Abstract: With the improvement of living standards, people are no longer unfamiliar with health care products. The use of packaging containers to ensure that fish oil maintains good quality during the shelf life is a common concern for health care products companies. This paper discusses the method of determining the oxygen barrier of packaging containers by using OX2/231 oxygen transmission rate tester from the barrier properties of packaging materials, which provides a reference for enterprises to choose suitable packaging materials.
Key words: barrier properties, oxygen barrier properties, oxygen transmission rate, oxygen permeation, oxygen transmission rate tester, packaging container, fish oil, health products, isobaric method
1 , meaning
Strengthening the body and preventing diseases has become one of the goals of life pursued by people. This change in attitude towards life has driven the prosperity of the health care products industry. Fish oil is a kind of health care products. It is rich in fish oil soft capsules. It is rich in essential unsaturated fatty acids such as EPA and DHA . It can help regulate blood lipids, help reduce blood concentration, prevent thrombosis, and help improve vision. Help improve memory and other functions.
The main functional components in fish oil , such as EPA , DHA and other unsaturated fatty acids, are easily oxidized in the presence of oxygen, exposure to high temperature environments, and exposure to light due to the specificity of their molecular structure, resulting in reduced or even lost function of fish oil. Therefore, the proper packaging and storage environment is an important factor affecting the quality of fish oil. The characteristics of fish oil to be protected from light and high temperature storage can be met by selecting opaque, opaque packaging containers and controlling storage and transportation conditions. The amount of oxygen that fish oil can reach during the shelf life is It is very related to the oxygen barrier property of the packaging container. The barrier properties of packaging materials depend on their material structure, processing technology and other factors, and can not be determined with the naked eye or simple calculation. Therefore, this paper introduces a test method that can accurately test the oxygen barrier properties of fish oil packaging containers.
2 , testing basis
Oxygen permeation is a physical indicator for characterizing the oxygen barrier properties of packaging materials. Commonly used test methods include isostatic method ( coulomb method ) and differential pressure method. The oxygen permeation of packaging containers is mostly determined by isostatic method. At present, there is no standard for oxygen permeability testing in packaging containers in China. The testing process in this paper is based on the American standard ASTM F1307 .
3 , test samples
The common packaging materials for fish oil soft capsules are glass bottles and plastic bottles. In this paper, a plastic bottle for fish oil soft capsule packaging is used as an example to test the oxygen permeation amount.
Figure 1 Fish oil soft capsule common packaging form
4 , test equipment
The testing equipment used in this paper is the OX2/231 oxygen transmission rate tester that meets the requirements of ASTM F1307 . This equipment is independently developed and designed by Jinan Languang Electromechanical Technology Co., Ltd.
Figure 2 OX2/231 oxygen transmission rate tester
4.1 Test principle
The equipment is developed based on the principle of equal pressure. When testing the container sample, the sample is sealed on the sample holder and sealed in a closed space. During the test, the outside of the container flows with oxygen, and the inside of the container flows with high-purity nitrogen. Under the action, the oxygen outside the container penetrates into the inside of the container through the container, and is carried by the flowing nitrogen gas to the sensor for testing and analysis, thereby obtaining the result of the oxygen permeability of the container sample and the like.
4.2 Equipment parameters
- The test range of the container sample is 0.0001 ~ 10 cm 3 /pkg·d and the resolution is 0.0001 cm 3 /pkg·d . The device has a wide measuring range and high resolution; the test range of film and sheet samples is 0.01 ~ 1000 cm 3 /m 2 ·d, and the resolution is 0.01 cm 3 /m 2 ·d .
- The equipment is equipped with three test chambers, and the average of three samples can be obtained in one test, which improves the testing efficiency of the equipment.
- The temperature control range of the equipment is 15 ~ 55 °C , the temperature control accuracy is ±0.1 °C , the humidity control range is 0%RH , 15%RH ~ 90%RH , 100%RH , and the humidity control accuracy is ±1%RH . Can meet the requirements of different test conditions of users.
- Provides fast calibration of standard membranes to ensure the accuracy and versatility of the test data.
- Support LystemTM laboratory data sharing system to manage test results and test reports.
4.3 Scope of application
(1) This equipment is suitable for testing the oxygen transmission rate of packaging materials such as containers, films and sheets.
- The container includes bottles, bags, cans, boxes, barrels, etc. made of plastic, rubber, paper, paper-plastic composite, glass, metal, etc., such as cola bottles, peanut oil barrels, Tetra Pak, jelly cups, yogurt cups, metal three Cans, toothpaste cartilage, cosmetic plastic packaging, etc.
- The film type includes various plastic film, plastic composite film, paper-plastic composite film, co-extruded film, aluminized film, aluminum foil, aluminum-plastic composite film and the like.
- The sheet material includes various engineering plastics, rubber and other sheets, such as PP sheets, PVC sheets, PVDC sheets, and the like.
(2) The equipment can meet a number of national and international standards, such as ASTM F1307, ISO 15105-2, GB / T 19789, ASTM D3985, ASTM F2622, ASTM F1927, JIS K7126-2, YBB00082003 like.
5 , the test process
(1) The sample to be tested is tightly sealed on the sealing device of the sample holder with a quick-setting glue, and then the sample holder is installed in the device, and the sample and the sealing device are sealed with an aluminum foil-type sealed bag.
(2) Set the test temperature, test humidity and other parameter information, click the test option, the test starts.
(3) The equipment automatically calculates and displays the test results according to the changes in oxygen concentration tested.
6 , test results
The oxygen permeation amount of the plastic container for packaging fish oil soft capsules detected in this paper is 0.00631 cm 3 /(pkg·d) .
7 , conclusion
The speciality of fish oil itself requires that its packaging materials should have high barrier properties, good light-shielding properties, and avoid contact with high temperature environment during transportation and storage. The commonly used packaging containers for fish oil packaging can be tested for oxygen barrier performance using the OX2/231 Oxygen Permeability Tester. The equipment is easy to operate, the test procedure is simple, the test results are accurate, and the test efficiency is high. In addition, the OX2/231 oxygen transmission rate tester can also be used for testing the oxygen barrier properties of packaging materials such as films and sheets, thus providing data support for enterprises in the screening, quality control and supervision of packaging materials. Jinan Languang Electromechanical Technology Co., Ltd. is committed to providing professional packaging testing equipment and intimate packaging testing services to customers all over the world. It provides customers with barrier testing services for tens of thousands of times a year. Understanding of the relevant testing equipment and testing information services, you can visit w Labthink company view or direct call us. Labthink is looking forward to enhancing technical exchanges and cooperation with enterprises and institutions in the industry!
[Sample requirements]
The collected nasopharyngeal swab samples should be transported at 2°C to 8°C and sent for inspection immediately, and the sample delivery and storage time should not exceed 48 hours.
[Testing method]
1. Before sampling, mark the relevant sample information on the label of the sampling tube.
2. According to different sampling requirements, use a sampling swab to sample in the nasopharynx.
3. The specific sampling methods are as follows:
a) Nasal swab: Gently insert the swab head into the nasal palate, stay for a while and then slowly turn to exit. Wipe the other nostril with another swab, immerse the swab head in the sampling solution, and discard the tail.
b) Pharyngeal swab: Wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with a swab, also immerse the swab head in the sampling solution, and discard the tail.
4. Quickly put the swab into the sampling tube.
5. Break the part of the sampling swab higher than the sampling tube, and tighten the tube cover.
6. Freshly collected clinical specimens should be transported to the laboratory within 48 hours at 2°C to 8°C.
[Explanation of test results]
After the sample is collected, the sampling solution turns slightly yellow, which will not affect the nucleic acid test result.
[Limitations of the test method]
1. For samples that are seriously contaminated due to improper storage after collection, the final test results will be affected.
2. If the sample is not stored at the specified temperature, the final test result will be affected.
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