JP2023072342A - Stationary type aroma agent performance evaluation method - Google Patents

Abstract

An object of the present invention is to provide an evaluation method capable of judging the performance when a fragrance component of a stationary fragrance adheres to interior materials such as wallpaper, floors, curtains and sofa fabrics. A method for evaluating the performance exhibited when the fragrance component of a stationary air freshener adheres to an interior material, wherein a test piece is placed in an atmosphere in which the fragrance ingredient of the stationary air freshener is volatilized, A first step of preparing a test piece with a perfume component attached thereto, a second step of placing the test piece with a perfume component attached thereto prepared in the first step in an atmosphere filled with a bad odor, and a test after the second step. A method of evaluation comprising a third step of evaluating the odor of the piece. [Selection figure] None

Description

TECHNICAL FIELD The present invention relates to a method for evaluating the performance of a stationary fragrance when the fragrance component adheres to an interior material.

In recent years, various bad odors such as body odors have increased in indoor spaces due to the effects of high airtightness in houses and the westernization (meat eating) of eating habits. Fragrances containing perfume ingredients are widely used to create

Traditionally, air fresheners are known to be of stationary type, spray type, aerosol type, and the like. It is widely accepted by consumers because it can produce and sustain

On the other hand, the aromatic agent not only has the fragrant performance of imparting fragrance to the space with the fragrance of the volatilized fragrance, but also has the deodorant performance of masking offensive odors with the fragrance depending on the type of fragrance used. Therefore, it is necessary to properly evaluate the fragrance performance and the deodorant performance in the development of fragrances. In particular, stationary air fresheners not only float in the space, but also adhere to interior materials such as wallpaper, floors, curtains, and sofa fabrics to exert their fragrance and deodorant performance. It is desirable to properly evaluate the fragrant performance and deodorant performance exhibited by the fragrance component of the fragrance agent adhering to the interior material.

Various methods for evaluating the effectiveness of volatilizing agents such as aromatics, deodorants, and deodorants have been reported. For example, the Association of Air Fresheners, Deodorants and Deodorants has created the ``Voluntary Standards for Air Fresheners, Deodorants, and Deodorants for General Consumers,'' which stipulates methods for evaluating the efficacy of air fresheners. In addition, Patent Document 1 proposes a method for evaluating the deodorant performance of a deodorant that is put in a bag containing a substance that emits an odor.

However, conventionally, there has been no report of an evaluation method capable of appropriately determining the fragrance performance and deodorant performance exhibited when a fragrance component volatilized from a stationary fragrance adheres to an interior material.

JP 2019-205631 A

SUMMARY OF THE INVENTION An object of the present invention is to provide an evaluation method capable of judging the performance when a fragrance component of a stationary fragrance adheres to interior materials such as wallpaper, floors, curtains, sofa fabrics, and the like.

The inventors of the present invention have made intensive studies to solve the above problems. is attached, and then placed in an atmosphere filled with a bad odor for a predetermined period of time, and then the odor of the test piece is evaluated. It was found that the performance when adhering to the interior material can be determined. The present invention has been completed through further studies based on such findings.

That is, the present invention provides inventions in the following aspects.
Section 1. A method for evaluating the performance exhibited when the fragrance component of a stationary air freshener adheres to an interior material,
A first step of placing a test piece in an atmosphere in which the fragrance component of a stationary fragrance is volatilized to create a test piece with the fragrance component attached,
An evaluation method comprising a second step of placing the test piece to which the perfume component adhered prepared in the first step is placed in an atmosphere filled with a bad odor, and a third step of evaluating the odor of the test piece after the second step. .
Section 2. Item 1. The evaluation method according to Item 1, wherein the test piece is a sheet obtained by cutting wallpaper.
Item 3. Item 3. The evaluation method according to Item 1 or 2, wherein the first step is performed while ventilating the space.
Section 4. The first step is performed in a box-shaped space surrounded by floor, side and ceiling surfaces,
Item 4. The evaluation method according to any one of items 1 to 3, wherein in the first step, the test piece is placed on at least one of the floor surface, the side surface, and the ceiling surface.
Item 5. Item 5. The evaluation method according to Item 4, wherein in the first step, test pieces are placed on at least one of the side surfaces, at least one of the bottom surfaces, and at least one of the ceiling surfaces.
Item 6. The first step is performed in a box-shaped space surrounded by floor, side and ceiling surfaces and having a ventilation device on the ceiling surface,
Air in the box-shaped space is discharged from the ceiling surface by the ventilation device,
Item 3. The evaluation method according to item 1 or 2, wherein in the first step, the test piece is placed only on at least one place on the side surface and at least one place on the bottom surface.
Item 7. Item 7. The evaluation method according to any one of Items 1 to 6, wherein in the third step, the test piece after the second step is subjected to a sensory evaluation of odor.
Item 8. Item 8. The evaluation method according to Item 7, wherein in the sensory evaluation, deodorant performance and fragrance performance are determined by evaluating malodor intensity and odor comfort.

According to the evaluation method of the present invention, it is possible to determine the deodorant performance and fragrance performance exhibited when the fragrance component volatilized from the stationary air freshener adheres to the interior material such as wallpaper, so the evaluation method of the present invention can be used. , it becomes possible to easily select an air freshener that has both excellent deodorant performance and fragrance performance.

2 is a schematic diagram of a box-shaped space used in Test Example 2. FIG.

The evaluation method of the present invention is a method of evaluating the performance exhibited when the fragrance component of a stationary fragrance adheres to an interior material, and a test piece is placed in an atmosphere in which the fragrance component of the stationary fragrance is volatilized. A first step of placing the test piece with the perfume component attached thereto; a second step of placing the test piece with the perfume component attached thereto prepared in the first step in the atmosphere filled with the malodor; and the second step. It is characterized by including a third step of evaluating the odor of the subsequent test piece. The evaluation method of the present invention will be described in detail below.

[Evaluation target]
The evaluation method of the present invention is a method of evaluating the performance exhibited when the perfume component of the stationary aromatic agent volatilizes and adheres to the interior material.

In the present invention, the term "stationary air freshener" refers to air fresheners that are left stationary in spaces such as toilets, rooms, automobiles, shoe cupboards, and closets to volatilize. The stationary-type aromatic agent to be evaluated in the present invention may be an aromatic deodorant agent containing a deodorant component in addition to a perfume component. Further, the shape of the stationary aromatic agent to be evaluated in the present invention is not particularly limited, and may be in any shape such as liquid or gel. In addition, in the evaluation method of the present invention, the stationary air freshener to be evaluated may be a known one or a development candidate that has not been known in the past.

In the evaluation method of the present invention, it is possible to evaluate the fragrance performance (performance to impart fragrance) and / or deodorant performance (malodor masking performance) when the stationary fragrance volatilizes and the fragrance component adheres to the interior material. can. In the present invention, the interior material is an interior material used in a space in which the stationary aromatic is installed, and examples thereof include wallpaper, floor material, curtain material, sofa material and the like.

[Test pieces]
In the present invention, the test piece is an object to which the volatilized stationary fragrance component adheres. In the evaluation method of the present invention, a test piece is simulated as an interior material, and the performance is evaluated when the perfume component volatilized from the stationary aromatic agent adheres to the test piece.

The test piece may be anything that imitates the interior material, for example, a sheet obtained by cutting the interior material; a sheet made of the same material as the interior material, such as a textile product, a resin sheet, a leather sheet, a wooden sheet, etc. etc. When the test piece is a sheet obtained by cutting wallpaper or a sheet made of the same material as the wallpaper, the evaluation method of the present invention evaluates the performance when the volatilized fragrance component adheres to the wallpaper. becomes possible.

^The size of the test piece may be within ^a range where the odor ^{can be} evaluated in the third step described later ^. 36 cm ² or less.

[First step]
In the first step, a test piece is placed in a space in which the fragrance component of the stationary aromatic agent has volatilized to prepare a test piece to which the fragrance component volatilized from the stationary aromatic agent adheres.

In the first step, the space to be used may be any space capable of forming a space in which the test piece can be placed, and examples thereof include a sealed bag, a container with a lid, and a box-shaped space. A box-shaped space is a space surrounded by floor, side and ceiling surfaces. The volume of the space for volatilizing the fragrance component of the stationary fragrance is not particularly limited, but is, for example, 5 L or more, preferably 5 L or more and 5000 L or less. Specifically, in the case of simply forming a space for installing a test piece using a sealed bag, a container with a lid, etc., the volume of the space is preferably about 6 L or more and 10 L or less. be done. In the case of a box-shaped space, the volume of the space is about 5 L or more and 5000 L or less.

In addition, if a box-shaped space is used as the space for volatilizing the fragrance component of the stationary air freshener, and the volume and shape of the box-shaped space are set to the same extent as the space in which the stationary air freshener to be evaluated is installed, It is possible to evaluate the performance of stationary air fresheners under conditions close to actual use. For example, when evaluating a stationary air freshener used in a household toilet, the volume is about 1000 L or more and 5000 L or less, preferably about 2000 L or more and 4000 L or less, more preferably about 2500 L or more and 3000 L or less; A box-shaped space of about 1.0 m ² to 3.0 m ² , preferably about 1.0 m ² to 2.0 m ² , more preferably about 1.0 m ² to 1.5 m ² may be used. .

Further, the space in which the fragrance component of the stationary aromatic agent is volatilized may be a space where the stationary aromatic agent is actually installed, such as a toilet, living room, closet, shoe cupboard, or the interior of a car.

The place where the test piece is installed in the space is not particularly limited, but may be appropriately set according to the type of space to be used. For example, in the case of a box-shaped space, the performance of the stationary air freshener can be evaluated for each place where the test piece is installed. It may be set according to the location in the target space.

In the case of a box-shaped space, the place where the test piece is installed may be at least one of the bottom, side, and ceiling surfaces, but preferably at least one side surface, and at least one side surface, and the bottom and ceiling At least one location on the face is more preferred, and at least one location on the side surface, at least one location on the bottom surface, and at least one location on the ceiling surface are even more preferred. For example, in the case of a relatively narrow living space such as a toilet, odors adhering to the walls are easily detected. It becomes possible to more appropriately evaluate the performance perceived in actual use.

In order to install the test piece in the space, the test piece can be fixed in place using adhesive, adhesive tape, or the like. Moreover, when installing a test piece on the bottom surface, it is sufficient to simply place the test piece.

In order to place the test piece in the space where the perfume component of the stationary air freshener has volatilized, the stationary air freshener should be placed in the space where the test piece is installed so that the fragrance component can volatilize. . In addition, if the stationary air freshener cannot be installed in the space, prepare air in which the fragrance component from the stationary air freshener is volatilized in advance, and introduce the air into the space where the test piece is installed. good.

In the first step, the time for placing the test piece in the space where the fragrance component of the stationary fragrance has volatilized may be any time that allows the volatilized fragrance component to adhere to the test piece, depending on the volume of the space to be used, etc. For example, about 10 hours or more and 100 hours or less, preferably about 12 hours or more and 80 hours or less, more preferably about 12 hours or more and 72 hours or less.

Also, the first step may be performed while ventilating the space. Normally, living spaces such as toilets and rooms are ventilated. It becomes possible to evaluate the performance of a stationary air freshener under conditions closer to the environment of use. In the case of a box-shaped space, it is preferable that the ceiling surface is provided with a ventilation device, and the air in the box-shaped space is discharged from the ceiling surface by the ventilation device. When performing the first step while ventilating the space, the number of ventilation times per hour is, for example, 5 to 20 times, preferably 7.5 to 15 times, more preferably 8 to 12 times. These include: Here, the number of ventilation times per hour is the number of times the air in the space is completely replaced with the outside air per hour.

The thus-prepared test piece to which the perfume component adheres is subjected to the following second step.

[Second step]
In the second step, the test piece with the fragrant component prepared in the first step is placed in the space filled with the bad odor.

As the space for performing the second step, the space used for performing the first step may be used as it is. It is desirable to

The space used in the second step may be any space as long as it can form a space in which the test piece can be placed, and examples thereof include those capable of sealing the internal space, such as a sealed bag and a container with a lid. The volume of the space used in the second step is not particularly limited, but is, for example, about 5 L or more, preferably about 5 L or more and 15 L or less, more preferably about 7.5 L or more and 12 L or less.

To install the test piece in the space, the test piece may be placed in the space, or the test piece may be fixed in the space using an adhesive, an adhesive tape, or the like.

In order to place the test piece in the space filled with the malodor, the malodor component should be introduced into the space where the test piece is placed. The type of malodorous component to be introduced is preferably a malodorous component that can exist in the space to be evaluated for the performance of the stationary air freshener. methyl, acetaldehyde, butyric acid, isovaleric acid, acetic acid and the like. The amount of the malodorous component introduced into the space is, for example, such that the concentration of the malodorous component in the space is about 0.001 ppm to 100 ppm, preferably about 0.1 ppm to 100 ppm, more preferably about 1 ppm to 10 ppm. should be set to Before introducing the malodorous component into the space where the test piece is installed, it is desirable to replace the air in the space with odorless air.

In the second step, the time for which the test piece is placed in the space filled with the malodorous substance may be appropriately set in consideration of the type and amount of the malodorous component to be introduced. It is preferably about 1 hour or more and 6 hours or less, and more preferably about 1 hour or more and 3 hours or less.

The test piece thus contacted with the malodor is subjected to the third step below.

[Third step]
In the third step, the test piece after the second step is taken out and its odor is evaluated.

Odor evaluation may be carried out by measuring the degree of bad odor of the test piece using a measuring device such as an odor sensor. A sensory evaluation is desirable.

For the sensory evaluation, for example, at least one of the malodor intensity and the comfort of the fragrance may be used as an evaluation item. The evaluation of the strength of the bad smell can be made by evaluating the degree of bad smell felt from the test piece, and the deodorant performance of the stationary air freshener to be evaluated can be determined based on the evaluation result. In addition, the evaluation of odor comfort can be performed by evaluating the overall odor comfort felt from the test piece, and based on the evaluation results, the fragrance performance of the stationary air freshener to be evaluated can be determined. . Moreover, the sensory evaluation is preferably performed by a plurality of people trained in the odor test, and the evaluation results are preferably scored for each evaluation item. For example, malodor intensity can be scored according to the odor intensity scale, and odor comfort can be scored according to the pleasant-unpleasant scale.

Moreover, the evaluation of the odor in the third step is preferably carried out by preparing a test piece subjected to only the second step as a control and comparing it with the control.

Based on the evaluation result of the odor in the third step, it is possible to determine the performance when the fragrance component volatilized from the stationary fragrance adheres to the interior material. For example, the higher the degree of suppression of the bad odor of the test piece, the more excellent the deodorant performance of the stationary air freshener to be evaluated. The agent is judged to have excellent fragrance performance.

EXAMPLES The present invention will be described below with reference to Examples, but the present invention is not limited to these Examples.

Test example 1
Four kinds of liquid stationary air fresheners A to D with different components were prepared, and the performance of the air fresheners adhering to the wallpaper was evaluated by the following method. The stationary fragrance A and the stationary fragrance C have the same type of fragrance. The stationary aromatic agent A contains more perfume components than the stationary aromatic agent C in order to enhance the deodorizing performance. The stationary aromatic agent B and the stationary aromatic agent D have the same type of fragrance. The stationary aromatic agent B contains a larger amount of perfume component than the stationary aromatic agent D to enhance deodorant performance.

A wallpaper (seal type wallpaper <br/remoist type> option: pattern: SW-34 Frisch, manufactured by Asahipen Co., Ltd.) was cut into a square of 5 cm x 5 cm, and this was used as a test piece. A test piece was attached to the inside of a 6-liter bag with a curing tape so that the wallpaper surface faced up. Each stationary aromatic was placed in a 10 L air bag with a cock (manufactured by GL Sciences) in a volatilizable state, sealed, and degassed. Next, 5 L of odorless air passed through activated carbon was filled in a 10 L air bag with a cock, and allowed to stand still for 1 hour to prepare air from which the perfume component of the stationary aromatic was volatilized. Next, the entire amount of the air in which the fragrance component of the stationary fragrance has been volatilized is introduced into the bag with the test piece stuck inside, and the bag is sealed and left to stand for 1 hour, so that the fragrance component adheres. made a piece.

Next, the test piece to which the perfume component had adhered was taken out from the bag, and the test piece was attached to the inside of a new 10-liter airbag with a cock with a curing tape so that the wallpaper surface faced up. After that, the 10L airbag with the cock was sealed and degassed, then 5L of odorless air passed through activated carbon was filled, triethylamine was introduced into the interior to make the triethylamine concentration in the airbag 1000ppm, and the airbag was sealed. and left for 1 hour. In addition, as a control, a test piece to which no fragrance component was adhered was also allowed to stand in the triethylamine space under the same conditions.

After that, the test piece was taken out from the air bag, and sensory evaluation was made of the odor intensity and the pleasantness/unpleasantness of the odor according to the 6-step odor intensity indication method and the pleasant/unpleasantness indication method from -2.0 to +2.0. The sensory evaluation was performed by eight trained persons, and the average score was calculated for each evaluation item. The evaluation criteria for the 6-level odor intensity indication method and the comfort/discomfort indication method are shown below.
<Six-level odor intensity display method (evaluation criteria for odor intensity)>
0: Odorless 1: Barely perceivable odor (detection threshold)
2: A weak odor that makes it possible to identify what it is (cognitive threshold)
3: Easily detectable odor 4: Strong odor 5: Strong odor
+2: Pleasant +1: Slightly pleasant 0: Neither pleasant nor unpleasant -1: Slightly unpleasant -2: Unpleasant

Table 1 shows the results. Comparing the results of stationary air freshener A and stationary air freshener C, which have the same type of fragrance, the score improvement value of stationary air freshener A was superior. Comparing the results of stationary air freshener B and stationary air freshener D, which have the same type of scent, the score improvement value of stationary air freshener B was superior. As a result, it was confirmed that the evaluation method of the present invention can be used to evaluate the deodorant performance when the perfume component of the stationary air freshener adheres to the wallpaper.

＃スコアの改善値は、コントロールのスコアと各据置型芳香剤のスコアとの差である。

# The score improvement value is the difference between the score of the control and the score of each stationary fragrance.

Test example 2
The liquid stationary-type air fresheners A to D used in Test Example 1 were prepared, and the performance of the air freshener adhering to the wallpaper was evaluated by the following method.

A wallpaper (seal type wallpaper <br/remoist type> option: pattern: SW-34 Frisch, manufactured by Asahipen Co., Ltd.) was cut into a square of 5 cm x 5 cm, and this was used as a test piece.

A box-shaped space (bottom: 90 cm x 130 cm square, height: 220 cm) having a bottom, side and ceiling was prepared. A schematic diagram of the box-shaped space is shown in FIG. Although not shown in FIG. 1, the box-shaped space has a door on the front side and a ventilation device on the ceiling. The door is a single swing door. The door support (hinge) is on the right side when viewed from the outside of the box-shaped space. Outside air flows into the box-shaped space through the door gap and is discharged from the ceiling surface by the ventilation device. The test piece was pasted with a curing tape so that the wallpaper surface faced up to a total of 5 locations, 1 location on the bottom surface, 3 locations on the side surface, and 1 location on the ceiling surface in the box-shaped space. The details of the locations where the test pieces were attached are as shown in Table 2.

The ventilation conditions in the box-shaped space were adjusted so that the wind speed was 0.36 m / s (9 times / hour of ventilation), and the temperature in the box-shaped space was kept at 22.5 ° C and the humidity was 40% RH. By placing each stationary aromatic agent on a shelf in the space overnight in a volatilizable state, a test piece to which the fragrance component of the stationary aromatic agent adhered was prepared. In addition, the door of the box-shaped space was closed when the stationary type air freshener was placed overnight.

Next, the test piece to which the perfume component was adhered was taken out from the box-shaped space, and the test piece was attached to the inside of a 10-liter airbag with a cock with a curing tape so that the wallpaper surface faced the front side. After that, the 10L airbag with the cock was sealed and degassed, then 5L of odorless air passed through activated carbon was filled, triethylamine was introduced into the interior to make the triethylamine concentration in the airbag 1000ppm, and the airbag was sealed. and left for 1 hour. In addition, as a control, a test piece to which no fragrance component was adhered was also allowed to stand in the triethylamine space under the same conditions. A control is a test piece to which triethylamine is adhered without undergoing the step of adhering the fragrance component of the stationary fragrance in a box-shaped space.

After that, the test piece was taken out from the air bag, and sensory evaluation was made of the odor intensity and the pleasantness/unpleasantness of the odor according to the 6-step odor intensity indication method and the pleasant/unpleasantness indication method from -2.0 to +2.0. The sensory evaluation was performed by eight trained persons, and the average score was calculated for each evaluation item. The evaluation criteria for the 6-level odor intensity indication method and the pleasantness/discomfortness indication method are the same as in Test Example 1.

Table 3 shows the results. Comparing the results of stationary air freshener A and stationary air freshener C, which have the same type of fragrance, the score improvement value of stationary air freshener A was superior. Comparing the results of stationary air freshener B and stationary air freshener D, which have the same type of scent, the score improvement value of stationary air freshener B was superior. From these results, it was confirmed that the evaluation method of the present invention can be used to evaluate the deodorant performance when the perfume component of the stationary air freshener adheres to the wallpaper. In particular, from this result, by using a box-shaped space with the same shape as a household toilet and attaching the fragrance component of the stationary air freshener to the wallpaper, the deodorant performance of the fragrance component attached to each location of the box-shaped space And it was confirmed that the fragrance performance can be evaluated. As shown in Table 2, by arranging the test pieces on a plurality of surfaces in the box-shaped space, it was confirmed that the fragrance component of the stationary aromatic agent adhered evenly to each surface of the ventilated space. Therefore, it is desirable to install test pieces on at least one side surface, at least one bottom surface, and at least one ceiling surface. Furthermore, from the results shown in Table 3, the improvement values of the bottom and side scores tend to be lower than the improvement values of the top surface. As long as test pieces are installed at least on the bottom and side surfaces, it is possible to evaluate the deodorant performance of the perfume component of the stationary fragrance. Therefore, if test pieces are placed only on at least one side surface and at least one bottom surface, the evaluation test can be performed in a shorter time without lowering the evaluation accuracy.

＃スコアの改善値は、コントロールのスコアと各据置型芳香剤のスコアとの差である。

# The score improvement value is the difference between the score of the control and the score of each stationary fragrance.

Claims (8)

A method for evaluating the performance exhibited when the fragrance component of a stationary air freshener adheres to an interior material,
A first step of placing a test piece in an atmosphere in which the fragrance component of a stationary fragrance is volatilized to create a test piece with the fragrance component attached,
An evaluation method comprising a second step of placing the test piece to which the perfume component adhered prepared in the first step is placed in an atmosphere filled with a bad odor, and a third step of evaluating the odor of the test piece after the second step. . The evaluation method according to claim 1, wherein the test piece is a sheet obtained by cutting wallpaper. 3. The evaluation method according to claim 1, wherein the first step is performed while ventilating the space. The first step is performed in a box-shaped space surrounded by floor, side and ceiling surfaces,
The evaluation method according to any one of claims 1 to 3, wherein in said first step, a test piece is placed on at least one of said floor surface, said side surface and said ceiling surface. 5. The evaluation method according to claim 4, wherein in said first step, test pieces are placed on at least one of said side surfaces, at least one of said bottom surfaces, and at least one of said ceiling surfaces. The first step is performed in a box-shaped space surrounded by floor, side and ceiling surfaces and having a ventilation device on the ceiling surface,
Air in the box-shaped space is discharged from the ceiling surface by the ventilation device,
3. The evaluation method according to claim 1 or 2, wherein in said first step, a test piece is placed only on at least one location on said side surface and at least one location on said bottom surface. The evaluation method according to any one of claims 1 to 6, wherein in said third step, the test piece after said second step is subjected to an odor sensory evaluation. The evaluation method according to claim 7, wherein in the sensory evaluation, deodorant performance and fragrance performance are determined by evaluating malodor intensity and odor comfort.

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