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Manufacturing method of packing material capable of sensing food freshness

A technology of packaging materials and manufacturing methods, which is applied in the field of food packaging materials, can solve problems such as time-consuming and labor-intensive, and achieve the effect of broad application prospects

Inactive Publication Date: 2011-05-11
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current volatile gas detection in food is mainly gas chromatography and sensory evaluation, both of which are time-consuming and laborious, and require professionals to complete

Method used

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  • Manufacturing method of packing material capable of sensing food freshness
  • Manufacturing method of packing material capable of sensing food freshness
  • Manufacturing method of packing material capable of sensing food freshness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] There are mainly four types of food in daily life, namely eggs and milk, meat, fish and fruits and vegetables, each of which emits a different smell. There are two types of plastic wrap used for these foods. One is a special type of plastic wrap, which is specially used for a new type of freshness preservation of a certain type of food. Therefore, the specific type of plastic wrap is divided into egg and milk type plastic wrap, meat plastic wrap, Fish cling film and fruit and vegetable cling film. The other is a unified type of fresh-keeping film, which can be used as a new type of fresh-keeping for various foods. Among them, the odor component emitted by the corruption of eggs and milk is mainly hydrogen sulfide, so choose gas color-sensitive materials that have obvious changes in color when reacting with hydrogen sulfide, such as iron porphyrin, tin porphyrin, methylene blue, Nile red, fluorescent yellow, etc. The gas color-sensitive material of the new type of fresh...

Embodiment 2

[0023] The selection of gas color-sensitive materials is consistent with the method in Example 1, and acid-free paper is used as the food packaging base material. The production method is the same as the method in Example 1, except that the gas color-sensitive material is sprayed onto the acid-free paper instead of the plastic wrap by point spraying.

[0024] The unified packaging material that embodiment 1 and example 2 make all can be used as the anti-counterfeiting packaging material of cosmetics, Figure 5 It is the gas color sensitive material color of two commonly used perfumes in the market. Figure 5 (a) is the unique color after the gas color-sensitive material on acid-free paper interacts with Lancome (LANCOME) sensory hypnotic perfume, Figure 5 (b) is the unique color after the color-sensitive material on the acid-free paper interacts with HUGO BOSS perfume for women. This shows that every kind of perfume has its unique fragrance, and the effect of these fr...

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Abstract

The invention discloses a manufacturing method of a packing material capable of sensing food freshness, which comprises the steps as follows: depending on the types of foods to select different gas-sensitive color change materials of which the colors can change along with odors sent out due to the deterioration of the foods; selecting a food-grade freshness preservation film or food-grade acid-free paper as a base material for food packing; dissolving different gas-sensitive color change materials in the corresponding organic solvents to prepare different gas-sensitive color change material solutions with the concentration of 0.1-0.5 mol / L; adding 5 mol / L stabilizing agents in the different gas-sensitive color change material solutions; and uniformly spraying obtained products onto the center of substrate material for food packing at certain intervals in an ink and spot spraying manner so as to form a group of gas-sensitive color change material point arrays or a row of gas-sensitive color change material points. The packing material manufactured with the method not only has the same freshness preservation function as an ordinary packing material, but also can sense the freshness degree and quality of foods and can be used in the packing of medicines and cosmetics and as well as anti-counterfeit packing of chemical industry.

Description

technical field [0001] The invention relates to a food packaging material, in particular to a manufacturing method of a packaging material capable of perceiving the freshness and quality of food. Background technique [0002] Most of the current food packaging materials are based on their shape, color and function. The function is mainly to improve the air permeability of the packaging material by adding rare metals to the material and through special processes such as nanometer and silicon windows, so as to prolong the shelf life of food. and shelf life. However, the quality of packaged food, especially fresh food, and whether it has deteriorated must be obtained through a series of physical and chemical analysis methods. At present, there is no packaging material that can perceive the freshness of food, so that consumers or quality inspectors can know the freshness of the food at a glance. [0003] Volatile gases (VOCs) in food are mainly small organic molecules such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D81/24
CPCB65D79/02G01N31/22
Inventor 邹小波赵杰文石吉勇黄星奕蔡健荣陈全胜林颢
Owner JIANGSU UNIV