Packing food, the health knowledge you must know

When family and friends gather for a meal, there is inevitably a lot of food, and most people choose to pack up the leftovers to take home. But how can we better preserve its nutritional value after packaging? You may not be very clear about it, so let me tell you some knowledge about food packaging.

1. Don’t pack vegetarian dishes

Some overnight vegetables, especially overnight green leafy vegetables, not only have their nutritional value destroyed, but also produce pathogenic nitrites. Although the amount produced each time is far from enough to cause food safety accidents. The "no leftover vegetables" mentioned here are mainly considered from the perspective of loss of nutritional value and decline in taste.

2. Put the packaged food in the refrigerator after it has cooled down completely

This is because when hot food suddenly enters a low-temperature environment, the center of the food is prone to quality changes. The heat brought in by the food will cause condensation of water vapor and promote the growth of mold, thus causing the entire food in the refrigerator to mold.

3. Packaged food must be heated

Because the temperature of the refrigerator can only inhibit the reproduction of bacteria, but cannot kill them completely. If you don't heat it before eating, it will cause discomfort, such as dysentery or diarrhea.

4. Don’t keep packaged food for a long time

It is best to store leftovers and eat them within 5-6 hours. Because under normal circumstances, certain bacteria, viruses and parasites can be killed within a few minutes by heating at 100 degrees Celsius. However, if food is stored for too long, the bacteria in the food will release chemical toxins that cannot be eliminated by heating. Also, be careful not to reheat leftovers too many times, as repeated freezing will cause the food structure and nutrients to be lost.