Abstract: Sliced ​​cakes often use nitrogen-filled packaging. On the one hand, they prevent smashing of sliced ​​cakes. On the other hand, they also have the effect of inhibiting oxidative deterioration and mouldiness of sliced ​​cakes. However, many sliced ​​cakes are packaged in the storage process and the concentration of nitrogen, oxygen and other gases in the package will change, resulting in the cake failing to reach the identified shelf life. This article uses the HGA-02 headspace gas analyzer independently researched and developed by Jinan Languang Electromechanical Technology Co., Ltd. to test the gas content in the sliced ​​cake package, and briefly introduces the testing principle and test process of the equipment, which is used by the company to monitor the packaging. Gas content provides a quick and easy method.
Keywords : gas content, oxygen content, nitrogen content, carbon dioxide content, gas ratio, nitrogen-filled packaging, modified atmosphere packaging, headspace gas analyzer, slice cake, cakes, loquat bags, moldy
1 , the meaning
The sliced ​​cake is sweet, soft, delicious and attractive. It can be used as a nutritious breakfast and a tea companion. It is a popular pastry product. The rich nutrient composition and softness of slice cakes determine its characteristics of being easily oxidized and intolerant to extrusion. Therefore, it is often used to extend the shelf life of sliced ​​cakes by maintaining a certain amount of nitrogen in the package to maintain its shape integrity. Effect. Among them, the length of the shelf life of the sliced ​​cake is mainly related to the content of gas in the nitrogen-filled package. If the nitrogen content in the package is low and the oxygen content is increased, the oxygen-free environment in which the sliced ​​cake is located is destroyed and the oxygen is used. Under the slicing cake, the fat and oil components are easily oxidized, and they are prone to microbial growth. This is reflected in the appearance of hazel flavor and mildew in sliced ​​cakes. Therefore, it is of great significance to intensify the monitoring of the gas content in nitrogen-filled packaging to maintain the good quality of sliced ​​cakes.
2 , the status quo
Sliced ​​cakes generally use plastic composite film or aluminum composite film as packaging material. At present, there are no domestic and foreign standards for detection methods relating to the content of gas components in packaging, but the demand for testing internal gas components has become increasingly urgent.
Figure 1 common slice cake packaging
3 , test sample
A brand sliced ​​cake finished product packaging.
4 , testing equipment
Using a gas component content of Labthink HGA-02 headspace gas analyzer slice of cake in the finished package.
Figure 2 HGA-02 headspace gas analyzer
4.1 Equipment Principle
The device is equipped with an oxygen sensor and a carbon dioxide sensor to test the oxygen and carbon dioxide content of the package. For food packaging, the gas inside the package is mainly composed of three types: nitrogen, oxygen, and carbon dioxide gas. The sum of the contents of these three gases can be approximately 100% . Therefore, by testing the oxygen and carbon dioxide content of the package, You can get the nitrogen content.
4.2 Scope of application
This equipment is suitable for testing the content of oxygen and carbon dioxide in the sealed packaging bags, bottles, cans and other hollow packaging containers and their mixing ratios, such as coffee, cheese, milk tea, milk powder, bread, bean flour, ready-to-eat foods, medicines and other sealed bags. Or container. This equipment is not only suitable for laboratories, but also can be used to quickly and accurately evaluate the content and proportion of gas components in warehouses, production lines and other occasions.
4.3 Equipment Parameters
Oxygen measurement range is 0 to 100% , measurement value is 0 to 2% , measurement accuracy is ±0.1% ( absolute ) , measurement value is 2% to 100% , measurement accuracy is ±0.5% ( relative value ) . The CO2 measurement range is 0 ~ 100% and the measurement accuracy is ±2% . Oxygen and carbon dioxide sensors are imported components to ensure the test accuracy of the equipment. Configure a micro-printer to allow users to print test results at any time. Portable design and power supply, battery dual power supply mode, user-friendly in the laboratory or production site. LystemTM laboratory data sharing system is supported to manage test results and test reports.5 , the test process
(1) Divide 10 bags of sliced ​​cakes into two parts, 5 of which are directly tested, and the remaining 5 are left for half a month before testing.
(2) When testing, set the test parameters such as sampling time and analysis time on the equipment.
(3) Attach a sealing pad to the sample surface. Insert the sampling pin through the sealing pad and insert it into the sample. Take care not to insert the sampling pin into the slice cake to avoid plugging the sampling pin.
Figure 3 sample preparation
(4) Click the test button, the test begins, the instrument automatically displays the test results, that is, oxygen, carbon dioxide content.
6 , test results
The average oxygen content of the 5 bag samples tested directly was 3.69% , the carbon dioxide content was 0.11% , the nitrogen content was 96.20% , and the average oxygen content in the 5 samples after half a month of storage was 9.07% . The content is 0.12% , then the nitrogen content is 90.81% .
7. Conclusion
The gas content in nitrogen-filled packaging and modified atmosphere packaging has an important influence on the shelf life of the contents, and the content of gas components filled inside the packaging is not constant during the entire product shelf life. Therefore, the monitoring of the content of gas components in the packaging is strengthened. deep meaning. HGA-02 Headspace Gas Analyzer is used to test the content of gas components in sealed bags or packaging containers. The device is easy to operate and portable, and the test results are accurate and reliable. It can truly reflect the internal gas composition of the package. Labthink has been committed to providing global customers with comprehensive, professional testing services and equipment, focused on providing customers solve incurable diseases packaging, and other equipment For more information or service, you can visit the blue light on our website or call us . The more you understand, the more trust! Jinan Languang Electromechanical Technology Co., Ltd. is willing to take this opportunity to increase technical exchanges and cooperation with enterprises and institutions in the industry.
In order to deliver the Sheet Metal Parts intact it is essential to package the product properly and make Sheet Metal Parts Packed well. Thus the reason to careful packaging is not primarily aesthetic but we carry out in order to preserve the condition of our products. Packaging processes and Foam Packing material, if customer does not provide separate packaging plan, is determined by the mode of transportation. We attach a bar code to the Sheet Metal parts packed according to the needs of our customers for the easy identification. We also make customized packaging by customized boxes.
General packaging methods used at QL Sheet Metal:
Dispatched by post using sleeves, packets, standard corrugated boxes
Packing in corrugated boxes, with 5 layered, glued and stitched design boxes, using spacers
Pallet, fixed with straps, using slip-resistant interim plates, edge protectors, straps
Pallet with standard stretch foil
Paper packaging used for surface protection and separation purposes
VCI corrosion protection and desiccant packaging
Sheet Metal Products Packaging
Sheet Metal Products Packaging,Sheet Metal Parts Packed,Foam Packing,Box Packaging
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