Aluminum Packaging and Food Safety Revealed

 
BERLIN - July 18, 2024 - PRLog -- Can aluminum packaging be used to pack food? Is it safe for the human body? Many people have such questions, and many people think it is unsafe.

Why do people have such doubts? Why don't people think that iron is harmful to the human body? Because aluminum is a non-essential trace element for the human body, excessive intake of it can cause great harm to the human heart, liver, skin, and nervous system.

In traditional concepts, plastic, glass, and iron packaging are the most common materials for packing food. People naturally think that aluminum is harmful to the body, especially after packaging food, this trace element will penetrate the food, and then we eat it into the body, causing irreversible damage.

Some people think that aluminum and citric acid are very poor pairs. Aluminum is complexed by citric acid. Citric acid "loves" aluminum, and when aluminum is exposed to citric acid, citric acid invades the aluminum's metal structure.

These links are all spurious, just like the whole cell phone-cancer link in the 1990s. Correlation does not equal causation, and aluminum does not cause Alzheimer's. It is a dementia, and genetic factors largely determine your susceptibility to it.
However experimental results show that citric acid inhibits aluminum corrosion in sodium chloride solutions, and the inhibition efficiency depends on its concentration. "So citric acid itself does not prevent corrosion, but it prevents corrosion from sodium chloride. The fact that citric acid invades the aluminum surface shows a strong affinity for aluminum, which is closely related to its ability to bring aluminum into solution.

Aluminum is toxic if it gets into the brain. However, aluminum in packaging isn't going to get into the brain.

First, aluminum metal in packaging would have to corrode, converting Al(0) to Al(III), before it could leach into food. This is possible but packaging is designed to prevent this. Even then, Al(III) is poorly absorbed by the intestines (only 0.3% makes it to the blood.) Of the Al(III) that gets absorbed, most are excreted by the kidneys and only a minuscule amount can cross the blood-brain barrier.
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