To use the refrigerator well you must know three "cold" knowledge

Many people buy things back, put them in the refrigerator and everything is fine. But the refrigerator is not a safe, and not all food is suitable for storage in the refrigerator. How to store food in the refrigerator better, keeping it fresh and at the same time ensuring health and safety? These "cold" knowledge, might as well understand.

Three elements for preservation of green leafy vegetables

How to store green leafy vegetables in the refrigerator for longer? Pay attention to temperature, humidity and air.

Low temperature and sealed (low oxygen) environment can slow down the respiration of green leafy vegetables, and also reduce the activity of microorganisms on its surface and inside. But if you want to store it in the refrigerator, you can't spray water on the vegetable leaves, which will accelerate the decay of the vegetable and it will easily breed bacteria.

After buying green leafy vegetables home, it is recommended to cut off the rotten and damaged parts. You can wash it or not, but in any case, be sure to drain the surface water and put it in a food bag to refrigerate. Squeezing out more air can also extend the storage time.

Tropical fruits should not be put in the refrigerator

The growth and development of tropical fruits are carried out in a high temperature and high humidity climate, so they are very sensitive to low temperatures.

In the process of storage and fresh-keeping, tropical fruits will suffer from cold damage due to low storage temperature (fruits exhibit physiological metabolic inadaptability at low temperatures above 0°C), which will seriously affect their quality. Therefore, after bananas, mangoes, etc. are taken out of the refrigerator, brown or black spots will appear on their skins soon.

Tropical fruits are best bought and eaten immediately, and avoid storing them for a long time or putting them in the refrigerator.

These foods are recommended to be stored at room temperature

Potatoes, cucumbers, carrots and other tuberous vegetables can be stored at room temperature. Tomatoes are not suitable to be put in the refrigerator. After the tomatoes are frozen at a low temperature, the meat will become blistered. Not only will the umami taste disappear, it is not easy to cook, and in serious cases, it will even become rancid.

Putting starchy foods such as steamed buns, rolls, breads in the refrigerator will speed up the drying and hardening speed and affect the taste. If you can't eat it for a short time, you can seal it and put it in the freezer to freeze.

Put the medicinal materials in the refrigerator and mix them with other foods for a long time. Not only will various bacteria easily invade the medicinal materials, but also the medicinal materials will easily get damp and destroy the medicinal properties.

Foods with high sugar content, such as honey, preserved fruits, chocolate, etc., have high osmotic pressure and low moisture content and should not deteriorate. They can be stored at room temperature. However, the low temperature will cause the food to crystallize and precipitate sugar after being placed in the refrigerator. Although this change does not affect food safety, it affects the color and taste of the food. When chocolate is stored in the refrigerator, a layer of hoar frost will form on the surface, which will affect the taste and is easy to mold and deteriorate.

If tea and milk powder are put into the refrigerator, if they are not tightly sealed, the odor and moisture in the refrigerator will invade the food, which will affect the taste and easily become moldy.