阅读说明：本技术 羟基磷灰石、化妆品和食品及其生产方法 (Hydroxyapatite, cosmetic and food and production method thereof ) 是由 青木秀希 田中信圣 于 2017-04-27 设计创作，主要内容包括：本发明的目的是提供具有改善的生物相容性、分散性、吸附性、吸收怀和细胞活化能力的羟基磷灰石,以及含有该羟基磷灰石的化妆品和食品及其制造方法。根据本发明,提供了一种粒径为5nm至60nm的碳酸和镁置换的羟基磷灰石,其中羟基磷灰石的钙的一部分被镁置换,而磷酸基的一部分被碳酸基置换。(The object of the present invention is to provide hydroxyapatite having improved biocompatibility, dispersibility, adsorbability, absorption ability and cell activation ability, and cosmetics and foods containing the hydroxyapatite and a method for producing the same. According to the present invention, there is provided carbonic acid and magnesium substituted hydroxyapatite having a particle size of 5nm to 60nm, wherein a part of calcium of the hydroxyapatite is substituted with magnesium and a part of phosphate group is substituted with carbonate group.)

1. A hydroxyapatite substituted with carbonic acid and magnesium, characterized in that the particle diameter of the hydroxyapatite substituted with carbonic acid and magnesium is 5nm or more and 60nm or less, a part of calcium of the hydroxyapatite is substituted with magnesium, and a part of phosphate group is substituted with carbonate group.

2. The carbonic acid and magnesium-substituted hydroxyapatite according to claim 1, characterized in that the particle size is 10nm or more and 50nm or less.

3. Carbonate and magnesium substituted hydroxyapatite according to claim 1, characterized in that it is present in a liquid.

4. carbonic acid and magnesium substituted hydroxyapatite according to claim 1, characterized in that it has the chemical formula Ca_10－xMg_x(PO₄)_6－2/3y(CO₃)_y(OH)₂And x is any value from 0.005 to 0.5 and y is any value from 0.01 to 3.0.

5. The carbonated and magnesium-substituted hydroxyapatite according to claim 1, characterized in that the calcium of the hydroxyapatite is substituted by 0.03 to 5 wt% of magnesium with respect to the calcium and a part of the phosphorus base is substituted by 0.2 to 10 wt% of carbonate with respect to the phosphate group.

6. A cosmetic comprising the carbonic acid and magnesium-substituted hydroxyapatite according to claim 1.

7. Cosmetic product according to claim 6, characterized in that it comprises said carbonic acid and magnesium substituted hydroxyapatite in a concentration of 0.001% to 15% by weight.

8. The cosmetic according to claim 6, wherein the cosmetic is a shampoo, a hair conditioner, a hair tonic, a hair shampoo, a bath shampoo, a hand shampoo, a face wash, a makeup remover, a cleansing cream, a makeup remover oil, a soap, a hand cleanser, a body wash, a lotion, a beauty lotion, an essential oil, an emulsion, a cream, a gel, a tooth powder, a toothpaste, a mouth wash, a whitening liquid, or a deodorant.

9. A food product comprising the carbonic acid and magnesium-substituted hydroxyapatite according to claim 1.

10. The food product according to claim 9, comprising the carbonate and magnesium-substituted hydroxyapatite in a concentration of from 0.001 wt% to 15 wt%.

11. Food product according to claim 9, characterized in that it is a beverage, dairy product, edible oil, sauce, ice cream, soup, delicatessen, pet food or supplement.

12. A method for preparing carbonate-and magnesium-substituted hydroxyapatite in which a portion of calcium of hydroxyapatite is substituted with magnesium and a portion of phosphate group is substituted with carbonate group, having a particle size of 5nm to 60nm, comprising the steps of:

A step of preparing a mixed suspension containing magnesium hydroxide and calcium hydroxide, a step of preparing an aqueous phosphoric acid solution, and a step of mixing the mixed suspension and the aqueous phosphoric acid solution in the presence of carbon dioxide or a carbonate to cause a neutralization reaction.

13. A method for preparing carbonate-and magnesium-substituted hydroxyapatite in which a portion of calcium of hydroxyapatite is substituted with magnesium and a portion of phosphate group is substituted with carbonate group, having a particle size of 5nm to 60nm, comprising the steps of:

The method comprises the steps of preparing a first solution containing a magnesium salt and a calcium salt, preparing a second solution containing a phosphate salt, and mixing the first solution and the second solution in the presence of carbon dioxide or a carbonate salt to cause a neutralization reaction.

14. A method for preparing a cosmetic containing a carbonic acid-and magnesium-substituted hydroxyapatite in which a part of calcium of the hydroxyapatite is substituted with magnesium and a part of a phosphate group is substituted with a carbonate group, having a particle size of 5nm to 60nm, comprising the steps of:

A step of obtaining said carbonic acid and magnesium substituted hydroxyapatite by the method according to claim 12, a step of preparing a suspension containing said phosphoric acid and magnesium substituted hydroxyapatite, and a step of containing said suspension in a cosmetic.

15. A method for preparing a food containing a carbonic acid-and magnesium-substituted hydroxyapatite in which a part of calcium of the hydroxyapatite is substituted with magnesium and a part of phosphate group is substituted with carbonate group, having a particle size of 5nm to 60nm, comprising the steps of:

A step of obtaining said carbonic acid and magnesium substituted hydroxyapatite by the method according to claim 12, a step of preparing a suspension containing said phosphoric acid and magnesium substituted hydroxyapatite, and a step of containing said suspension in a food product.

Technical Field

The present invention relates to hydroxyapatite, cosmetics and foods, and a method for producing the same.

Background

Hydroxyapatite (Ca)₁₀(PO₄)₆(OH)₂) Is a weakly basic calcium phosphate compound. Hydroxyapatite is used for artificial bones, artificial tooth roots, bone fillers, drug carriers, etc. due to its excellent biocompatibility. In recent years, hydroxyapatite has been used in the fields of cosmetics, foods and the like.

For example, patent document 1 (Japanese patent laid-open No. 62-195317) discloses a technique relating to a liquid or emulsion cosmetic in which the particle size is set toThe colloidal particulate solid of hydroxyapatite of (3) is dispersed in water or an organic solvent.

Patent document 2 (japanese unexamined patent publication No. 63-96110) discloses the following technique: manufacture of a composition containingA cosmetic containing hydroxyapatite obtained by reacting calcium hydroxide with an aqueous solution of phosphoric acid under an alkaline condition of pH 10 and drying the aqueous solution with a spray dryer.

Further, patent document 3 (Japanese patent application laid-open No. 2004-532172) discloses a technique relating to a magnesium-substituted crystalline apatite having a stable and pure phase containing about 2.0 to 29% of magnesium therein, and at least 75 wt% of magnesium being replaced with calcium ions in the crystal lattice structure of hydroxyapatite.

Further, non-patent document 1(Materials research.2013; 16(4):779-The content of carbon ions is

Disclosure of Invention

Problems to be solved by the invention

However, in the cosmetic production process, drying a solution containing primary particles of hydroxyapatite with a spray dryer or the like causes the hydroxyapatite to aggregate, solidify, and thereby form large secondary particles. The density of the hydroxyapatite is generally as high as 3.16g/cm³Therefore, such hydroxyapatite is easily precipitated and cannot be uniformly dispersed when added to cosmetics. As a result, variations in cosmetic ingredients occur. Furthermore, such hydroxyapatite is inferior in adsorption property to lipid, protein, dirt, etc., biocompatibility and absorbability.

Further, according to patent document 3, aboutThe magnesium hydroxyapatite is magnesium hydroxyapatite, and is different from calcium hydroxyapatite with high biocompatibility in terms of quantity and chemical properties. The ionic radius of magnesium is as small as about 70% of the ionic radius of calcium. For this reason, if the content of magnesium in the hydroxyapatite significantly exceeds 2 wt%, the crystal structure of the hydroxyapatite may be deformed, the properties of the original hydroxyapatite may be deteriorated, and biocompatibility may be adversely affected.

Further, according to non-patent document 1, the size of the produced hydroxyapatite particles is as large as 63 to 90 μm.

In view of the above problems, it is an object of the present invention to provide a cosmetic or food containing hydroxyapatite improved in biocompatibility, dispersibility, adsorbability, absorbability and cell-activating ability, and a method for producing the same.

Means for solving the problems

According to the present invention, there is provided a hydroxyapatite wherein calcium is partially substituted with magnesium and phosphate is partially substituted with carbonic acid having a carbonate group and a particle size of 5nm to 60 nm.

Effects of the invention

According to the present invention, it is possible to provide hydroxyapatite having a particle size of 5nm to 60nm, which has higher biocompatibility, dispersibility, adsorbability, absorbability and cell activation ability, and cosmetics and foods comprising the same, and a preparation method thereof.

Drawings

Fig. 1 illustrates a flow diagram of a method for producing carbonic acid and magnesium-substituted hydroxyapatite by neutralization reaction.

Figure 2 illustrates a flow diagram of a method for producing carbonic acid and magnesium-substituted hydroxyapatite by reaction of a salt and a salt.

FIG. 3 is a flow chart illustrating a method for producing a cosmetic containing hydroxyapatite substituted with carbonic acid and magnesium.

fig. 4 illustrates a flow chart of a method for producing a food product comprising carbonic acid and magnesium-substituted hydroxyapatite.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1. Carbonic acid and magnesium substituted hydroxyapatite

In this embodiment, a carbonic acid and magnesium substituted hydroxyapatite is provided.

The carbonate-and magnesium-substituted hydroxyapatite is of the formula Ca₁₀(PO₄)₆(OH)₂a part of calcium of the hydroxyapatite of (1) is substituted with magnesium and a part of the phosphate group is substituted with a carbonate group compound. The substitution rate of calcium by magnesium and the substitution rate of phosphate group by carbonate group are selected so that the particle size of the hydroxyapatite substituted with magnesium and carbonate is within 5nm to 60nm (more preferably, the particle size is within 10nm to 50 nm). The particle size is an average value of the lengths in the minor axis and major axis directions of the primary particles of the carbonic acid-and magnesium-substituted hydroxyapatite. The primary particles are particles generated by growth of a single crystal nucleus.

For example, the carbonate and magnesium substituted hydroxyapatite may also be of the formula ((Ca, Mg)₁₀(PO₄，CO₃)₆(OH)₂) Or Ca_10－xMg_x(PO₄)_6－2/3y(CO₃)_y(OH)₂The compound shown in the specification. Wherein x isPreferably, y is an arbitrary value ofAny value of (c). More preferably, the value of x is any value from 0.01 to 0.3, and the value of y is preferably any value from 0.02 to 1.0. Further, examples of preferred carbonic acid and magnesium substituted hydroxyapatite include Ca_9.99Mg_0.01(PO₄)_5.98(CO₃)_0.02(OH)₂、C_9.7Mg_0.3(PO₄)_5.33(CO₃)₁(OH)₂Or a mixture of either.

Alternatively, the carbonic acid and magnesium substituted hydroxyapatite is a compound of formula Ca₁₀(PO₄)₆(OH)₂The calcium of the hydroxyapatite of (1) is substituted with 0.03 to 5 wt% of magnesium with respect to calcium, and a part of the phosphate group is substituted with 0.03 to 5 wt% of a carbonate group with respect to the phosphate group.

The carbonic acid and magnesium-substituted hydroxyapatite of this example may be present in a liquid. By being present in the liquid, the formation and/or growth of secondary particles caused by drying can be suppressed. The secondary particles are particles produced by aggregating and growing, aggregating, or consolidating the primary particles. Thus, the carbonate and magnesium substituted hydroxyapatite may be present in smaller particle sizes. Examples of liquids include water, aqueous solutions, emulsions, oils, creams, gels, and the like.

The carbonic acid and magnesium substituted hydroxyapatite of the above embodiments is easily absorbed by organisms and has higher biocompatibility. In addition, it is very effective in adsorbing substances causing lipids, proteins, dirt, bacteria and odors. The above carbonic acid and hydroxyapatite are compared with conventional hydroxyapatiteThe magnesium-substituted hydroxyapatite has a small particle diameter, a large surface area wt ratio, and an effect of having characteristics close to those of a living body tissue, and further, it is considered that the surface potential thereof is more positively inclined. For example, the surface area of the carbonate-and magnesium-substituted hydroxyapatite is 100m²More than 10 times of the surface area of the conventional hydroxyapatite.

Further, the hydroxyapatite substituted with carbonic acid and magnesium of the present example has a good effect of activating cells. Hydroxyapatite is generally effective in promoting collagen production by fibroblasts, promoting cell activation such as metabolism in cells by attracting capillaries, and the like. Since the carbonate-and magnesium-substituted hydroxyapatite of the present example has a small particle size and excellent absorbability and biocompatibility, it exhibits more excellent cell activation effect.

In addition, the present carbonic acid and magnesium-substituted hydroxyapatite are more uniformly dispersed when mixed with liquids, emulsions, oils, creams, gels, and the like.

Therefore, the carbonic acid and magnesium-substituted hydroxyapatite of the present example has excellent performances in biocompatibility, dispersibility adsorptivity, absorbability and cell activation ability.

Such carbonic acid and magnesium-substituted hydroxyapatite may be added to be used in, for example, cosmetics or foods described later, medicines, dental medicines, kitchen detergents, laundry detergents, cleaning detergents, disinfectants, deodorants, fertilizers, pesticides, or liquids dispersed by a humidifier.

2. Method for producing hydroxyapatite substituted with carbonic acid and magnesium

In this example, a method for producing carbonate-and magnesium-substituted hydroxyapatite is provided.

fig. 1 shows an example of the manufacturing method of the present embodiment. The production method is a method for producing hydroxyapatite by neutralization reaction, and includes, for example: the method includes the steps of (S101) preparing a mixed suspension containing magnesium hydroxide and calcium hydroxide, step (S102) preparing an aqueous phosphoric acid solution, and step (S103) mixing the mixed suspension and the aqueous phosphoric acid solution in the presence of carbon dioxide or carbonate to cause a neutralization reaction.

In step S101, a mixed suspension containing magnesium hydroxide and calcium hydroxide is prepared. The mixed suspension comprises an aqueous solution of magnesium hydroxide and calcium hydroxide and solids. The molar ratio of magnesium hydroxide to calcium hydroxide in the mixed suspension can be set to obtain the desired degree of substitution of carbonic acid and magnesium-substituted hydroxyapatite. For example, the molar ratio of magnesium hydroxide to calcium hydroxide in the mixed suspension is preferably 1: 1000 to 1: 100, more preferably 1: 500 to 1: 50. The preferred concentration of magnesium hydroxide is 0.0002 to 0.01mol/L and the preferred concentration of calcium hydroxide is 0.05 to 1.0 mol/L. The temperature of the mixed suspension is preferably

In step S102, an aqueous phosphoric acid solution is prepared. The molar ratio of magnesium hydroxide and calcium hydroxide to phosphoric acid contained in the mixed suspension, and the concentration of the aqueous phosphoric acid solution may be set to obtain a desired yield of carbonic acid and magnesium-substituted hydroxyapatite. The concentration of the aqueous phosphoric acid solution is preferably set toThe temperature of the phosphoric acid aqueous solution is preferably 5 to 50 ℃.

In step S103, the mixed suspension obtained in step S101 and the phosphoric acid aqueous solution obtained in step S102 are mixed in the presence of carbon dioxide or carbonate to cause a neutralization reaction. Step S103 is performed by, for example, mixing the mixed suspension and the phosphoric acid aqueous solution under a carbon dioxide gas atmosphere. Alternatively, the carbonate may be added to the mixed suspension or the phosphoric acid aqueous solution in advance, and the both may be mixed. Alternatively, the carbonate may be added to a mixture in which the mixed suspension and the phosphoric acid aqueous solution are mixed.

The carbon dioxide gas may be any gas containing carbon dioxide, pure carbon dioxide gas may be used as the carbon dioxide gas, and air may be used. As the carbonate, for example, ammonium carbonate, sodium bicarbonate, sodium carbonate, potassium carbonate, or potassium bicarbonate can be used. The concentrations of carbon dioxide and carbonate are, for example, 0.03 to 0.1mol/L and 0.01 to 1.0mol/L, respectively.

The mixing can be carried out, for example, by stirring. The stirring can be carried out, for example, by means of a stirrer known to the person skilled in the art, but is preferably carried out using an ultrasonic vibration device. When the ultrasonic vibration device is used, although the output of the device varies depending on the scale of mass production, stirring can be performed in the intensity ranges of 100W to 2kW and 10 to 50 kHz. Thereby, aggregation of hydroxyapatite crystals caused by a neutralization reaction can be prevented. As a result, carbonic acid and magnesium-substituted hydroxyapatite having a small particle size can be obtained. In addition, when carbon dioxide gas is used, the phosphoric acid group can be more effectively replaced with a carbonic acid group by stirring with an intensity within the above range.

A suspension containing carbonic acid and magnesium-substituted hydroxyapatite can be obtained by neutralization. After the neutralization reaction, the suspension may also be concentrated. Alternatively, a portion of the suspension precipitate may be removed.

By performing the above stepsCarbonic acid and magnesium substituted hydroxyapatite having a particle size of 5nm to 60nm can be obtained.

Fig. 2 shows an example of a manufacturing method according to another embodiment. The method for producing hydroxyapatite by reacting a salt with a salt, comprising: the step (S201) of preparing a first solution containing a magnesium salt and a calcium salt, and (S202) of preparing a second solution containing a phosphate, the step (S203) of mixing the first solution and the second solution in the presence of carbon dioxide or a carbonate to cause a reaction.

In step S201, a first solution comprising a magnesium salt and a calcium salt is prepared. As the magnesium salt, for example, magnesium chloride, magnesium nitrate, magnesium sulfate, or magnesium acetate can be used, but magnesium chloride is preferably used because it is inexpensive. As the calcium salt, calcium nitrate, calcium chloride, calcium lactate, and the like can be used, but calcium chloride is preferably used because it is inexpensive.

Can setThe molar ratio of calcium salt to calcium salt in the first solution to obtain the desired substitution rate of carbonic acid and magnesium-substituted hydroxyapatite. For example, the molar ratio of magnesium salt to calcium salt in the first solution is preferably 1: 1000 to 1: 100, more preferably 1: 500 to 1: 50. The preferred concentration of magnesium salt isThe preferred calcium salt concentration isThe temperature of the first solution is preferably 5 to 50 ℃.

In step S202, a second solution including phosphate is prepared. As the phosphate, ammonium phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, or the like can be used, but ammonium phosphate is preferably used because ammonia is volatilized and does not remain.

The molar ratio of magnesium and calcium salts relative to phosphate and the concentration of phosphate contained in the first solution may be set to obtain a desired degree of substitution of carbonic acid and magnesium-substituted hydroxyapatite. The preferred concentration of phosphate is 0.03 to 0.6 mol/L. The temperature of the phosphoric acid aqueous solution is preferably 5 to 50 ℃.

In step S203, the first solution obtained in step S201 and the second solution obtained in step S202 are mixed in the presence of carbon dioxide or carbonate to cause a salt reaction. Step S203 is performed, for example, by mixing the first solution and the second solution under a carbon dioxide atmosphere. Alternatively, the carbonate may be added to the first solution or the second solution in advance, and the two may be mixed. Alternatively, the carbonate may be added to a mixture in which the first solution and the second solution are mixed.

As the carbon dioxide gas and the carbonate, for example, the same matters as those described above can be used. The mixing can be carried out by the methods already described above.

By means of the reaction between the salt and the salt, a suspension containing carbonic acid and magnesium-substituted hydroxyapatite can be obtained. After the reaction, the suspension may also be concentrated. Alternatively, a portion of the suspension precipitate may be removed.

By performing the above steps S201 to S203, carbonic acid and magnesium-substituted hydroxyapatite having a particle size of 5nm to 60nm may be obtained.

It is believed that the particle size obtained by the method of the above example isThe reasons for the carbonic acid and magnesium-substituted hydroxyapatite of (4) are as follows. For example, since magnesium atoms are smaller than calcium atoms, the size of the molecule itself can be made small by replacing calcium with magnesium. In addition, the formation of crystals from the substituted carbonate group can be suppressed. Further, by not drying the suspension after the neutralization reaction of step S103 or after the salt-salt reaction of step S203, the formation of larger secondary particles can be prevented.

Thus, according to the method of the example, carbonic acid and magnesium substituted hydroxyapatite excellent in biocompatibility, dispersibility, adsorptivity, absorbability and cell activation ability can be manufactured.

Further, according to the manufacturing method of the embodiment, since it is not necessary to synthesize hydroxyapatite under an alkaline condition as in the prior art, the obtained crystal does not contain an excessive amount of alkali. Therefore, the hydroxyapatite substituted with carbonic acid and magnesium produced by the production method does not cause irritation or damage when it comes into contact with a living body. For example, cosmetics containing a carbonic acid and magnesium-substituted hydroxyapatite described later do not cause irritation or damage to skin tissues due to alkali.

3. Cosmetic preparation

According to another embodiment, a cosmetic is provided comprising carbonic acid and magnesium-substituted hydroxyapatite having a particle size of 5nm to 60 nm.

The carbonic acid-and magnesium-substituted hydroxyapatite contained in the cosmetic is carbonic acid-and magnesium-substituted hydroxyapatite having a particle size of 5nm to 60 nm. Such hydroxyapatite can be produced, for example, by the above production method.

The cosmetic may be any known cosmetic, for example, a mixture composed of materials selected from purified water, other liquids, oil, soap base, alcohol such as ethanol or glycerin, perfume, stearic acid, squalene, propylene glycol, vaseline, surfactant, paraffin, various vitamins, collagen, etc. Examples of such cosmetics include, but are not limited to, shampoos, conditioners, hair tonics, hair shampoos, body shampoos, hand shampoos, face washes, makeup removers, cleansing creams, makeup removers, soaps, hand lotions, body washes, lotions, beauty lotions, essential oils, lotions, creams, gels, tooth powders, toothpastes, mouth rinses, whitening solutions, deodorants, and the like. In particular, since the carbonic acid and magnesium-substituted hydroxyapatite better absorbs the lipid and oil such as oleic acid, oleic acid oil ester, yucana oil, etc., the cosmetic preferably contains it. In addition, when vitamin C is included, hydroxyapatite enhances the antioxidant ability of vitamin C, and thus a cosmetic having a higher skin quality improvement effect can be provided.

The concentration of the carbonic acid and magnesium-substituted hydroxyapatite in the cosmetic is preferably 0.001 wt% or more and 15 wt% or less, for example.

Since carbonate and magnesium-substituted hydroxyapatite have a small particle size as described above, they easily enter pores and epidermis, and have a good effect of adsorbing substances such as proteins, lipids, dirt, bacteria, or odor. Therefore, by using the cosmetic, sebum, keratotic plugs, blackheads, cutin and the like of the skin can be effectively removed, and acne, athlete's foot, underarm odor, old person odor and the like can be prevented and improved. In addition, as described above, the carbonic acid and magnesium-substituted hydroxyapatite promotes the production of collagen in fibroblasts, and promotes cellular metabolism by attracting capillaries. Thus, by using the cosmetic, the skin and hair can be further improved. In addition, the hydroxyapatite has a small particle size and hardly causes physical irritation to the skin, so that the cosmetic has a smoother feeling in use. Further, if the hydroxyapatite contained in the cosmetic is manufactured by the above manufacturing method, irritation and damage to the skin due to alkali are not caused.

When the cosmetic is dentifrice, toothpaste, mouthwash or whitening solution, the cosmetic has effects of adsorbing and removing tooth stain, muiran, tartar, etc. In addition, carbonate and magnesium-substituted hydroxyapatite are very effective in replenishing minerals in the subsurface decalcified portion of the enamel that have been solubilized by acids produced by bacteria within the calculus or by acids of food and beverages. This is due to the similarity in size, composition and structure of the carbonate and magnesium substituted hydroxyapatite to that contained in teeth. Therefore, by using the cosmetic, it is possible to fill and repair wounds on the surface of teeth, re-calcify the initial caries and at the same time smooth the surface to prevent adhesion of dental plaque, dirt, etc.

Further, since the carbonic acid and the magnesium-substituted hydroxyapatite are uniformly dispersed in the above material, a cosmetic free from component disorder is provided.

4. Method for producing cosmetic

According to an embodiment, a method for manufacturing a cosmetic product is provided.

Fig. 3(a) and (b) show an example of a cosmetic manufacturing method. The method for producing a cosmetic comprises the steps of: step (S301) a suspension containing carbonic acid and magnesium-substituted hydroxyapatite is obtained by performing the manufacturing methods S101 to 103 of carbonic acid and magnesium-substituted hydroxyapatite, and step (S302) the suspension containing carbonic acid and magnesium-substituted hydroxyapatite is included in a cosmetic (fig. 3 (a)). Alternatively, the manufacturing method of the cosmetic includes the step (S303) of obtaining a suspension containing carbonic acid and magnesium-substituted hydroxyapatite by performing the manufacturing methods of carbonic acid and magnesium-substituted hydroxyapatite S201 to 203, and the step (S304) of including the carbonic acid and magnesium-substituted hydroxyapatite in the cosmetic (fig. 3 (b)).

Step S301 and step S303 are the same as those described in the above 2, carbonic acid and magnesium-substituted hydroxyapatite production method. In steps S302 and S304, a suspension containing carbonic acid and magnesium-substituted hydroxyapatite is included in a cosmetic. Step S302 and step S304

For example, steps S302 and S304 may be performed by adding the suspension to any of the above-described cosmetics manufactured in advance and mixing, and steps S302 and S304 may also be performed by manufacturing a cosmetic from a raw material of any of the cosmetics to which the suspension is added. The mixing may be selected according to the type of cosmetic, and may be performed, for example, by a mixer, a kneader, a stirrer, a disperser, or a blender.

According to the cosmetic manufacturing method of the embodiment, the carbonic acid and the magnesium-substituted hydroxyapatite can be included in the cosmetic without drying them. Thus, a cosmetic containing hydroxy-substituted hydroxyapatite of magnesium and carbonic acid having a small particle size and not being aggregated and/or solidified can be provided.

5. food product

According to another embodiment, a food product comprising carbonic acid and magnesium-substituted hydroxyapatite is provided.

The carbonic acid and magnesium substituted hydroxyapatite contained in the food is any one of the above-mentioned carbonic acid and magnesium substituted hydroxyapatite. Such hydroxyapatite can be produced, for example, by the above production method.

The food may be a beverage such as water, coffee, tea, fruit juice, soft drink, etc., a dairy product such as milk, yogurt, cheese, etc., an edible oil such as salad oil, olive oil, etc., a seasoning, ice cream, soup, delicatessen (soft can), pet food or supplement, etc., but is not limited thereto. Furthermore, the food product may also contain additives such as vitamins and the like, particularly preferably vitamin D and vitamin C. If vitamin D is contained, the absorption efficiency of calcium is higher. Therefore, such foods are particularly suitable for sports drinks, and are very effective in preventing and improving osteoporosis and the like. In addition, since vitamin D is activated by hydroxyapatite, a food having a higher vitamin D absorption efficiency can be provided. In the case of containing vitamin C, hydroxyapatite enhances the antioxidant ability of vitamin C, and thus a food having a higher antioxidant ability can be provided.

The concentration of the hydroxyapatite substituted with carbonic acid and magnesium in the food is, for example, 0.001 wt% or more and 10 wt% or less.

The carbonate and magnesium-substituted hydroxyapatite of the examples has a small particle size and high absorbability, and thus can be effectively absorbed in the stomach and intestines. Therefore, magnesium, calcium, and phosphoric acid can be more efficiently taken by taking the food. In addition, since the composition of the carbonate and magnesium-substituted hydroxyapatite is similar to that of inorganic components contained in bones and teeth, the food is more effective in enhancing bone quality. In addition, since the carbonic acid and magnesium-substituted hydroxyapatite of the present example can be uniformly dispersed in the food, the food without component disorder is provided.

6. Method for producing food

According to an embodiment, a method for manufacturing a food item is provided.

Fig. 4(a) and 4(b) show an example of a food production method. The manufacturing method of the food comprises the following steps: step (S401) of manufacturing hydroxyapatite by performing the carbonic acid and magnesium substitution Obtaining hydroxyapatite containing carbonic acid and magnesium substitution, and a step (S402) of including a suspension containing the hydroxyapatite containing carbonic acid and magnesium substitution in the food product (fig. 4 (a)). Alternatively, the food product manufacturing method comprises: the step (S403) of obtaining a suspension containing carbonic acid and magnesium-substituted hydroxyapatite by performing the manufacturing methods S201 to 203 containing the carbonic acid and magnesium-substituted hydroxyapatite, and the step (S404) of including the suspension containing carbonic acid and magnesium-substituted hydroxyapatite in the food product (fig. 4 (b)).

Step S401 or S402 is the same as that described in the above 2, method for producing a hydroxyapatite substituted with carbonic acid and magnesium. In step S402 or S404, a suspension comprising carbonic acid and magnesium-substituted hydroxyapatite is included in the food product. For example, steps S402 and S404 may be performed by adding the suspension to any of the previously manufactured foods and mixing, or steps S402 and S404 may be performed by manufacturing a food from any of the cosmetic food materials to which the suspension is added. The mixing may be selected depending on the kind of food, and may be performed by, for example, a mixer, a kneader, a stirrer, a disperser, or a blender.

According to the food manufacturing method of this embodiment, it is possible to be included in the food without drying the carbonic acid and the magnesium-substituted hydroxyapatite. Thus, a food product containing carbonic acid and magnesium-substituted hydroxyapatite which has a small particle size and is not aggregated and/or solidified can be provided.

Hereinafter, embodiments of the present invention will be described in detail.

[ example 1]

1L of a suspension containing 0.001mol and 0.01mol of magnesium hydroxide and 0.1mol and 1mol of calcium hydroxide in water at 22 ℃ and 37 ℃ was prepared. Next, 1L of an aqueous solution containing 0.06 to 0.6mol of phosphoric acid at 22 ℃ and 37 ℃ was prepared. The suspension and the aqueous solution at 22 ℃ and the suspension and the aqueous solution at 37 ℃ were respectively stirred in an atmosphere of carbon dioxide gas (air) using ultrasonic stirrers set at 600W and 20kHz to obtain a prefecture liquid.

When the obtained suspensions were analyzed by X-ray diffraction (XRD: X-ray diffraction), a typical hydroxyapatite crystal pattern was observed. That is, it was confirmed that the basic structure of the particles contained in the obtained suspension was the same as that of hydroxyapatite.

Furthermore, when the obtained suspension was analyzed by Fourier Transform Infrared Spectroscopy (FTIR), absorption peaks occurred in the hydroxyl group and the carbonate group. That is, it was confirmed that hydroxyapatite containing carbonic acid was synthesized.

Further, when the obtained suspension was analyzed by Inductively Coupled Plasma emission spectroscopy (ICP: Inductively Coupled Plasma), it was confirmed that the particles contained in the obtained suspension included about 0.03 to 0.9 wt% of magnesium and about 0.5 to 5 wt% of carbonate ions. The wt% of magnesium and carbonate ions replaced was calculated by converting the molecular weight of hydroxyapatite to 1 kg.

From the above analysis results of XRD, FTIR and ICP, it was confirmed that the obtained suspension contained carbonic acid and magnesium-substituted hydroxyapatite.

From the results of calculating the crystallite size of the crystallites obtained by synthesis from the half-value width by X-ray diffraction method, the primary particles having the average sizes of the C axis (long axis direction) and the a axis (short axis direction) of the crystallites are widely distributed between 10m and 60 nm. The larger the amount of substitution of magnesium and carbonate ions, the smaller the initial particle size, the minimum being close to 10 nm.

The settling properties of the suspension obtained by synthesis become slower as the size of the primary particles and the size of the secondary particles become smaller. Furthermore, no crystal precipitation was observed from the supernatant of the suspension. That is, it was confirmed that the hydroxyapatite substituted with carbonic acid and magnesium contained in the supernatant liquid contained floating microcrystals.

When the surface area of the obtained particles was measured by a gas adsorption method (BET method), the surface area was The range of (1). The surface area is inversely proportional to the size of the initial particles. On the other hand, the surface area of the commercially available hydroxyapatite powder was 10m²The ratio of the carbon atoms to the carbon atoms is less than g.

< evaluation of lipid adsorption (1) >

A first chromatography column packed with the particle powder of example 1 obtained synthetically at room temperature of 22 ℃ and a second chromatography column packed with a commercially available hydroxyapatite powder were prepared and passed through olive oil diluted with n-hexane, respectively. Thereafter, the first chromatography column and the second chromatography column were washed with n-hexane, and the amount of lipid peroxide contained in each washing solution was measured. This experiment was performed 5 times, and the average value of the adsorption amount of the lipid peroxide was calculated by the iodometric method. As a result, assuming that the adsorption amount of the lipid peroxide contained in the washing solution of the first chromatography column is 100, the adsorption amount of the lipid peroxide contained in the second chromatography column is 60 to 70. That is, it was confirmed that the hydroxyapatite substituted with carbonic acid and magnesium absorbed more lipid than the usual hydroxyapatite.

< evaluation of lipid adsorption (2) >

a suspension containing 1 wt% of commercially available hydroxyapatite crystals, a suspension of 1 wt% of carbonic acid and magnesium-substituted hydroxyapatite obtained in example 1, a suspension of 1 wt% of a pure water containing α -alumina and a suspension of 1 wt% of pure water containing sericite each 100mL was prepared. 5g of oleic acid, oleic acid oleyl ester and olive oil were added to each suspension separately and immersed for 24 hours. Thereafter, each suspension was washed with diethyl ether, and the adsorbed amounts of oleic acid, oleic acid oleyl ester and olive oil were analyzed by wt analysis. As a result, assuming that the lipid adsorption amount of the suspension containing carbonic acid and magnesium-substituted hydroxyapatite obtained in example 1 was 1, the lipid adsorption amount of the suspension containing commercially available hydroxyapatite was about 0.8. In addition, pure aqueous suspensions containing mica, containing pure aqueous suspensions of alpha-alumina, gave the result of almost no absorption of lipids.

< evaluation of dispersibility >

The suspension of carbonic acid and magnesium-substituted hydroxyapatite of example 1 and the commercially available hydroxyapatite powder were added to commercially available 100g of cosmetics such as milky lotion, facial cleanser, cream and soap or commercially available 100g of foods such as beverage, yogurt, fruit juice, etc., in a wt ratio

The results of observing the obtained cosmetics and foods, the carbonic acid and magnesium substituted hydroxyapatite obtained in example 1 contained in these cosmetics and foods had less precipitation and dispersed well compared to the commercially available hydroxyapatite.

Example 2: production and evaluation of cosmetic liquid

An alkaline cosmetic water (1000 mL total) comprising 3g of potassium hydroxide, 1g of the carbonic acid and magnesium-substituted hydroxyapatite of example 1, 200mL of glycerin, 250mL of ethanol and 550mL of purified water was prepared.

Ten adult female and male subjects compared the effect of removing dirt and the feeling of use using the toning lotion and the toning lotion manufactured by replacing the carbonic acid and magnesium-substituted hydroxyapatite in the combination with commercially available 1g hydroxyapatite (alpha alumina or sericite). As a result, 8 of 10 subjects felt that the cosmetic liquid containing hydroxyapatite substituted with carbonic acid and magnesium completely fell off the lipid, and the feeling of use was refreshing.

Example 3: production and evaluation of cream

A cream (100g) was prepared which contained 10 to 20 wt% of stearic acid, 0.5 to 1.0 wt% of potassium hydroxide, 10 to 20 wt% of glycerin, 0.5 to 1.0 wt% of perfume, 5 to 10 wt% of the carbonic acid and magnesium-substituted hydroxyapatite of example 1, appropriate amounts of antioxidant, antibacterial agent and purified water. The hydroxyapatite dispersed in the cream was visually observed, and the dispersion was good.

The cream and a cream prepared by replacing the carbonic acid and magnesium-substituted hydroxyapatite in the above combination with commercially available hydroxyapatite were applied to the faces of 10 subjects of 5 each of men and women, and washed clean. As a result, all subjects were given the impression that the cream with the addition of carbonic acid and magnesium-substituted hydroxyapatite was smoother and had a fresh feeling after washing.

Example 4: production and evaluation of liquid soap

The suspension of carbonic acid and magnesium-substituted hydroxyapatite of example 1 was added at a concentration of 1% to 5% to a 30% aqueous solution of a temporary liquid soap obtained by saponifying fats and oils such as vegetable oil with potassium hydroxide, and further a thickener and a moisturizing ingredient were compounded in order to obtain a moderate viscosity to produce a liquid soap.

Ten adult male and female subjects used the liquid soap and a liquid soap prepared by replacing carbonic acid and magnesium-substituted hydroxyapatite in the above composition with commercially available hydroxyapatite, and compared the effect of removing dirt and the feeling of use. As a result, 7 persons had the impression that the liquid soap added with the hydroxyapatite substituted with carbonic acid and magnesium could remove the dirt better and had a refreshing feeling after use.

Example 5: preparation method of bath lotion

10g of suspension containing 1 wt% of carbonic acid and magnesium-substituted hydroxyapatite of example 1, 90g of purified water, 10g of sake, 1g of natural salt, 50g of citric acid, 50g of potato starch, 2g of jojoba oil and 1g of hinoki essential oil were prepared.

Ten adult male and female subjects put the above 20g bath cream into a 200L bath and bathe. Comparing the body wash with a body wash prepared by replacing carbonic acid and magnesium-substituted hydroxyapatite in the above composition with commercially available hydroxyapatite, 8 out of 10 persons felt less deposition and good fluidity of the body wash to which carbonic acid and magnesium-substituted hydroxyapatite were added. In addition, the impression is also given that dirt and keratin on the skin surface are removed and the skin surface is smooth.

Example 6: production and evaluation of yogurt

Yoghurt was prepared by adding 0.1 wt% 10mL of the carbonic acid and magnesium substituted hydroxyapatite suspension of example 1 to 100 grams of commercially available yoghurt.

As a result of visual observation of the carbonic acid and magnesium-substituted hydroxyapatite contained in the yogurt, neither aggregation nor precipitation occurred, and the particles were well dispersed.

Example 7: production and evaluation of orange juice

Orange juice was prepared by adding 10mL of 0.1 wt% suspension of the carbonic acid and magnesium substituted hydroxyapatite of example 1 to 90g of commercially available 100% orange juice. The flavor of the resulting clear juice was the same as the commercial clear juice flavor before the addition of the suspension of hydroxyapatite substituted with carbonic acid and magnesium.

Example 8: production and evaluation of calcium-supplementing beverage

1mL of the carbonic acid and magnesium-substituted hydroxyapatite suspension of example 1 having a floatability of 1% was added to 0.1% saline to prepare a calcium-supplementing beverage. The calcium supplement beverages were visually observed and compared with calcium supplement beverages prepared by replacing the carbonic acid and magnesium-substituted hydroxyapatite in the above composition with commercially available hydroxyapatite, and it was found that the commercially available hydroxyapatite powder precipitated or aggregated, while the carbonic acid and magnesium-substituted hydroxyapatite did not precipitate or aggregate and was well dispersed.

In addition, the bending strength of the femurs of mice after 3 months of daily administration of the calcium-supplemented beverage was compared with that of the femurs of mice after 3 months of daily administration of the non-supplemented beverage, and the former was found to be about 20%.

[ example 9]

A1L aqueous solution containing 0.1mol of magnesium chloride and 0.1mol of calcium nitrate was prepared. 1L of an aqueous solution containing 0.06 mol of ammonium phosphate was prepared. Both aqueous solutions were adjusted to 37 ℃ and stirred under a carbon dioxide atmosphere (air) using an ultrasonic stirring device set at 600W and 20kHz intensity to obtain a suspension.

The obtained suspension was analyzed by XRD, FTIR and ICP in the same manner as in example 1, and as a result, about 0.5 wt% of magnesium and about 2 wt% of carbonate ions were found in the suspension. Furthermore, it was confirmed that the suspension was a suspension of about 0.5 wt% of crystals of carbonic acid and magnesium-substituted hydroxyapatite.

[ example 10]

A1L aqueous solution containing 0.025mol of sodium bicarbonate and 0.25mol of calcium salt was prepared. 15g of 85% aqueous phosphoric acid solution were prepared. The calcium hydroxide aqueous solution and phosphoric acid were stirred at 37 degrees celsius using an ultrasonic stirrer set to 600W and 20kHz intensity to obtain a suspension.

The obtained suspension was analyzed by XRD, FTIR and ICP in the same manner as in example 1, and as a result, the suspension contained 0.2 wt% of magnesium and about 5 wt% of carbonate ions. In addition, the crystallites were confirmed to be hydroxyapatite crystals substituted with carbonic acid and magnesium. Further, the size of the primary particles of the obtained carbonate-and magnesium-substituted hydroxyapatite crystallites is 20nm or less.

The same results as in example 1 were obtained when the adsorptivity and dispersibility of the carbonic acid and magnesium-substituted hydroxyapatite obtained in examples 9 and 10 were evaluated by the above-mentioned methods. Further, when the carbonic acid and magnesium substituted hydroxyapatite of examples 9, 10 was used instead of the carbonic acid and magnesium substituted hydroxyapatite of example 1 to said exampleThe results obtained were the same as those obtained using the substituted hydroxyapatite of example 1 containing carbonic acid and magnesium.

The above embodiments are merely examples and are not intended to limit the scope of the present invention. The various embodiments described above may be embodied in various other forms, and various omissions, substitutions, and changes may be made without departing from the scope of the invention. The above-described embodiments and modifications thereof are included in the scope and gist of the present invention, and are also included in the inventions described in the claims and the equivalent scope thereof.

The claims (modification according to treaty clause 19)

1. A hydroxyapatite substituted with magnesium and carbon dioxide, characterized in that it comprises primary particles in a non-aggregated state, wherein calcium is partly substituted with magnesium and phosphate groups are partly substituted with carbonate groups, and the primary particles have a particle diameter of 5nm to 60 nm.

2. The carbonic acid and magnesium-substituted hydroxyapatite according to claim 1, characterized in that the particle size is 10nm or more and 50nm or less.

3. Carbonate and magnesium substituted hydroxyapatite according to claim 1, characterized in that it is present in a liquid.

4. Carbonic acid and magnesium substituted hydroxyapatite according to claim 1, characterized in that it has the chemical formula Ca_10－xMg_x(PO₄)_6－2/3y(CO₃)_y(OH)₂and x is any value from 0.005 to 0.5 and y is any value from 0.01 to 3.0.

5. The carbonated and magnesium-substituted hydroxyapatite according to claim 1, characterized in that the calcium of the hydroxyapatite is substituted by 0.03 to 5 wt% of magnesium with respect to the calcium and a part of the phosphorus base is substituted by 0.2 to 10 wt% of carbonate with respect to the phosphate group.

6. A cosmetic comprising the carbonic acid and magnesium-substituted hydroxyapatite according to claim 1.

7. Cosmetic product according to claim 6, characterized in that it comprises said carbonic acid and magnesium substituted hydroxyapatite in a concentration of 0.001% to 15% by weight.

8. The cosmetic according to claim 6, wherein the cosmetic is a shampoo, a hair conditioner, a hair tonic, a hair shampoo, a bath shampoo, a hand shampoo, a face wash, a makeup remover, a cleansing cream, a makeup remover oil, a soap, a hand cleanser, a body wash, a lotion, a beauty lotion, an essential oil, an emulsion, a cream, a gel, a tooth powder, a toothpaste, a mouth wash, a whitening liquid, or a deodorant.

9. A food product comprising the carbonic acid and magnesium-substituted hydroxyapatite according to claim 1.

10. The food product according to claim 9, comprising the carbonate and magnesium-substituted hydroxyapatite in a concentration of from 0.001 wt% to 15 wt%.

11. Food product according to claim 9, characterized in that it is a beverage, dairy product, edible oil, sauce, ice cream, soup, delicatessen, pet food or supplement.

12. A method for producing a hydroxyapatite substituted with magnesium and carbon dioxide, the hydroxyapatite being a hydroxyapatite in which a part of calcium is substituted with magnesium and a part of phosphate group is substituted with carbonate group, the hydroxyapatite being composed of primary particles in a non-aggregated state, the primary particles having a particle diameter of 5nm or more and 60nm or less, the method comprising the steps of:

A step of preparing a mixed suspension containing magnesium hydroxide and calcium hydroxide, a step of preparing an aqueous phosphoric acid solution, and a step of mixing the mixed suspension and the aqueous phosphoric acid solution in the presence of carbon dioxide or a carbonate to cause a neutralization reaction and obtain a suspension containing the carbonic acid and magnesium-substituted hydroxyapatite composed of initial particles in a non-aggregated state.

13. A method for producing a hydroxyapatite substituted with magnesium and carbon dioxide, the hydroxyapatite being a hydroxyapatite in which a part of calcium is substituted with magnesium and a part of phosphate group is substituted with carbonate group, the hydroxyapatite being composed of primary particles in a non-aggregated state, the primary particles having a particle diameter of 5nm or more and 60nm or less, the method comprising the steps of:

A step of preparing a first solution containing a magnesium salt and a calcium salt, a step of preparing a second solution containing a phosphate, and a step of mixing the first solution and the second solution in the presence of carbon dioxide or a carbonate to cause a neutralization reaction and obtain a suspension containing the carbonic acid and magnesium-substituted hydroxyapatite composed of initial particles in a non-aggregated state.

14. A method for producing a cosmetic containing a hydroxyapatite substituted with carbonic acid and magnesium, the hydroxyapatite being a hydroxyapatite in which a part of calcium is substituted with magnesium and a part of phosphate group is substituted with carbonate group, and being composed of primary particles in a non-aggregated state, the primary particles having a particle diameter of 5nm to 60nm, the method comprising the steps of:

a step of obtaining a suspension containing said carbonic acid and magnesium substituted hydroxyapatite by the method of claim 12, and a step of containing said suspension in a cosmetic.

15. A method for producing a food containing a hydroxyapatite substituted with carbonic acid and magnesium, the hydroxyapatite being a hydroxyapatite in which a part of calcium is substituted with magnesium and a part of phosphate group is substituted with carbonate group, and being composed of primary particles in a non-aggregated state, the primary particles having a particle diameter of 5nm or more and 60nm or less, the method comprising the steps of:

A step of obtaining a suspension containing said carbonic acid and magnesium substituted hydroxyapatite by the method of claim 12, and a step of containing said suspension in a food product.