WO2009081463A1

WO2009081463A1 - Multifunctional natural material and method for producing multifunctional natural material

Info

Publication number: WO2009081463A1
Application number: PCT/JP2007/074561
Authority: WO
Inventors: Shigeru Takaki; Reiko Kinoshita; Kuniyoshi Shimizu; Ryuichiro Kondo
Original assignee: Akaru Corporation; Kurume Research Park Co., Ltd.; Kyushu University, National University Corporation
Priority date: 2007-12-20
Filing date: 2007-12-20
Publication date: 2009-07-02
Also published as: JP4328843B2; JPWO2009081463A1

Abstract

A multifunctional natural material has vetiver roots from which volatile components can be removed and fragrance components have been removed. As a pretreatment, vetiver roots are washed with water and dried in the sun for one to two days, followed by drying in the shade for about one week in a well-ventilated place. Then, fragrance components are removed from the vetiver roots over a long period of time of 12 to 30 hours by steam distillation at a steam pressure of 4 to 5 bar. The vetiver roots from which fragrance components have been removed are dried with hot air at 27 to 60°C thereby to remove water therefrom. Then, dried vetiver roots are cut into pieces with a length of, for example, 1 to 30 cm, and the cut vetiver roots are put in a breathable container, nonwoven cloth or the like thereby to become a deodorant or a pest repellent according to the intended use.

Description

Multifunctional natural material and method for producing multifunctional natural material

The present invention relates to a multifunction natural material and a method for producing a multifunction natural material. Specifically, the present invention relates to a multifunction natural material using a highly safe natural material and a method for producing the multifunction natural material.

Since modern people sometimes keep pets in their homes, fleas, ticks and other pests are generated even in winter, causing various allergies. In addition, indoors in which there is nobody in the daytime are often not ventilated or ventilated during the day, so mold is generated and the mold odor becomes a problem, and the garbage odor and pet odor are also problems. There is a need to deodorize and remove such odors.
In hospitals and elderly care facilities, there is also a problem of unpleasant urine odor (ammonia odor) associated with urinary incontinence.

In addition, modern houses use plywood that uses formaldehyde, building materials that use preservatives, insect-proof paper and tatami mats that contain insecticides, and volatile pollutants such as formaldehyde contained in these materials. The influence causes sick house syndrome and chemical sensitivity, which is a social problem.
In addition, in the Japanese Ministry of Health, Labor and Welfare, an indoor concentration guideline value of a volatile organic compound (VOC) present in indoor air is set. In relation to this, the Ministry of Education, Culture, Sports, Science and Technology in Japan revised the “Standards for School Environmental Hygiene”, and the Ministry of Land, Infrastructure, Transport and Tourism in Japan introduced the “Building Standards Act” and the “Housing Quality Assurance Promotion Act”. In the Ministry of Industry, “Methods for measuring formaldehyde and volatile organic compounds in indoor air” are JIS (Japanese Industrial Standards). Furthermore, Japan's efforts regarding indoor air pollutants are also becoming active.

Under such circumstances, it has been demanded to solve problems of pests such as bad odors, mites and cockroaches, and to solve problems of sick house syndrome and chemical hypersensitivity, and to improve the comfortable environment. Therefore, various methods have been conventionally proposed.
For example, Patent Document 1 describes a pest repellent for pets using an organic acid such as citric acid, malic acid, tartaric acid, succinic acid, or an alkali metal salt thereof.
Patent Document 2 describes a method of purifying indoor air by spraying an aqueous solution of peroxide into a room to remove substances that cause sick house syndrome or chemical substance hypersensitivity.
Further, Patent Document 3 describes a deodorant containing a jasmonic acid compound and delta lactone as a deodorizing component.

JP 2001-31505 A JP 2001-170147 A JP 2002-253651 A

However, these patent documents only propose that they have effects and effects on individual environments, and in the case of a complex environment, many types of drugs must be used, and many types of drugs are used. I was worried about side effects.
Therefore, a method using a highly safe natural material without using various drugs is preferable.

The present invention was devised in view of the above points, and is a multifunctional natural material that can remove pollutants in the air using a highly safe natural material, and the production of such a multifunctional natural material. It aims to provide a method.

In order to achieve the above-mentioned object, the present inventors have conducted intensive research, and as a result, odorous components removed from the roots of plant vetiver, which is a highly safe natural material, cause sick house syndrome and chemical hypersensitivity. As a result, it was discovered that various form of odor components such as ammonia were removed, and the present invention was completed.
In particular, conventional deodorants have been considered as the main mechanisms such as masking effect due to the fragrance of the essential oil itself and deodorizing effect due to the combination of the essential oil component and the odor component. It was found that the roots of vetiver from which the scent was removed had an excellent deodorizing effect.

The present invention is based on the above findings, and the multifunctional natural material of the present invention is a vetiver capable of removing volatile components from which scent components are removed in a multifunctional natural material using a highly safe natural material. It has a root of

Here, since the scent component is removed, there is no worry of giving unpleasant feeling to those who dislike the scent emitted by the scent component.

Also, in the multifunctional natural material of the present invention, the roots of vetiver have a pest repellent function, a deodorizing function, or a formaldehyde removal function, so that they can be used for various purposes.

Further, the present invention is based on the above knowledge, and the method for producing a multifunctional natural material according to the present invention is a method for producing a multifunctional natural material using a highly safe natural material. It has the scent removal process which removes.

In addition, in the method for producing a multifunctional natural material of the present invention, when a vetiver root is dried after the scent removal step, vetiver root mold and decay can be prevented.

Also, in the method for producing a multifunctional natural material of the present invention, when the drying step is performed at 105 ° C. or lower, ignition due to oil contained in the roots of vetiver can be suppressed.

Moreover, in the manufacturing method of the multifunctional natural material of this invention, when it has the cutting process which cut | disconnects the root of a vetiver to a predetermined magnitude | size after a fragrance removal process, it is easy to process and the root of a vetiver with a large surface area is obtained. .

Moreover, in the method for producing a multifunctional natural material of the present invention, when a vetiver root is dried with warm air after the cutting step, the cutting residue of the vetiver root can be removed with warm air. it can.

Further, in the method for producing a multifunctional natural material of the present invention, after the drying step, it has a cutting step for cutting the vetiver root into a predetermined size, and after the cutting step, further drying the vetiver root Since the dried vetiver roots are cut, the water is sufficiently removed to facilitate cutting, and the vetiver roots are dried again after cutting. It can be sealed to prevent mold in the bag.

Also, in the method for producing a multifunctional natural material of the present invention, the scent removing step is simple and quick when the scent component is removed by the steam distillation method.

The multifunctional natural material according to the present invention can remove pollutants in the air using a highly safe natural material.

The method for producing a multifunctional natural material according to the present invention can produce a multifunctional natural material that can remove pollutants in the air using a highly safe natural material.

It is a graph which shows the deodorizing rate with respect to ammonia of the vetiver dry root after steam distillation. It is a graph which shows the deodorizing rate with respect to formaldehyde of the vetiver dry root after steam distillation. It is a graph which shows the deodorization rate with respect to isovaleric acid of the vetiver dry root after steam distillation. It is a graph which shows the deodorizing rate with respect to the butyric acid of the vetiver dry root after steam distillation. It is a graph which shows the deodorizing rate with respect to the trimethylamine of the vetiver dry root after steam distillation.

The multifunctional natural material to which the present invention is applied has vetiver roots from which volatile components can be removed, from which scent components have been removed. Vetiver (scientific name “Veteveria zizaniodes”) is a perennial plant of the grass family native to India.

Any method can be used as long as the scent component can be removed. For example, as a pretreatment, the roots of vetiver are washed with water for 1-2 days and then sun-dried for about 1 week in a well-ventilated place. To do. The scent component is extracted (removed) from the roots of the vetiver by steam distillation at a steam pressure of 4 to 5 atmospheres over a long period of 12 to 30 hours.
The roots of the vetiver from which the scent component has been removed are then dried with warm air of 27 to 105 ° C., preferably 27 to 60 ° C., to remove moisture. Moreover, if it can dry, it does not necessarily need to dry with warm air, for example, natural drying may be sufficient.
Then, the dried vetiver root is cut into a length of 1 to 30 cm, for example, and the cut vetiver root is put in a container or non-woven fabric having good air permeability, and a deodorant is used depending on the application. And pest repellent.
In addition, drying may be performed after cutting. For example, by cutting with hot air after cutting, cutting residue can be removed, and moisture is removed before bagging and sealing to prevent generation of mold in the bag. it can.
Moreover, you may perform a sterilization process simultaneously with drying, and the multifunctional natural material of this invention also has an antibacterial function by performing a sterilization process. For example, the roots of vetiver from which the scent component has been removed are cut, placed in a drying and sterilization room for 15 to 17 hours, and then packed in a sealed bag.

In addition, if the multifunctional natural material to which the present invention is applied has a vetiver root from which the scent component has been removed and from which the volatile component can be removed, it does not necessarily have to be dried after the scent component has been removed. The roots of the vetiver from which the scent component has been removed do not necessarily have to be cut into a length of 1 to 30 cm. For example, the roots of the vetiver can be used after being crushed or crushed into granules or powders. It is not limited.
Moreover, it is not always necessary to dry after removing the scent component, but drying after removing the scent component is preferable because mold and rot can be prevented.
In addition, the roots of vetiver from which the scent component has been removed do not necessarily have to be cut into a length of 1 to 30 cm. Is also preferable.

The roots of the vetiver from which the scent component has been removed are, for example, fusible bags, mats, cushions and other breathable bags, for example, toilet seat covers, toilet slippers such as toilet slippers, for example, air conditioners, Air filters for air conditioners such as air purifiers, humidifiers, etc., such as diapers, incontinence pads, napkins and other care products such as building materials such as wallpaper and building materials, pet-related products, etc. Can be used by weaving. Moreover, the usage-amount of the root of vetiver from which the fragrance component was removed can be suitably selected according to a use purpose, a use form, etc.

Next, in order to confirm the deodorizing effect on various substances, the following deodorizing test was conducted.

[Ammonia deodorization test]
First, a vetiver root dried without removing the scent component (hereinafter referred to as “vetiver dry root”), and a vetiver root (hereinafter referred to as “vetiver dry root”) that has been removed by steam distillation and dried. The vetiver dry roots after steam distillation ”) were pulverized with a pulverizer (mill), and activated carbon was pulverized with a mortar and pestle to obtain various samples.
Next, the stopper at the mouth of the Tedlar bag was removed and replaced with a silicon tube having a thickness suitable for the detection tube, and the corner of the Tedlar bag was bent as a sample injection place and stopped with tape. A cut was made so that the volume did not change at the corner where it was not bent, and a sample weighed precisely to about 5 g was put through the cut and then sealed with tape.
Then, the air inside the Tedlar bag was evacuated with a pump, 4 liters of compressed air was introduced using an integrating flow meter, and the silicone tube was closed with a clip and sealed. A microsyringe (10 microliter volume) was pierced into the portion that was bent and secured with tape, that is, the portion where the sample was not adhered, and 10 microliter of 25% aqueous ammonia was injected.
Then, the portion where the hole was opened by the microsyringe was immediately closed with tape, and the entire Tedlar bag was heated with a dryer to vaporize the ammonia water. Then, after 2 minutes, 10 minutes, 20 minutes, 40 minutes, 80 minutes, and 160 minutes, the ammonia concentration (ppm) is measured using a detector and a detector tube at intervals. The deodorization rate was calculated by the following formula. The results are shown in Table 1 and FIG.
Deodorization rate (%) = {blank concentration− (sample concentration / blank concentration)} × 100

As can be seen from Table 1 and FIG. 1, the vetiver dry root powder after steam distillation was deodorized as much as 75% after 2 minutes from the start of deodorization of ammonia, and ammonia was the fastest among the three samples. Deodorized.

[Formaldehyde deodorization test]
First, dried vetiver roots and steam-distilled vetiver dried roots were pulverized with a pulverizer, and activated carbon was pulverized with a mortar and pestle to obtain various samples.
Next, the stopper at the mouth of the Tedlar bag was removed and replaced with a silicon tube having a thickness suitable for the detection tube, and the corner of the Tedlar bag was bent as a sample injection place and stopped with tape. A cut was made so that the volume did not change at the corner where it was not bent, and a sample weighed precisely to about 5 g was put through the cut and then sealed with tape.
Then, the air inside the Tedlar bag was evacuated with a pump, 4 liters of compressed air was introduced using an integrating flow meter, and the silicone tube was closed with a clip and sealed. A microsyringe (10 microliter volume) was pierced into the portion that was bent and secured with tape, that is, the portion where the sample was not adhered, and 0.4 microliter of formaldehyde was injected.
Then, the portion where the hole was opened by the microsyringe was immediately closed with tape, and the entire Tedlar bag was heated with a dryer to vaporize the solution. Then, 2 minutes later, 10 minutes later, 20 minutes later, 40 minutes later, 80 minutes later, using a detector and a detector tube, the formaldehyde concentration is measured, and the deodorization rate is calculated. did. The results are shown in Table 2 and FIG.

As can be seen from Table 2 and FIG. 2, the dried vetiver root powder after steam distillation deodorized formaldehyde at a deodorization rate of 70% or more, similar to the activated carbon powder.

[Isovaleric acid deodorization test]
First, dried vetiver roots and steam-distilled vetiver dried roots were pulverized with a pulverizer, and activated carbon was pulverized with a mortar and pestle to obtain various samples.
Next, the stopper at the mouth of the Tedlar bag was removed and replaced with a silicon tube having a thickness suitable for the detection tube, and the corner of the Tedlar bag was bent as a sample injection place and stopped with tape. A cut was made so that the volume did not change at the corner that was not bent, and a sample weighed precisely to about 3 g was put through the cut and then sealed with tape.
Then, the air inside the Tedlar bag was evacuated with a pump, 4 liters of compressed air was introduced using an integrating flow meter, and the silicone tube was closed with a clip and sealed. A microsyringe (10 microliter volume) was pierced into the portion that was bent and secured with tape, that is, the portion where the sample was not adhered, and 2 microliters of isovaleric acid was injected.
Then, the portion where the hole was opened by the microsyringe was immediately closed with tape, and the entire Tedlar bag was heated with a dryer to vaporize the solution. Then, after 2 minutes, 10 minutes, 20 minutes, 40 minutes, 80 minutes, and so on, the detector and detector tube are used to measure the concentration of isovaleric acid, and the deodorization rate Was calculated. The results are shown in Table 3 and FIG.

As can be seen from Table 3 and FIG. 3, after 10 minutes, 20 minutes and 40 minutes after the start of deodorization, the deodorization rate of the vetiver dry root powder after the steam distillation to isovaleric acid is It showed a higher value than the deodorization rate for herbic acid. Further, after 10 minutes from the start of deodorization, a high deodorization rate exceeding 80% was exhibited.

[Butyric acid deodorization test]
First, a vetiver dry root after steam distillation was powdered with a pulverizer to obtain a sample. Moreover, the activated carbon powder sample having a particle size of about 350 mesh was prepared.
Next, the stopper at the mouth of the Tedlar bag was removed and replaced with a silicon tube having a thickness suitable for the detection tube, and the corner of the Tedlar bag was bent as a sample injection place and stopped with tape. A cut was made so that the volume did not change at the corner where it was not bent, and a sample weighed precisely to about 5 g was put through the cut and then sealed with tape.
Then, the air inside the Tedlar bag was evacuated with a pump, 4 liters of compressed air was introduced using an integrating flow meter, and the silicone tube was closed with a clip and sealed. A microsyringe (10 microliter volume) was pierced into the portion that was bent and secured with tape, that is, the portion where the sample was not adhered, and 2 microliters of butyric acid was injected.
Then, the portion where the hole was opened by the microsyringe was immediately closed with tape, and the entire Tedlar bag was heated with a dryer to vaporize the solution. Then, after 10 minutes, 20 minutes, 40 minutes, and 80 minutes, intervals were set, and the concentration of butyric acid was measured using a detector and a detector tube, and the deodorization rate was calculated. The results are shown in Table 4 and FIG.

As can be seen from Table 4 and FIG. 4, the vetiver dry root powder after steam distillation deodorized butyric acid at a deodorization rate of 85% or more, similar to the activated carbon powder.

[Trimethylamine deodorization test]
First, a vetiver dry root after steam distillation was powdered with a pulverizer to obtain a sample. Moreover, the activated carbon powder sample having a particle size of about 350 mesh was prepared.
Next, the stopper at the mouth of the Tedlar bag was removed and replaced with a silicon tube having a thickness suitable for the detection tube, and the corner of the Tedlar bag was bent as a sample injection place and stopped with tape. A cut was made so that the volume did not change at the corner where it was not bent, and a sample weighed precisely to about 5 g was put through the cut and then sealed with tape.
Then, the air inside the Tedlar bag was evacuated with a pump, 4 liters of compressed air was introduced using an integrating flow meter, and the silicone tube was closed with a clip and sealed. A microsyringe (100 microliter volume) was pierced into the portion that was bent and secured with tape, that is, the portion where the sample was not adhered, and 100 microliters of trimethylamine was injected.
Then, the portion where the hole was opened by the microsyringe was immediately closed with tape, and the entire Tedlar bag was heated with a dryer to vaporize the solution. Then, 2 minutes later, 10 minutes later, 20 minutes later, 40 minutes later, 80 minutes later, using a detector and a detector tube, the trimethylamine concentration is measured, and the deodorization rate is calculated. did. The results are shown in Table 5 and FIG.

As can be seen from Table 5 and FIG. 5, after 10 minutes had passed since the start of deodorization, the vetiver dry root powder after steam distillation deodorized trimethylamine at the same deodorization rate as the activated carbon powder.

Moreover, in order to confirm the pest repellent effect of this invention, the following repellent test was done.
[Tick repellent test]
In a first glass petri dish with an outer diameter of about 90 mm and a height of about 20 mm, an amount of mite culture medium containing about 3000 live mites (Yake Leopard mite) is uniformly spread and placed on a sticky insect trap with a diameter of 100 mm or more. placed. Next, a circular second glass petri dish having an outer diameter of about 45 mm and a height of about 15 mm was placed in the center of the first glass petri dish.
Then, in the second glass petri dish, a sample (made up of vetiver roots from which the scent component has been removed) previously cut to approximately the same size as the inner diameter of the second glass petri dish is laid, In the range of a radius of about 5 mm from the center of the glass petri dish, 0.05 g of a reference powder feed for attracting mites was placed.
Then, these glass petri dishes together with the insect traps were placed in a food storage plastic container containing saturated saline and sealed.
Next, after this plastic container for food preservation is left still in an incubator in the total dark state and the container is maintained at 25 ± 1 ° C. and 75 ± 5% RH for 24 ± 1 hours. The ticks were collected from the sample in the second glass petri dish by the water jet method, and the number of ticks was counted. In addition, it tested similarly about the case where it spread | laid in the 2nd glass petri dish by using a normal veneer board instead of the sample comprised from the root of the vetiver from which the fragrance component was removed. The test was repeated three times by returning the sample again in consideration of the variation.
Here, with the water jet method, the sample is spread on a sieve having a diameter of 18 cm and 30 mesh, and a pad (capacity 5 liters) having the same diameter as the sieve is placed under the sieve, and the sample is vigorously applied in the shower. This is a method of spraying water. By this operation, ticks adhering to the sample were washed out, dropped to the lower pad, and when the pad became full, all the water in the pad was suction filtered. This operation was repeated 2-3 times until no ticks were found in the sample.
The test was repeated three times, and the repelling rate was calculated by the following formula.
Repelling rate (%) = {1− (number of ticks in sample / number of ticks in mite medium)} × 100
The results are shown in Table 6. In the table, “Acal B-150” indicates a sample composed of vetiver roots from which the scent component has been removed, and the number of ticks is the sum of three tests.
For comparison, a sample (paper holder cover) composed of vetiver roots from which fragrance components have not been removed is used instead of “Acal B-150” and the number of surviving mites (Yake Leopard mite) is about 2400. The test was carried out in the same manner as described above, except that an amount of mite culture medium containing animals was used. The results are shown in Table 7.

[Cockroach repellent test]
The test was conducted in accordance with the test method of the Japan Environmental Health Center (a method for determining the efficacy from the latent condition of the test insects in the shelter where the specimen was treated). Details will be described below.
A sample cut to 7 x 7 cm in a container made of paper (height 20 cm x width 26 cm x length 15 cm) and resin-processed inside (control group), namely "Acar B-150" (vetiver from which scent components have been removed) ) And a normal plywood board. Similarly, a square member is attached to the four sides of a 7 × 7 cm plywood plate so that they do not contact each other, the square member of the plywood plate to which the square member is attached is applied to the sample surface, and 5 mm between the sample surface and the plywood plate. A shelter in which a gap was formed was produced.
And in the center part of the container, absorbent cotton soaked with water and solid feed were placed so that test insects (adult cockroach adults) could freely ingest. Further, in order to prevent the test insects from escaping, 20 pet insects were placed in the container after thinly applying petrolatum to the inner wall of the container.
Twenty-four hours after the start of the test, the number of cockroaches hiding in each of the Akar B-150 shelter (treated area) and the normal plywood shelter (untreated area) was counted. Judged.
Repelling rate (%) = {1− (number of cockroaches in treated group / number of cockroaches in control group)} × 100
The repellent test was conducted with three containers. However, when the number of cockroaches in the Akar B-150 shelter exceeded the number of cockroaches in the normal plywood shelter, the repellent effect was recognized. As a result, the overall repelling rate was 0%. The results are shown in Table 8.
For comparison, a test was performed in the same manner as described above except that a sample (paper holder cover) composed of vetiver roots from which fragrance components had not been removed was used instead of “Acal B-150”. It was. The results are shown in Table 9.

As can be seen from Tables 6 and 8, the roots of vetiver from which scent components have been removed are less susceptible to mites and cockroaches, and have an excellent pest repellent effect. In particular, regarding the repellent effect of cockroaches, it can be seen that the roots of vetiver from which the scent component has been removed (unscented) are superior to the roots of vetiver from which the scent component has not been removed (fragrance).

As described above, the multifunctional natural material of the present invention has a vetiver root from which a scent component is removed and a volatile component can be removed. Therefore, a highly safe natural material is used, and ammonia, isovaleric acid It can adsorb and remove various odorous substances such as butyric acid and trimethylamine, and has an excellent deodorizing effect.

Also, formaldehyde is one of the causative substances of sick house syndrome, and deodorization of formaldehyde, that is, removal of formaldehyde is useful for preventing sick house syndrome.

In addition, since the scent component is removed, there is no worry of giving unpleasant feeling to a person who dislikes the scent emitted by the scent component, and the multifunctional natural material of the present invention can be expected to be widely accepted by consumers. .

In addition, the multifunctional natural material of the present invention makes it difficult for cockroaches to come close and has a pest repellent effect.

Moreover, since the multifunctional natural material of the present invention uses a natural material, it can return to nature even if it is discarded and can be treated as normal waste.

Claims

In multifunctional natural materials using natural materials with high safety,
A multifunctional natural material characterized in that it has vetiver roots from which volatile components can be removed.
The multifunctional natural material according to claim 1, wherein the root of the vetiver has a pest repellent function.
The multifunctional natural material according to claim 1, wherein the root of the vetiver has a deodorizing function.
The multifunctional natural material according to claim 1, wherein the root of the vetiver has a formaldehyde removal function.
In the manufacturing method of multifunctional natural materials using natural materials with high safety,
A method for producing a multifunctional natural material comprising a scent removing step of removing scent components from roots of vetiver.
The method for producing a multifunctional natural material according to claim 5, further comprising a drying step of drying vetiver roots after the scent removing step.
The method for producing a multifunctional natural material according to claim 6, wherein the drying step is performed at 105 ° C or lower.
The method for producing a multifunctional natural material according to claim 5, further comprising a cutting step of cutting a vetiver root into a predetermined size after the scent removing step.
The method for producing a multifunctional natural material according to claim 8, further comprising a hot air drying step of drying vetiver roots with hot air after the cutting step.
After the drying step, having a cutting step of cutting the roots of the vetiver into a predetermined size,
The method for producing a multifunctional natural material according to claim 6, further comprising a drying step of drying vetiver roots after the cutting step.
The method for producing a multifunctional natural material according to claim 5, wherein the scent removing step removes the scent component by a steam distillation method.