JP2009035853A - Method for refining treatment of fiber derived from plant root, and fiber obtained by the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refining treatment method capable of efficiently obtaining good quality fibers on a small scale from plant root residue containing starch, which residue has no utility value and is made waste. <P>SOLUTION: Fibers can be obtained by soaking the residue of plant roots containing starch into a solution, being agitated to remove starch, and thereby efficiently performing refining treatment by enzyme treatment or weak alkali treatment, wherein these steps requires no dedicated refining treatment equipment and can be performed by using an existing dyeing machine. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to obtaining fibers from a fibrous material obtained from plant root residues by purification treatment techniques such as enzyme treatment, alkali treatment, oxidation treatment and the like.

  The residue after extracting starch (kuzume) from the root of kuzu by the manufacturer of kuzu powder has been conventionally disposed of as industrial waste. This residue contains a large amount of kudzu root fibrous material. In recent years, fiber-related SMEs in Nara Prefecture have tried to commercialize fiber products from yarns obtained by blending and spinning the fibers obtained from these residues with cotton fibers and silk fibers. The method for obtaining fibers from this residue was a method of washing with water using a dyeing machine or a washing machine, or washing with water manually.

  The kudzu root fibrous material is mainly composed of cellulose, hemicellulose, and lignin, but the surrounding fiber is covered with hydrophobic raw starch. This method requires a long time for the treatment, is inefficient, and it is difficult to obtain fine and uniform fibers. Therefore, a new refining method for obtaining good quality fibers has been desired.

  On the other hand, there is a method (Patent Document 1) in which plant root residues are treated in a strong alkaline aqueous solution at a high temperature, but a dedicated facility that can withstand the high temperature strong alkaline aqueous solution is required and the energy cost required for the treatment is high. There is also a problem of treatment of strong alkaline waste liquid.

There are many literatures on enzyme scouring methods for cotton and hemp fibers.
An enzyme scouring method in which an aqueous solution containing a cellulose-degrading enzyme and a pectin-degrading enzyme is used is known (Patent Document 2, Non-Patent Document 2). Regarding cotton fibers, a treatment method using a liquid containing pectinase is known (see Patent Document 3 and Non-Patent Document 1).
Compared with the treatment using a strong alkaline aqueous solution as described above, the method using an enzyme is lower in energy cost and easier to treat the waste liquid. However, the fiber from the plant root fibrous material covered with raw starch is treated by enzyme treatment. There is no literature on how to get it.
JP 2000-290890 A Japanese Patent Laid-Open No. 51-149976 Japanese Patent Laid-Open No. 06-220772 Chatani et al., Aichi Prefectural Institute of Industrial Technology Research Report, 2005, Volume 4, P196-199 Kawahara et al., Textile Society Proceedings, 2006, Vol. 61, No. 1, P113

  In terms of the development of natural fibers derived from plant roots, the uniqueness of local resources, the characteristics of fibers derived from various materials, and the features that match natural orientation, despite the need in recent years. It wasn't much studied.

  On the other hand, it is very meaningful to effectively use industrial waste consisting of plant roots discharged from various industrial fields including food industry, pharmaceutical industry and agriculture as resources.

  Unlike stems and leaves, plant roots often store starch in the inner skin layer of the epidermis. For example, in the case of kuzu root, even if it is a residue consisting of fibrous material after starch extraction, the fiber is covered with hydrophobic raw starch (Fig. 1), and it is efficient unless this raw starch is removed. Therefore, it is not possible to obtain a good quality fiber.

  The present invention does not require a dedicated refining treatment facility, and can easily obtain high-quality fibers from a fibrous material covered with raw starch contained in plant root residues, even in a small-scale establishment. It aims at providing the refinement | purification processing method which can be performed, and the fiber obtained by this method.

In order to achieve the above-mentioned object, the present inventor, in particular, focused on the residue after extracting starch (kuzume) from the root of kuzu by the manufacturer of kuzu powder, and as a result of earnest research, a solution containing amylase It is possible to obtain fibers from which raw starch has been removed by immersing and stirring in the inside, and subsequently or simultaneously, it is possible to efficiently carry out purification treatments such as enzyme treatment, weak alkali treatment, and oxidation treatment. As a result, it was possible to obtain a high-quality fiber that can be spun by mixing with a natural fiber material or a chemical fiber material having a long fiber length and a small fineness. Furthermore, it was confirmed that these steps do not require a dedicated refining treatment facility and can be carried out using an existing dyeing machine, thereby completing the present invention. Specifically, the present invention includes the following embodiments;
Item 1. A method for purifying a fiber derived from a plant root, characterized in that the fiber obtained from a plant root residue is immersed in a solution containing amylase and stirred to obtain the fiber from the fibrous material. .
Item 2. A fiber derived from a plant root, which is obtained by immersing and stirring a fibrous substance obtained from a plant root residue in a solution to which amylase is added.
Item 3. The fibrous material obtained from the plant root residue is immersed in a solution to which pectinase has been added after the purification treatment method described in Item 1 and stirred to obtain fibers from the fibrous material. A method for purifying fibers derived from plant roots.
Item 4. A fiber derived from the roots of a plant, obtained by immersing the fiber obtained in Item 2 in a solution containing pectinase and stirring.
Item 5. A method for purifying fibers derived from plant roots, wherein fibers are obtained by immersing and stirring a fibrous material obtained from a plant root residue in a solution containing amylase and pectinase.
Item 6. A fiber derived from a plant root obtained by immersing and stirring a fibrous material obtained from a residue of a plant root in a solution containing amylase and pectinase.
Item 7. The fiber material obtained from the plant root residue is immersed in a solution to which cellulase or / and hemicellulase is added after the purification treatment method described in Item 3 or 5 and stirred to obtain fibers. A method for purifying fibers derived from plant roots, which is characterized.
Item 8. A fiber derived from a plant root, obtained by immersing and stirring the fiber obtained in Item 4 or 6 in a solution containing cellulase or / and hemicellulase.
Item 9. The fiber-derived material obtained from the plant root residue is immersed in an alkaline solution after the purification treatment method described in Item 3 or 5 and stirred to obtain the fiber, and is derived from a plant root Fiber purification treatment method.
Item 10. A fiber derived from a plant root, which is obtained by immersing the fiber obtained in Item 4 or 6 in an alkaline solution and stirring the fiber.
Item 11. Item 10. The method for purifying fibers derived from plant roots according to any one of Items 3, 5, 7, and 9, wherein the pectinase according to Item 3 and 5 is a protopectinase derived from Bacillus.
Item 12. Item 10. The fiber derived from a plant root according to any one of Items 4, 6, 8, and 10, wherein the pectinase according to Item 4 and 6 is a protopectinase derived from Bacillus.
Item 13. The fibrous material obtained from the plant root residue is immersed in a solution containing an aqueous sodium hypochlorite solution after the purification treatment method described in Item 3 and stirred to obtain fibers. A method for purifying fibers derived from plant roots.
Item 14. A fiber derived from a plant root, obtained by immersing and stirring the fiber obtained in Item 4 in a solution containing an aqueous sodium hypochlorite solution.
Item 15. Item 14. The plant according to any one of Items 1, 3, 5, 7, 9, 11, and 13, wherein the plant root residue is a residue after starch is extracted from kuzu root. A method for purifying fibers derived from roots of rice.
Item 16. Item 15. The plant root origin according to any one of Items 2, 4, 6, 8, 10, 12, and 14, wherein the plant root residue is a residue after starch is extracted from kuzu root. Fiber.

  According to the purification treatment method of the present invention, a fibrous substance contained in a plant root residue can be easily used even in a small-scale establishment by diverting an existing dyeing machine without requiring a dedicated purification treatment facility. Can produce high-quality fibers, and at the same time reduce industrial waste.

  The plant root residue targeted by the present invention broadly means industrial waste consisting of plant roots discharged from various industrial fields including the food industry, pharmaceutical industry and agriculture. Specific examples include root waste after crops are collected, root waste discharged during cooking processes such as vegetable scraps, and the like.

  Furthermore, the plant root residue targeted by the present invention is a root waste discharged as a by-product when processing roots and extracting active ingredients, for example, residues after collecting starch from various straws, The residue after collecting starch from the roots of kuzu can be mentioned.

As a pretreatment to enter the process of refining the fiber from the fibrous material, depending on the state of the residue of the root of the plant, if the residue of the root of the plant is in a state where there is a lump that retains the root prototype, After crushing this lump, it is necessary to wash away substances other than fibrous substances such as mud and skin mixed in the residue to some extent with a washing machine or a dyeing machine.
Further, if the plant root residue is in a dry state, it is necessary to immerse it in water to sufficiently contain moisture.

  The amylase used in the above items 1, 2, 5, and 6 is used for the purpose of decomposing and removing starch remaining in the root residue of the plant, and any amylase can be used as long as it can achieve such purpose. Can be used. For example, the thing derived from a plant, the thing which microorganisms produce can be used. Examples of such amylases include Christase T10S (registered trademark), Christase L1 (registered trademark), Christase P8 (registered trademark), Kokugen SD-A (registered trademark), Kokugen L (manufactured by Daiwa Kasei Co., Ltd.). Registered trademark), Kokugen SD-T (registered trademark), Kokugen SD-TC3 (registered trademark), Amano Enzyme Co., Ltd. Amylase AD “Amano” 1 (registered trademark), Biozyme A (registered trademark), Biozyme F10SD (registered trademark) Trademark), Nagase ChemteX Corporation Spitase PN4 (registered trademark), Yakult Pharmaceutical Industries Ltd. Uniase BM-8 (registered trademark), etc. It is not limited to.

  In the above items 1, 2, 5, and 6, when the amount of amylase in the aqueous solution is small, starch may not be completely removed. Therefore, the amylase content in the aqueous solution is preferably 1 g / L or more.

  The solutions used in the above items 1, 2, 5, and 6 are generally prepared by adding amylase to water and mixing uniformly.

  When the above items 1, 2, 5, and 6 are implemented using a residue consisting of a fibrous substance after starch is extracted from the roots of kuzu as a material, the plant root residue is usually treated as follows. First, as a pretreatment of the above items 1, 2, 5, and 6, this residue is put in a net and immersed in water for 10 hours or more with a dyeing machine. Then, after washing with water, the above items 1, 2, 5 and 6 are immersed in an aqueous solution containing amylase for 1 hour and stirred.

  The pectinase used in the above items 3, 4, 5, and 6 is used for the purpose of loosening the fiber by decomposing the pectin bundled with the fiber, and it is desirable to use a protopectinase derived from Bacillus bacteria. Examples thereof include squallase IGA (registered trademark) of IGA Bioresearch Corporation, and XP-534 (protopectinase Nagase) (registered trademark) of Nagase ChemteX Corporation.

  In the above items 3, 4, 5, and 6, when the amount of pectinase in the aqueous solution is small, there is a possibility that pectin cannot be completely removed. Therefore, the pectinase content in the aqueous solution is preferably 1 g / L or more.

  The above items 7 and 8 are efficiently performed after the above items 3, 4, 5, and 6.

  The cellulase or hemicellulase used in the above items 7 and 8 is used for the purpose of appropriately decomposing cellulose or hemicellulose, and any one can be used as long as such an object can be achieved. For example, the thing derived from a plant, the thing which microorganisms produce can be used. Examples of such cellulases include cellulase A “Amano” 3 (registered trademark) from Amano Enzyme Co., Ltd., cellulase T Amano 4 (registered trademark), cellulase Y-NC (registered trademark) from Yakult Pharmaceutical Co., Ltd., Cellulase “Onozuka” 3S (registered trademark), Cellulosin T2 (registered trademark), Cellulosin AL (registered trademark), Cellulosin AC40 (registered trademark), etc. of HBI Co., Ltd., and hemicellulase “Amano” 90 (Registered Trademark) may be mentioned, but it is not particularly limited as long as it is a cellulase that decomposes cellulose or a hemicellulase that decomposes hemicellulose.

  In the above items 7 and 8, since the strength of the fiber is lowered when the decomposition of cellulose or hemicellulose proceeds too much, the content of cellulase or hemicellulase in the aqueous solution is preferably 1 g / L or less.

  The alkaline solution used in the above items 9 and 10 generally means a solution in which a metal hydroxide typified by sodium hydroxide and potassium hydroxide is added, and the fibers are made finer by decomposing and removing hemicellulose. Use for the purpose.

  When processing using an existing dyeing machine, it is necessary to perform processing at a concentration that does not corrode the dyeing machine. Therefore, when sodium hydroxide is used as an alkaline solution in the solution, the content is 10 g / L or less. It is desirable to be.

  The protopectinase derived from Bacillus used in the above items 11 and 12 is a pectinase having a pH range of 7 to 8 that is most actively active. When amylase and pectinase are used simultaneously as enzymes, or when pectinase is used in the same bath after treatment with amylase, since the optimum pH of amylase is near neutral, any pectinase having this characteristic should be used. be able to. Examples of the pectinase having this characteristic include, but are not particularly limited to, squallase IGA (registered trademark) of IGA Bioresearch Corporation and XP-534 (protopectinase Nagase) (registered trademark) of Nagase ChemteX Corporation. .

  The sodium hypochlorite aqueous solution used in the above items 13 and 14 is used for the purpose of oxidizing and removing lignin in the fibrous material, and other substances may be used as long as the purpose can be achieved. it can.

  As chlorine-based lignin-removing chemicals, chlorine, hypochlorous acid, hypochlorite and the like are generally known. The form of these compounds changes depending on the pH. A mixture of chlorine and hypochlorous acid is present at a pH of 3.5 or less, hypochlorous acid is present at around pH 3.5-4.5, and the pH is from 4.5 to 8. When the mixture of chlorous acid and hypochlorite is pH 8 or higher, hypochlorite is mainly present. In this, hypochlorous acid oxidizes with not only lignin but also cellulose, so the sodium hypochlorite aqueous solution in the above items 13 and 14 should be in the region of pH 8 or higher where the oxidation reactivity to cellulose fibers is relatively low. Is suitable.

The fiber obtained in the present invention is mixed with a natural fiber material or a chemical fiber material, spun, and manufactured as a yarn.
The yarn is used for wallpaper fabrics, clothing fabrics, interior fabrics, knits, socks and the like.
Since the fiber obtained in the present invention can obtain a fiber having a long fiber length and a small fineness, the mixing ratio in the yarn can be increased.

  The present invention will be described below based on examples, but it goes without saying that the present invention is not limited to these examples.

Purification of residue after collecting starch from kuzu root The residue was purified after collecting starch from kuzu root using a washing fastness tester. 5 g of dried residue after collecting starch from kuzu root and 300 ml of water (pH 6.5) are placed in a test container for fastness to washing, and amylase Spitase PN4 (Nagase ChemteX Corporation, (registered trademark)) 1.0 g / L was added. The temperature was kept at 50 ° C. and immersion and stirring were performed for 60 minutes. Thereafter, the sample was lightly washed with running water, and after natural drying, observed with an electron microscope. The starch adhering to the fiber surface was removed cleanly, and the treatment result was good.

Purification of residue after collecting starch from kuzu root In Example 1, Christase T10S (Daiwa Kasei Co., Ltd.) (registered trademark) instead of Spitase PN4 (Nagase ChemteX Corp., (registered trademark)) )) Was used in the same manner except that it was used. As a result, the starch adhering to the surface of the fiber was removed cleanly in the same manner as in Example 1, and the treatment result was good.
[Comparative Example 1]

Purification of residue after collecting starch from kuzu root In the same manner as in Example 1, except that XP-534 (Nagase ChemteX Corporation, (registered trademark)), which is a pectinase, is used instead of amylase. did. The starch remained attached to the fiber surface, resulting in the inhibition of fiber pectin removal.
[Comparative Example 2]

Purification of residue after collecting starch from kuzu root In Comparative Example 1, Pectinase SS (Yakult Pharmaceutical Co., Ltd.), (Registered) instead of XP-534 (Nagase ChemteX Corporation, (registered trademark)) Trademark))) and the same treatment except that the solution was adjusted to pH 4. As a result, the starch remained on the surface of the fiber as in Example 3, and the removal of pectin from the fiber was inhibited.

Purification of residue after collecting starch from kuzu root In Example 2, in addition to amylase Christase T10S (Daiwa Kasei Co., Ltd. (registered trademark)), pectinase XP-534 (Nagase Chemtex ( Strain) and (Registered Trademark)) were used in the same manner except that they were used at the same time. As a result, the starch adhering to the surface of the fiber was removed as in Example 1, and the calcium component forming a complex with pectin was largely deposited on the surface to indicate that pectin was removed. .

Purification of residue after collecting starch from kuzu root The sample after the treatment of Example 2 and 300 ml of water (pH 6.5) were placed in a test container for fastness to washing, and XP-534 (pectinase) Nagase ChemteX Corporation (registered trademark)) 1.0 g / L was added. The temperature was kept at 50 ° C., and immersion and stirring were performed for 60 minutes using a washing fastness tester. Thereafter, the sample was lightly washed with running water, and after natural drying, observed with an electron microscope. The starch adhering to the surface of the fiber was removed cleanly, and the calcium component was deposited much better on the surface than in Example 3, resulting in the removal of pectin.

  The fiber surface purification treatment state in Examples 1 to 4 and Comparative Examples 1 and 2 was observed using an electron microscope. Example 1 is shown in FIG. 2, Example 2 is shown in FIG. 3, Example 3 is shown in FIG. 4, Example 4 is shown in FIG. 5, Comparative Example 1 is shown in FIG. 6, and Comparative Example 2 is shown in FIG. . In FIGS. 2 and 3 where the treatment with amylase is performed, the spherical starch is completely removed and the fiber surface of the root is exposed, whereas in FIGS. 6 and 7 of the comparative example, the starch covers a part of the surface. Therefore, the effect of pectinase is inhibited. On the other hand, in FIG. 4 of Example 3 and FIG. 5 of Example 4, since the treatment with amylase is performed before or simultaneously with the pectinase treatment, the effect of pectinase appears and a large amount of calcium component is exposed on the surface. That is, pectin is removed. Therefore, it has been found that an effective purification method is to perform the treatment with amylase first or simultaneously with the treatment with pectinase.

Purification of residue after collecting starch from kuzu root 4 g of dried residue after collecting starch from kuzu root was placed in 160 mL of water, and Christase T10S (Daiwa Kasei Co., Ltd., registered trademark) Was used for 1 hour soaking and stirring treatment (concentration 0.1%, pH near neutral, temperature 60 ° C.) to remove starch. After washing with water, treatment with an aqueous solution (around pH 8) of squallase IGA (Bioresearch Corp., registered trademark) 1 mL / L (0.1%) was performed at a temperature of 55 ° C. for 1 hour with stirring. The fiber could be thinned to 11.6 tex.
[Comparative Example 3]

Purification of residue after collecting starch from kuzu root In Example 5, pectinase G (Amano Enzyme Co., Ltd., (registered trademark)) was used instead of squalase IGA, and the pH was adjusted to 4 in the same manner. Processed. The fiber thickness could be reduced to 12.1 tex.
[Comparative Example 4]

Purification of residue after collecting starch from kuzu root In Example 5, pectinase SS (Yakult Pharmaceutical Co., Ltd., (registered trademark)) was used instead of squallase IGA, and the pH was adjusted to 4. Processed. The fiber thickness could be reduced to 12.1 tex.

The fineness measurement results in Example 5 and Comparative Examples 3 to 4 are shown in Table 1. The fiber with thinner squalase IGA is thinner than the treatment with pectinase G and pectinase SS. Therefore, it was found that using protopectinase derived from Bacillus bacteria as an effective purification method for pectinase.

Purification of residue after collecting starch from kuzu root 4 g of dried residue after collecting starch from kuzu root was placed in 160 mL of water, and Christase T10S (Daiwa Kasei Co., Ltd., registered trademark) Was used for 1 hour soaking and stirring (concentration 0.1%, pH was neutral, temperature 60 ° C.) to remove starch. After washing with water, the solution was treated with an aqueous solution (around pH 8) of squallase IGA (Bioresearch Corp., registered trademark) 1 mL / L (0.1%) with stirring at a temperature of 55 ° C. for 2 hours.
The sample obtained by the above treatment was washed with water, and further immersed in an aqueous solution at 55 ° C. containing 1.0 g / L of Cellulase Y-NC (Yakult Pharmaceutical Co., Ltd., (registered trademark)) in 160 mL of water for 1 hour. The mixture was stirred, lightly washed with running water, and then naturally dried.
FIG. 8 is an electron micrograph of the fiber surface after cellulase treatment. You can see that the fibers are more loose.

Purification of residue after collecting starch from kudzu root 80g of dried residue after collecting starch from kuzu root was placed in water overnight, then lightly washed into 4L of water, XP-534 (Nagase ChemteX Co., Ltd., (registered trademark)) 1.0 g / L and Christase T10S (Daiwa Kasei Co., Ltd., (registered trademark)) 1 mL / L (0.1%) were added, and the temperature was 55 ° C. And then stirred for 1 hour.
After the treatment, 20 g of the sample obtained by washing and drying was immersed in 90 ° C. aqueous solution in which 10 g of sodium hydroxide was added to 1 L of water, stirred for 60 minutes, then washed with running water and dried naturally. .
FIG. 9 is an electron micrograph of the fiber surface before the treatment with the aqueous sodium hydroxide solution and FIG. 10 is the fiber surface after the treatment with the aqueous sodium hydroxide solution. It can be seen that the fiber after the treatment with the aqueous sodium hydroxide solution begins to separate in the longitudinal direction and is loosened before the treatment.

Purification of residue after collecting starch from kuzu root 4 g of the sample after the treatment of Example 4 was put in 160 ml of water, and sodium hypochlorite (effective chlorine concentration: 5%) was 0.2. % And stirred at 45 ° C. for 1 hour. Thereafter, it was washed with running water for 15 minutes, dehydrated and naturally dried.
FIG. 11 is an electron micrograph of the fiber surface after the above treatment. It can be seen that the fibers are starting to separate in the longitudinal direction and are loosened.

Natural fibers made from plant roots are unique as regional resources, featured by fibers made from various materials, and have features that match natural orientation.
According to the present invention, it is possible to easily obtain a high-quality fiber having such features by suppressing the energy cost easily even in a small-scale office without requiring much capital investment, thereby promoting and developing local industries. At the same time, industrial waste can be reduced.

Electron micrograph of residue (before treatment) after collecting starch from kuzu root Electron micrograph of kuzu-root fiber treated for 60 minutes with a solution at 50 ° C. added with spitase PN4 (Nagase ChemteX Corporation, (registered trademark)) Electron micrograph of Kuzunori treated for 60 minutes with a 50 ° C. solution to which Christase T10S (Daiwa Kasei Co., Ltd., (registered trademark)) was added. Kuzu root fiber treated for 60 minutes with a 50 ° C solution to which Christase T10S (Daiwa Kasei Co., Ltd., (registered trademark)) and XP-534 (Nagase ChemteX Corp., (registered trademark)) were added simultaneously Electron micrograph of After treating for 60 minutes with a 50 ° C. solution to which Christase T10S (Daiwa Kasei Co., Ltd., (registered trademark)) was added, 50 ° C. to which XP-534 (Nagase ChemteX Corp., (registered trademark)) was added. Micrograph of kuzu-root fiber treated for 60 minutes with a solution of Electron micrograph of kuzu-root fiber treated with a solution at 50 ° C. to which XP-534 (Nagase ChemteX Corp., (registered trademark)) was added for 60 minutes. Electron micrograph of kuzu-root fiber treated for 60 minutes with a 50 ° C. solution containing pectinase SS (Yakult Pharmaceutical Co., Ltd., (registered trademark)) After adding Christase T10S (Daiwa Kasei Co., Ltd., (registered trademark)), soaking and stirring for 1 hour at a temperature of 55 ° C., 2 hours with an aqueous solution containing Squalase IGA (Bioresearch Corp., registered trademark) Electron micrograph of kuzu-root fibers immersed in and stirred for 60 minutes in a 55 ° C. aqueous solution containing cellulase Y-NC (Yakult Pharmaceutical Co., Ltd., (registered trademark)) after soaking and stirring. XP-534 (Nagase ChemteX Co., Ltd., (registered trademark)) and Christase T10S (Daiwa Kasei Co., Ltd., (registered trademark)) were added, and the mixture was stirred and stirred for 1 hour at a temperature of 55 ° C. Electron micrograph XP-534 (Nagase ChemteX Co., Ltd., (registered trademark)) and Christase T10S (Daiwa Kasei Co., Ltd. (registered trademark)) were added and treated at a temperature of 55 ° C. for 1 hour. Electron micrograph of Kuzu no Root that was soaked and stirred for 60 minutes in an aqueous sodium hydroxide solution After treating for 60 minutes with a solution at 60 ° C. to which Christase T10S (Daiwa Kasei Co., Ltd., (registered trademark)) was added, treated with XP-534 (Nagase ChemteX Corp., (registered trademark)) for 1 hour. Electron micrograph of Kuzu no Root after oxidation with sodium hypochlorite solution

Claims (16)

  A method for purifying a fiber derived from a plant root, characterized in that the fiber obtained from a plant root residue is immersed in a solution containing amylase and stirred to obtain the fiber from the fibrous material. .   A fiber derived from a plant root, which is obtained by immersing and stirring a fibrous substance obtained from a plant root residue in a solution to which amylase is added.   A fibrous material obtained from a plant root residue is immersed in a solution to which pectinase is added after the purification treatment method according to claim 1 and stirred to obtain fibers from the fibrous material. A method for purifying fibers derived from plant roots.   A fiber derived from a plant root, which is obtained from a fibrous material by immersing and stirring the fiber obtained according to claim 2 in a solution to which pectinase is added.   A method for purifying fibers derived from plant roots, wherein fibers are obtained by immersing and stirring a fibrous material obtained from a plant root residue in a solution containing amylase and pectinase.   A fiber derived from a plant root obtained by immersing and stirring a fibrous material obtained from a residue of a plant root in a solution containing amylase and pectinase.   A fiber obtained from a plant root residue is immersed in a solution containing cellulase or / and hemicellulase after the purification treatment method according to claim 3 or 5 is carried out to obtain a fiber. A method for purifying fibers derived from plant roots, characterized in that   A fiber derived from a plant root, which is obtained by immersing and stirring the fiber obtained according to claim 4 or 6 in a solution containing cellulase or / and hemicellulase.   A plant root characterized in that a fiber is obtained by immersing a fibrous substance obtained from a plant root residue in an alkaline solution after the purification treatment method according to claim 3 or 5 and stirring the mixture. A method for purifying a fiber derived from the origin.   A fiber derived from a plant root obtained by immersing and stirring the fiber obtained according to claim 4 or 6 in an alkaline solution.   The method for purifying fibers derived from plant roots according to any one of claims 3, 5, 7, and 9, wherein the pectinase according to claims 3 and 5 is a protopectinase derived from Bacillus. .   The fiber derived from a plant root according to any one of claims 4, 6, 8, and 10, wherein the pectinase according to claims 4 and 6 is a protopectinase derived from Bacillus.   A fibrous material obtained from a plant root residue is immersed in a solution containing sodium hypochlorite after the purification treatment method according to claim 3 and stirred to obtain fibers. A method for purifying fibers derived from plant roots.   A fiber derived from a plant root, which is obtained by immersing and stirring the fiber obtained according to claim 4 in a solution containing sodium hypochlorite.   The root residue of the plant is a residue after extracting starch from the root of kuzu, described in any one of claims 1, 3, 5, 7, 9, 11, and 13, A method for purifying fibers derived from plant roots. The plant root residue according to any one of claims 2, 4, 6, 8, 10, 12, and 14, wherein the plant root residue is a residue after starch is extracted from kuzu root. Origin fiber.