Application of the hottest free oxygen absorbent i

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Application of free oxygen absorbent in food packaging

deoxidizer is also known as free oxygen absorbent, free oxygen remover or deoxidizer. It is a substance that can absorb oxygen. When it is put into food sealed packaging, it can remove the oxidizing substance in the packaging, remove the free oxygen and dissolved oxygen in the packaging container, and prevent the food from mildew and deterioration due to oxidation

deoxidizer used in food packaging can not only effectively inhibit the quality deterioration of the contents, but also maintain the original color, aroma and taste of food, prevent pests, inhibit the growth of bacteria, maintain nutrients, and extend the fresh-keeping time. Therefore, using deoxidizer to preserve food is a good, effective, convenient and safe packaging and preservation method

deoxidizers have been developed in various countries since 1925. The most commonly used deoxidizers are iron series deoxidizers and sulfite deoxidizers. Deoxidizer composed of iron powder; Deoxidizer composed of copper powder and ammonium chloride; Deoxidizer composed of activated carbon, zinc, aluminum and iron; Deoxidizer composed of glucose and glucose oxidase; Deoxidizers based on dithionite are available in the province. For example, the iron-based Compound Deoxidizer preservation technology of dry food developed by the British Institute of Cryogenics; Deoxidizer made of zinc, aluminum, iron and other metals and activated carbon developed by a German company; Deoxidizer invented by an American company with dithionite as the main agent

The deoxidization of

deoxidizer is based on chemical reaction, so its deoxidization ability varies with the reaction order, time, temperature and other conditions. When an appropriate amount of quick acting deoxidizer is present in the sealed packaging container, the free oxygen can be reduced to less than 1% within about 1 hour, and finally to 0.2%. The slow effect deoxidizer takes 12-24 hours, but the final deoxidization capacity is the same, and the free oxygen can be reduced to less than 0.2% at the same time. As a new material for food preservation, Deoxidizer has its unique advantages in terms of the machining technology of electronic tensile testing machine

the deoxidizer is packed in the same container with the food. The deoxidizer absorbs the oxygen in the container, making the container anaerobic, and the food can be preserved. However, the raw material of deoxidizer must have stable reaction, no strange smell, no harmful gas generation and other side effects. In case of accidental ingestion, it is also harmless to human body. Deoxidizers generally use iron powder as the basic raw material, which can quickly determine the required range. When used in general food, they can maintain food quality and prolong shelf life. When used in healthy food, they can prevent oil oxidation, prevent discoloration and maintain nutrients. Deoxidizers have been widely used in wet bread flour, wet noodles, wet vermicelli, Wet snacks, semi dried fish products and other foods abroad

at present, in addition to bags, deoxidizers are also packaged in caps. Bags are used for bagged food, while caps are used for bottles, cans and other containers. In recent years, with the development of food industry and the improvement of packaging materials, deoxidizers have become more and more popular in China. The fatigue function of combined testing machines such as torsion tension fatigue can be verified with reference to jjg1136 (2) 017, which is more and more widely used

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