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Wheat protein coating food wrap paper and preparation method thereof

A technology for food wrapping paper and protein, applied in the directions of wrapping paper, wrapping paper, packaging, etc., can solve the problem of insufficient mechanical strength, and achieve the effect of ensuring the original taste and preventing the loss of flavor.

Inactive Publication Date: 2013-01-09
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical strength of the protein film is not enough, so the protein is used for the coating of paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Preparation of base paper: Select kraft softwood pulp as the original pulp, add 1.5% cationic starch (based on the weight of absolute dry pulp) to the pulp, and make paper. The basis weight of the base paper is 60 g / m2. Beating, the beating degree is 30~60°SR, and then the wet paper sheet is obtained through pulp papermaking, the wet paper sheet is pressed, dehydrated, and dried at 95~110°C to obtain the base paper;

[0019] (2) Preparation and coating of paint: Weigh 20 grams of wheat protein powder, pour it into a sealed bottle, add 100 mL of sodium sulfite solution with a weight concentration of 0.08%, shake it to disperse it; let it stand for 30 minutes, and then stir it under magnetic force Slowly add 100 mL of acetic acid solution with a volume concentration of 2% under the conditions, control the pH to 4, stir well to make the mixture evenly mixed, and set aside. Coat the obtained coating on the paper obtained in step (1) by plastic pressing method; during pl...

Embodiment 2

[0024] (1) Preparation of base paper: take 100 parts of kraft softwood pulp based on the dry pulp weight as raw pulp for beating, and the beating degree is 55°SR, and then pulp papermaking to obtain wet paper sheets, wet paper sheets Press, dehydrate, and dry at 110°C to obtain the base paper; the basis weight of the base paper is 105 g / m2.

[0025] (2) Weigh 30 grams of wheat protein powder, pour it into a sealed bottle, add 100 mL of sodium sulfite solution with a weight concentration of 0.1%, shake it to disperse it; let it stand for 40 minutes, and then slowly add the volume concentration of 100mL of 3% acetic acid solution, control the pH to 4, stir well to make the mixture evenly mixed, set aside. Coat the obtained coating on the paper obtained in step (1) by plastic pressing method; during plastic pressing, the feed speed is 6m / min, the temperature is 40°C, and the surface pressure is 150kg / cm 3 .

[0026] Apply the obtained coating on the paper obtained in step (1) b...

Embodiment 3

[0030] (1) Preparation of base paper: take 100 parts of kraft softwood pulp based on absolute dry pulp weight, and perform beating with a beating degree of 60°SR, and then obtain wet paper through pulp papermaking, wet paper pressing, The base paper was obtained after dehydration and drying at 95°C; the basis weight of the base paper was 70 g / m2.

[0031](2) Preparation and coating of paint: Weigh 25 grams of wheat protein powder, pour it into a sealed bottle, add 100 mL of sodium sulfite solution with a weight concentration of 0.09%, shake it to disperse it; let it stand for 30 minutes, and then stir it under magnetic force Slowly add 100 mL of acetic acid solution with a volume concentration of 2.5% under the conditions, control the pH to 4, stir well to make the mixture evenly mixed, and set aside. Coat the obtained coating on the paper obtained in step (1) by plastic pressing method; during plastic pressing, the feed speed is 5m / min, the temperature is 25°C, and the surfac...

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Abstract

The invention relates to wheat protein coating food wrap paper and a preparation method of the wheat protein coating food wrap paper, and belongs to the technical field of food packaging. The preparation method comprises the following steps of: preparing base paper, preparing coating liquid, and coating based on coating weight of 5 to 60g / m<2>; coating components are prepared by the following components in weight concentration: 20 to 50% of wheat protein, 0.05 to 0.1% of sodium sulfite, and 1 to 4% of acetic acid. The wheat protein coating food wrap paper produced by the invention can be applied to packaging common food, and also can be applied to packaging food which have special requirements on oxygen permeation rate, carbon dioxide permeation rate and resistance to penetration and loss of 2-heptanone and 2-nonanone and the like.

Description

technical field [0001] The invention relates to a wheat protein-coated food packaging paper and a preparation method thereof, belonging to the technical field of food packaging. Background technique [0002] With the increasing awareness of green food and green food packaging, the research and development of safe and non-toxic packaging materials has become a topic of concern for the food industry and related industries. [0003] Whether traditional food packaging materials are plastic, paper, paper-plastic composite paper, aluminum-plastic composite paper or other composite paper, the residues of some industrial raw materials in the production process after packaging food will pollute the food more or less. Especially in the printing process of packaging paper, a large amount of volatile organic solvents such as acetone and xylene are used, which will bring secondary pollution to food, causing serious hidden dangers in food safety, and bringing food recalls to enterprises. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D21H27/10D21H19/50D21H19/64
Inventor 龙柱彭慧
Owner JIANGNAN UNIV
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