The theme of the first episode of "A Bite of China", which has been popular all over the country, is "Nature's Gift". We can clearly feel what the Chinese nation has on the word "fresh" when it comes to food. Perseverance.

Therefore, when quick-frozen food appeared, it was labeled as "stale" and "no time to cook" for a long time, and many mothers felt that it was not healthy at all. All quick-frozen food used dead pork and dead fish. Shrimp, after listening to it too much, you start to murmur in your heart, "Frozen food, can you rest assured to eat it?"

Many people think that quick-frozen food is nutrient-poor, and if it is frozen for too long, nutrients are lost. Actually, this is a complete misunderstanding.

Quick-frozen food is not just as simple as freezing the food. The reason why it is called "quick-freezing" is that the freezing speed is very fast!

Compared with the freezing process of general refrigerators, quick freezing can quickly reduce the temperature of food to far below the freezing point of water (usually below minus 18 ℃).

If the dumplings made by yourself are put in the refrigerator to freeze, because the temperature drops relatively slowly, the water in the food will form "ice crystals". As the temperature decreases, such "ice crystals" will become larger and larger and easily destroyed The cellular structure of food, which leads to loss of nutrients, can also make the taste worse.

However, due to the rapid cooling speed of quick-frozen food, the water in the food will enter a "supercooled" state, and the "ice crystals" formed at this time are very small, so small that they will not seriously damage the food cells, and can retain the nutrients of the food to the greatest extent. and taste.

The process of quick freezing is so fast that the food has no time to respond, and the freezing operation has been completed, so there is almost no loss of nutrients. In some cases, the nutrient retention rate in frozen fruits and vegetables may be higher than in fresh shipments.

Moreover, due to the low temperature state, cell activity has basically stopped, and the activity of microorganisms has also been greatly restricted, allowing quick-frozen food to be stored for a long time. Therefore, the nutrition of frozen food is not bad, you can eat it with confidence!