Stir-fried vegetables can not be eaten overnight.
In addition to the destruction of nutrition, overnight vegetables can also produce disease-causing nitrites. This is because the longer the storage time, the vegetables in the nitrite content will increase with. Stir-fried vegetables, meat contains a lot of oil, salt, long time after the nitrite content will also increase dramatically. Nitrites, although not directly carcinogenic, but there is a certain health risk to the body.
The humid, mixed environment of a variety of foods in which overnight food is found can easily harbor bacteria. Especially in the hot summer, the speed of bacterial reproduction accelerated, overnight dishes are easily contaminated by bacteria, people eat again easy to cause gastrointestinal diseases, and even food poisoning.
Expanded:
1, low-temperature preservation
Placed in a 4-degree refrigerator (refrigerated), can inhibit the growth and reproduction of microorganisms, inhibit the activity of nitrate reductase, reduce the production of nitrite. There is a lot of literature on how the preservation time and preservation conditions of vegetables affect the content of nitrite, the conclusion is that refrigeration can greatly reduce the production of nitrite.
2, do not flip
Eat not finished vegetables to be set aside in advance, and then placed in the refrigerator to save, rather than flip a long time after the preservation. The more you turn the vegetables the greater the chance of microbial infection. This will control the amount of nitrite production well and ensure the safety of leftover vegetables.
Experiments have shown that if spinach is cooked without turning, put into a 4-degree refrigerator, spinach and other leafy greens 24 hours after the nitrite content of about 3mg/kg to 7mg/kg. human body to eat 0.2g of nitrite may be poisoned, so this is still a very low amount, do not have to worry about too much.
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