JP2006249599A - Fiber deodorant, fiber deodorant composition, and fiber deodorant method - Google Patents

Abstract

Disclosed is a fiber deodorant which suppresses the production of unpleasant human body odor components such as isovaleric acid and caproic acid and continuously exhibits the effect.
A fiber deodorant is constituted by containing, as an active ingredient, a plant extract having an effect of suppressing the production of lower fatty acids by skin resident bacteria. The plant that is the source of the plant extract is preferably at least one plant selected from oyster leaves, Hypericum perforatum, Hawthorn, Bodaige, Rosemary, Honeysuckle and Horsetail.
[Selection figure] None

Description

  The present invention relates to a fiber deodorant, a fiber deodorant composition, and a fiber deodorization method comprising as an active ingredient a plant extract that suppresses the production of human unpleasant body odor components such as isovaleric acid and caproic acid. A fiber deodorant that exhibits a body odor control effect by containing a plant extract that inhibits the body odor generation pathway of skin resident bacteria, a fiber deodorant composition containing this fiber deodorant, and a lower fatty acid produced by skin resident bacteria It is related with the fiber deodorizing method using the plant extract which has the effect which suppresses the production | generation of odor.

  Conventionally, as a method for preventing body odor such as sweat odor, a deodorizing technique and a masking technique have been mainstream (see, for example, Patent Document 1). In recent years, a method for suppressing the generation of body odor has been put into practical use by a sterilization technique for sterilizing causative bacteria that produce a substance causing body odor. However, the deodorizing technique and the masking technique are not satisfactory in terms of the degree of effect and sustainability. Moreover, even if sterilization is performed, an enzyme involved in the generation of odor remains on the skin, so that it is difficult to say that the deodorant technique by sterilization has a satisfactory deodorizing effect as well as the sterilization technique. Furthermore, since the said sterilization technique also sterilizes skin resident bacteria other than odor-producing bacteria, there is a concern that the barrier function of the skin is lowered (for example, see Non-Patent Document 1).

  Therefore, based on the finding that the causative substances of body odors such as lower fatty acids are generated by metabolism of skin resident bacteria, which has recently been clarified, by inhibiting enzymes involved in the metabolic pathway of skin resident bacteria, It has been studied to suppress the generation of causative substances and suppress the generation of body odor.

  Specifically, for example, (Z) -3,4,5,6,6-pentamethylhepta can be used as an inactivating agent for microorganisms that cause malodor due to corynebacteria that are a kind of skin resident bacteria. The use of fragrance ingredients such as -3-en-2-one, diethyl-cyclohex-2-en-1-one and dimethyl-cyclohex-2-en-1-one, citronellol, etc. was studied, It has been reported that the production of lower fatty acids can be suppressed without sterilization (see, for example, Patent Document 2).

  In addition, the use of aromatic components such as benzaldehyde, benzyl benzoate, cinnamic aldehyde, and ethyl vanillin has been studied as an ester degradation inhibitor that suppresses the production of lower fatty acids, which are said to be the cause of human body odor, by resident skin bacterium. It has been reported that the generation of unpleasant body odor can be suppressed without sterilizing skin resident bacteria (for example, see Patent Document 3).

  Furthermore, leucine dehydrogenase involved in the isovaleric acid production pathway, which is one of the lower fatty acids that cause body odor and is considered to be the main odor substance of sweat odor (see Non-Patent Document 2, for example). For example, the use of plant extracts and eugenol, such as Mizuki, Hakunetsugi, Shishiakuchi, Adek, Kanrenboku, Ezomisohagi, has been studied, and the deodorizing effect and high safety of these leucine dehydrogenase inhibitors have been reported. (For example, see Patent Document 4).

  As described above, highly safe plants that have a deodorizing effect by inhibiting the production pathway of highly safe aroma components, fragrance components, and lower fatty acids that suppress the generation of body odor without sterilizing skin resident bacteria. The use of extracts has been proposed.

  On the other hand, there are hardly any fiber deodorants that can impart to the fiber the effect of suppressing the generation of body odor by inhibiting the production pathway of lower fatty acids.

JP 2004-65312 A JP-T-2002-519368 JP 2002-87973 A JP 2000-191511 A Katsuyuki Takeda, “The New Knowledge of Skin Defense Function: Role of Acnes and Epidermidis as Permanent Bacteria”, Journal of the Japan Cosmetic Science Society, 2003, Vol. 27, No. 1, p. 29-32

  However, since the inactivating agent for microorganisms that generate malodors including corynebacteria is a fragrance component, it has high volatility and low retention, so that it is satisfactory in terms of body odor suppression and sustainability. Is not obtained. Therefore, it is not considered that an excellent effect can be exhibited even if this inactive agent is used as a fiber deodorant.

  Moreover, in the said ester degradation inhibitor, since the production | generation suppression of the lower fatty acid which is a main odor substance of body odor is inadequate, the effect which can be satisfied in terms of suppression of body odor is not acquired. Therefore, even if this ester decomposition inhibitor is used as a fiber deodorant, it cannot be considered that an excellent effect can be exhibited.

  Furthermore, since the inhibitor of leucine dehydrogenase is insufficient in suppressing the production of isovaleric acid, a satisfactory effect in terms of suppressing body odor has not been obtained. Therefore, even if this leucine dehydrogenase inhibitor is used as a fiber deodorant, it is not considered that an excellent effect can be exhibited.

  The present invention has been made in view of the above, and an object of the present invention is to suppress the generation of unpleasant human body odor components such as isovaleric acid and caproic acid, and to continuously demonstrate the effects thereof. Is to provide an agent.

  In order to solve the above problems, the present inventors have conducted extensive research on the lower fatty acid production-inhibiting action of various plant extracts. As a result, lower fatty acids that are the main causative substances of body odor are added to specific plant extracts. As a result, the present invention has been completed.

  That is, the fiber deodorant of the present invention is a fiber deodorant containing a plant extract having an effect of suppressing the production of lower fatty acids as an active ingredient. By blending at least one kind of plant extract selected from oysters, hypericum perforatum, hawthorn, bodaige, rosemary, honeysuckle and horsetail, the plant extract suppresses the production of lower fatty acids and has an unpleasant body odor. It is characterized by providing a fiber deodorant capable of suppressing generation. Moreover, it is preferable that the fiber deodorizer of this invention does not show a bactericidal action with respect to skin resident bacteria.

  The “fiber deodorant” as used in the present invention has an effect of suppressing the production of lower fatty acids by skin resident bacteria, and is added to the target composition to give an effect of suppressing body odor. It refers to an agent for adjusting the composition. By treating a fiber, clothing, etc. using the fiber deodorant composition containing the fiber deodorant of this invention, the fiber, clothing, etc. which can suppress body odor continuously can be obtained.

  Moreover, this invention relates to the fiber processing method using the extract of the above plants or plant origin.

  INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a highly safe fiber deodorant and fiber deodorant composition containing an active ingredient that can effectively suppress the production of unpleasant body odor components such as isovaleric acid and caproic acid. .

  Furthermore, according to the present invention, it is possible to provide a fiber deodorization treatment method that can effectively suppress generation of an unpleasant body odor component of human.

Hereinafter, embodiments of the present invention will be described.
The fiber deodorant of the present invention is characterized by containing, as an active ingredient, a plant extract having an effect of suppressing the production of lower fatty acids by skin resident bacteria.

  The lower fatty acids are the main causative substances of body odor and are known to be produced by metabolism of skin resident bacteria. Therefore, the fiber deodorant of the present invention containing a plant extract capable of suppressing the production of lower fatty acids due to metabolism of skin resident bacteria as an active ingredient effectively suppresses unpleasant odor derived from body odor emitted from the fiber. Can do.

  As metabolic pathways related to lower fatty acid production in skin resident bacteria, metabolic pathways by ester decomposition and metabolic pathways of leucine dehydrogenation are known, but other metabolic pathways are unknown. As a fiber deodorant that can effectively suppress unpleasant body odor, it is important to have the effect of suppressing the production of lower fatty acids, which are the main causative substances of body odor, regardless of the presence or absence of such an inhibitory action on metabolic pathway .

  The lower fatty acid production inhibition rate of the plant extract contained in the fiber deodorant of the present invention is 75 to 100% in the lower fatty acid production system using Propionibacterium acnes, or Corynebacterium It is preferable that it is 90 to 100% in the isovaleric acid production system using xylosis (Corynebacterium xerosis). Although it is not clear what metabolic pathway the plant extract contained in the fiber deodorant of the present invention blocks, or what mechanism of action it is, it is a high-level production of lower fatty acids themselves that are the main cause of body odor. Has a suppressive effect.

The lower fatty acid production system using Propionibacterium acnes is 1 × 10 ⁸ Propionibacterium acnes in Tricaproin as shown in Examples 1 to 5 described later. / ML refers to a reaction system that produces lower fatty acids by incubating at 37 ° C. for 6 hours. It is preferable that the plant extract contained in the fiber deodorant of the present invention exhibits a high lower fatty acid production inhibitory effect of 75 to 100% in this system.

  The isovaleric acid production system using Corynebacterium xerosis is, as shown in Examples 6 to 8 described later, collected from healthy males and immediately subjected to filter sterilization to 5 ml of sweat. This refers to a reaction system in which about 8 LOG CFU / ml of um xerolysis is inoculated and cultured at 37 ° C. for 6 hours to produce isovaleric acid. It is preferable that the plant extract contained in the fiber deodorant of the present invention exhibits a high isovaleric acid production inhibitory effect of 90 to 100% in this system.

  Among the plant extracts contained in the fiber deodorant of the present invention, as shown in the lower fatty acid production system using the aforementioned Propionibacterium acnes (Propionibacterium acnes) 75-100% lower fatty acid production inhibition rate, Preferably, at least one kind of plant extract selected from oysters, hypericum perforatum, hawthorn, bodaiges and rosemary is used. The plant used for extraction of the plant extract is not particularly limited in its application part, but from the viewpoint of exerting its effectiveness, oysters are leaves, hypericum is above-ground parts, hawthorn is flowers, leaves or fruits, It is preferable to use flowers or leaves, rosemary leaves or flowers and leaves, honeysuckle flower buds, and horsetails using the above-ground part.

  Among the plant extracts contained in the fiber deodorant according to the present invention, the above-mentioned corynebacterium xerosis (Corynebacterium xerosis) in the isovaleric acid production system using 90-100% lower fatty acid production inhibition rate Preferably, at least one plant extract selected from hypericum perforatum, honeysuckle and horsetail is included. The plant used for the extraction of the plant extract is not particularly limited in its application part, but from the viewpoint of exerting its effectiveness, it is preferable to use the above-ground part for Hypericum perforatum, the flower part for honeysuckle, and the above-ground part for Sugiina. .

  As the plant extract, an extract obtained by extracting a product that has been cut or pulverized into an appropriate size after being dried or dried, or a component that has been further separated and purified. Can be used. The extract can be obtained by solvent extraction by a conventional method. If the extraction solvent is harmless in use, the extract may be used as it is as a fiber deodorant or may be used as a diluted solution diluted with an appropriate solvent. Further, the plant extract may be made into a concentrated extract, may be made into a dry powder by freeze-drying, or may be prepared in a paste form. Moreover, it can also carry | support and conjugated with organic substances, such as gelatins, agar, and sodium alginate, and inorganic substances, such as sodium silicate and calcium silicate, as needed.

  Examples of the extraction solvent used for obtaining the plant extract include generally used organic solvents such as methanol, ethanol, butanol, hexane, heptane, cyclohexane, ethyl acetate, acetone, monoterpenes, glycerin, 1,3- Examples include glycols such as butylene glycol, dipropylene glycol, and propylene glycol, and water. One of these may be used alone, or two or more thereof may be mixed and used. Among these solvents, ethanol, water, 1,3-butylene glycol, monoterpenes, and mixed solvents thereof are particularly desirable from the viewpoint of extraction efficiency.

  In addition, the said extraction process can be performed by conventional methods, such as a cold immersion, digestion, a heating recirculation | reflux, and a percolation method. In addition to solvent extraction, extracts obtained by supercritical extraction performed by steam distillation or carbon dioxide gas in a supercritical state can also be used. In supercritical extraction, hexane, ethanol or the like can be used as an extraction aid.

  The extract can be separated and purified by activated carbon treatment, liquid-liquid distribution, column chromatography, liquid chromatography, or the like. Other extraction conditions include extraction temperature, extraction pH, etc., but there are no particular limitations unless it is extremely high or low temperature or extremely acidic or alkaline.

  At least one plant extract selected from oysters, hypericum perforatum, hawthorn, boletus, rosemary, honeysuckle and horsetail contained in the fiber deodorant of the present invention adjusts the blending amount and reduces the generation pathway of lower fatty acids. By inhibiting, the unpleasant odor derived from the body odor emitted from a fiber can be suppressed effectively.

  The fiber deodorant of the present invention preferably does not show bactericidal action against skin resident bacteria. By appropriately adjusting the blending ratio of the plant extract in the fiber deodorant of the present invention, without showing a bactericidal action against skin resident bacteria, has a high production inhibitory effect of lower fatty acids themselves, The effect of suppressing body odor can be exhibited. The plant extract is preferably blended in an amount of 0.1% by mass or less, more preferably 0.05% by mass or less, in terms of solid matter in the fiber deodorant of the present invention.

  The fiber deodorant composition of this invention contains the said fiber deodorizer. Although the specific compounding quantity of the said plant extract in the fiber deodorant composition of this invention is suitably selected according to the dosage form etc. of a fiber deodorant composition, generally 0. 0001 to 5.0% by mass (hereinafter simply referred to as “%”) is preferably blended, and preferably 0.0001 to 0.5%. This is because if the blending amount is less than 0.0001%, the effects of the present invention cannot be exhibited, and if it is 5.0% or more, problems such as coloring of the fibers may occur.

  In the fiber deodorant composition of the present invention, known blending components can be added according to the type of fiber. For example, surfactants, oils, alcohols, moisturizers, thickeners, preservatives, chelating agents, pH adjusters, fragrances, pigments, UV absorbers / scatterers, vitamins, water, etc. can do. In addition to the above active ingredients, the fiber deodorant composition of the present invention can be blended with commonly used deodorants, preservatives, antioxidants and the like.

  Since the fiber deodorant composition of this invention can provide a fiber or clothing with the deodorizing effect, it is suitable as a composition for fiber processing or clothing processing.

  The fiber treatment method of the present invention uses a plant extract having the above-described lower fatty acid production inhibitory effect. As a method for adding the plant extract to the fiber, any method can be used as long as it is a commonly used method. As the fiber treatment method, for example, the fiber extract can be impregnated with the plant extract and then dried. Also, fiber using an organic binder such as acrylic or latex, or an inorganic binder such as silica or smectite after kneading into the raw yarn, treatment in the spinning process, additional treatment at the time of dyeing or after dyeing, or after entering the fabric state The method of adding to can also be mentioned. Examples of fibers used in the fiber treatment method of the present invention include silk, cotton rayon, and nylon.

  Hereinafter, the present invention will be described in more detail based on examples. In addition, this invention is not limited to the following Example.

[Preparation Example]
Preparation of extract: oysters are dried leaves, Hypericum perforatum is above ground, hawthorn is flowers, leaves or fruits, boudilla is flowers or leaves, rosemary is leaves or flowers and leaves, honeysuckle is dried on florets, sugi are dried above ground Then, it was pulverized into a coarse powder, and 10 g of each was immersed in 100 mL of 100% ethanol and extracted at room temperature for 5 days. Subsequently, the extract obtained by filtering the crude powder after extraction was concentrated under reduced pressure to obtain an extract.

[Experimental Examples 1 to 5: Lower fatty acid production inhibition test]
Various plant extracts obtained according to the above preparation examples were added to 2.5 mL of 0.2% tricaproin-0.05M phosphate buffer pH 6.0 (manufactured by SIGMA) so that the final concentration was 250 μg / mL. Thereafter, about 1 × 10 ⁸ cells / mL of Propionibacterium acnes (ATCC) were inoculated and cultured at 37 ° C. for 6 hours in an anaerobic state. After completion of the culture, the number of viable bacteria was measured, 0.5 mL of 10% sulfuric acid and 3 mL of diethyl ether were added to the culture solution, and the amount of caproic acid extracted in the ether layer was measured by gas chromatography. Subsequently, the production | generation suppression rate (%) of the caproic acid was computed by making the comparative example 2 which does not contain the plant extract mentioned later into control. The calculation results and the results of examining the bactericidal action are shown in “Table 1” below. Note that the bactericidal action here refers to a modified GAM agar medium supplemented with a test substance, inoculated with skin resident bacteria (Propionibacterium acnes), cultured at 37 ° C. for 6 hours in an anaerobic state, and then subjected to control. This means that the number of viable bacteria is reduced to 1/100 or less.

[Comparative Examples 1 and 2]
As Comparative Example 1, the final concentration of the gentian extract obtained according to the preparation example described above was adjusted to 250 μg / mL in 2.5 mL of 0.2% tricaproin-0.05M phosphate buffer pH 6.0 (manufactured by SIGMA). And tested as in Examples 1-5. As Comparative Example 2, a control containing no plant extract (0.2% tricaproin-0.05M phosphate buffer pH 6.0 (manufactured by SIGMA) only) was tested in the same manner as in Examples 1-5. The results are shown in “Table 2” below.

  As shown in the above-mentioned “Table 1”, oyster leaves, Hypericum perforatum, Hawthorn, Bodaige, and Rosemary extract were found to have an effect of suppressing the generation of caproic acid. Moreover, in each Example, since the bactericidal action was not recognized, this action was considered to have occurred as a result of suppressing the odor generation pathway.

[Experimental examples 6 to 8: Production inhibition test of isovaleric acid]
Various plant extracts obtained according to Preparation Example 1 were added to 5 mL of sweat collected from healthy boys and immediately filter sterilized to a final concentration of 250 μg / mL. Thereafter, about 8 Log CFU / mL of Corynebacterium xerosis (Fermentation Laboratory) was inoculated and cultured at 37 ° C. for 6 hours. After completion of the culture, the number of viable cells was measured, 0.5 mL of 10% sulfuric acid and 3 mL of diethyl ether were added to 2 mL of the culture solution from which the bacteria were removed by filtration, and the amount of isovaleric acid extracted in the ether layer was gas chromatographed. Measured graphically. Subsequently, the production | generation suppression rate (%) of isovaleric acid was computed by setting the comparative example 6 which does not contain the plant extract mentioned later as control. The calculation results and the results of examining the bactericidal action are shown in “Table 3” below. The bactericidal action here refers to SCD medium containing 0.1% Tween 80, inoculated with a resident skin bacterium (Corynebacterium xerosis) in a test substance added, and cultured at 37 ° C. for 6 hours. On the other hand, it refers to the action of reducing the number of viable bacteria to 1/100 or less.

[Comparative Examples 3 and 4]
As Comparative Example 3, the test was conducted in the same manner as in Examples 6 to 8 except that a rehmannia glutinosa extract was added. As Comparative Example 4, a control containing no plant extract (only sweat subjected to filter sterilization) was tested in the same manner as in Examples 6 to 8, and the results are shown in Table 3 below.

  As shown in the above-mentioned “Table 3”, each of the extracts of honeysuckle, Hypericum perforatum, and Japanese horsetail was found to have an effect of suppressing the generation of isovaleric acid. Moreover, in each Example, since the bactericidal action was not recognized, this action was considered to have occurred as a result of suppressing the odor generation pathway.

[Examples 9 to 15: Skin shirt deodorization test]
A fiber deodorant composition was prepared by the following method. To 563 g of water, 140 g of aluminosilicate “Lionite SF” (trade name, manufactured by Lion Corporation) and 7 g of a cationic surfactant (lauryltrimethylammonium chloride) were added and stirred at room temperature for 1 hour. Thereafter, as shown in Examples 9 to 15 of the following "Table 4", 10 g of each extract of oyster leaves, Hypericum perforatum, Hawthorn, Bodaiju, Rosemary, Honeysuckle, and Japanese horsetail was added, or 10 g mixed, The mixture was further stirred for 1 hour to prepare a dispersion of the plant extract.

  Next, 6% of this dispersion, 1.5% of “Boncoat AB885” (trade name, Dainippon Ink Co., Ltd. acrylic resin) and 92.5% of water are mixed to prepare a fiber deodorant composition. did. A commercially available skin shirt was immersed in the fiber deodorant composition, dehydrated with a roller, and then dried to prepare a skin shirt for evaluation.

  Next, 20 adult boys were divided into 4 groups of 5 each, and the skin shirts produced in Examples 9 to 15 were worn at 9 am in each group. The subject applied an exercise load of 30 minutes with an ergometer in the morning and afternoon. Each skin shirt was collected at 5 pm on the same day, and kept at 37 ° C. for 1 hour, and then the odor of the skin shirt was evaluated by a professional judge. Odor determination criteria are shown below. The evaluation score is expressed as an average value of five people in each group, and the result is shown in the following “Table 4”.

<Odor intensity>
0: Odorless 1: Scent that can be finally detected 2: Weak scent that understands what odor 3: Smell that can be easily detected 4: Strong odor 5: Strong odor

[Comparative Examples 5 and 6: Skin shirt deodorization test]
The test was conducted in the same manner as in Examples 9 to 15 except that only 10 g of benzalkonium chloride as Comparative Example 5 and only 10 g of water as Comparative Example 6 were added to the common composition, and the results are shown in Table 4 below.

  As shown in the above-mentioned “Table 4”, oyster leaves, Hypericum perforatum, Hawthorn, Bodaige, Rosemary, Honeysuckle and Horsetail extract were found to have the effect of suppressing the odor of skin shirts.

  Furthermore, the detergent “Top” (trade name, manufactured by Lion Co., Ltd.) is used and conforms to the method of JIS L0217103. The evaluation skin shirt was washed. Regarding the skin shirts of Examples 9 to 15 after washing 10 times, when the skin shirt odor determination test was performed in the same manner as described above, the odor intensity of any skin shirt was 3.1 or less, and the deodorizing effect was sustained. It was.

[Example 16]
According to the methods prepared in Examples 9 to 15, fiber deodorant compositions were prepared by adding 3 g each of Hypericum perforatum extract, rosemary extract, and oyster leaf extract. After the rayon nonwoven fabric was immersed in the adjusted fiber deodorant composition, it was dehydrated and dried to prepare deodorant fibers. A skin shirt was produced using this deodorizing fiber, and as a result of evaluating the odor intensity in the same manner as in Examples 9 to 15, the odor intensity was 3.1 or less.

[Example 17]
In accordance with the methods prepared in Examples 9 to 15, fiber deodorant compositions were prepared by adding 2 g each of Hypericum perforatum extract, Hawthorn extract, Bodaiju extract, Honeysuckle extract, and Japanese horsetail extract. A nylon fiber cloth was dipped in the fiber deodorant composition, and then dehydrated and dried to prepare a deodorant fiber. A skin shirt was produced using this deodorizing fiber, and as a result of evaluating the odor intensity in the same manner as in Examples 9 to 15, the odor intensity was 3.1 or less.

[Example 18: Product formulation example]
[Prescription Example 1]
A softener for clothing having a fiber deodorizing effect was prepared by the following method. ARCARD 2HT-75 (manufactured by Lion Akzo) 15 parts, polyether-modified silicone KF6016 (manufactured by Shin-Etsu Chemical Co., Ltd.), calcium chloride (manufactured by Tokuyama Corporation) 0.3 part, ethylene glycol (manufactured by Mitsubishi Chemical Corporation) 1 part , C.I. I. 0.001 part of Direct Blue 86 (manufactured by Sumitomo Chemical Co., Ltd.), 0.0001 part of isothiazolone (manufactured by Rohm and Haas), and perfume composition C 0 described in Tables 8 to 17 described in JP-A No. 2003-105668 Japanese Patent No. 2628512 has a composition comprising 5 parts, 0.1 part of Hypericum perforatum extract, 0.1 part of hawthorn extract, 0.1 part of rosemary extract, 0.1 part of honeysuckle extract, and the remainder of water. It was prepared according to the method described in 1. When the fabric softening finish thus prepared was subjected to a fiber deodorization treatment, clothing was found to have a deodorizing effect.

[Prescription Example 2]
A softener for clothing having a fiber deodorizing effect by the following method was prepared. 15 parts of cationic surfactant (cationic surfactant described in JP-A-2003-12471, Example 1), 3 parts of dimethyl silicone BY22-050A (manufactured by Toray Dow Corning), calcium chloride (manufactured by Tokuyama Corporation) ) 0.3 parts, ethylene glycol (Mitsubishi Chemical Corporation) 1 part, C.I. I. Acid Red 138 (Nippon Kayaku Co., Ltd.) 0.001 part, Isothiazolone (Rohm and Haas Co., Ltd.) 0.0001 part, Perfume Composition A 0 described in Tables 8 to 17 described in JP-A No. 2003-105668 A composition comprising 5 parts, 0.2 parts of Hypericum perforatum extract, 0.1 part of hawthorn extract, 0.1 part of honeysuckle extract, and the remainder of water is applied according to the method described in Japanese Patent No. 2628512. Prepared. When the fabric softening finish thus prepared was subjected to a fiber deodorization treatment, clothing was found to have a deodorizing effect.

  As described above, the fiber deodorant of the present invention contains, as an active ingredient, a plant extract that suppresses lower fatty acids, which are the major components of human unpleasant body odor. Therefore, it is suitable for the production of a fiber deodorant composition that continuously suppresses an unpleasant body odor of human beings, and further suitable for the production of a fiber or clothing imparted with a deodorizing effect.

Claims (8)

  A fiber deodorant comprising, as an active ingredient, a plant extract having an effect of suppressing the production of lower fatty acids by skin resident bacteria.   The fiber deodorant according to claim 1, wherein the lower fatty acid production inhibition rate of the plant extract is 75 to 100% in a caproic acid production system using Propionibacterium acnes. .   3. The fiber deodorant according to claim 1, wherein the plant source of the plant extract is at least one plant selected from oysters, hypericum perforatum, hawthorn, bodaige, and rosemary. .   2. The fiber deodorant according to claim 1, wherein an inhibition rate of lower fatty acid production of the plant extract is 90 to 100% in an isovaleric acid production system using Corynebacterium xerosis. .   5. The fiber deodorant according to claim 1, wherein the plant extract source is at least one plant selected from honeysuckle, Hypericum perforatum, and horsetail.   A fiber deodorant composition comprising the fiber deodorant according to any one of claims 1 to 5.   A fiber deodorization method using a plant extract having an effect of suppressing the production of lower fatty acids by skin resident bacteria.   The fiber deodorization method according to claim 7, wherein the fiber is impregnated with fiber to impart an effect of suppressing the production of lower fatty acids to the fiber.