JP2005187430A - Deodorizing agent and antibacterial agent composed of blast-crushed natural plant fiber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorizing agent and an antibacterial agent produced by developing deodorizing property and antibacterial property to a plant by blast crushing effect and using the fiber taken out of the plant as the agent. <P>SOLUTION: A natural plant is crushed by blasting. The blast natural plant fiber obtained by fibrillating the crushed product is used as the deodorizing agent and the antibacterial agent. The natural plant is a wild or cultured plant, free from modification by artificial chemical change with heat or chemicals and containing residual amino acids and proteins. It is effective to use bamboo or sugarcane as the natural plant to be crushed by blasting. The powder or extract of the crushed natural plant fiber is also effective. A woven fabric and a knit fabric produced by using the blast crushed natural plant fiber or an article composed of the fabric are also effective. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a deodorant and an antibacterial agent comprising a crushed natural plant fiber obtained by blasting a natural plant and defibrating it, a spun yarn obtained by blending this crushed natural plant fiber with other fibers, and The present invention relates to a product using the spun yarn.

In a method of taking out and using fibers from plants, for example, cellulose rayon fibers obtained by chemically regenerating bamboo cellulose are used (Patent Document 1).
In addition, a utility model has been filed in which bamboo fiber obtained by softening bamboo with water, steam, or chemical treatment is spun. (Patent Document 2)
Alternatively, a method has been proposed in which bamboo is crushed to extract and use fibers. (Patent Document 3, Patent Document 4, Non-Patent Document 1)
Japanese Patent No. 3448526 Utility Model Registration No. 3080297 JP2003155567 JP2003-253011 Doshisha University Tatsuhiro Tachibana and Takayuki Shito, “Examination of Bamboo Fiber Extraction Methods and Mechanical Properties,” Doshisha University website http://amsel.doshisha.ac.jp/study/16983151.pdf

  In the method of using the cellulose of the plant after chemically regenerating it (for example, Patent Document 1), the regenerated fiber is the same in terms of molecular structure regardless of the plant regenerated. The original characteristics of can not be expressed. For example, cellulose rayon fiber made from bamboo is the same as conventional viscose rayon fiber made from wood. Odor is not expressed. In addition, the antibacterial component that bamboo has produced itself to maintain life disappears during regeneration and is not included in the regenerated cellulose. However, if this antibacterial agent or other antibacterial agents are intentionally added to the regenerated cellulose, antibacterial properties can be developed.

  On the other hand, in the method (for example, patent document 2) which takes out and uses a fiber from a plant by chemical treatment etc., only the characteristic which the plant has originally expresses. For example, bamboo that originally has deodorant and antibacterial properties can express these, but plants that do not originally have these properties cannot.

  Furthermore, there is an attempt to explode bamboo to extract fibers and develop deodorization and antibacterial properties (for example, Patent Document 3). However, explosion itself is simply an effective means of extracting fibers, Antibacterial property is treated as a characteristic inherent to bamboo itself.

  The present invention is to provide a plant with deodorizing and antibacterial properties due to the effect of explosion, and to provide fibers taken out from the plant as a deodorant and antibacterial agent.

  In the present invention, a natural plant fiber obtained by blasting a natural plant and defibrating the natural plant is used as a deodorant and an antibacterial agent. Here, a natural plant is a wild or cultivated plant that has not been modified by artificial chemical changes with heat or chemicals, and remains an amino acid or protein.

  It is effective to use bamboo as a natural plant to explode.

  It is effective to use sugar cane for natural plants to be crushed.

  It is effective to use powder made from crushed natural plant fibers.

  It is effective to use an extract extracted from crushed natural plant fibers.

  It is effective to use a spun yarn obtained by blending explosive natural plant fibers with other fibers.

  It is effective to create a woven fabric or a knitted fabric using the spun yarn described in the item 0012, and use clothing, bedding, interior or industrial material using the woven fabric or the knitted fabric.

Explosive natural plant fiber obtained by pulverizing and softening a natural plant and defibrating it exhibited excellent deodorant and antibacterial properties, and was confirmed to be extremely effective as a deodorant and antibacterial agent.
This is thought to be due to the fact that when the natural plant is blasted, fine irregularities are formed on the surface and inside of the fiber by the pressure at the time of blasting, and the Maillard reaction.

  It was confirmed that when the crushed natural plant fiber is bamboo, it exhibits excellent deodorant and antibacterial properties and is extremely effective as a deodorant and antibacterial agent.

  When the crushed natural plant fiber is sugarcane, it has been demonstrated that it exhibits excellent deodorant and antibacterial properties and is extremely effective as a deodorant and antibacterial agent.

  When the crushed natural plant fiber was made into powder, it exhibited excellent deodorant and antibacterial properties, and was confirmed to be extremely effective as a deodorant and antibacterial agent.

  The extract extracted from the crushed natural plant fiber expressed excellent deodorant and antibacterial properties, and was confirmed to be extremely effective as a deodorant and antibacterial agent.

  It was confirmed that spun yarn obtained by blending crushed natural plant fiber with other fibers exhibits excellent deodorant and antibacterial properties.

  It has been confirmed that a knitted fabric using spun yarn obtained by blending crushed natural plant fibers with other fibers exhibits excellent deodorizing properties and antibacterial properties. In addition, since the performance is maintained even after washing this knitted fabric, clothing, bedding, interiors or industrial materials using these woven fabrics or knitted fabrics should be products that exhibit excellent deodorant and antibacterial properties. It was confirmed.

Embodiments of the present invention will be described based on examples.

Example 1
An example of using bamboo as a natural plant to explode will be described.
Patent Documents 3 and 4 describe the bamboo explosion method in detail. It is also described in Non-Patent Document 1.
In Example 1, the raw bamboo was divided into four parts and crushed seven times at 175 ° C. and 0.80 MPa. After the explosion, the softened bamboo was loosened in advance and finely divided, and the fiber was taken out four times through a defibrating machine. As the defibrating machine, a defibrating machine was used by rotating a cylinder having a diameter of about 1 m with a needle on the surface at several hundred to 1,000 revolutions.
When the deodorant property and antibacterial property of the extracted fiber (explosive bamboo fiber) were measured, excellent results were shown. The deodorization rate of ammonia is 100% after 1 hour, and the number of bacteria on the sample after culturing S. aureus for 18 hours is 1 (3 million on the raw cloth), both of which are almost perfect. Showed performance. Therefore, explosive bamboo fiber is extremely effective as a deodorant and an antibacterial agent.
The deodorant test results are shown in No. 1 of Table 1. 1, antibacterial test results are shown in No. 2 of Table 2. It is shown in 1.

  In addition, the test method of the deodorizing test and the antibacterial test which Table 1 and Table 2 and postscript Table 3-Table 6 show, and how to obtain | require a measurement result are shown next.

First, the deodorization rate in the deodorization test was determined as follows. 0.8 g of the measurement sample was placed in a 600 ml Erlenmeyer flask, then ammonia or isovaleric acid was poured into this Erlenmeyer flask, and a rubber stopper was put on it, followed by sealing with an aluminum seal. Here, in the case of ammonia, 20 ml of 35% ammonia water is put into a 100 ml Erlenmeyer flask and heated to generate ammonia gas. The gas at the top of the flask is collected with a gas tight syringe, and 0.2 ml is added to the flask containing the sample. Injected into. In the case of isovaleric acid, 0.5 μl was injected into the flask containing the sample with a microsyringe, and then heated and evaporated using a hot-air air gun. In both cases, the sample was then allowed to stand at room temperature for 60 minutes, and the concentration of the gas accumulated at the top of the Erlenmeyer flask was measured using a Kitagawa gas detector tube.
An Erlenmeyer flask without a sample was also prepared, and the gas concentration was measured by the same method as described above. The deodorization rate was calculated from these concentrations according to the following formula.

Deodorization rate (%) = {(Gas concentration in flask without sample (ppm) −Gas concentration in flask with sample (ppm)) / Gas concentration in flask without sample (ppm)} * 100

  Next, the bacteriostatic activity value in the antibacterial test was determined as follows. The antibacterial property was measured in accordance with the antibacterial property test of the fiber product specified in JIS L1902. That is, Staphylococcus aureus was inoculated with a culture medium into an antibacterial agent-untreated cotton fabric (unprocessed fabric) and 0.4 g of the sample, and after culturing at 35 ° C. for 18 hours, the number of bacteria on the unprocessed fabric and the sample was measured. The ratio of the number of bacteria on the sample to the number of bacteria on the unprocessed cloth after this culture was expressed as a common logarithmic value and used as a bacteriostatic activity value. Therefore, the bacteriostatic activity value is a logarithmic display, and the higher this, the stronger the antibacterial property. Note that when the ratio of the number of bacteria on the untreated cloth to the number of inoculated bacteria was 1.5 or more, expressed as a common logarithm, the inoculated bacteria were effective and the test was concluded.

  Boiled bamboo fiber exhibits such excellent deodorant and antibacterial properties, not only because the properties inherent to bamboo itself are manifested, but also due to the effect of explosions, the deodorant and antibacterial properties of plants. Is expressed. This is thought to be due to the fact that when the natural plant is blasted, fine irregularities are formed on the surface and inside of the fiber by the pressure at the time of blasting, and the Maillard reaction.

  Although the Maillard reaction has not yet been elucidated in detail, it is considered to be a non-enzymatic browning phenomenon that occurs when the amino group of an amino acid or protein reacts with a reducing sugar by heating, and as a fungus growth inhibitory effect or as an anticancer agent Effectiveness has been confirmed.

Explosive bamboo fiber has turned brown due to explosion, has a caramel odor, is confirmed to have residual nitrogen, and has excellent deodorant and antibacterial properties. Occurrence is supported.
It is thought that fibrous polysaccharides were reduced by the powerful heat energy and water vapor at the time of blasting, and reacted with the amino groups of proteins and amino acids held by plants for life support.

  Note that the nitrogen content of the crushed bamboo fiber was determined by the micro Kjeldahl method. The crude protein amount calculated from this value using the protein conversion factor (6.25) was 1.0 g per 100 g of the sample.

Example 2
Next, if the explosive bamboo fiber explaining the example of using sugarcane in the natural plant to be crushed, if the odor and antibacterial properties of the plant are expressed by the effect of the blasting, the same function can be achieved in other plants. For the confirmation.

Sugarcane used the inner skin part which was separated into three layers of an inner layer to be squeezed in advance, an outer skin part, and a wax part on the surface.
At this time, the sugar cane may be used as it is without being separated into three layers. Moreover, you may use the bagasse which is a squeezed rice cake after squeezing sugarcane. If bagasse is used, it will be used waste that is discarded in large quantities.

The sugarcane explosion method is the same as the bamboo explosion method.
In Example 2, a sugarcane shell blasted at 175 ° C. and 0.80 MPa four times was used. After the explosion, the softened sugarcane shell was mechanically beaten with a chipper shredder and finely divided. This was passed through the defibrator described in item 0022 twice to take out the fiber.
When the deodorant and antibacterial properties of the extracted fiber (explosive sugarcane fiber) were measured, the same excellent results as the explosive bamboo fiber were shown. In addition, in the crushed sugarcane fiber, isovaleric acid was also added in addition to ammonia in the deodorization test.
The deodorant test results are shown in Table 3. 1, the antibacterial test results are shown in Table 4. It is shown in 1.

Explosive sugarcane fiber showed excellent deodorant and antibacterial properties equivalent to explosive bamboo fiber, and also turned brown and similarly produced caramel odor.
This fact shows that if natural plant fibers are blasted, deodorant and antibacterial properties are exhibited by the effect of the above-mentioned blasting.
Therefore, explosive sugarcane fibers, and consequently explosive natural plant fibers, are extremely effective as deodorants and antibacterial agents.

Example 3
Next, an example in which explosive sugarcane fibers are powdered will be described.
Explosive sugarcane fibers were pulverized with a ball mill to obtain a powder having an average value of 20.709 μm and a standard deviation of 0.435 μm.
The deodorant and antibacterial properties of this powder were measured and showed excellent results equivalent to those of explosive sugarcane fibers. The deodorant test results are shown in Table 3. 2, the antibacterial test results are shown in Table 4. It is shown in 2. Therefore, the powder of explosive sugarcane fiber is extremely effective as a deodorant and an antibacterial agent.

Example 4
Next, an example of an extract obtained by boiling crushed sugarcane fibers will be described.
10 g of explosive sugarcane fibers were placed in 200 ml of water, boiled, boiled for 2 minutes, and then naturally cooled. The deodorant and antibacterial properties of this liquid (extract) and the fiber (both post-extraction) taken out from the liquid after boiling and naturally dried were measured. The deodorant test results are shown in Table 3. 3 and no. 4 and the antibacterial test results are shown in No. 4 of Table 4. 3 and no. 4 respectively. The extract sample used was a cloth dipped in the extract and dried (pad dry).
As a result, the antibacterial activity of the extract has a bacteriostatic activity value of 5.00, an excellent antibacterial property is recognized, and it is extremely effective as an antibacterial agent. Moreover, although the deodorizing property of an extract falls compared with the sugarcane fiber which is the other sample of Table 3, and its powder, these other samples are 100% explosive fibers, whereas the extract was extracted in water. This is because the sample is low in purity. In practice, increasing the extraction concentration is effective as a deodorant.
In addition, the fiber after extraction showed the excellent deodorizing property and antibacterial property which is not different from the sugarcane fiber which is not boiled. This is because deodorant and antibacterial properties expressed by sugarcane fibers are not due to substances attached to the fibers by explosion, but the fibers themselves exhibit deodorant and antibacterial properties and can be used repeatedly. It is shown that.

Example 5
Next, an example of spun yarn obtained by blending spun bamboo fiber and explosive sugar cane fiber with cotton will be described.
Since these crushed natural plant fibers are not single fibers but are bundles of single fibers, they are thicker and harder than conventional general-purpose fibers, and spinning with these crushed natural plant fibers alone is difficult. . For this reason, in Example 5, the explosion natural plant fiber was blended with cotton and spun.
In addition to cotton, the fiber to be blended may be hemp, silk, wool, viscose rayon, cupra, purified cellulose, acetate, polyester, nylon, acrylic, or other ready-made fibers. Of course, bamboo cellulose rayon described in 0003 may be used. These prefabricated fibers may be blended with a single fiber, or may be blended with a plurality of these fibers.
First, 30% by weight of explosive bamboo fiber or explosive sugarcane fiber and 70% by weight of cotton were thoroughly mixed in a blender.
The blender used was a type including a step of blending by air blowing in a sealed chamber.

The blended fiber is blended cotton machine, carding machine, kneading machine, roving machine, fine spinning machine, and winding machine, and the 10th British cotton counts are baked bamboo fiber cotton blended yarn (bamboo blended yarn) and crushed sugarcane. Fiber cotton blended yarn (sugar cane blended yarn) was used.
When the deodorizing properties and antibacterial properties of these spun yarns were measured, all showed excellent results equivalent to 100% explosive natural plant fibers, despite the mixing ratio of 30%. The deodorant test results are shown in No. 5 of Table 5. 1 and no. 2, the antibacterial test results are shown in No. 6 of Table 6. 1 and no. It is shown in 2. Therefore, a spun yarn obtained by blending crushed natural plant fibers with other fibers is a spun yarn exhibiting extremely excellent deodorizing properties and antibacterial properties.

Example 6
Next, an example of a knitted fabric that has been knitted and exposed to chlorine by using crushed sugarcane fiber cotton blended yarn will be described.
The tenth cotton sugarcane blend yarn prepared in Example 5 and the tenth cotton yarn of the same cotton count were knitted on a 1-to-2 border using a circular knitting machine, and the knitted fabric was exposed to chlorine (knitted fabric; exposed to chlorine) ). Since the sugar cane blended yarn has a mixing ratio of the crushed sugar cane fibers of 30%, the mixing ratio of the explosive sugar cane fibers of the knitted fabric is 10%.

The odor and antibacterial properties of the knitted fabric and the knitted fabric that had been washed 10 times (knitted fabric; washed 10 times) were measured. The deodorant test results are shown in No. 5 of Table 5. 5 and no. 6 shows the antibacterial test results. 5 and no. It is shown in FIG.
As a result, this knitted fabric exhibited sufficient isovaleric acid deodorizing property and antibacterial property even though the mixing ratio of the crushed sugarcane fiber of the sample was 10%. Furthermore, the knitted fabric which was washed 10 times maintained isovaleric acid deodorization and antibacterial properties as well. In the antibacterial property test of the Fiber Evaluation Technology Council, the bacteriostatic activity value after 10 washings is 2.2 or more as an antibacterial performance pass by the same method as the test method of this example.

Therefore, a knitted or woven fabric using a spun yarn obtained by blending explosive natural plant fibers with other fibers is a fabric exhibiting excellent deodorizing properties and antibacterial properties. Furthermore, since sufficient deodorant and antibacterial properties are maintained after 10 washings, clothing, bedding, interiors or industrial materials using this fabric are products that exhibit excellent deodorant and antibacterial properties. is there.

  As described above, bamboo fiber and sugarcane fiber obtained by blasting, and blended yarns of these 30% and cotton showed excellent deodorizing properties and antibacterial properties. Moreover, the sugarcane fiber obtained by blasting was made into a powder, and the extract extracted therefrom and the fiber after extraction showed excellent deodorizing properties and antibacterial properties. Furthermore, the cloth containing 10% of sugarcane fibers and sufficient deodorant and antibacterial properties were exhibited even after washing 10 times. The same performance of multiple plants and the permanence to maintain the performance even when the material state is changed. It shows that it exhibits antibacterial properties.

Claims (7)

A deodorant and an antibacterial agent comprising crushed natural plant fibers obtained by pulverizing natural plants and defibrating them. A deodorant and an antibacterial agent, wherein the explosion natural plant fiber according to claim 1 is a fiber obtained by explosion of bamboo. A deodorant and an antibacterial agent characterized in that the crushed natural plant fiber according to claim 1 is a fiber obtained by blasting sugarcane. A deodorant and an antibacterial agent, wherein the crushed natural plant fiber according to any one of claims 1 to 3 is powdered. A deodorant and an antibacterial agent characterized by being an extract obtained by boiling the crushed natural plant fiber according to any one of claims 1 to 3. A spun yarn obtained by blending the crushed natural plant fiber according to any one of claims 1 to 3 with other fibers. A woven fabric or knitted fabric using the spun yarn according to claim 6, and clothing, bedding, interior or industrial material using the woven fabric or knitted fabric.