JPH05123387A - Deodorant and its manufacture - Google Patents

Abstract

PURPOSE:To provide a deodorant whose deodorizing effect is superior to that of the conventional deodorant, by making a tea extract have complexly citric acid and ascorbic acid if desired. CONSTITUTION:Tea is administered with extraction treatment by using an extracting agent of a weak base nature, and citric acid and if desired, ascorbic acid are added to an extraction liquid thus obtained, and the 1st extraction liquid of a weak acid nature is prepared. Next, an effective element in the 1st extraction liquid is adsorbed to an absorption material by bringing the 1st extraction liquid into contact with the adsorption material, and the 2nd extraction liquid that consists of its remaining portion, is prepared. And, the effective element is extricated from the adsorption material that has finished absorption, and recovered, and a deodorant is made by mixing the adsorption- recovery element and the 2nd extraction liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorant containing a tea leaf extract as an active ingredient, and more particularly to a deodorant having improved deodorant properties and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, various methods have been known as deodorizing methods. They are roughly classified into a masking method, a chemical deodorizing method, a physical adsorption method and a biological deodorizing method. Can be divided into four types.

Explaining the above four kinds of deodorizing methods in terms of deodorizing mechanism, the masking method is a method using a fragrance, and the chemical deodorizing method is a method utilizing oxidation, reduction, neutralization and addition reaction. .. Further, the physical adsorption method is a method of adsorbing and removing a substance that is a source of odor with a porous substance such as activated carbon or silica gel, and the biological deodorizing method is a deodorizing method using microorganisms or enzymes.

By the way, in recent years, as the deodorant, an active ingredient of an extract of theaceae plant containing tea trees has been attracting attention, and the deodorizing action of this tea extract is chemical in the above deodorant method. It is considered to belong to the deodorizing method, and the main deodorizing action is
It is presumed to be caused by polyphenols (catechin, tannins) and flavonoids. In particular, it is well known that a substance having a phenol group has a property of forming many complex compounds and easily binds to hydrogen sulfide, amines and the like.
Various deodorants using a tea extract have been conventionally known, but most of them are those using an active ingredient of green tea.

It is an object of the present invention to provide a deodorant having an excellent deodorizing effect as compared with conventionally known deodorants, and an efficient and economically advantageous method in the manufacturing process. And

[0006]

That is, the deodorant according to the present invention is characterized in that a tea extract is combined with citric acid and optionally ascorbic acid.

Further, the method for producing a deodorant according to the present invention comprises:
The tea is subjected to extraction treatment with a weakly basic extractant, and citric acid and optionally ascorbic acid are added to the obtained extract to prepare a weakly acidic first extract, and then the first extract is prepared.
The active ingredient in the first extract is adsorbed on the adsorbent by bringing the extract into contact with the adsorbent to prepare a second extract consisting of the rest, and the active ingredient is extracted from the adsorbed adsorbent. Is desorbed and recovered, and the desorbed and recovered component thus obtained is mixed with the second extract to form a deodorant.

In the deodorant according to the present invention, as will be described later, it is possible to improve the deodorizing effect by using oolong tea as an extraction raw material among teas.

Generally, the types of tea are classified into three types, non-fermented tea (green teas), semi-fermented teas (Chinese teas such as oolong tea) and fermented teas (black teas). Semi-fermented tea is subdivided into weakly fermented tea (oolong tea), which is produced in a short period of time by enzymes in the tea leaves, and post-fermented tea (puer tea, etc.) produced by long-term deposition by koji mold. Among the various teas mentioned above, polyphenols (catechins, tannins), flavonoids and the like are mentioned as active ingredients particularly involved in deodorization. In the present invention, although it is applicable to all of these tea species, the main deodorizing action of the active ingredient is, for example, flavonoids, those resulting from the binding of a phenol group of tannins with -NH, and flavonoids. , The following groups

[0010]

[Chemical 1] Of -SH, -NH by condensation, polymerization, addition reaction,

[0011]

[Chemical 2] And -SH, -NH neutralization reaction, organic acid and -NH neutralization reaction, sugar malodorous substance absorption, adsorption, dissolution action, tannin esterification, transesterification, etc. It is presumed that the deodorizing effect of tea is exerted by the combined action of chemical and physical actions.

Further, according to the knowledge of the present inventor, the content composition of the active ingredient differs depending on the tea species, and for example, the content of the active ingredient of polyphenols has the following differences.

(Mg / g) Ingredient Green tea Oolong tea Red tea Pu'er tea Flavan3-01s 130.0 mg / g 69.7 56.7 8.5 Proanthocyanidins 5.2 7.2 5.1 0.7 Hydrolysable tannins 13.0 18.2 25.8 5.3 Theasinensins-1.4 12.6-Theaflavins-1.0 10.7 -Total 148.3 87.5 99.9 14.5 Regarding the content of amino acids and vitamins that have antioxidant properties (especially E and C) as substances involved in the chemical reaction, there are differences as shown in the following table depending on the type of tea. Be done.

(% In dry matter) Tea type Total nitrogen Total amino acids Vitamin C Vitamin E _{Gyokuro 6.49% 5.15 186 mg / g 24 mg / g} Green tea Top 5.48 5.25 484 35 ^{Bottom 4.68 2.88 312 56} Top 4.24 3.98 32 42 ^{Oolong tea} Bottom 3.92 0.77 52 − Upper 4.04 1.18 57 − ^Wrapped under ^tea 4.26 1.57 64 − (Note) Vitamin E is mostly α-tocopherol.

Further, the component values of oolong tea for each brand are shown in the following table.

(% Dry matter) Product name Total nitrogen Caffeine Soluble content Crude tannin Free amino acid Wuyi Buddha 2.89% 2.59 40.8 12.93 544.8 mg / 100g Golden katsura 3.43 2.34 39.0 16.03 1004.8 Wuyi cinnamon 3.38 2.21 37.0 11.32 1501.5 The contents of catechins, which are considered to be the components most closely related to the odor effect, are shown for each oolong tea variety.

(% Of dry matter) Variety- ECG- EC- EGCG- EGC Total Top 1.66% 0.29 3.75 0.92 6.62 Mid 1.16 0.33 3.60 1.01 6.10 Bottom 1 1.16 0.22 2.92 1.22 5.52 Bottom 2 0.96 0.21 2.93 1.08 5.21 (Note) -ECG = Epicatechin gallate-EC = Epicatechin-EGCG = Epigallocatechin gallate-EGC = Epigallocatechin The above four catechins are tea catechins that have been conventionally known, but recently a new catechin polymer unique to oolong tea. The following two catechins have been identified as Formula (1)
Is oolong homobisflavan A, and formula (2) is a chemical structural formula of oolong homobisflavan B.

[0018]

[Chemical 3]

[0019]

[Chemical 4] The present inventor, in addition to the knowledge of the component composition of various teas as described above, as a result of further research on the deodorizing effect brought about by the complex combination of the tea extract component and other additive components, the tea extract component On the other hand, it was found that the deodorizing effect is further improved by adding citric acid separately. Furthermore, according to the knowledge of the present inventor, a step of obtaining a tea extract with a weakly basic extractant and then neutralizing it to make it weakly acidic and a method of adding the citric acid during the neutralizing step It has been found that the deodorizing effect is improved by adopting Furthermore, in the present invention, the deodorizing effect is not adversely affected by the combined use of the step of once adsorbing the tea extract component on the adsorbent (particularly the porous adsorbent resin) and further desorbing and collecting the adsorbent. It has been found that the content of active ingredient can be increased.

Of the teas, oolong tea is particularly preferable as the extraction raw material in the present invention because of its excellent effect. Oolong tea has a different component composition from green tea, in particular there is catechin peculiar to oolong tea, and further, due to an enzymatic reaction in the semi-fermentation process, the formation of unknown active ingredients is inferred, and these ingredients are combined. Although it is considered that the deodorizing effect is affected, in the present invention, as described above, the citric acid (and ascorbic acid) added in the neutralization step is catechins and ascorbin which are antioxidants. Acid (vitamin C), tocopherol (vitamin E)
It is recognized that a synergistic effect is exhibited with the active ingredients such as to improve the deodorizing effect.

In the method of the present invention, first, the active ingredient of tea is composed of a weakly basic alcohol such as ethyl alcohol, another organic solvent-based extractant, or a mixed solvent of an organic solvent and an aqueous solvent. Extract with an extractant. The extraction efficiency is improved by making it weakly basic. As the weakly basic salts added in this case, for example, sodium bicarbonate or sodium phosphate can be used. The pH of the extractant is preferably about 7.0 to 8.2. In addition, it is preferable that the extractant contains a lipid component such as soybean lecithin as a protective substance in order to maintain the effect of the deodorizing effect. This lipid component prevents alteration of deodorant components, especially vitamins, and is therefore effective in improving and maintaining the deodorant effect. In the present invention, the extraction step can be carried out, for example, by putting tea leaves in a jacketed closed can with a stirrer and heating with the extractant. However, in this case, in order to increase the extraction efficiency of tocopherol, which is a fat-soluble vitamin, in addition to catechins, it is desirable to use a mixed solvent of water and ethanol as an extractant.

After completion of the extraction, solid-liquid separation is appropriately carried out by a centrifugal separation method or the like, and citric acid and optionally ascorbic acid are added to the extract to prepare a weakly acidic first extract. Since ascorbic acid is contained in the tea extract, it is not always necessary to add it separately, but when oolong tea is used, its content is relatively small, so it is preferable to add ascorbic acid separately. In this case, the range of weak acidity is preferably pH 5.5 to 6.8. Further, the addition of citric acid and ascorbic acid as described above is effective not only for improving the deodorizing effect but also for adjusting the color tone of the deodorant to a good one.

Further, by treating the first extract obtained as described above with an adsorbent, the active ingredient in the first extract is adsorbed on the adsorbent, while the second extract consisting of the remaining part is adsorbed. Prepare the liquid. The adsorbent used in this case is preferably a porous adsorbent resin. By this adsorption step, polyphenols such as catechin are effectively adsorbed.

Next, the adsorbed material that has been adsorbed is washed with an organic solvent such as ethyl alcohol to desorb and elute the adsorbed active ingredient, and the solvent ingredient is removed by evaporation to recover the active ingredient. ..

In this way, the desorbed and recovered component, which is a concentrate in which the content of the active ingredient is increased, and the second extract are mixed, and if necessary, the steps such as decolorization, filtration and concentration are performed. Thus, the deodorant of the present invention is obtained.

[0026]

EXAMPLES The present invention will be described below based on examples, but the present invention is not limited to the description of these examples. Example 1 A small test can was charged with 10 liters of water and 10 kg of 95% ethyl alcohol, heated to 60 ° C., and 15 g of sodium hydrogencarbonate and 10 g of soybean lecithin were added and mixed to dissolve them. The pH of this solution is 7.6 to 8.2, and 500 g of oolong tea leaves are added to this solution to
After extracting for 0 minutes, it is rapidly cooled to 25 ° C., and then solid-liquid separation is performed by a centrifuge. About 10 g of ascorbic acid and about 3 g of citric acid were added to the obtained extract (this is referred to as solution A) to neutralize it, lower the pH to 5.8 to 6.2 to adjust the color tone, and then add water. And make the whole 15 liters. Then, this solution is passed through a column of a porous adsorption resin (PH-20) to adsorb components such as catechin to this, and a treatment solution of about 15
1 liter was obtained (this liquid is called liquid B).

Next, after washing the above porous adsorption resin with 15% ethyl alcohol, 80% ethyl alcohol was passed through the resin.
The adsorbed components such as catechin are desorbed and eluted.
The ethyl alcohol-treated solution thus obtained was evaporated to distill off the alcohol content to obtain 5 liters of a concentrated solution of the residue, and to this concentrated solution, the solution B was added, and water was added to make the whole. After making 20 liters, decolorize with activated carbon,
The deodorant was obtained by filtering and concentrating and adjusting the concentration to a predetermined level. Example 2 About 10 parts of ascorbic acid was added to the extract (solution A) obtained in Example 1.
g, citric acid about 2 g, and tartaric acid about 1 g are added, and p
The H is adjusted to 5.8 to 6.2, hospitane C is further added as a stabilizer, and further water is added to make the whole 15 liters.

Next, after decolorizing this liquid with activated carbon, filtration,
After concentration, the concentration was adjusted to a predetermined value to obtain a deodorant. Example 3 40 liters of water was placed in a small test canister and heated to 70 ° C., and 30 g of sodium hydrogen carbonate was added to and dissolved therein. The pH of this solution is 8.0, and 1 kg of oolong tea is added to this solution, which is extracted for 30 minutes, rapidly cooled to 25 ° C., and then solid-liquid separated by a centrifuge. About 20 g of ascorbic acid and about 5 g of citric acid are added to the obtained extract for neutralization, the pH is lowered to 6.0 to adjust the color tone, and water is further added to make 70 liters.

Next, this liquid was added to a porous adsorption resin (PH-2
It was passed through the column of 0) to adsorb polyphenol and the like to obtain about 60 liters of the treatment liquid (this liquid is referred to as liquid A).

Next, the porous adsorption resin is washed with 15% ethyl alcohol, and then 80% ethyl alcohol is passed through to desorb and elute polyphenol and the like. The ethyl alcohol-treated solution was evaporated to remove the alcohol content, to obtain 10 liters of the concentrated residue, which was added to the solution A obtained above and water was added to make 100 liters, followed by decolorization with activated carbon and filtration. Then, it was concentrated and adjusted to a predetermined concentration to obtain a deodorant. Comparative test The deodorant effect of the deodorant obtained by the above-mentioned examples of the present invention was tested. In this comparative test, the malodorous substances listed in the table below were used, and the deodorizing rate was measured with a detector tube. As a comparative example, a deodorant containing the following commercially available green tea extract as a main component was used.

Comparative Example 1: Fresh Shiramatsu (manufactured by Shiraimatsu Shinyaku Co., Ltd.) Comparative Example 2: Sankaakin (manufactured by Mitsui Norin Co., Ltd.) Comparative Example 3: Sanflavone (manufactured by Taiyo Kagaku Co., Ltd.) Also, as an odor substance for testing. Used four substances of ammonia, trimethylamine, hydrogen sulfide and methyl mercaptan.

As the test device, a Kitagawa type detector tube is used.
The residue concentration was examined by performing a stepwise measurement from 2 minutes to 60 minutes under reduced pressure, and the deodorizing rate was obtained. The results are shown in Tables 1 to 4.

Table 1 (Ammonia deodorizing rate) Elapsed time Sample 2 minutes 5 minutes 10 minutes 30 minutes 60 minutes Example 1 79 82 95 98 99 Example 2 77 80 94 98 99 Example 3 75 80 96 98 99 Comparison Example 1 70 78 88 97 98 Comparative Example 2 72 76 85 96 98 Comparative Example 3 70 74 84 95 97 Table 2 (Deodorization rate of trimethylamine) Elapsed time Sample 2 minutes 5 minutes 10 minutes 30 minutes 60 minutes Example 1 81 92 95 97 99 Example 2 83 89 96 96 99 Example 3 85 90 97 98 99 Comparative Example 1 80 88 92 96 98 Comparative Example 2 78 86 90 95 97 Comparative Example 3 72 80 88 92 95 Table 3 (Discharge of hydrogen sulfide Odor rate) Elapsed time Sample 2 minutes 5 minutes 10 minutes 30 minutes 60 minutes Example 1 35 46 56 63 68 Example 2 38 43 58 59 60 Example 3 44 52 60 62 66 Comparative Example 1 10 12 13 14 16 Comparative Example 2 15 18 20 26 30 Comparative Example 3 16 20 22 28 32 Table 4 (Deodorization rate of methyl mercaptan) Elapsed time Sample 2 minutes 5 minutes 10 minutes 30 minutes 60 minutes Example 1 75 81 90 97 98 Example 2 76 80 89 94 91 Example 3 80 85 92 95 97 Comparative Example 1 74 80 90 94 95 Comparative Example 2 78 82 90 94 95 Comparative Example 3 65 70 88 90 92 As is clear from the results of the above comparative tests, the deodorant according to the present invention is a deodorant containing a conventional tea extract as an active ingredient. The deodorant effect is superior to that of the agent, and in particular, the deodorant of the present invention is also excellent in immediate effect in that the deodorant effect tends to be exhibited within a short period of time.

Since the deodorant according to the present invention has excellent deodorant properties and contains tea extract as an active ingredient, it is used as a confectionery such as gum and candy, processed livestock products, and processed marine products. It is useful as a deodorant for a wide range of applications including food products, building materials, textile products, refrigerators, automobile interior parts, sanitary products, and wastewater treatment.

Claims (9)

[Claims] 1. A deodorant characterized by comprising citric acid and optionally ascorbic acid in a complex manner with respect to an extract of tea. 2. The deodorant according to claim 1, which further contains tartaric acid. 3. The deodorant according to claim 1, wherein the tea is oolong tea. 4. Tea is extracted with a weakly basic extractant, and citric acid and optionally ascorbic acid are added to the resulting extract to prepare a weakly acidic first extract, By contacting the first extract with an adsorbent, the active ingredient in the first extract is adsorbed on the adsorbent to prepare a second extract consisting of the rest of the adsorbent, A method for producing a deodorant, which comprises desorbing and recovering the active ingredient, and mixing the desorbed and recovered component thus obtained with the second extract to obtain a deodorant. 5. The method according to claim 4, wherein lecithin is added to the first extract. 6. The method according to claim 4, wherein tartaric acid is further added to the first extract. 7. The method of claim 4, wherein the tea is oolong tea. 8. The method according to claim 4, wherein a porous adsorption resin is used as the adsorbent. 9. A step of filtering the mixed solution of the desorbed and recovered component and the second extract after further decolorizing with activated carbon,
The method of claim 4.