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Biodegradable vinasse protein film as well as preparation method and application thereof

A distiller's grain protein and biodegradation technology, which is applied in the field of distiller's grain protein film and its preparation, can solve the problems of difficulty in meeting the functional requirements of different products, low mechanical properties and moisture resistance of distiller's grain protein film, and solve pollution problems and improve Water resistance, mechanical strength, and the effect of expanding the range of applications

Inactive Publication Date: 2021-10-15
杭州靡特洛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, protein films in the research field are relatively concentrated on soybean protein and casein, and waste distiller's grains are rarely used as the development direction. The application of distiller's grains protein films in packaging materials turns waste into treasures, realizes higher value-added products, and expands The application side of waste distiller's grains, and prepared into thin film materials are suitable for the outer packaging of various products. The extraction of distiller's grains protein is simple, low in price, and the molecule has unique structural characteristics, and the side chain contains abundant high-activity groups, which is convenient for modification , but the mechanical properties and moisture resistance of distiller's grain protein films are often lower than those of synthetic plastics, which also makes it difficult to meet the functional requirements of different products

Method used

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  • Biodegradable vinasse protein film as well as preparation method and application thereof
  • Biodegradable vinasse protein film as well as preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0026] A preparation method of a biodegradable distiller's grain protein film, comprising the following steps,

[0027] (1) Extraction of distiller's grain protein: Add quantitative sodium hydroxide and alcohol mixed solution to extract the ground and pulverized fresh distiller's grains. Leaching, after combining the extracts, adding hydrochloric acid solution, adjusting the pH, then washing with deionized water, centrifuging, repeating three times, and spray drying to obtain distiller's grain protein;

[0028] (2) Distiller's grain protein modification: the ratio of protein modification, in parts by mass, includes 60-85 parts of distiller's grain protein, 5-15 parts of plasticizer, 0.3-2 parts of crosslinking agent, and 0.3-2 parts of chain extender 10-30 parts of glycol oligomers and 0.3-1 parts of water-repellent agent, put the distiller's grain protein into the internal mixer first, and then put in the chain extender, glycol oligomers, cross-linking agent, The plasticizer...

Embodiment 1

[0035] This embodiment provides a method for preparing a biodegradable distiller's grain protein film, which mainly includes the following steps:

[0036] (1) Distiller's grain protein modification: protein modification raw material ratio, in parts by mass, 60 parts of distiller's grain protein, 15 parts of plasticizer, 0.3 part of crosslinking agent, 2 parts of chain extender, 10 parts of diol oligomer 1 part, 1 part of anti-water agent, put the distiller's grain protein into the internal mixer first, and then put in the chain extender, glycol oligomer, cross-linking agent, plasticizer and anti-water agent in turn, at a temperature of 90°C and a speed of Under the condition of 35rpm, react for 50min to obtain the modified protein, which is ready for use;

[0037] (2) Process the modified protein obtained in step (1) by casting and forming a film to obtain a thin film of distiller's grain protein.

Embodiment 2

[0039] This embodiment provides a method for preparing a biodegradable distiller's grain protein film, which mainly includes the following steps:

[0040](1) Distiller's grain protein modification: The ratio of protein modification raw materials, in terms of parts by mass, is 85 parts of distiller's grain protein, 5 parts of plasticizer, 2 parts of crosslinking agent, 0.3 part of chain extender, and 30 parts of diol oligomer. part, 0.3 part of water-resistant agent, put the distiller's grain protein into the internal mixer first, and then put in chain extender, glycol oligomer, cross-linking agent, plasticizer and water-resistant agent in turn, at a temperature of 90°C and a speed Under the condition of 35rpm, react for 50min to obtain the modified protein, which is ready for use;

[0041] (2) Process the modified protein obtained in the step (1) by casting into a film to obtain a distiller's grain protein film.

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Abstract

The invention relates to a biodegradable vinasse protein film as well as a preparation method and application thereof, and the vinasse protein film is obtained by processing vinasse protein modified by protein through a film forming technology, the vinasse protein modified by the protein comprises vinasse protein, a plasticizer, a cross-linking agent, a chain extender, a dihydric alcohol oligomer and a water repellent agent. The invention further provides a preparation method and application of the biodegradable vinasse protein film. By modifying the vinasse isolated protein, the vinasse protein not only has the machinability of traditional plastics, but also improves the water resistance and mechanical strength of the vinasse protein film, so that the vinasse protein film better conforms to the characteristics of a film packaging material, is used for replacing a traditional non-degradable plastic film, and helps to solve the pollution problem of the traditional plastics; meanwhile, the application range of the vinasse is also expanded.

Description

technical field [0001] The invention belongs to the field of biodegradable biopolymer material processing, in particular to a biodegradable distiller's grain protein film and its preparation method and application. Background technique [0002] All over the world including China, there are many manufacturers of wine products, and distiller's grains, as a by-product in the wine making process, have a huge output. Beer is the third most consumed beverage in the world after water and tea. In China alone, the beer output in 2020 has reached 34.111 million liters, and the resulting beer grains have exceeded 10 million tons. In addition, liquor, rice wine, etc. It occupies an important position in my country's alcoholic beverage industry. For example, the total output of liquor in China will be 7.4073 million liters in 2020, and the by-product distiller's grains will exceed 100 million tons. The processing and reuse of these distiller's grains has also become a major problem. So f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08L67/00C08L77/00C08L79/00C08K5/053C08K5/17C08K5/07C08K5/29C08J5/18
CPCC08J5/18C08J2389/00C08J2467/00C08J2477/00C08J2479/00C08K5/053C08K5/17C08K5/07C08K5/29
Inventor 罗易陈圣福范俊陈琛
Owner 杭州靡特洛新材料科技有限公司
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