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Method for preparing gluten protein fiber with improved performance

A technology for gluten protein and preparation performance, which is applied in the field of wheat protein resource utilization, can solve the problems of not deep fiber, pollute the environment, easily cause harm to human body, etc., achieve good antibacterial performance, improve breaking strength and elongation at break. Effect

Inactive Publication Date: 2019-06-11
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a large market space for gluten protein fiber, and the research on preparing fiber with gluten powder is not yet deep, and needs to be strengthened urgently. The fiber prepared by patent CN 104523380 A is cross-linked by irritating glutaraldehyde or formaldehyde to obtain gluten. Protein fiber to improve its mechanical properties, which is easy to cause harm to the human body during the production process, and also pollutes the environment

Method used

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  • Method for preparing gluten protein fiber with improved performance
  • Method for preparing gluten protein fiber with improved performance
  • Method for preparing gluten protein fiber with improved performance

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Mix gluten powder and 65% ethanol solution at a solid-liquid ratio of 1:30, shake and extract at 50°C for 3 h, centrifuge, take the supernatant for rotary evaporation, and freeze-dry to obtain gliadin; the extracted wheat The precipitate after gliadin was mixed with water at a material-to-liquid ratio of 1:15, adjusted to pH 11.5, shaken and extracted at 60°C for 3 h, centrifuged, and absolute ethanol was added to the supernatant to prepare a 65% ethanol solution. Adjust the pH to 7, centrifuge overnight at 4°C, wash the precipitate three times with distilled water, and freeze-dry to obtain glutenin; weigh 3 g of gliadin and disperse it in an appropriate amount of distilled water, add 10 mL of tannic acid solution ( 20g / L), adjust the pH of the system to 9.5, react at 40°C for 12h, adjust the pH to 7.0 after the reaction, centrifuge at 4500 r / min for 20min, wash the precipitate with distilled water for 3 times and freeze-dry to obtain the improved Gliadin after denatura...

Embodiment 2

[0025]Mix gluten powder and 65% ethanol solution at a solid-liquid ratio of 1:30, shake and extract at 50°C for 3 h, centrifuge, take the supernatant for rotary evaporation, and freeze-dry to obtain gliadin; the extracted wheat The precipitate after gliadin was mixed with water at a material-to-liquid ratio of 1:15, adjusted to pH 11.5, shaken and extracted at 60°C for 3 h, centrifuged, and absolute ethanol was added to the supernatant to prepare a 65% ethanol solution. Adjust the pH to 7, centrifuge overnight at 4°C, wash the precipitate with distilled water three times, and freeze-dry to obtain glutenin; weigh 5 g of gliadin and disperse it in an appropriate amount of distilled water, add 20 mL of tannic acid solution ( 20g / L), adjust the pH of the system to 10, react at 50°C for 24h, adjust the pH to 7.0 after the reaction, centrifuge at 4500 r / min for 20min, wash the precipitate with distilled water for 3 times and freeze-dry to obtain the improved Gliadin after denaturati...

Embodiment 3

[0027] Mix gluten powder and 65% ethanol solution at a solid-liquid ratio of 1:30, shake and extract at 50°C for 3 h, centrifuge, take the supernatant for rotary evaporation, and freeze-dry to obtain gliadin; the extracted wheat The precipitate after gliadin was mixed with water at a material-to-liquid ratio of 1:15, adjusted to pH 11.5, shaken and extracted at 60°C for 3 h, centrifuged, and absolute ethanol was added to the supernatant to prepare a 65% ethanol solution. Adjust the pH to 7, centrifuge overnight at 4°C, wash the precipitate with distilled water three times, and freeze-dry to obtain glutenin; weigh 10 g of gliadin and disperse it in an appropriate amount of distilled water, add 25 mL of tannic acid solution ( 20g / L), adjust the pH of the system to 11, react at 60°C for 48h, adjust the pH to 7.0 after the reaction, centrifuge at 4500 r / min for 20min, wash the precipitate with distilled water 3 times and freeze-dry to obtain a single Gliadin modified with nic acid...

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Abstract

The invention relates to a method for preparing a gluten protein fiber with improved performance and belongs to the field of wheat protein resource utilization. The method comprises the steps that firstly, purified gliadin and glutenin are prepared, then tannic acid is used for modifying the purified gliadin, the glutenin is added for obtaining a protein blending solution, sodium sulfite and ureaare used for dissolving the protein blending solution, and the protein blending solution is subjected to ultrasonic-microwave treatment in sequence; after spinning stretching, a citric acid solution is used for conducting crosslinking treatment on the gluten protein fiber, and the high-strength gluten protein fiber with an antibacterial function is obtained. The prepared gluten protein fiber is good in glossiness and soft and smooth in handfeeling, the dry-state breaking strength of the fiber reaches 0.9-1.4 cN / dtex, the dry-state breaking elongation reaches 30-40%, and at 20 DEG C and 65% R.H, the moisture regain is 10-12%. The antibacterial rate of the gluten protein fiber prepared through the method on staphylococcus aureus and escherichia coli reaches 80-85% and 85-90% respectively.

Description

technical field [0001] The invention relates to a method for preparing gluten fiber with improved performance, belonging to the field of utilization of wheat protein resources. Background technique [0002] With the rapid development of the global economy and the continuous improvement of people's living standards, consumers are more pursuing a healthy and environmentally friendly quality of life. Among them, the hygienic function of textiles has attracted great attention. Microorganisms are diverse and ubiquitous in nature. Some harmful bacteria, fungi and viruses will multiply rapidly in a suitable environment, and spread diseases through contact, affecting people's health. Textiles in everyday life are good habitats for these microorganisms and important vectors for disease transmission. Therefore, the development and research of antibacterial fibers is particularly important. The new protein fibers that have been studied include soybean protein fibers, casein fibers, ...

Claims

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Application Information

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IPC IPC(8): D01F8/02D01F1/10D01F11/02
Inventor 马晓军伏二伟
Owner JIANGNAN UNIV
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