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Home Uncategorized In order to prevent food from spoilage, a small bag of substance used to absorb water and oxygen is often put in the food packaging box. Is this substance?

In order to prevent food from spoilage, a small bag of substance used to absorb water and oxygen is often put in the food packaging box. Is this substance?

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Online, etc.
A. quicklime B. limestone C. sodium bicarbonate D. iron powder

useful NaOH and iron powder

Where can NaOH be used for food antisepsis or drying? It can’t keep people alive. Calcium chloride can’t react with oxygen. It’s iron powder

it is generally water absorbing silica gel and calcium chloride. Without water, bacteria and other organisms will not reproduce and food will not deteriorate

the problem of isolating oxygen is usually solved by filling nitrogen. Oxygen absorbing substances are not used to absorb oxygen, because the amount of oxygen is too large to absorb it.

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that’s a preservative, commonly known as dry ice
1. The commonly used preservatives are sodium benzoate, nitrate, nitrite and sulfur dioxide (SO2), which are all used for food preservation
2. Sodium phenoxypotassium is usually used as a preservative in beverages
3. Formalin is used in the preservation of fish.

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