How to seal canned fruit:

1, buy glass jars, must have a lid.

2, after filling, put it into the steamer for 5 minutes

3, under the pressure, the lid will shrink inward, and the canning is sealed.

Note: The water and sugar content in canned fruits is very high, after opening the lid, it is easy to cause a large number of microorganisms to multiply, causing the product rancidity and loss of food value. It is recommended that after opening the lid, try to consume it all at once.

Extended information:

To know how canned food achieves the effect of long-term storage of food, we first need to know what causes food spoilage. Microorganisms breed and multiply in the food, and they continue to break down the nutrients inside the food, causing the composition of the food to change and the food to spoil.

Sterilization

Both food and canned goods need to be sterilized, so that the bacteria and their spores are eliminated so that no bacteria can grow. However, it is unlikely that all bacteria will be eliminated, but what can be done is basic sterilization so that the food can be kept for as long as possible.

Sealing

There are also a lot of bacteria and bacterial spores in the dust in the air, and the bacterial spores are like the seeds of a tree, which are very hardy and resistant, and can float in the wind. That's why canned goods are vacuum sealed.

Preservatives

The canned goods have preservatives, because the bacteria to the appropriate environment will rapidly multiply, even if there is only one bacterium, due to the division of the reproduction, so it will soon be able to become countless. And preservatives can effectively inhibit the survival of bacteria, so that the original few bacteria can not survive, food preservation time is long.

Baidu Encyclopedia - Canned Fruit