Purple kale overnight is best not to eat.

The ingredients that can not be eaten overnight:

1, overnight boiled water can not drink: tap water boiled for 3 to 5 minutes, the lowest content of nitrites and chlorides and other harmful substances, the most suitable for people to drink. Drink less overnight boiled water: nitrite in the body can form carcinogenic nitrosamines. Some experts have found that the nitrite content of boiled water is higher than raw water. And repeated times boiling time is too long or more than 24 hours of boiling water, nitrite content are significantly higher. Boiling water after 24 hours, the nitrite content is just boiled 1.3 times.

2, overnight eggs can not be eaten: eggs if not fully cooked, uncooked yolks eaten overnight, in the case of improper preservation, nutritious things are prone to breeding bacteria, harmful to health. But if (eggs) have been cooked, and at low temperatures (generally refrigerated temperature) sealed properly preserved, generally can be saved 48 hours no problem.

Eggs can be eaten overnight, not only to see whether the heating, but in the first boiled eggs when the eggs are cooked, only in the first boiled eggs after cooking, and then boiled overnight to eat is not a problem. This is the same thing with tea eggs.

3, overnight tea can not drink: overnight tea because of the time is too long, most of the vitamins have been lost, and tea in the proteins, sugars, etc. will become bacteria, mold reproduction nutrients, so people usually think that overnight tea can not be drunk.

4, overnight fungus can not be eaten: fungus soup is a senior nutritional supplements, but a night, the nutrients will reduce and produce harmful components. Because both indoor cultivation of silver fungus and linden field cultivation of silver fungus contains more nitrates, after cooking, such as put in a longer period of time, in the decomposition of bacteria, nitrates will be reduced to nitrite.

People drink this soup, nitrite will naturally enter the blood circulation, blood in the red blood cells have hemoglobin, can carry a lot of oxygen for the body needs. However, nitrite plays a counterproductive role, so that the body's normal hemoglobin oxidation into methemoglobin, the loss of the ability to carry oxygen, resulting in a lack of normal human hematopoietic function.

5, overnight leafy vegetables do not eat: as part of the green leafy vegetables contain more nitrates, cooked if placed too long, under the action of bacterial decomposition, nitrate will be reduced to nitrite, carcinogenic, heating can not be removed. Usually stem and leafy vegetables with the highest nitrate content, melon vegetables slightly lower, root and cauliflower class in the middle. Therefore, if you buy different kinds of vegetables at the same time, you should eat the stem and leaf first, such as cabbage, spinach, etc..

6, family marinade bad goods do not eat overnight: many people also like to eat the rest of the marinade bad goods in the refrigerator "overnight", but this practice has a great food safety risks. Prevention of food poisoning, spring and summer seasons to eat marinated bad goods do not overnight. Bulk flavor is to be eaten the same day, not overnight. From the food safety point of view, this is not hygienic, if possible, it is best not to eat overnight bad goods. Food experts remind, even in the refrigerator food, is not absolutely "insurance". The refrigerator is easy to breed mold, and cold bacteria.

7, seafood can not be overnight: should not be eaten overnight food, fish, seafood, leafy vegetables, coleslaw and so on. Fish and seafood are prone to protein degradation after overnight, will damage the liver and kidney function. Green leafy vegetables contain different amounts of nitrates, cooking excessively or put too long, not only the vegetables will be yellow, tasteless, nitrates will be reduced by bacteria into toxic nitrites, have a carcinogenic effect.

Cold vegetables due to the processing of the time on the more contaminated, even if refrigerated, overnight is also likely to have deteriorated, should be made now eat.

8, overnight soup can not be overnight: many people do not finish the soup always like to put in the refrigerator, the next day to boil and drink. Healthy eating: the best way to save the soup base do not put salt and other seasonings, cook the soup with a clean spoon out of the day to drink, drink not finished, it is best to use the wok stored in the refrigerator. Because the leftover soup for a long time in aluminum pots, stainless steel pots, easy to chemical reaction, should be held in glass or ceramic utensils.

Many overnight food is not suitable for consumption, so you should pay more attention in life, try to eat as little as possible overnight food, not only on their own body is not beneficial, but also may lead to serious harm, the loss is not worth it.