JP2010144315A - METHOD FOR LIGHT STABILIZING gamma-ORYZANOL AND ATTACHING IT TO FIBER AND FIBER PRODUCT WITH SUCH METHOD PROCESSED - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attach γ-oryzanol to a fiber and to maintain the physiological effect. <P>SOLUTION: It is ascertained that the above issue is solved by this invention which is based on dissolving γ-oryzanol into an oil solution together with vitamin E group to obtain an emulsion and attaching it onto a fiber. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, vitamin E is used in combination with γ-oryzanol, dissolved in an oil agent, and processed into a fiber, whereby decomposition by light can be suppressed, and can be used in the field of clothing such as underwear and shirts.

  γ-Oryzanol is a physiologically active ingredient that dissolves in oil contained in rice germ, and is known to have effects of promoting blood circulation and preventing skin function deterioration due to aging However, there is a problem that if it is used as it is, it is decomposed by light and the physiologically active effect is not sustained.

In Japanese Patent No. 2968297, there is an attempt to fix γ-oryzanol to fibers to prevent rough skin. However, even if washing durability can be obtained, there is a drawback that it is decomposed by light when exposed to sunlight.

In JP-A-2007-258165, γ-oryzanol is used in combination with a water-soluble antioxidant to stabilize it in an aqueous solution. However, when it is processed into a fiber, the water-soluble antioxidant is lost by washing with water. It is difficult to obtain a physiologically active effect.

  An object of the present invention is to adhere γ-oryzanol to fibers and maintain a physiologically active effect.

  The present invention is based on dissolving γ-oryzanol in an oil together with vitamin E, emulsifying it, and adhering it to the fiber, and it has been found that this problem can be solved.

  INDUSTRIAL APPLICABILITY The present invention has an effect that excellent light stability can be imparted by dissolving γ-oryzanol and α-tocopherol acetate in an oil and adhering them to the fiber.

BEST MODE FOR CARRYING OUT THE INVENTION

  The fibers used in the present invention are natural fibers such as cotton, wool, and silk, regenerated fibers such as rayon, polynosic, and acetate, and synthetic fibers such as polyester, nylon, and acrylic, and these are mixed in one kind or two or more kinds. It may be a thing.

  The surfactant for emulsifying γ-oryzanol in water is preferably a nonionic surfactant or an anionic surfactant, but is not particularly limited.

  As a method for producing the functional fiber of the present invention, first, γ-oryzanol and α-tocopherol acetate are dissolved in an oil agent, then a surfactant is blended, heated to 80 ° C. and dissolved, and then at 80 ° C. Water may be added to prepare an emulsion, and the fibers may be immersed and dried.

  Further, the concentration of the oil agent is not particularly limited, but the same amount or more as that of γ-oryzanol and α-tocopherol acetate is preferable.

  In order to improve the washing durability, various combined binders such as polyester resin, urethane resin, vinyl chloride resin, vinyl acetate resin, silicon resin, acrylic resin and the like may be used.

  The γ-oryzanol adhering to the functional fiber obtained in the present invention is dramatically more photostable than when α-tocopherol acetate is not used, and an exposure test is conducted for 2 months after the fiber processing. Is also observed.

  The invention is specifically reported by the following examples. In addition, as a measuring method of the physiological activity effect of γ-oryzanol, each processed sample was extracted three times with acetone, then concentrated with an evaporator, and confirmed by purple fading by the DPPH radical elimination method.

  (Example 1) γ-oryzanol (15 parts) and α-tocopherol acetate (15 parts) are dissolved in liquid paraffin (170 parts), nonionic surfactant (100 parts) (NIKKOL (Nikko Chemicals)), glycerin (50 parts) was mixed, heated and dissolved at 80 ° C., and water (650 parts) at 80 ° C. was added to obtain an emulsion (1000 parts).

  (Example 2) An emulsion was obtained in the same manner as in Example 1 except that the amount of α-tocopherol acetate in Example 1 was changed to 1.5 parts.

  Example 3 An emulsion was obtained in the same manner as in Example 1 except that α-tocopherol acetate in Example 1 was changed to α-tocopherol.

  (Comparative Example 1) An emulsion was obtained in the same manner as in Example 1 except that α-tocophenol acetate was omitted from Example 1.

  Comparative Example 2 An emulsion was obtained in the same manner as in Example 1 except that γ-oryzanol was omitted from Example 1.

  (Comparative Example 3) An emulsion was obtained in the same manner as in Example 1, except that γ-oryzanol and α-tocophenol acetate were omitted from Example 1.

Each blending ratio is shown in Table 1.

  The cotton knit was immersed in a 10% aqueous solution of the emulsion shown in Table 1 and compared with a drawing ratio of 90%, and then heat treated at 110 ° C. for 10 minutes to obtain each sample.

  Each sample was exposed outdoors to measure DPPH radical scavenging ability.

The test results are shown in Table 2.

    From Table 2, it is clear that the sample obtained by emulsifying γ-oryzanol with α-tocopherol acetate showed an antioxidant effect and improved long-term light stability.

  In the present invention, since γ-oryzanol can be light-stabilized and adhered to the fiber, it is possible to provide a fiber product imparted with a sustained physiological activity effect.

Claims (5)

  The fiber processing method which suppresses decomposition | disassembly by the light of (gamma)-oryzanol by using vitamin E together with (gamma)-oryzanol.   A method in which the ratio of γ-oryzanol and vitamin E is 10: 1 to 1:10, and after dissolving in an oil, it is emulsified and processed into fibers.   A fiber processing method that uses a hydrocarbon, ester oil, or vegetable oil, which is liquid at room temperature and dissolves the agent shown in claim 1, as the oil agent of claim 2.   The fiber processing method which uses at least 1 sort (s) of chemical | medical agent chosen from the acetic acid alpha-tocopherol, alpha-tocopherol, and alpha-tocotrienol as vitamin E of Claim 1.   Fibers and textile products treated according to claims 1-4.