물성 특성장비
가스분석기
Gas analyzer
A.Krüss
In order to be successful on the market, manufacturers of sensitive or perishable products must be able to guarantee first-class quality over a long period of time. This applies,
가스분석기
Gas analyzer
Gas analyser applications
- In order to be successful on the market, manufacturers of sensitive or perishable products must be able to guarantee first-class quality over a long period of time. This applies, in particular, to the food industry but also the electronics, pharmaceutical or cosmetics industry.
Modified Atmosphere Packaging (MAP) plays a decisive role in this. Typical protective gases are nitrogen (N²), carbon dioxide (CO²) and oxygen (O²) as well as a mixture of these gases. These are natural components of the ambient air but in modified concentrations that need to be checked. In most food packages, the oxygen concentration is reduced while the carbon dioxide concentration is increased in order to inhibit the growth of aerobic microorganisms. That also allows you to slow down oxidation processes that change the ingredients and thus the taste and colour of the products. Other foodstuff, however, requires a certain oxygen content inside the packaging so it can stay fresh or keep its colour. But protective gases are not only used in the food industry. Electronic components are also packaged under nitrogen in order to prevent oxidation and corrosion processes.
The same applies to pharmaceutical or cosmetic products, for example, in vials or blister packages. In addition, the modified atmosphere stabilises the packaging providing the product with a mechanical protection.
ANALYSIS OF HEADSPACE VOLUME- In order to check the mixture ratio of the protective gases inside a package, a self-adhesive septum is applied to a sampling point.
The suction needle of the gas analyser is then inserted through the septum into the headspace of the package.
A simple touch on the touch-screen of the device will ensure that the required sample is automatically drawn in. Within a very short time, the oxygen and carbon dioxide content is measured, the nitrogen content calculated, and the results are shown on the display.
MODIFIED ATMOSPHERE PACKAGING
- ANALYSIS OF HEADSPACE VOLUME
- In order to check the mixture ratio of the protective gases inside a package, a self-adhesive septum is applied to a sampling point.
The suction needle of the gas analyser is then inserted through the septum into the headspace of the package.
A simple touch on the touch-screen of the device will ensure that the required sample is automatically drawn in. Within a very short time, the oxygen and carbon dioxide content is measured, the nitrogen content calculated, and the results are shown on the display. (Taking a protective gas mixture sample from a food package) In order to be successful on the market, manufacturers of sensitive or perishable products must be able to guarantee first-class quality over a long period of time. This applies, in particular, to the food industry but also the electronics, pharmaceutical or cosmetics industry.
Modified Atmosphere Packaging (MAP) plays a decisive role in this. Typical protective gases are nitrogen (N²), carbon dioxide (CO²) and oxygen (O²) as well as a mixture of these gases. These are natural components of the ambient air but in modified concentrations that need to be checked. In most food packages, the oxygen concentration is reduced while the carbon dioxide concentration is increased in order to inhibit the growth of aerobic microorganisms. That also allows you to slow down oxidation processes that change the ingredients and thus the taste and colour of the products. Other foodstuff, however, requires a certain oxygen content inside the packaging so it can stay fresh or keep its colour. But protective gases are not only used in the food industry. Electronic components are also packaged under nitrogen in order to prevent oxidation and corrosion processes.
The same applies to pharmaceutical or cosmetic products, for example, in vials or blister packages. In addition, the modified atmosphere stabilises the packaging providing the product with a mechanical protection.
N N O C O O O
NITROGEN (N²) Nitrogen is an inert gas and does not react with surrounding substances.
For manufacturing reasons, it has a high purity of up to 99.99 %, it is colourless, odourless and tasteless and diffuses only very slowly through plastic film.
That is why it is used in MAP to displace oxygen, to adjust a gas mixture or to function as a filling gas that prevents the collapse of the packaging. A 100 % nitrogen atmosphere is used for snack products to prevent oxidation and thus rancidity.
CARBON DIOXIDE (CO²)
Carbon dioxide – colourless, odourless and tasteless just like nitrogen – inhibits oxidation processes and the growth of most aerobic bacteria and moulds. It is therefore often used to increase the storage life of packaged foodstuff. Generally, the following applies: the higher the CO² content, the longer the storage life. However, some food will change its taste if the CO² content is high. In addition, the gas might be absorbed by the product or escape from the packaging making it collapse.
OXYGEN (O²)
If food comes into contact with oxygen, it will usually oxidise and go bad. Oxygen also allows for the growth of aerobic microorganisms.
This is the reason why protective gas packaging often does not contain any oxygen or only very little. Fresh produce, however, requires oxygen since it still “breathes” after the harvest.
A high O² content of 70 % in the packaging is even beneficial in case of raw red meat: It prevents the product from becoming “pale” as well as its colonisation by anaerobic microorganisms.
- Quality assurance and ever increasing consumer demands require regular control of protective atmospheres in packaging. This requires gas analysers that quickly provide reliable measurement results and can be easily integrated into any work process – such as our MAT1000 series instruments. They are used by numerous companies for quality control in the laboratory, but also in the production area in the filling or packaging of sensitive or perishable products. Our Modified Atmosphere Testers (MAT) are also suitable for spot checks as well as for permanent monitoring of the gas mixture on packaging machines. Manufacturers of sensitive or perishable products must guarantee first-class quality over long periods of time. This applies especially to the food industry, but also to the electronics, pharmaceutical or cosmetics industry.
- Typical fields of application are:
- • Sample measurements on the line during the packaging process
- • Inspection after revision: Change of foil or packaging materials
- • Change to the packaging machine: Sealing seams, welds
- • Residual samples, quality assurance in the laboratory
- • Checks on the distribution channel
Typical compositions of protective gases in the food additive industry
| Packaged product | N2 [%] | CO2 [%] | O2 [%] | Recommended MAT devices |
|---|---|---|---|---|
| MEAT AND MEAT PRODUCTS | ||||
| Fresh meat | - | 20 – 30 | 70 – 80 | MAT1500 |
| Raw ham | 40 – 100 | 60 – 0 | - | MAT1500 |
| Sausages, salami | 70 | 30 | - | MAT1500 |
| Poultry | - | 20-30 | 70-80 | MAT1500 |
| BAKERY PRODUCTS | ||||
| Cake base | 30 | 70 | - | MAT1200 |
| Toast | - | 100 | - | MAT1200 |
| Pre-baked bread rolls | 30 | 70 | - | MAT1200 |
| DAIRY PRODUCTS | ||||
| Cheese | 70 | 100 | - | MAT1100 |
| Sliced cheese | 30 | - | - | MAT1100/MAT1400 |
| Yogurt and dairy products | MAT1400 | |||
| Milk powder | 100 | - | - | MAT1400 |
| VEGETABLES | ||||
| Potatoes, peeled raw | 40 | 60 | - | MAT1200 |
| Salads, raw food | 40- | 60 | - | MAT1200 |
| Sliced cucumber | 100 | - | - | MAT1100 |
| Fresh fruits and vegetables | 90 | 5 | 5 | MAT1100 |
| READY MEALS | ||||
| Sterilized menus | 60-100 | 40-0 | - | MAT1500 |
| Fresh pasta products | 50 | 50 | - | MAT1200/MAT1500 |
| Convenient | 60-70 | 30-40 | - | MAT1200/MAT1500 |
| FISH | ||||
| Trout, fresh | 70 | 30 | - | MAT1500 |
| Fish fillet | 50 | 50 | - | MAT1500 |
| Raw fish | MAT1500 | |||
| Shellfish and molluscs | 30 | 40 | 30 | MAT1500 |
| BEVERAGES | ||||
| Coffee, tea | 100 | - | - | MAT1100/MAT1200 |
| fruit juices | 100 | - | - | MAT1400 |
| Carbonated soft drinks | - | 100 | - | MAT1100 |
| FURTHER PRODUCTS | ||||
| Dry products, pasta, spices etc. | 100 | - | - | MAT1100/MAT1400 |
| Dried fruit | 100 | - | - | MAT1100 |
| Dried nuts etc. | 100 | - | - | MAT1100/MAT1400 |
| Breadsticks | 100 | - | - | MAT1100/MAT1400 |
| Desserts | 50 | 50 | - | MAT1200 |
| Products with alcoholl | 70 | 30 | MAT1200 | |
| Pet food dry | 100 | - | - | MAT1100/MAT1200 |
| Pet food raw | - | 20-30 | 70-80 | MAT1400/MAT1500 |
Packing under protective atmosphere
- Quality assurance and ever increasing consumer demands require regular control of protective atmospheres in packaging. Packaged atmosphere (Modified Atmosphere Packaging, MAP) plays a crucial role here. Typical shielding gases are nitrogen, carbon dioxide and oxygen, as well as a mixture of these gases.
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