Is food desiccant useful

Do some food desiccants have a moisture absorbing effect when their outer packaging looks like plastic and has an air tight feeling?

Firstly, food desiccants are useful, and if they are not used, there will be no such product. As for the feeling of not using it, it is because its moisture absorption process is static and difficult to distinguish with the naked eye. As for whether the outer packaging you mentioned can absorb moisture through it, there is no doubt that these outer packaging are breathable, and upon closer inspection, there will be some small holes.

If you still don't understand, you can take a small test and pack the Wangwang Snow Cake separately. One with desiccant and the other without desiccant. Just try its taste in a few days and you'll know. The taste of the one with desiccant is definitely more crispy than that without desiccant.

The main raw material of food desiccants is silica gel, with a moisture absorption rate of about 30%. That is to say, a 10G silica gel desiccant can absorb about 3G of water. It is capable of absorbing moisture, and there is no doubt about this, as it has been scientifically verified.

Of course, desiccants require sealed packaging. If they are not sealed, they will come into contact with external air and continuously absorb moisture from the air. Once the moisture absorption is saturated, there will be no moisture absorption effect. Therefore, when using desiccants, it is necessary to ensure that the food packaging is in a sealed state in order to achieve the goal of moisture-proof.