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Aqueous solvent composition for dissolving wheat preservation protein and use thereof

A water-based solvent and protein storage technology, which is applied in the direction of single-component protein rayon, fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of protein degradation and expensive solvents, and achieve strong solubility, which is conducive to industrial production. The effect of short production cycles

Inactive Publication Date: 2008-02-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Strong denaturants such as hexafluoroisopropanol can dissolve wheat storage proteins (Woerdeman DL, Ye P, Shenoy S, Pamas RS, Wnek GE, Trofimova O, Electrospun fibers from wheat protein: investigation of the interplay between molecular structure and the fluid dynamics of the electrospinning process.Biomacromolecules, 6, 707-712, 2005), but the solvent is expensive
In the presence of 1wt% reducing agent sodium sulfite, high concentration (8M) aqueous urea solution can also be used to dissolve wheat storage protein (Reddy N, Yang Y, Novel Protein Fibers from Wheat Gluten.Biomacromolecules, 8, 638-643, 2007), However, high concentrations of urea can easily cause protein degradation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 5g of lithium hydroxide and 1g of sodium sulfite, add 94g of deionized water to form an aqueous solvent composition, add 5g of gluten powder under stirring conditions, and form a solution with a protein concentration of 5wt%.

Embodiment 2

[0022] Take by weighing 25g sodium hydroxide, 5g sodium thiosulfate, add in 70g deionized water, be made into aqueous solvent composition, add 20g gluten powder under stirring condition, filter with 200 mesh filter screens, use centrifuge at 4000 rpm Centrifuge at 1 min for 15 min to remove air bubbles, inject the fibers into the coagulation solution containing 5 wt% sodium sulfate and 5 wt% sulfuric acid, wash with water, dry naturally, and heat-treat at 100°C for 30 min. The tensile strength of the obtained fiber measured by the electronic tensile machine was 123±5MPa, the elongation at break was 34.5±3.0%, and the Young's modulus was 6±0.5GPa.

Embodiment 3

[0024] Take by weighing 10g potassium hydroxide, 3g sodium dithionite, add in 87g deionized water, be made into aqueous solvent composition, add 10g gluten powder under stirring condition, filter with 200 mesh filter screens, use centrifuge at 4000 rev / min Centrifuge for 15 minutes to remove air bubbles, prepare fibers with a simple spinning machine, coagulate in a coagulation solution of 15wt% sodium sulfate and 15wt% sulfuric acid, wash with water, dry naturally, and heat-treat at 140°C for 10 minutes.

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PUM

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Abstract

The present invention discloses a wheat storage protein soluble waterborne solvent compound and application. The waterborne solvent compound comprises 5-25wt percent of alkaline metal hydroxide, 1-5wt percent of sulfur-containing compounds, and water. The waterborne solvent compound can be used to dissolve wheat storage protein and to prepare wheat protein fiber. The present invention has the beneficial effects below. Firstly, the waterborne solvent compound provided by the present invention has strong dissolving capacity and can dissolve industrial gluten flour including starch impurities completely under normal temperature; secondly, the waterborne solvent compound provided by the present invention causes no degradation of wheat storage protein and has a long period of solution storage; thirdly, the wheat protein fiber provided by the present invention has a short production cycle and the production technique is simple, being favorable for industrialized production.

Description

technical field [0001] The invention relates to an aqueous solvent composition for dissolving wheat storage protein and its application, which belongs to the field of natural polymers, and also belongs to the fields of chemical industry and materials. Background technique [0002] In recent years, due to reasons such as environmental protection, shortage of petrochemical resources, and rising oil prices, renewable and degradable plant resources such as natural polysaccharides and proteins have been used as chemical raw materials to prepare environmentally friendly biodegradable plastics or edible packaging films. Materials, highly valued in academia and industry, has become one of the frontiers of polymer materials science and process engineering. Wheat storage protein contains 40-50% gliadin and 35-45% glutenin, and has excellent film-forming and plastic processing properties. The industrial product of wheat storage protein is gluten (protein content 70-85%), the global ou...

Claims

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Application Information

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IPC IPC(8): C08J3/02C08L89/00C08K3/30D01F4/00
Inventor 宋义虎郑强
Owner ZHEJIANG UNIV
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