Biological and physical dual-preservation storage method for sandwiches

A biophysical and sandwich technology, applied in biological packaging, food science, preservation of bakery products, etc., can solve the problems of food waste and short storage time, and achieve the effect of ensuring high content, fresh luster, and maintaining internal and external air pressure

Inactive Publication Date: 2017-10-20
青岛德信食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the food waste and economic loss caused by the short storage time and perishability of the current sandwiches

Method used

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  • Biological and physical dual-preservation storage method for sandwiches
  • Biological and physical dual-preservation storage method for sandwiches
  • Biological and physical dual-preservation storage method for sandwiches

Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0030] Dissolve 1% chitosan, 3% tea polysaccharide, 8% peanut red coat extract, and 0.01% citral as biologically active substances in water, spray on the inner wall of packaging bags and box-type containers, and dry at room temperature to form a natural plastic wrap; Pre-cool the fresh sandwiches after sterilization, put them into the packaging container, and seal the packaging container; fill the packaging container with a mixed gas of 26% carbon dioxide, 73% nitrogen, and 1% carbon monoxide, control the 81.5% of the inside of the packaging container, and close the inflation port; Use 42ml of the above mixed gas per 100g sandwich, and maintain the balance of internal and external air pressure; after sealing, the oxygen content in the package is reduced to 0.5%; the packaging container is boxed, double-layer material, the outer layer is kraft paper, and the inner layer is nano-scale polyolefin-based film , the inner wall of the inner layer is added with a fresh-keeping coating....

Embodiment 2

[0032]Dissolve 1.5% chitosan, 1.5% tea polysaccharide, 3.5% peanut red coat extract, and 0.1% citral in water; spray it on the inner wall of packaging bags and box-type containers, and cure and dry it with ultraviolet radiation to become a natural plastic wrap; fresh sandwiches Pre-cool after sterilization, put it into the packaging container, and seal the packaging container; fill the packaging container with a mixed gas of 28% carbon dioxide, 70.5% nitrogen, and 1.5% carbon monoxide, and use 48ml of the above-mentioned mixed gas to control the packaging container for each 100g sandwich The humidity is 82%, and the air filling port is closed; the inner wall of the packaging container is added with a fresh-keeping coating;

[0033] Among them, chitosan is chitosan obtained by deacetylation of crab chitin, peanut red coat extract contains non-starch polysaccharide and proanthocyanidin, and non-starch polysaccharide proanthocyanidin is peanut obtained by extracting peanut red coa...

Embodiment 3

[0036] Dissolve 4.5% chitosan, 6.5% tea polysaccharide, 2.5% peanut red coat extract, and 0.25% citral in water, spray it on the inner wall of the packaging bag and box container, and dry it with far-infrared radiation to become a natural fresh-keeping film; fresh The sandwiches are sterilized by irradiation, pre-cooled, put into the packaging container, and the packaging container is sealed; the mixed gas of carbon dioxide, nitrogen and carbon monoxide is filled into the packaging container, and the proportion of the mixed gas is 33% of carbon dioxide, 63.5% of nitrogen, and 3.5% of carbon monoxide; control The humidity in the packaging container is 84%, and the air filling port is closed. Use 49ml of the above mixed gas per 100g sandwich, and maintain the balance of internal and external air pressure; the packaging container is boxed, double-layered, the outer layer is kraft paper, the inner layer is nano-scale polyolefin-based film, and the inner wall of the inner layer is a...

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Abstract

The invention relates to a biological and physical dual-preservation storage method for sandwiches. The method includes the following steps that the inner wall of a package container is sprayed with a preservation coating composed of chitosan, tea polysaccharide, peanut skin extract and other biological active substances. The fresh sandwiches are sterilized, pre-cooled and put into the package container, the package container is sealed, mixed gas of carbon dioxide, nitrogen and carbon monoxide is charged into the package container, the humidity in the package container is controlled, and the gas-charging opening is sealed; the proportion of oxygen is lowered to 1% or below, the carbon dioxide is 25-35%, the nitrogen is 65-75%, and the carbon monoxide is 0.5-5%; in the environment with low oxygen and high carbon dioxide, growing and propagating of harmful microorganisms can be effectively restrained, the shelf life of the sandwiches can be prolonged, the environment with the suitable humidity can effectively keep suitable turgor pressure of cells of vegetables and meat in the sandwiches, the small amount of carbon monoxide can keep the color and taste of the vegetables and meat, and the freshness and high quality of the products can be guaranteed.

Description

technical field [0001] The invention relates to a biophysical double fresh-keeping storage method for sandwiches, which belongs to the field of food storage and fresh-keeping. Background technique [0002] With the development of the economy and the improvement of living standards, people have more and more demands for high-quality, long-shelf-life convenience foods, which has promoted the development of many multi-component composite foods, which are usually made of soft, Sandwiches are composed of moist fillings and relatively dry breads, cakes or crispy cereals. Sandwiches are one of them. Sandwiches are made with a variety of nutrient-rich ingredients. They have a good taste and rich nutrients, which can quickly replenish the body's energy. At the same time, the fiber, protein, and starch in the sandwich are well matched, which can promote gastrointestinal motility and help digestion. The effect of invigorating the stomach and eliminating food. [0003] Due to the vari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A21D15/00B65D81/20
CPCA21D15/00B65D81/2069B65D81/2092Y02A40/90Y02W90/10
Inventor 孙玉强梁慧德董文斌迟淑慧
Owner 青岛德信食品有限公司
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