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Salicylic acid konjac preservative film and preparation method thereof

A technology of salicylic acid and fresh-keeping film, which is applied in the direction of fruit and vegetable preservation, food preservation, food ingredients as anti-microbial preservation, etc. It can solve the problems of migration of small molecule preservatives, difficult long-term sustained release, large amount of konjac, etc. Achieve the effect of being conducive to large-scale production and practical application, solving food safety problems, and simple process

Pending Publication Date: 2021-06-04
武汉科亿华科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the konjac consumption in the konjac preservative film technology in the prior art, the cost is high, difficult to process, effective small molecule preservative migration, difficult long-term sustained release and other problems

Method used

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  • Salicylic acid konjac preservative film and preparation method thereof
  • Salicylic acid konjac preservative film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment provides a kind of salicylic acid konjac fresh-keeping film, which is prepared through the following process: First, after the non-woven fabric substrate is passed through 1wt% konjac sol, the molecular weight of the main component konjac glucomannan is 100,000 Dal After a while, dry to a moisture content of 20%, and then pass the salicylic acid oxidation system solution prepared according to the ratio of water 25L: 1.0M hydrogen peroxide 0.5L: vitamin C 54g: salicylic acid 25g, react for 30 minutes and then pass through the surface After rinsing, it is dried to a moisture content of 20%, and the salicylic acid konjac fresh-keeping film is made.

Embodiment 2

[0024] This embodiment provides a kind of salicylic acid konjac fresh-keeping film, which is prepared through the following process: First, after the non-woven fabric substrate is passed through 2wt% konjac sol, the molecular weight of the main component konjac glucomannan is 100,000 Dales After a while, dry to a moisture content of 18%, and then pass the salicylic acid oxidation system solution prepared according to the ratio of water 25L: 1.0M hydrogen peroxide 0.5L: vitamin C 54g: salicylic acid 25g, react for 40 minutes and then rinse the surface Finally, it is dried to a moisture content of 18%, and the salicylic acid konjac fresh-keeping film is made.

Embodiment 3

[0026] This embodiment provides a kind of salicylic acid konjac fresh-keeping film, which is prepared through the following process: First, after passing the non-woven fabric substrate through 10wt% konjac sol, the main component konjac glucomannan is 2-10 sugars The oligosaccharides composed of units are dried to a moisture content of 15%, and then the salicylic acid oxidation system solution prepared according to the ratio of 25L of water: 1.0M hydrogen peroxide 0.5L: 54g of vitamin C: 25g of salicylic acid is reacted for 30 After rinsing through the surface in 10 minutes, dry it to a moisture content of 15%, and then make a salicylic acid konjac preservative film.

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Abstract

The invention provides a salicylic acid konjac preservative film. The preservative film is prepared by a non-woven fabric base material, konjac sol and a salicylic acid oxidation system for oxidizing and grafting the konjac sol. Meanwhile, a preparation method of the preservative film is also provided. Cheap non-woven fabrics are taken as a base material, and konjac is filled in the surface and holes of the base material, so that high costs of konjac film formation can be solved, and tape casting process with low efficiency and hard operation control can be avoided; high strength and easy folding of practical application can be realized; continuous surface coating and surface modification of non-woven fabric coiled materials can be conveniently realized; and salicylic acid can be grafted to konjac through the salicylic acid oxidation system, and small molecule salicylic acid of ungrafted parts, hydrogen peroxide solutions and vitamin C are removed after surface washing, therefore, food safety problems caused by the entering of the salicylic acid into food can be effectively solved, and sustained release and long-term effect of the salicylic acid can be achieved.

Description

technical field [0001] The invention belongs to the technical field of food preservation, and in particular relates to a salicylic acid konjac fresh-keeping film and a preparation method thereof. Background technique [0002] Konjac has many reports on its application as a preservative because of its excellent film-forming properties and moisturizing properties. Various documents have reported that it is used as a coating agent, such as CN201710511428. Difficulty coating film on the surface of food, migration of components in the film coating and other issues; there are also some documents that make it into a preservative film, such as CN201610228905.3, CN201310224297.5, etc. However, these documents all use konjac as the main ingredient The film is prepared by casting method, which has the problems of difficult processing, high cost and poor effect. [0003] The application of salicylic acid as a preservative also has many studies, such as CN201910497161.9, CN201510186834....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/3508A23L3/3544A23L3/3472A23B7/16A23B7/154
CPCA23L3/3508A23L3/3544A23L3/3472A23B7/16A23B7/154A23V2002/00A23V2250/5066A23V2250/708A23V2200/10
Inventor 周湘汉李斌李晶孟庆阳黄建华
Owner 武汉科亿华科技有限公司
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