WO2021177397A1 - L-エルゴチオネイン含有組成物 - Google Patents
L-エルゴチオネイン含有組成物 Download PDFInfo
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- WO2021177397A1 WO2021177397A1 PCT/JP2021/008388 JP2021008388W WO2021177397A1 WO 2021177397 A1 WO2021177397 A1 WO 2021177397A1 JP 2021008388 W JP2021008388 W JP 2021008388W WO 2021177397 A1 WO2021177397 A1 WO 2021177397A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/4164—1,3-Diazoles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/18—Antioxidants, e.g. antiradicals
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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 OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- 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
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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 OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- 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
- A23L33/175—Amino acids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/4164—1,3-Diazoles
- A61K31/4172—Imidazole-alkanecarboxylic acids, e.g. histidine
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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
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/494—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom
- A61K8/4946—Imidazoles or their condensed derivatives, e.g. benzimidazoles
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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
- A61P39/06—Free radical scavengers or antioxidants
-
- 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
-
- 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
- A61Q19/08—Anti-ageing preparations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/52—Stabilizers
- A61K2800/522—Antioxidants; Radical scavengers
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Definitions
- the present invention relates to a composition containing L-ergothioneine (EGT). More specifically, the present invention relates to a composition having enhanced stability of L-ergothioneine (EGT) in the presence of N, N-dimethyl-L-2-thiohistidine (DTH), and a method for producing the same.
- ETT L-ergothioneine
- L-ergothioneine (sometimes referred to as "EGT" in this specification) is a kind of sulfur-containing amino acid, and is known to have various physiological activities including antioxidant ability.
- Non-Patent Document 1 describes that EGT has an action of improving the effect of immunotherapy with a cancer vaccine consisting of a tumor-related antigen (TAA) and an adjuvant.
- Patent Document 1 describes that EGT has an action of treating a bacterial infection.
- TAA tumor-related antigen
- Patent Document 1 it was confirmed that 5 mM and 50 mM EGT suppressed the growth of Escherichia coli. Therefore, in the suppression of bacterial infection described in Patent Document 1, EGT directly suppresses the growth of bacteria. It can be understood that it is due to suppression.
- Non-Patent Document 2 production of cytokines (IL-6, IL-12p40, IL-1 ⁇ , IL-10) by mouse bone marrow-derived macrophages under stimulation conditions with tall-like receptor ligands is promoted by 10 mM EGT. It is not promoted by 1 mM EGT, and Th17 polarization of OT-II CD4 + T cells is promoted by 30 mM EGT in co-culture of F4 / 80 macrophages and OT-II CD4 + T cells. Have been described. As described above, Non-Patent Document 2 describes that a high concentration of EGT of 10 mM or more activates macrophages.
- Non-Patent Document 3 is a review article on the physiological activity of EGT.
- Non-Patent Document 3 describes that EGT is absorbed and accumulated in the bodies of animals and plants.
- the present invention provides the compositions listed below.
- composition containing L-ergothioneine and N, N-dimethyl-L-2-thiohistidine A composition in which the content of the N, N-dimethyl-L-2-thiohistidine is reduced.
- the content of the N, N-dimethyl-L-2-thiohistidine is 0.0001 parts by mass or more with respect to 100 parts by mass of the L-ergothioneine.
- the content of the N, N-dimethyl-L-2-thiohistidine is 0.05 parts by mass or more with respect to 100 parts by mass of the L-ergothioneine.
- a composition containing L-ergothioneine and N, N-dimethyl-L-2-thiohistidine The content of the N, N-dimethyl-L-2-thiohistidine is 50 parts by mass or less with respect to 100 parts by mass of the L-ergothioneine.
- a composition for suppressing coloring of the composition is 50 parts by mass or less with respect to 100 parts by mass of the L-ergothioneine.
- the present invention also relates to the following manufacturing methods.
- a method for producing a composition containing L-ergothioneine and N, N-dimethyl-L-2-thiohistidine and suppressing coloration comprising a step of reducing the content of the N, N-dimethyl-L-2-thiohistidine.
- the present invention also relates to the methods listed below.
- a composition containing L-ergothioneine and N, N-dimethyl-L-2-thiohistidine By setting the content of the N, N-dimethyl-L-2-thiohistidine to 50 parts by mass or less with respect to 100 parts by mass of the L-ergothioneine.
- a method for imparting a coloring suppressing effect to the composition By setting the content of the N, N-dimethyl-L-2-thiohistidine to 50 parts by mass or less with respect to 100 parts by mass of the L-ergothioneine.
- DTH was found as a component that affects the stability of EGT, in the composition in which EGT and DTH coexist, the content of DTH is reduced to improve the stability of the formulation, and the composition. It is possible to suppress coloring.
- FIG. 1 is a graph showing the stability evaluation results of the composition containing EGT and DTH in Test Example 1.
- FIG. 2 is a graph showing the results of a color suppression test of a composition containing EGT and DTH in Test Example 2.
- FIG. 3 is a graph showing the results of a color suppression test of a composition containing EGT and DTH in Test Example 2.
- FIG. 4 is a graph showing the results of a DTH reduction test in the EGT fermentation method in Test Example 3.
- FIG. 5 is a graph showing the results of a DTH reduction test in the EGT fermentation method in Test Example 3.
- composition of the present invention contains L-ergothioneine (EGT) and N, N-dimethyl-L-2-thiohistidine (DTH), and the content of DTH is reduced.
- ETT L-ergothioneine
- DTH N, N-dimethyl-L-2-thiohistidine
- EGT is a histidine derivative (N, N, N-trimethyl-L-2-thiohistidine), and its structure is represented by the following formula (1).
- EGT can be obtained by a known method such as a synthetic method, an extraction method, a fermentation method, or a commercially available product can be obtained and used.
- EGT products examples include L-ergothioneine (manufactured by Tetraedron).
- DTH N-dimethyl-L-2-thiohistidine
- DTH can be obtained by a known method such as a synthetic method, an extraction method, a fermentation method, or a commercially available product can be obtained and used.
- DTH products examples include N, N-dimethyl-L-2-thiohistidine (manufactured by Tetraedron) and the like.
- EGT and / or DTH may be in the form of a free form or in the form of a salt.
- the salt of EGT and / or DTH may be a salt formed of a carboxyl group in these structures, or may be a salt formed of a trimethylamino group or a dimethylamino group.
- the L-ergothioneine or the L-ergothioneine analog may be a solvate such as a hydrate.
- the EGT and / or DTH salt is not particularly limited as long as it is a pharmacologically or physiologically acceptable salt, but specifically, an organic acid salt, an inorganic acid salt, a salt with an organic base, etc. Alternatively, a salt with an inorganic base can be mentioned.
- the organic acid salt include monocarboxylic acid salts such as acetate, trifluoroacetate, butyrate, palmitate, and stearate; fumarate, maleate, succinate, malonate, and the like.
- Polyvalent carboxylates such as lactates, tartrates and citrates; organic sulfonates such as methanesulfonates, toluenesulfonates and tosylates are exemplified.
- examples of the inorganic acid salt include hydrochloride, sulfate, nitrate, hydrobromide, and phosphate.
- Examples of the salt with an organic base include salts with organic amines such as methylamine, triethylamine, triethanolamine, diethanolamine, morpholine, piperazine, pyrrolidine, and ethylenediamine.
- the salt with an inorganic base examples include various salts such as an alkali metal such as sodium or potassium, an alkaline earth metal such as calcium or magnesium, and a salt with a metal such as aluminum.
- EGT and / or DTH salts may be used alone or in any combination of two or more.
- the "pharmaceutically or physiologically acceptable salt” may include a solvate or hydrate of the salt.
- the present inventors have said that in the composition containing EGT, when DTH coexists, the EGT becomes unstable, and the composition containing the EGT is colored accordingly.
- the present inventors have found that in a composition containing EGT and DTH, by reducing the content of DTH, the stability of EGT can be enhanced and the coloring of the composition can be suppressed.
- the mode in which DTH coexists in the composition containing EGT is not particularly limited, and for example, DTH may be added to the composition containing EGT, and impurities in the extraction method, a synthetic method, a fermentation method, etc. It may be contained endogenously due to a by-product or the like in.
- the fact that coloring is suppressed means that the absorbance at 400 nm is obtained by reducing the DTH content under the same pH conditions with respect to the composition containing EGT and DTH in equal amounts.
- the reduction in absorbance at 400 nm can be determined using a known spectrophotometer.
- the reduction of the absorbance at 400 nm is preferably at least 5% reduction rate, more preferably at least 10% reduction rate, for example, with respect to the composition containing equal amounts of EGT and DTH.
- the content ratio of EGT and DTH is such that the content of DTH is 50 parts by mass or less with respect to 100 parts by mass of EGT from the viewpoint of suppressing coloration of the composition and the stability of EGT. It is preferably 40 parts by mass or less, more preferably 30 parts by mass or less, particularly preferably 20 parts by mass or less, and most preferably 10 parts by mass or less.
- the content ratio of EGT and DTH is such that the content of DTH is 0.0001 parts by mass or more with respect to 100 parts by mass of EGT from the viewpoint of production efficiency of the composition. It is preferably 0.001 part by mass or more, more preferably 0.005 part by mass or more, particularly preferably 0.01 part by mass or more, and 0.05 part by mass or more. Is the most preferable.
- the content ratio of EGT and DTH is based on 100 parts by mass of EGT from the viewpoint of suppressing coloration of the composition, the stability of EGT, the production efficiency of the composition and the like.
- the content of DTH is preferably 0.0001 to 50 parts by mass, more preferably 0.001 to 40 parts by mass, further preferably 0.005 to 30 parts by mass, and 0. It is particularly preferably 01 to 20 parts by mass, and most preferably 0.05 to 10 parts by mass.
- the content of EGT is appropriately adjusted and limited depending on the form and use of the preparation, the type and content of other components, and the like, but is not limited, for example, with respect to the total amount of the composition. It can be 0.000001 mass% or more, 0.000005 mass% or more, 0.00001 mass% or more, 0.00005 mass% or more, 0.0001 mass% or more, 0.0005 mass% or more, 0.001. Mass% or more can be mentioned. Further, the content of EGT can be, for example, 99.999% by mass or less, 99.9% by mass or less, 99.5% by mass or less, 99% by mass or less, 98. Examples thereof include 5% by mass or less and 98% by mass or less.
- the EGT content when prepared as a liquid formulation, can be, for example, 80% by weight or less, 70% by weight or less, 60% or less, based on the total amount of the composition, without limitation. Examples thereof include mass% or less, 50% by mass or less, 40% by mass or less, 30% by mass or less, 20% by mass or less, 10% by mass or less, 5% by mass or less, and 1% by mass or less.
- EGT is known to have various physiological activities including antioxidant ability. Even in a composition containing EGT and DTH, by using the present invention, the stability of EGT can be enhanced and its decomposition can be suppressed, so that the composition can be exhibited without impairing the bioactivity inherent in EGT. It becomes.
- the physiological activities inherent in EGT such as for antioxidant, for improving brain function, for anti-aging, for eye diseases, for whitening, and for absorbing ultraviolet rays, are used.
- For suppressing melanin production for eliminating active oxygen species, for inhibiting elastase activity, for suppressing wrinkle formation, for suppressing skin sagging, for suppressing skin stain formation, for suppressing bears around the eyes, reducing skin damage caused by ultraviolet rays ( It can be suitably used for (suppression of photoaging), for dry skin, for sensitive skin, for improving hair, for promoting autophagy, and the like.
- composition of the present invention can further appropriately contain active ingredients and additives that can be used in foods and drinks, foods with functional claims, foods for specified health use, quasi-drugs, pharmaceuticals, cosmetics, daily necessities, feeds and the like.
- active ingredients and additives that can be used in foods and drinks, foods with functional claims, foods for specified health use, quasi-drugs, pharmaceuticals, cosmetics, daily necessities, feeds and the like.
- it can be appropriately formulated by a known formulation method used for the product.
- Cosmetics and daily necessities include, for example, lotion, milky lotion, gel, serum, cream, sunscreen cream, facial mask, mask, foundation, whitewash, bathing agent, body lotion, shampoo, conditioner, hair treatment, hair conditioner, hair styling product. , Hair tonic, toothpaste, mouthwash, etc. can be formulated.
- compositions of the present invention are, for example, solid formulations such as tablets, capsules, granules and powders; or liquids, syrups, injections, creams, lotions, pastes, ointments and emulsions (oil-in-water emulsions, water in oil). It can also be administered orally or parenterally (including external use) as a liquid formulation such as type emulsion, multiple emulsion, microemulsion, PET-emulsion, pickering emulsion), gel (hydrogel, alcohol gel), suspension, etc. can.
- Excipients lubricants, binders, disintegrants for solid formulations; solvents, solubilizers, emulsifiers, emulsion stabilizers, thickeners, moisturizers, suspending agents, isotonic for liquid formulations.
- Agents, buffers, soothing agents and the like can be used. If necessary, additives such as preservatives, antioxidants, colorants, sweeteners, and flavors can also be used.
- Excipients include, for example, sugar alcohols such as sorbitol, mannitol and xylitol, sugars such as glucose, sucrose, lactose and fructose, crystalline cellulose, sodium carmellose, sodium croscarmellose, calcium hydrogen phosphate, wheat starch and rice.
- sugar alcohols such as sorbitol, mannitol and xylitol
- sugars such as glucose, sucrose, lactose and fructose
- crystalline cellulose sodium carmellose, sodium croscarmellose, calcium hydrogen phosphate
- wheat starch and rice examples include starch, corn starch, potato starch, dextrin, ⁇ -cyclodextrin, light anhydrous silicic acid, titanium oxide, magnesium aluminometasilicate, talc, kaolin, olive oil and the like.
- binder examples include cellulose derivatives such as methyl cellulose, ethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methyl cellulose, polyvinylpyrrolidone, polyvinyl alcohol, acrylate-based polymers, gelatin, gum arabic, purulan, pregelatinized starch, canten, tragant, and the like.
- cellulose derivatives such as methyl cellulose, ethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methyl cellulose
- polyvinylpyrrolidone polyvinyl alcohol
- acrylate-based polymers examples include sodium alginate and propylene glycol alginate.
- disintegrant examples include starch, low-degree-of-substitution hydroxypropyl cellulose, carboxymethyl cellulose calcium, croscarmellose sodium, hydroxypropyl starch, and partially pregelatinized starch.
- solvent examples include water, alcohol, propylene glycol, macrogol, sesame oil, corn oil and the like.
- lubricant examples include stearic acid, magnesium stearate, calcium stearate, polyoxyl stearate, cetanol, talc, hydrogenated oil, sucrose fatty acid ester, dimethylpolysiloxane, beeswax, and salashimitsuro.
- solubilizing agent examples include polyethylene glycol, propylene glycol, mannitol, benzyl benzoate, ethanol, tris (hydroxymethyl) aminomethane, cholesterol, triethanolamine, sodium carbonate, sodium citrate and the like.
- suspending agent / emulsifier examples include surfactants such as stearylamine, triethanolamine, sodium lauryl sulfate, laurylaminopropionic acid, lecithin, benzalkonium chloride, benzethonium chloride, and glycerin monostearate; for example, polyvinyl alcohol.
- surfactants such as stearylamine, triethanolamine, sodium lauryl sulfate, laurylaminopropionic acid, lecithin, benzalkonium chloride, benzethonium chloride, and glycerin monostearate; for example, polyvinyl alcohol.
- Polypolypyrrolidone sodium carboxymethyl cellulose, methyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and other hydrophilic polymers; for example, shelac wax, beeswax, carnauba wax, whale wax, lanolin, liquid lanolin, reduced lanolin, hard lanolin, cyclic lanolin. , Lanolin wax, candelilla wax, mokurou, montan wax, rice wax and other waxes.
- tonicity agent examples include sodium chloride, glycerin, D-mannitol and the like.
- the buffer examples include a buffer solution such as phosphate, acetate, carbonate, and citrate.
- preservatives include paraoxybenzoic acid esters, chlorobutanol, benzyl alcohol, phenethyl alcohol, dehydroacetic acid, sorbic acid and the like.
- antioxidant examples include sulfites, ascorbic acid and the like.
- a production method known in the art can be used. For example, a method of crushing and sizing an extruded granule that is molded by kneading a composition and passing it through a screen, adding kneading water to the composition, and stirring granulation that is molded by a vertical granulator. After that, there is a method of crushing and sieving using a combil. Further, a method in which the pharmaceutical composition is compressed with a roller compactor, then pulverized with a roll granulator and sieved is mentioned. Further, a method of drying the fluidized bed after stirring and granulating can be mentioned. Further, for example, in the case of producing by direct striking, the composition may be mixed and then directly put into a locking machine to lock.
- the composition of the present invention can also be used as a food and drink composition, and can be provided by being contained in a food or a functional food.
- Such foods or functional foods include rice; various noodles including buckwheat, udon, harusame, Chinese noodles, instant noodles, cup noodles; soft drinks, carbonated drinks, nutritional drinks, fruit drinks, lactic acid drinks, sports drinks.
- Beverages such as: Curry roux, stew, various soups; Cold confectionery such as ice cream, ice sherbet, shaved ice; Candy, cookies, candy, gum, chocolate, tablet confectionery, snack confectionery, biscuits, jelly, jam, cream, and other baked confectionery Confectionery such as; marine and livestock processed foods such as kamaboko, hampen, ham, sausage; dairy products such as processed milk and fermented milk; Processed foods; seasonings such as sauces, dressings, miso, soy sauce, sauces; soups, stews, salads, prepared foods, sprinkles, pickles; other various forms of health / nutritional supplements / functional foods / foods for specified health use, etc. Is illustrated.
- supplements powder, granule, soft capsule, hard capsule, tablet, chewable tablet, quick-disintegrating tablet, syrup, liquid preparation, etc.
- composition of the present invention may be prepared.
- composition of the present invention can be contained in food for animals such as pets.
- Additives are added to food and drink as needed.
- Such additives include, for example, glucose, fructose, sucrose, maltose, sorbitol, trehalose, stebioside, rubusoside, corn syrup, lactose, mannitol, dextrin, citric acid, sodium citrate, tartrate, malic acid, succinic acid, etc.
- the composition of the present invention can be used for foods and drinks for which labeling such as improvement / prevention / improvement of various symptoms and conditions is permitted.
- the foods and drinks for which labeling of improvement, prevention, improvement, etc. of symptoms and conditions is permitted are foods and drinks having the effects permitted and designated by the national government and public organizations, for example.
- the blending amount of the composition of the present invention is not particularly limited, and the purpose of application (target disease, type of symptom, etc.), target site, gender and age of the applicator, foods and drinks, foods with functional claims, etc. , Foods for specified health use, quasi-drugs, pharmaceuticals, cosmetics, daily necessities, feeds, etc., and their administration or ingestion methods, frequency, preferences, etc. are appropriately set.
- the effective amount capable of exerting the physiological activity originally possessed by EGT can be set as the daily intake (applied amount).
- the daily intake (applied amount) of EGT is, for example, 0.005 to 4,000 mg, preferably 0.1 to 3,000 mg, and more preferably 0. It can be used in an amount of 5. to 2,000 mg, more preferably 1 to 1,000 mg, particularly preferably 2 to 500 mg, and most preferably 3 to 300 mg.
- composition of the present invention when used as a food or drink, it is not limited, but from the viewpoint of being able to display the physiological activity inherent in EGT, it is preferable to use a functional food, and among the functional foods, the functional food is labeled.
- the functional food is labeled.
- Foods, nutritionally functional foods, nutritional supplements, and foods for specified health use can be mentioned, but functionally labeled foods are preferable because their uses can be clearly labeled.
- composition of the present invention is not particularly limited as long as it is an age group that requires the physiological activity inherent in EGT, but is around 30 years old or older, which is an age group that is susceptible to stress from the living environment such as work. It may be a middle-aged person (around 45 years old or older and less than 55 years old) who is likely to feel a physical change due to a change in hormone balance or a change in living environment, or an elderly person (55 years old). Above).
- the pH of the composition of the present invention is appropriately set according to the type and content of other compounding ingredients, the form of the preparation, the method of use, etc., and is not limited as long as it is within a pharmaceutically or physiologically acceptable range, but for example,
- the pH can be 2 to 10.
- the pH of the composition of the present invention is, for example, pH 2 to 10, pH 2 to 9, pH 2 to 8, pH 2 to 7, pH 3 to 10, pH 3 to 9, pH 3 to. 8, pH 3-7, pH 4-10, pH 4-9, pH 4-8, pH 4-7, pH 5-10, pH 5-9, pH 5-8, pH 5-7, pH 6-10, pH 6-9, pH 6-8,
- the pH can be 6 to 7 or the like.
- the method for producing a composition containing EGT and DTH and suppressing coloring includes a step of reducing the content of DTH.
- the step of reducing the DTH content can be used by any known means as long as the DTH content is reduced.
- a step of reducing the content ratio of DTH to EGT can be adopted.
- the mode in which DTH coexists in the composition containing EGT is not particularly limited. It may be an aspect that exists as.
- EGT electrospray
- a method for producing EGT by a fermentation method a method using Escherichia coli or the like is known according to International Publication No. 2019/1673767 and the like.
- the DTH is reduced in the contaminants in the EGT fermentation method, for example, the methods described in Examples described later can be mentioned.
- DTH in the culture solution is reduced and EGT is reduced by adopting a step of deleting the metJ gene of a bacterium belonging to the family Enterobacteriaceae having EGT-producing ability. It is possible to produce efficiently.
- a known method can be used, and examples thereof include a method of knocking out or knocking down the metJ gene by homologous recombination, mutation treatment, genome editing, or the like.
- Bacteria belonging to the family Enterobacteriaceae capable of producing EGT include bacteria of the genus Escherichia, Enterobacter, Pantoea, Klebsiella, and Salmonella. However, it is not limited to these.
- Particularly preferable intestinal bacteria include intestinal bacteria such as Escherichia coli and the like, and Pantoea such as Pantoea ananatis.
- Bacteria belonging to the family Enterobacteriaceae can be cultivated by a usual method. Specifically, LB medium, 2 ⁇ YT medium, NZY medium, M9 medium, SOC medium, YPD medium and the like can be used. EGT and DTH can be produced using the above-mentioned medium, but the medium used is not limited thereto. In addition, the produced EGT and DTH may be accumulated inside the cells, or may be secreted and accumulated outside the cells (in the culture medium).
- EGT and DTH released from the cells or from the cells can be performed by a known method.
- the culture can be subjected to solid-liquid separation such as centrifugation or filtration, and EGT and DTH extracts can be obtained from the cells by solvent extraction, hot water extraction, crushing treatment, or the like.
- EGT can be obtained by subjecting it to known coutomography such as ion exchange chromatography, hydrophobic chromatography, gel filtration chromatography and the like.
- the preferable content ratio of EGT and DTH is the same as above.
- the above manufacturing method can further include a step of adjusting the pH.
- the optimum pH value range is the same as above.
- composition containing EGT and DTH [Method for imparting a color-suppressing effect to a composition containing EGT and DTH]
- the composition containing EGT and DTH It is also possible to provide a method for imparting a coloring suppressing effect to the composition by setting the content of the DTH to 50 parts by mass or less with respect to 100 parts by mass of the EGT.
- the preferable content ratios of EGT and DTH are as described above.
- EGT manufactured by Tetraedron
- DTH manufactured by Tetraedron
- pH 3, 4, 5, 6, 7, 8, 9, or 10 so that the final concentrations of EGT and DTH and pH are as shown in Table 1. It was dissolved in Britton-Robinson Buffer (final concentration 30 mM), and 3.0 ml of a mixed solution of DTH and EGT having different pH and concentration was prepared.
- the Britton-Robinson Buffer which is a wide-area buffer used for adjusting the pH, was prepared as follows. Take 20 ml of a mixed solution of boric acid + phosphoric acid + acetic acid (final concentration 200 mM each), adjust the pH to 3, 4, 5, 6, 7, 8, 9, or 10 with 1N NaOH, and then use water. By messing up to 40 ml, a 300 mM (100 mM each) Britton-Robinson Buffer with a pH of 3 to 10 was obtained.
- EGT and DTH mixed solutions shown in Table 1 were prepared by dissolving EGT and DTH using 300 mM Britton-Robinson buffer and water at each pH so that the final concentration of Britton-Robinson Buffer was 30 mM.
- the EGT and DTH mixed solutions shown in Table 1 were transferred to two tubes of 1.0 ml each for each sample number, and allowed to stand at 30 ° C. or 70 ° C. for 21 days, respectively. Immediately after the start (day 0), on the 8th, 14th, and 21st days, the color change of the solution was recorded by taking pictures of the tube, and 100 ⁇ l of each sample was further sampled, as shown in Table 2. Under the conditions, it was subjected to the quantification of EGT and DTH using high performance liquid chromatography (manufactured by Shimadzu Corporation). FIG. 1 is a photograph of the solution taken on day 14.
- Test Example 2 Evaluation of Color Suppression in Composition Containing EGT and DTH 1
- a new problem was found that the mixed solution of EGT and DTH was colored. Therefore, the degree of this discoloration was quantified by absorbance measurement, and at the same time, the concentrations of EGT and DTH were examined in various ways. , I searched for a method of suppressing coloring.
- FIG. 2 shows the results of the color suppression evaluation test using the samples in Table 3.
- the absorbance (A400 value) at 400 nm which indicates the degree of coloring, increased with the passage of time in all pH groups, and the EGT and DTH mixture confirmed in Example 1 was observed.
- the coloration of the solution could also be confirmed from the absorbance.
- the A400 value was decreased by decreasing the DTH concentration in all pH groups.
- coloring over time is remarkably suppressed by setting the content ratio of DTH to 20 parts by mass or less with respect to 100 parts by mass of EGT. From the quantitative results of EGT of each sample, it was also shown that the decomposition of EGT can be suppressed by lowering the DTH concentration as well as coloring.
- the Escherichia coli ⁇ metJ strain can also be prepared according to the following method, for example. It was constructed by a conventionally known method of deleting each gene region of Escherichia coli BW25113 strain by a homologous recombination method using a counterselection vector (including sacB gene and drug resistance gene) containing the upstream and downstream sequences of the metJ gene.
- the above-mentioned disruption stock construction is carried out by M. S. Donnenberg and J. S. Kaper, Infect. Immun., 1991, 4310-4317, H. Mizoguchi et al., Biosci. Biotechnol. Biochem., 2007, 71 (12) ), 2905-2911, etc. can be referred to.
- pACG-EGT (Prior Art: International Publication No. 2019/1633767) was used. Using the BW25113 strain and the ⁇ metJ strain, transformation was performed using pACG-EGT to obtain EGT-producing strains (BW25113 / pACG-EGT, ⁇ metJ / pACG-EGT).
- a fermentation production test of EGT was carried out using the EGT production strain ⁇ metJ / pACG-EGT constructed above.
- BW25113 / pACG-EGT obtained by introducing pACG-EGT into the BW25113 strain was used as a control strain.
- BW25113 / pACG-EGT, ⁇ metJ / pACG-EGT, each glycerol stock is added to a test tube containing tetracycline (final concentration 10 ⁇ g / mL) in 3 mL of LB medium (polypeptone 10 g, yeast extract 5 g, NaCl 10 g / medium 1 L). Then, the cells were shake-cultured at 30 ° C.
- a preculture solution 5 mL of 2 ⁇ YT medium (polypeptone 16 g, yeast extract 10 g, NaCl 5 g, Glucose 5%, L-Histidine 5 mM, L-Cysteine 2.5 mM, L-Methionine 5 mM, tetra, ⁇ 24 mm test tube).
- EGT and DTH were quantified as follows. During the main culture, 1 mL of the culture solution was collected 24, 48, 72, and 96 hours after the start of the culture, and the culture sample was evaluated. After measuring the cell turbidity (OD600) of the collected culture solution, the cells were centrifuged at 14000 rpm for 10 minutes to separate into an extracellular culture solution and a precipitate (bacteria). The EGT content in the separated extracellular culture solution (extracellular sample) was measured by HPLC. The HPLC measurement conditions are as shown in Table 5 below, and quantification was performed based on the peak of EGT occurring near the retention time of 10 minutes and the peak of DTH occurring around the retention time of 8 minutes.
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Abstract
Description
L-エルゴチオネイン、及び、N,N-ジメチル-L-2-チオヒスチジンを含有する組成物であって、
該N,N-ジメチル-L-2-チオヒスチジンの含有量が、低減されてなる、組成物。
前記N,N-ジメチル-L-2-チオヒスチジンの含有量が低減されることにより、前記組成物の着色が抑制されてなる、[1]に記載の組成物。
前記L-エルゴチオネイン100質量部に対して、前記N,N-ジメチル-L-2-チオヒスチジンの含有量が、50質量部以下である、[1]又は[2]に記載の組成物。
前記L-エルゴチオネイン100質量部に対して、前記N,N-ジメチル-L-2-チオヒスチジンの含有量が、0.0001質量部以上である、[1]~[3]のいずれか1に記載の組成物。
前記L-エルゴチオネイン100質量部に対して、前記N,N-ジメチル-L-2-チオヒスチジンの含有量が、0.05質量部以上である、[1]~[4]のいずれか1に記載の組成物。
L-エルゴチオネイン、及び、N,N-ジメチル-L-2-チオヒスチジンを含有する組成物であって、
該L-エルゴチオネイン100質量部に対して、該N,N-ジメチル-L-2-チオヒスチジンの含有量が、50質量部以下である、
前記組成物の着色を抑制するための組成物。
L-エルゴチオネイン、及び、N,N-ジメチル-L-2-チオヒスチジンを含有し、着色が抑制された組成物の製造方法であって、
該N,N-ジメチル-L-2-チオヒスチジンの含有量を低減させる工程を含む方法。
L-エルゴチオネイン、及び、N,N-ジメチル-L-2-チオヒスチジンを含有する組成物であって、
該L-エルゴチオネイン100質量部に対して、該N,N-ジメチル-L-2-チオヒスチジンの含有量が、50質量部以下とすることによる、
前記組成物に対して着色抑制効果を付与する方法。
EGTは、ヒスチジン誘導体(N,N,N-トリメチル-L-2-チオヒスチジン)であり、その構造は次式(1)で表される。
DTHは、EGTの類縁体であり、その構造は次式(2)で表される。
EGT及びDTHを含有する組成物において、DTHの含有量を低減させることにより、EGTの安定性を高めることができるため、本発明は、上記組成物の着色を抑制するために用いることが可能である。
本発明の組成物は、例えば、錠剤、カプセル剤、顆粒剤、散剤などの固形製剤;または液剤、シロップ剤、注射剤、クリーム、ローション、ペースト、軟膏、エマルジョン(水中油型エマルジョン、油中水型エマルジョン、多重エマルジョン、ミクロエマルジョン、PET-エマルジョン、ピッカリング・エマルジョン)、ゲル(ヒドロゲル、アルコールゲル)、懸濁液などの液状製剤として経口または非経口的(外用を含む)に投与することもできる。固形製剤には、賦形剤、滑沢剤、結合剤、崩壊剤;液状製剤には、溶剤、溶解補助剤、乳化剤、乳化安定剤、増粘剤、保湿剤、懸濁化剤、等張化剤、緩衝剤、無痛化剤などを用いることができる。また必要に応じて、防腐剤、抗酸化剤、着色剤、甘味剤、香料などの添加物を用いることもできる。
本発明の組成物は、飲食品組成物としても使用することができ、食品または機能性食品に含有させて提供され得る。このような食品または機能性食品としては、米飯;そば、うどん、はるさめ、中華麺、即席麺、カップ麺を含む各種の麺類;清涼飲料、炭酸飲料、栄養飲料、果実飲料、乳酸飲料、スポーツ飲料等の飲料;カレールー、シチュー、各種スープ類;アイスクリーム、アイスシャーベット、かき氷等の冷菓;飴、クッキー、キャンディー、ガム、チョコレート、錠菓、スナック菓子、ビスケット、ゼリー、ジャム、クリーム、その他の焼き菓子等の菓子類;かまぼこ、はんぺん、ハム、ソーセージ等の水産・畜産加工食品;加工乳、発酵乳等の乳製品;サラダ油、てんぷら油、マーガリン、マヨネーズ、ショートニング、ホイップクリーム、ドレッシング等の油脂及び油脂加工食品;ソース、ドレッシング、味噌、醤油、たれ等の調味料;スープ、シチュー、サラダ、惣菜、ふりかけ、漬物;その他種々の形態の健康・栄養補助食品・機能性表示食品・特定保健用食品などが例示される。
本発明の組成物が適用される対象者は、EGTが本来有する生理活性を必要とする年代であれば、特に制限されないが、仕事等の生活環境からストレスを受けやすい年代である30歳頃以上であってもよく、ホルモンバランスの変化や生活環境の変化等により身体の変化を感じやすい年代である中年齢者(45歳頃以上55歳未満)であってもよく、高年齢者(55歳以上)であってもよい。
本発明の組成物のpHは、他の配合成分の種類及び含有量、製剤形態、使用方法等に応じて適宜設定され、薬学的又は生理学的に許容できる範囲であれば制限されないが、例えば、pH2~10とすることができる。本発明の効果を安定的に発揮する観点から、本発明の組成物のpHは、例えば、pH2~10、pH2~9、pH2~8、pH2~7、pH3~10、pH3~9、pH3~8、pH3~7、pH4~10、pH4~9、pH4~8、pH4~7、pH5~10、pH5~9、pH5~8、pH5~7、pH6~10、pH6~9、pH6~8、pH6~7等とすることが可能である。
本発明において、EGT及びDTHを含有し、着色が抑制された組成物の製造方法は、DTHの含有量を低減させる工程を含む。
EGT生産能を有する腸内細菌科に属する細菌としては、エシェリヒア(Escherichia)属、エンテロバクター(Enterobacter)属、パントエア(Pantoea)属、クレブシエラ(Klebsiella)属、及びサルモネラ(Salmonella)属の細菌が例示されるが、これらに限定されない。特に好ましい腸内細菌としては、大腸菌(Escherichia coli)等のエシェリヒア属、パントエア・アナナティス(Pantoea ananatis)等のパントエア属などの腸内細菌が挙げられる。
本発明において、EGT、及び、DTHを含有する組成物であって、
該EGT100質量部に対して、該DTHの含有量が、50質量部以下とすることによる、前記組成物に対して着色抑制効果を付与する方法を提供することも可能である。EGT及びDTHの好ましい含有比率については、上記に準じる。
L-エルゴチオネイン(EGT)及びN,N-ジメチル-L-2-チオヒスチジン(DTH)を含む組成物について、種々のpH条件下における保存安定性を下記の通り調べた。
試験例1の結果、EGT及びDTHの混合溶液が着色するという新規な課題が見出されたため、この変色の程度を吸光度測定により数値化すると同時に、EGTとDTHの濃度を様々に検討することで、着色の抑制方法を探索した。
EGT合成遺伝子を発現させた大腸菌を用いた、EGTの微生物生産を試みた(先行技術:国際公開第2019/163767号)。鋭意検討を進めた結果、偶然にもmetJ遺伝子を破壊した株を用いることで培養液中のDTH含量が有意に低下することを見出した。下記に、その実施例を記載する。
Claims (8)
- L-エルゴチオネイン、及び、N,N-ジメチル-L-2-チオヒスチジンを含有する組成物であって、
該N,N-ジメチル-L-2-チオヒスチジンの含有量が、低減されてなる、組成物。 - 前記N,N-ジメチル-L-2-チオヒスチジンの含有量が低減されることにより、前記組成物の着色が抑制されてなる、請求項1に記載の組成物。
- 前記L-エルゴチオネイン100質量部に対して、前記N,N-ジメチル-L-2-チオヒスチジンの含有量が、50質量部以下である、請求項1又は2に記載の組成物。
- 前記L-エルゴチオネイン100質量部に対して、前記N,N-ジメチル-L-2-チオヒスチジンの含有量が、0.0001質量部以上である、請求項1~3のいずれか1項に記載の組成物。
- 前記L-エルゴチオネイン100質量部に対して、前記N,N-ジメチル-L-2-チオヒスチジンの含有量が、0.05質量部以上である、請求項1~4のいずれか1項に記載の組成物。
- L-エルゴチオネイン、及び、N,N-ジメチル-L-2-チオヒスチジンを含有する組成物であって、
該L-エルゴチオネイン100質量部に対して、該N,N-ジメチル-L-2-チオヒスチジンの含有量が、50質量部以下である、
前記組成物の着色を抑制するための組成物。 - L-エルゴチオネイン、及び、N,N-ジメチル-L-2-チオヒスチジンを含有し、着色が抑制された組成物の製造方法であって、
該N,N-ジメチル-L-2-チオヒスチジンの含有量を低減させる工程を含む方法。 - L-エルゴチオネイン、及び、N,N-ジメチル-L-2-チオヒスチジンを含有する組成物であって、
該L-エルゴチオネイン100質量部に対して、該N,N-ジメチル-L-2-チオヒスチジンの含有量が、50質量部以下である、
前記組成物に対して着色抑制効果を付与する方法。
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EP4115881A4 (en) | 2024-04-03 |
KR20220149718A (ko) | 2022-11-08 |
US20230126387A1 (en) | 2023-04-27 |
JP2021138640A (ja) | 2021-09-16 |
JP6864131B1 (ja) | 2021-04-28 |
CN115209895A (zh) | 2022-10-18 |
BR112022017415A2 (pt) | 2022-10-18 |
EP4115881A1 (en) | 2023-01-11 |
CA3170408A1 (en) | 2021-09-10 |
JPWO2021177397A1 (ja) | 2021-09-10 |
TW202146013A (zh) | 2021-12-16 |
US12357614B2 (en) | 2025-07-15 |
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