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Iodine- and amylase-containing fibers, process for production thereof, and use thereof

A kind of technology of amylose and manufacturing method, applied in the direction of single-component cellulose artificial filament, application, plant fiber, etc., can solve the problems of easy loss of inclusion function, iodine residue, chemical bond breakage, etc., and achieve excellent bactericidal function, The effect of excellent deodorizing function

Active Publication Date: 2012-11-28
EZAKI GLICO CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method can only impart inclusion function to the fiber surface
Also, there is a problem that when the fiber is exposed to an acid or alkali solution, the chemical bond is broken so that the cyclodextrin on the surface of the fiber is eluted, and the inclusion function is easily lost
However, the blowing method has the following problems: the extraction rate of iodine is 80% to 90%, and in the brine after iodine extraction, iodine remains in a low concentration together with ammonia, bromine, etc.
The ion-exchange resin adsorption method has the following problems: Since a large amount of alkali is required when iodide ions are detached from the resin, the resin is deteriorated
However, there are claims that the existing CD clathrates release iodine molecules through humidification, and there are concerns about human safety due to inhalation of iodine molecules

Method used

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  • Iodine- and amylase-containing fibers, process for production thereof, and use thereof
  • Iodine- and amylase-containing fibers, process for production thereof, and use thereof
  • Iodine- and amylase-containing fibers, process for production thereof, and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0234] Hereinafter, although this invention is demonstrated based on an Example, this invention is not limited to an Example.

[0235] The evaluation test methods used in Examples and Comparative Examples are as follows.

Synthetic example 1

[0236]

[0237] In the reaction liquid (1 liter) containing 20mM phosphate buffer (pH 7.0), 20g / L sucrose and various concentrations of maltooligosaccharide mixture (3880, 232, 77, 44 or 8.8mg / L), add The thermostable glucan phosphorylase derived from potato tubers prepared and refined by the method described in Example 2-1A in the publication No. WO 2004 / 113525 pamphlet (with International Publication No. WO 2004 / 113525 pamphlet The amino acid sequence of SEQ ID NO: 34; 1 unit / mL) and the method described in Example 2A in International Publication No. WO2005 / 24008 pamphlet derived from Streptococcus mutans (Streptococcus mutans) Sucrose phosphorylase (having the amino acid sequence of SEQ ID NO: 22 in International Publication No. WO 2005 / 24008 pamphlet; 1 unit / mL), and allowed to incubate at 37°C for 16 hours. After the reaction, the weight average molecular weight (Mw), degree of polymerization, and degree of dispersion (Mw / Mn) of the produced α-1,4-glucan were determined...

Embodiment 1-1 to 1-4 and comparative example 1-1 to 1-4

[0245]

[0246] The viscose liquid was prepared from raw material slurry (LDPT, manufactured by Nippon Paper Chemicals Co., Ltd.) according to a conventional method. In this viscose, the cellulose content was 9% by weight, the alkali content was 5% by weight, and the falling ball viscosity was 60 seconds.

[0247] The average molecular weight synthesized in synthesis example 1 is 5.2 * 10 3 , 4.62×10 4 or 1.174×10 5 The enzyme-synthesized amylose (without branched chain structure) was respectively dissolved in 5% by weight NaOH aqueous solution to prepare an alkaline aqueous solution of amylose. After mixing any alkaline aqueous solution and viscose solution according to the conventional method, spinning is carried out to obtain artificial fibers containing amylose. A control rayon (Comparative Example 1-1) was obtained by spinning only the viscose solution without mixing with an aqueous alkaline solution. By changing the mixing ratio of the alkaline aqueous solution and...

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Abstract

The inventioni relates to a process for producing amylase-containing rayon fibers, which comprises a step of mixing an aqueous alkaline solution of an amylose with viscose to prepare a mixed solution, and a step of spinning the mixed solution to produce amylase-containing rayon fibers, and a step of bringing the amylase-containing rayon fibers into contact with iodine or a polyiodide ion to allow iodine or the polyiodide ion to be included in the amylase in the amylase-containing rayon fibers, wherein the amylose is an enzymatically synthesized amylase having a weight average molecular weight of 3x104 to 2x105 inclusive. Also disclosed is a method for collecting iodine from branckish water with high efficiency utilizing the amylase-containing rayon fibers.

Description

technical field [0001] The present invention relates to functional artificial fiber containing amylose, its production method and its application. Background technique [0002] Vegetable starch consists of amylose and amylopectin. For example, common corn starch consists of about 20% amylose and about 80% amylopectin. It is widely known that among natural amylose contained in plant starch, glucose is a polysaccharide mainly composed of multiple α-1,4-glucosidic bonds, but only polysaccharides composed of α-1,6-glucosidic bonds branched chain structure. On the other hand, amylopectin is a short amylose chain with a degree of polymerization of about 20, but it is a macromolecule in which multiple clusters are combined through α-1,6-glucosidic bonds. It has been widely known for a long time that the linear α-1,4-glucan chain constituting amylose has a characteristic of forming a helical structure and has a function of incorporating various substances inside the helical struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/10D06M11/09D06M101/06
CPCD01F2/08D06M16/00A01N59/12D06M2101/06A61L9/01D06M11/09A61K8/20A61Q15/00A01N25/10A01N25/34A01N2300/00A61K8/00
Inventor 井上修吉川政敏高久三枝子海宝龙夫田口充三瓶春代寺田喜信鹰羽武史
Owner EZAKI GLICO CO LTD
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