Aluminum foil is also widely used in the packaging of pet food. Pet food has some special requirements in packaging, which can be re-sealed after the package is opened, and should have the characteristics of heatable, freshness, corrosion resistance and moisture resistance. Aluminum foil has become the preferred packaging material for pet food in meeting these requirements.
Aluminum foil is also widely used in food preservation. The importance of food preservation for our health is indisputable, the consumption of non-fresh food may cause acute gastroenteritis, acute hepatitis, dysentery, cholera and even tumors (such as aflatoxin-induced liver cancer) and other diseases.
In addition, prolonging the freshness period of food can also avoid food waste, especially in some special times when you need to stock up on food, the importance of food preservation is further emphasized. Spoilage of fresh food comes from its own respiration (plant-based ingredients), as well as the decomposition of food by foreign bacteria (meat foods both). Therefore, the most important step in the method of food storage is to control the occurrence of the above reactions. This is something that high school chemistry teaches us.
For every ten degree rise in temperature, the rate of chemical reaction increases by a factor of 2-4. And we also know that the optimal temperature for many bacteria to reproduce is close to human body temperature, which is around 37 degrees Celsius. If the temperature is too high, the bacteria will die, and if the temperature is too low, the bacteria will slow down their reproduction. Therefore, a common measure for food storage is to maintain as low a temperature as possible to minimize the respiration of fruits and vegetables and the reproduction and decomposition of bacteria.