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Method for testing oxygen transmission rate of package bag

A technology of oxygen permeability and packaging bags, which is applied in the field of testing the oxygen permeability of packaging bags, can solve the problem of high equipment prices and achieve the effect of simple equipment

Inactive Publication Date: 2009-10-28
GUANGDONG GUANGYI TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is necessary to use professional testing equipment to detect the oxygen permeability of the film, but the price of the equipment is relatively high, which is an unaffordable investment for ordinary manufacturers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A method for testing the oxygen permeability of a packaging bag in the present invention comprises firstly sterilizing the prepared potato culture medium at 121° C. and 0.1 m atmospheric pressure for 30 minutes, and then standby.

[0015] The second step is to take out the refrigerated Penicillium indicator bacteria, scrape off the bacterial lawn, and mix it into sterile water to make a concentration of 10 7 / ml Penicillium suspension.

[0016] The third step is to mark symbols A, B, and C on the sample packaging bags OPP / CPP, PET / CPP, and KOP / CPP respectively, and add 3ml of penicillium suspension to A, B, and C and the packaging bags to be tested.

[0017] The fourth step is to add 100ml of culture medium cooled to 40-50°C to the above-mentioned packaging materials, shake evenly, and after cooling, vacuumize and seal the seal. To ensure the strength and quality of the seal, do three parallel experiments for each sample.

[0018] The oxygen permeability of the three m...

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Abstract

The invention relates to a test method, in particular to a method for testing the oxygen permeability of a packaging bag. The detection method of the present invention utilizes the characteristic that the growth and reproduction of mold requires oxygen to maintain life. The bacteria are inserted into the culture medium, sealed together with the deoxidizer into the packaging material for the oxygen permeability rate to be tested, and placed in a 28±1°C Cultivate in the incubator for 3 to 5 days. The medium with good mold growth means that the oxygen permeability of the packaging material is high, and vice versa. The invention provides a convenient method for testing the oxygen permeability of packaging materials, the equipment is simple, and general manufacturers can operate by themselves, but the method needs packaging materials with known oxygen permeability as a comparison, and the test results are qualitative results.

Description

Technical field: [0001] The invention relates to a test method, in particular to a method for testing the oxygen permeability of a packaging bag. technical background: [0002] At present, the food industry widely uses plastic film to seal vacuum-packed food to prevent food from oxidative deterioration. The main function of vacuum packaging is to remove oxygen to help prevent food from deterioration. The principle is relatively simple, because food spoilage is mainly caused by microbial activities. , and the survival of most microorganisms needs oxygen. Vacuum packaging uses this principle to remove the oxygen in the packaging bag and food cells, so that microorganisms lose their "living environment". In addition to inhibiting the growth and reproduction of microorganisms, vacuum deoxygenation has another important function to prevent food oxidation. Because oily foods contain a large amount of unsaturated fatty acids, they are oxidized by oxygen, making food taste and deter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00C12Q1/02
Inventor 梁嘉臻
Owner GUANGDONG GUANGYI TECH IND