After excessive accumulation of aluminum in human body, it will damage human brain cells and cause memory loss. This poisoning process is not easy to detect and takes a long time. The melting point of aluminum is 660 degrees Celsius, so the risk of precipitation during barbecue is relatively small.
Aluminum foil can not only transfer heat, but also prevent meat from directly contacting the flame, which is equivalent to putting on a layer of "fire-proof clothing" to reduce the chance of being burned.
In addition, wrapping food with aluminum foil can prevent water loss, especially meat, which tastes fresh and tender after cooking, and can also prevent baked food from sticking to the baking tray.
Extended data:
A kind of film-like metal paper coated or pasted with silver, mostly silvery white, and the metal component is actually aluminum, not tin.
Aluminum foil paper, also called tin foil in Hong Kong, is a thin sheet with a thickness of less than 0.2 mm. Most aluminum foil paper has a shiny side and a dull side. Mainly used for packaging food, medicine, cosmetics and other chemical products.
Aluminum foil paper is usually used to hold food (such as aluminum foil paper plates). It can be used to wrap bean sprouts, potatoes, sweet potatoes and so on. In order to barbecue and prevent them from burning. Sometimes it is used for decoration.
References:
Tin foil-Baidu encyclopedia