Many people think that food will be "safe" when putting it in the refrigerator, and will not change taste or deteriorate. In fact, the refrigerator only uses cooling to inhibit the reproduction rate of bacteria, but the food will also deteriorate if stored for too long. Eating it may cause symptoms of "refrigerator food poisoning" such as nausea, vomiting, diarrhea. Let’s take a look with the editor below.

Store overnight dishes, and the increase in nitrites has always been a saying in the nutrition community that overnight dishes, especially overnight vegetables, cannot be eaten because overnight dishes have a high nitrite content, and heating can only eliminate microorganisms and bacteria, while nitrite cannot be removed by heating.

An experiment once found that among the dishes 24 hours after being served, the nitrite content in four dishes increased significantly, and all exceeded the limit standards of the "Limited Standard for Contaminants in Food", among which fried vegetables exceeded the standard by 34%, fried leeks exceeded the standard by 41%, braised pork exceeded the standard by 84%, and braised crucian carp exceeded the standard by 141%. The nitrite content of meat dishes exceeds the standard is because the braised dishes contain nitrates themselves, and the meat dishes have high protein content. After 24 hours, the microorganisms decompose a large number of protein compounds, which promotes the conversion of nitrates into nitrites. The reason why vegetables contain nitrite is because nitrogen fertilizer is applied during the growth process of vegetables, and nitrate comes from nitrogen fertilizer.

In short, whether it is leftover vegetables or meat, do not store them in the refrigerator for a long time, because 0.2 to 0.5 grams of nitrite can cause poisoning if consumed by adults. If consumed for a long time, it can also cause esophageal cancer, gastric cancer, liver cancer and colorectal cancer. The four types of food should not be placed in the refrigerator. Root vegetables, such as potatoes, carrots, pumpkins, winter melons, onions, etc. with thick cortex can be stored at room temperature. In addition, cucumbers and green peppers can easily become black and soft when kept in the refrigerator for a long time.

(2) Tropical fruits

Tropical and subtropical fruits such as bananas and mangos have poor adaptability to low temperatures. If they are kept in the refrigerator, they will frostbite the fruit and affect the taste.

(3) Pastry

Standards such as steamed buns, rolls, bread, etc. will dry and harden quickly. If it is necessary to store, it must be packed with plastic wrap or fresh bags before putting it in the freezer.

(4) Marinated meat

bacon, ham and other meat pickled products are suitable for being placed in a cool and ventilated place, which is conducive to ensuring the flavor of the food. If you put them in the refrigerator, it is easy to have a sensation due to the humidity, which will shorten the storage time.

It is worth reminding that after fast frozen foods (such as meat, fish, etc.) are thawed, bacteria will reproduce rapidly in large quantities, and this thawed food is not suitable to be put back in the refrigerator again. Therefore, before putting the meat into the freezer, it is best to divide it into appropriate amounts of packages and thaw it at a time.

Most people buy refrigerators home and usually only use them to refrigerate and preserve food. However, they do not know that refrigerators actually have many wonderful uses, and these new uses can bring more convenience to life.

1. Extend the lifespan of stockings

Many girls often have troubles with stockings. Don’t unseal the newly bought stockings, and put them directly in the refrigerator and freezer for 1 to 2 days. Then take it out for about half a day and put it on. The temperature changes can increase the toughness of the stockings, and iced stockings are less likely to be damaged.

2. It can be restored when it is damp, and it will not taste crispy, but it has not exceeded the shelf life. It is a pity that you can put the cookies in the refrigerator for about 24 hours. Take out the cookies and the taste will return to its original crispness.

3. Flat silk clothes are wrinkled after washing. Clothes with too soft texture are very troublesome to get hot. You can put the clothes in a plastic bag and put them in the refrigerator for a few minutes. It will be much easier to take them out and iron them.

4. Cut the egg yolk without breaking

The freshly cooked white-boiled egg or tea egg will be broken with a knife. You can put it in the refrigerator and store for 1 hour first. After the egg yolk is slightly cold and solid, cut it. The cut of the egg is flat and the yolk will not break.

5. Beans are almost cooked

If red beans are not soaked, it is difficult to cook thoroughly. You can first boil the red beans with water, wait until they cool down and put them in the refrigerator for about 2 hours. After taking them out, there will be some icy surface on the water. At this time, heat the pot again. The water and the red beans are heated differently. The temperature changes, so that the red beans will be cooked until about 20 minutes.