above example can achieve both high water solubility and low deliquescence.
- the oxidized glutathione salt of the present invention is useful as health foods, pharmaceuticals, cosmetics, fertilizers, etc., or as an intermediate for producing them.
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Abstract
Description
また本発明によれば、特定のカチオンによって酸化型グルタチオンの塩を形成しているため、低潮解性であって取り扱いが容易でありながら、高水溶性であり、かつ使用の制約が少ない固体状酸化型グルタチオンを提供することができる。
また本発明では、必要に応じて酸を用いてもよい。例えば、酸化型グルタチオンに対して過剰になるカチオン生成物質を使用した場合には、その後、不要のカチオン生成物質を酸で中和してもよい。使用可能な酸は特に制限されないが、コスト面や、除去の容易性を考慮すると、塩酸や硫酸などの鉱酸が好ましい。
尚、前記加温は、通常、常圧で実施するが、加圧下で実施してもよく、減圧下で実施してもよい。
前記好ましい操作手順において、温度30℃以上に加温するタイミングは適宜設定でき、第1混合前、第1混合中、第1混合後であって第2混合前、第2混合中、第2混合後のいずれであってもよいが、遅くとも第2混合を開始する前に温度30℃以上に加温し、以後、この加温温度を維持するのが最も好ましい。
なお例1(固体析出)の場合、必要に応じて種晶を加えて、酸化型グルタチオン塩の固化を促進してもよい。
以上の様にして得られる酸化型グルタチオン塩は、アンモニウムカチオン、カルシウムカチオン、及びマグネシウムカチオンから選択される少なくとも一種のカチオンと、酸化型グルタチオンとから構成されており、室温(例えば25℃)で固体状を維持可能である。なおカチオンと酸化型グルタチオンの量比は、カチオンの価数に応じて適宜設定される。カチオンのモル量をC1、カチオンの価数をn1とし、グルタチオンのモル量をGとすると、n1×C1とGの比(前者/後者)は、例えば、0.5~4程度、好ましくは0.7~3程度、さらに好ましくは1~2程度である。なお異なるカチオンが複数存在する場合には、各カチオンのモル量(C1、C2、C3、…)と各カチオンの価数(n1、n2、n3…)の積の和(n1×C1+n2×C2+n3×C3+…)とグルタチオンのモル量Gの比(前者/後者)が前記範囲に入る様にすることが推奨される。
溶解度(%)=溶解酸化型グルタチオンの質量/(水の質量+溶解酸化型グルタチオンの質量)×100
尚、実施例中、酸化型グルタチオンの定量及びカチオン種の定量は、HPLCを用いて行い、その条件は下記HPLC条件-1、2の通りとした。また実施例で得られた固体状酸化型グルタチオン塩の結晶解析、融点測定、及び元素分析には、下記の装置を使用した。
HPLC条件-1(酸化型グルタチオンの定量)
カラム:株式会社ワイエムシィ製「YMC-Pack ODS A」(長さ150mm×内径4.6mm)
カラム温度:40℃
検出器:UV検出器(波長210nm)
HPLC条件-2(カチオンの定量)
カラム:株式会社島津製作所製「SHIMADZU Shim-pack(登録商標)IC-C3」(長さ100mm×内径4.6mm)
カラム温度:40℃
検出器:電気伝導度検出器
2)結晶解析
粉末X線回析装置(株式会社リガク製「Mini FlexII」)
3)融点測定
融点測定器(スタンフォード リサーチ システムズ(SRS)社製 OptiMelt MPA100)
測定条件 加熱速度 1.0℃/分
4)元素分析
元素分析装置(エレメンタール社製「vario MICRO cube」)
燃焼管温度:1150℃
還元管温度:850℃
酸化型グルタチオン5g(8.2mmol)を水25gに溶解して酸化型グルタチオン含有水溶液30gを調製し、さらに25%アンモニア水溶液0.56g(8.2mmol:対グルタチオンモル比=1)を添加した。この水溶液(pH=3.5)の温度を室温(25℃)に維持しながら、エタノール90ml(対水溶液容量比=3)を30分かけて添加したところ、油状物が混合液から分離した。
前記エタノール添加液を30℃に加温したところ、油状物が固化した。そのまま温度30℃で15分保持した。室温まで冷却後、固体を濾取し、減圧乾燥して酸化型グルタチオン・1アンモニウム塩3.5g(含量:95質量%)を得た。
融点範囲:170-176℃(融解と共に分解)
非晶質固体(粉末X線回折にて確認)
酸化型グルタチオン3g(4.9mmol)を水7gに溶解して酸化型グルタチオン含有水溶液10gを調製し、さらに25%アンモニア水溶液0.33g(4.9mmol:対グルタチオンモル比=1)を添加した。この水溶液(pH=3.5)を40℃に加温し、メタノール20ml(対水溶液容量比=2)を1時間かけて添加したところ、固体が析出した。温度40℃で30分保持した後、室温まで冷却し、固体を濾取した。濾取した固体を減圧乾燥して酸化型グルタチオン・1アンモニウム塩2.9g(含量:99質量%)を得た。
融点範囲:179-183℃(融解と共に分解)
結晶性固体
粉末X線回折[回折角(2θ°)、( )は相対強度を示す]:
6.02(25), 17.4(46), 17.4(53), 17.6(72), 17.9(62), 18.7(22), 18.8(23), 18.9(21), 20.0(40), 20.2(60), 20.2(62), 21.1(42), 21.4(100), 21.9(76), 22.8(29), 22.8(29), 23(44), 23.4(96), 23.6(76), 24.7(50), 26.2(34), 28.0(27), 28.2(23), 30.8(28), 30.9(24), 35.6(34), 35.7(37), 35.8(34), 35.9(26)
元素分析
分子式 :C20H34N7O12S2
分子量 :630.7
理論値 :[N]16%、[C]38%、[S]10%
分析結果:[N]15%、[C]38%、[S]10%
酸化型グルタチオン3g(4.9mmol)を水7gに溶解して酸化型グルタチオン含有水溶液10gを調製し、さらに25%アンモニア水溶液0.33g(4.9mmol:対グルタチオンモル比=1)を添加した。この水溶液(pH=3.5)を40℃に加温し、イソプロパノール30ml(対水溶液容量比=3)を1時間かけて添加したところ、固体が析出した。温度40℃で30分保持した後、室温まで冷却し、固体を濾取した。濾取した固体を減圧乾燥して酸化型グルタチオン・1アンモニウム塩2.9g(含量:96質量%)を得た。
融点、X線回折、元素分析の結果は、実施例2記載の酸化型グルタチオン・1アンモニウム塩と同じであった。
酸化型グルタチオン3g(4.9mmol)を水7gに溶解して酸化型グルタチオン含有水溶液10gを調製し、さらに25%アンモニア水溶液0.66g(9.6mmol:対グルタチオンモル比=2)を添加した。そして、この水溶液(pH=4.8)を40℃に加温し、メタノール20ml(対水溶液容量比=2)を1時間かけて添加したところ、固体が析出した。温度40℃で30分保持した後、室温まで冷却し、固体を濾取した。濾取した固体を減圧乾燥して酸化型グルタチオン・1アンモニウム塩2.9g(含量95質量%)を得た。
融点、X線回折、元素分析の結果は、実施例2記載の酸化型グルタチオン・1アンモニウム塩と同じであった。
酸化型グルタチオン3g(4.9mmol)を水7gに溶解して酸化型グルタチオン含有水溶液10gを調製し、さらに水酸化カルシウム0.36g(4.9mmol:対グルタチオンモル比=1)を添加した。温度40℃に加温したメタノール100ml(対水溶液容量比=約10)に、前記水溶液(pH=5.3)を1時間かけて添加したところ、固体が析出した。温度40℃で30分保持した後、室温まで冷却し、固体を濾取した。濾取した固体を減圧乾燥して酸化型グルタチオン・1カルシウム塩2.9g(含量:98質量%)を得た。
融点範囲:194-205℃(融解と共に分解)
非晶質固体(粉末X線回折にて確認)
酸化型グルタチオン3g(4.9mmol)を水7gに溶解して酸化型グルタチオン含有水溶液10gを調製し、さらに水酸化カルシウム0.18g(2.5mmol:対グルタチオンモル比=0.5)を添加した。温度40℃に加温したメタノール100ml(対水溶液容量比=約10)に、前記水溶液(pH=3.4)を1時間かけて添加したところ、固体が析出した。温度40℃で30分保持した後、室温まで冷却し、固体を濾取した。濾取した固体を減圧乾燥して酸化型グルタチオン・0.5カルシウム塩2.9g(含量:97質量%)を得た。
融点範囲:188-195℃(融解と共に分解)
非晶質固体(粉末X線回折にて確認)
元素分析
分子式 :C20H30N6O12S2Ca0.5
分子量 :631.7
理論値 :[N]13%、[C]38%、[S]10%
分析結果:[N]13%、[C]39%、[S]10%
酸化型グルタチオン5g(8.2mmol)を水25gに溶解して酸化型グルタチオン含有水溶液30gを調製し、さらに水酸化マグネシウム0.48g(8.2mmol:対グルタチオンモル比=1)を添加した。温度25℃のメタノール100ml(対水溶液容量比=3.5)に、前記水溶液(pH=4.7)を30分かけて添加したところ、ゲル状の沈殿物が得られた。デカンテーションによって上清を除去した後、温度50℃に加熱しながら残留物を6時間かけて減圧乾燥すると、酸化型グルタチオン・1マグネシウム塩5.0g(含量:95質量%)が得られた。
融点範囲:186-197℃(融解と共に分解)
非晶質固体(粉末X線回折にて確認)
酸化型グルタチオン5g(8.2mmol)を水25gに溶解して酸化型グルタチオン含有水溶液30gを調製し、さらに水酸化マグネシウム0.24g(4.1mmol:対グルタチオンモル比=0.5)を添加した。温度40℃に加温したメタノール100ml(対水溶液容量比=3.5)に、前記水溶液(pH=3.4)を1時間かけて添加したところ、固体が析出した。温度30℃で30分保持した後、室温まで冷却し、固体を濾取した。濾取した固体を減圧乾燥し酸化型グルタチオン・0.5マグネシウム塩4.8g(含量:98質量%)を得た。
融点範囲:179-186℃(融解と共に分解)
非晶質固体(粉末X線回折にて確認)
還元型グルタチオン20g(65mmol)を水180gに溶解して還元型グルタチオン含有水溶液200gを調製した。この液に25%アンモニア水溶液4.4g(65mmol:対グルタチオンモル比=1)添加してpHを7.8にした後、空気雰囲気下で攪拌することで還元型グルタチオンを酸化した。この水溶液に35%塩酸3.4g(33mmol)を添加した後(pH=3.5)、温度40℃に加温し、メタノール400ml(対水溶液容量比=2)を1時間かけて添加したところ、固体が析出した。温度40℃で30分保持した後、室温まで冷却し、固体を濾取した。濾取した固体を減圧乾燥し酸化型グルタチオン・1アンモニウム塩19.6g(含量:96質量%)を得た。
融点、X線回折、元素分析の結果は、実施例2記載の酸化型グルタチオン・1アンモニウム塩と同じであった。
酸化型グルタチオン3.5kg(5.7mol)を水14kgに溶解して酸化型グルタチオン含有水溶液を調製し、さらに25%アンモニア水溶液0.39kg(5.7mol:対グルタチオンモル比=1)を添加した。この水溶液(pH=3.5)を60℃に加温し、撹拌所要動力1kw/m3で撹拌しながら、メタノール17.5kg(21L、対水溶液容量比=1.3)を1時間かけて添加したところ、固体が析出した。撹拌を続けながら温度60℃で2時間保持した後、室温まで冷却し、固体を濾取した。濾取した固体を減圧乾燥して酸化型グルタチオン・1アンモニウム塩3.6kg(収率99%)を得た。
融点、X線回折、元素分析の結果は、実施例2記載の酸化型グルタチオン・1アンモニウム塩と同じであった。
酸化型グルタチオン3.5kg(5.7mol)を水14kgに溶解して酸化型グルタチオン含有水溶液を調製し、さらに25%アンモニア水溶液0.39kg(5.7mol:対グルタチオンモル比=1)を添加した。この水溶液(pH=3.5)を50℃に加温し、撹拌所要動力1kw/m3で撹拌しながら、メタノール17.5kg(21L、対水溶液容量比=1.3)を1時間かけて添加したところ、固体が析出した。撹拌を続けながら温度50℃で2時間保持した後、室温まで冷却し、固体を濾取した。濾取した固体を減圧乾燥して酸化型グルタチオン・1アンモニウム塩3.6kg(収率99%)を得た。
融点、X線回折、元素分析の結果は、実施例2記載の酸化型グルタチオン・1アンモニウム塩と同じであった。
酸化型グルタチオン3.5kg(5.7mol)を水14kgに溶解して酸化型グルタチオン含有水溶液を調製し、さらに25%アンモニア水溶液0.39kg(5.7mol:対グルタチオンモル比=1)を添加した。この水溶液(pH=3.5)を45℃に加温し、撹拌所要動力1kw/m3で撹拌しながら、メタノール17.5kg(21L、対水溶液容量比=1.3)を1時間かけて添加したところ、固体と油状物の混合物が析出し、乳化状態となった。そのまま、45℃で1時間保持したところ油状物は全て固化した。その後、室温まで冷却し、得られた固体を濾取して融点、X線回折を行った結果、酸化型グルタチオン・1アンモニウム塩であることが確認された。
酸化型グルタチオン5g(8.2mmol)を水25gに溶解して酸化型グルタチオン含有水溶液30gを調製し、さらに25%アンモニア水溶液0.56g(8.2mmol:対グルタチオンモル比=1)を添加した。この水溶液を凍結乾燥することで、酸化型グルタチオン・1アンモニウム塩の固体を取得しようとしたが、得られた酸化型グルタチオン・1アンモニウム塩はすぐに油状化し、固体として取り扱える様なものではなかった。
酸化型グルタチオン3g(4.9mmol)を水7gに溶解して酸化型グルタチオン含有水溶液10gを調製し、さらに25%アンモニア水溶液0.33g(4.9mmol:対グルタチオンモル比=1)を添加した。この水溶液の温度を室温(25℃)に維持しながら、メタノール20ml(対水溶液容量比=2)を2時間かけて添加したところ、油状物が沈降し、固形物は得られなかった。
酸化型グルタチオン3g(4.9mmol)を水7gに溶解して酸化型グルタチオン含有水溶液10gを調製し、さらに水酸化ナトリウム0.39g(9.8mmol:対グルタチオンモル比=1)を添加した。この水溶液を40℃に加温し、メタノール60ml(対水溶液容量比=6)を1時間かけて添加したところ、油状物が沈降し、固形物は得られなかった。
(1)溶解度
上記各実施例で得られた固体状の各酸化型グルタチオン塩の粉末を水に溶解しなくなるまで添加した。各スラリーを30分以上攪拌した後、上清を取得し、HPLCにより、各酸化型グルタチオンおよび塩の濃度を算出した。なお比較として、公知の以下の固体状酸化型グルタチオン類の溶解度も同様にして調べた。
酸化型グルタチオン無水和物(国際公開第2003/035674号パンフレット(特許文献3)の参考例1の方法で調製)
酸化型グルタチオン1水和物(国際公開第2003/035674号パンフレット(特許文献3)の実施例1の方法で調製し、粉末X線回折により確認したもの)
酸化型グルタチオン・2ナトリウム塩(SIGMA-ALDORICH製)
(2)潮解性
上記各実施例で得られた固体状の各酸化型グルタチオン塩の粉末を温度25℃、常圧、相対湿度75%RHの雰囲気下で放置した。2時間後又は24時間後に、形状の変化の有無を目視で観察することで、潮解性の有無を調べた。なお比較として、市販されている上記固体状酸化型グルタチオン類の潮解性も同様にして調べた。
結果を表1に示す。
Claims (12)
- アンモニウムカチオン、カルシウムカチオン、及びマグネシウムカチオンから選択される少なくとも一種のカチオンを生成し得る物質の存在下、水及び/又は水可溶性媒体から構成される水性媒体と接触させながら酸化型グルタチオンを温度30℃以上に加温することによって、前記酸化型グルタチオンと前記カチオンとの塩を固体として生成させることを特徴とする固体状酸化型グルタチオン塩の製造方法。
- 前記温度30℃以上での加温時間が0.25時間以上である請求項1に記載の製造方法。
- 前記水可溶性媒体が、アルコール類及びケトン類から選択される少なくとも一種である請求項1又は2に記載の製造方法。
- 前記アルコール類がメタノール、エタノール、プロパノール、及びブタノールから選択される少なくとも一種であり、前記ケトン類がアセトン及びメチルエチルケトンから選択される少なくとも一種である請求項3に記載の製造方法。
- アンモニウムカチオン、カルシウムカチオン、及びマグネシウムカチオンから選択される少なくとも一種のカチオンと、酸化型グルタチオンとから構成される酸化型グルタチオン塩であって、室温で固体であることを特徴とする固体状酸化型グルタチオン塩。
- 温度25℃、常圧、相対湿度75%RHの条件で2時間以上保管しても潮解が始まらず、かつ機械的衝撃を受けた後でも固体状を維持可能である請求項5に記載の固体状酸化型グルタチオン塩。
- 酸化型グルタチオンの1アンモニウム塩である請求項5又は6に記載の固体状酸化型グルタチオン塩。
- 酸化型グルタチオンの0.5カルシウム塩又は1カルシウム塩である請求項5又は6に記載の固体状酸化型グルタチオン塩。
- 酸化型グルタチオンの0.5マグネシウム塩又は1マグネシウム塩である請求項5又は6に記載の固体状酸化型グルタチオン塩。
- 請求項5~9のいずれかに記載の固体状酸化型グルタチオン塩を含有する粉末剤であって、酸化型グルタチオンを0.01質量%以上含有することを特徴とする粉末剤。
- 請求項5~9のいずれかに記載の固体状酸化型グルタチオン塩を、水又は含水有機溶媒に溶解又は分散させたことを特徴とする液剤。
- 前記有機溶媒が、アルコール類、ケトン類、アルデヒド類、エステル類、炭化水素類、スルホキシド類、及びエーテル類から選択される少なくとも一種である請求項11に記載の液剤。
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WO2018225790A1 (ja) | 2017-06-08 | 2018-12-13 | 協和発酵バイオ株式会社 | 酸化型グルタチオン・二カチオン塩の結晶及びその製造方法 |
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