There are several skills to master when eating leftovers. One is to store leftovers in a cool place in autumn and winter, and then heat them when eating.
The temperature in autumn and winter is relatively low, so it is easy to preserve leftovers. As long as you put it in a cool place and eat it two or three times in a row, you can eat it safely. Of course, in the process of use, you must smell the smell with your nose to see if there is any change. You can't eat it if it smells.
Tip 2: Keep the leftovers in cold storage in spring and summer, and don't eat them more than three times.
Put the leftovers in the refrigerator, and it is best to eat them within three times. If you leave them for too long, it will have an impact on your health.
Tip 3: the leftovers should be stored in a sealed way to prevent the invasion of germs.
Sealed storage of leftovers is a very effective method, which eliminates the invasion of germs and closes the source of infection. Eating leftovers has little effect on the body and is not easy to get sick.
Tip 4: The leftovers are salty to prevent deterioration.
Leftovers with heavy salty taste are easier to preserve and last longer. If you eat it for several days, there will be no problems and it will not go bad and moldy.
Several skills to master when eating leftovers 1. Cover the leftovers with gauze and keep them in the shade.
We eat leftover rice or steamed bread, let it cool, put it in the shade, cover it with gauze and store it for a week. It's convenient to take it when you eat it, and you won't get sick when you eat leftovers.
Tip 2: put the leftovers and other staple foods in the refrigerator.
When the weather is hot, rice or steamed bread should be refrigerated in the refrigerator. The purpose of this is to prevent steamed bread or rice from deterioration, discoloration and taste change. Frozen staple food can be eaten after heating, which has no effect on the body and is not easy to get sick.
The topic of leftovers is often the real life problem that everyone is most concerned about. It is said in Jianghu that leftover food may cause cancer, and some people even say that leftover food is poisonous and inedible. In fact, leftovers are not as terrible as you think. Of course, it is not recommended that you always go to leftovers in your daily life. Even if you have leftovers, after reliable preservation and scientific heating, it will not cause any problems to your health, nor will it cause you to get sick and be hospitalized. Specifically, I'm going to talk to you today about tips for dealing with leftovers.
Can eating leftovers often really cause cancer and get sick? Searching for relevant comments on the Internet will find too much negative information about leftovers, saying that the root cause of leftovers being inedible, toxic and carcinogenic is actually "nitrite".
Indeed, the longer the leftovers are stored, the more nitrite they contain. Nitrite itself does not cause cancer, but under certain conditions, it will combine with hemoglobin in the body to generate nitrosamines, which is carcinogenic to human body, and it is easy to increase the incidence of nasopharyngeal carcinoma, esophageal cancer and liver cancer in real life.
However, please note that any so-called carcinogen, carcinogenic effect and harm can only be achieved at a toxic dose, but the leftovers will not contain too much nitrite after being stored for one or two days. Do you think it is possible to get sick unless you eat more than dozens of pounds of leftovers at a time?
Therefore, first of all, it must be clear that leftovers will not cause too much harm to the body, provided that leftovers are treated scientifically and reliably.
For leftovers, how to make (preservation+cooking) healthier? Vegetarian food, such as vegetables, is more likely to lose nutrients, whether it is vitamin C or water, vegetables, especially green leafy vegetables, are more likely to breed nitrite during storage. Although it is not much, we should avoid threats.
Therefore, please try your best to leave no meat or leftovers in your life.
As far as cold dishes are concerned, it is easy to produce harmful substances such as bacteria if they are generally not heated, and a large amount of intake is easy to increase the risk of food poisoning symptoms such as abdominal pain and diarrhea.
Now that I have stayed, the next thing to do is to do a good job of preservation and nursing. Storing leftovers at room temperature will easily lead to the rapid proliferation of bacteria and other microorganisms in leftovers, and at the same time will accelerate corruption and deterioration.
In order to avoid this problem, please put the leftovers in a suitable closed container with a lid and store small portions in the refrigerator.
In order to avoid odor and cross-contamination, please use fresh-keeping boxes for classified packaging and storage.
Although the leftover food can be eaten, it should be heated completely and thoroughly. Please heat the leftover food to 100℃ and keep it boiling for more than 3 minutes. Only by thorough heating can the safety be better guaranteed.
Of course, please pay attention to the leftovers. I suggest you eat it all at once. Repeated heating is not recommended. Eat as much as you like to avoid cross-infection of microorganisms.
Leftovers are always a hot topic. Speaking of roots, it's best not to leave anything behind. Do it now and eat it now, avoiding waste and excess, and avoiding the threat of microorganisms. But if it is left, it is not afraid. Follow the principle of healthy leftovers, handle them reliably and preserve them scientifically. Your safety can be decided by yourself.
Can people who often eat leftovers get sick? I don't think so!
I have eaten leftovers since I was a child. At that time, the leftovers, especially rice soup, were sour after a day or two, so we mixed a little pimple in our hearts and put some sesame oil in them, and we drank them happily.
At that time, there was no refrigerator, and there was a lot of steamed dry food. When it is put outside, it often grows hair. After school, we took this kind of steamed bread, put some salt and sesame oil, then stirred it with water, took it and went to work in the fields.
This kind of leftovers, from snacks to big ones, have never seen anyone poisoned and sick.
People now live a good life and don't even eat leftovers. But the old couple still keep their old habits. Eat all the leftovers of the children in the second meal. Now I'm over 60 years old, and I don't feel uncomfortable, but I'm fine.
Young people nowadays turn pale when they talk about eating leftovers. I think it will cause cancer and get sick or something. In fact, in the countryside before, who didn't eat leftovers every day? However, at that time, there were very few cancer patients and not many people were sick. How do you explain this?
It's not that scary. Although we don't recommend that people often eat leftovers, there is no need to be scared like tigers. It is widely rumored on the Internet that leftovers will produce carcinogenic nitrite, which is actually true, but it has been misinterpreted. Leftovers do produce nitrite during the placing process, but its content is not carcinogenic at all. Even if you eat leftovers at every meal, it will not be harmful to your health.
In fact, leftovers will be harmful to human health only if they are not properly preserved, because improper preservation is easy to breed bacteria. These leftovers are simply nutrient-rich media for bacteria. In just a few hours, these bacteria will produce enough "toxic" metabolites to threaten human health. When we eat these meals, we will have symptoms of "food poisoning".
Therefore, if you want to eat leftovers safely, you should pay attention to the preservation method. If possible, it is best to put it in a clean lunch box, seal it and put it in the fresh-keeping layer of the refrigerator for low temperature preservation. Or use plastic wrap to seal the leftovers and put them in the refrigerator;
But there are still a few places to pay attention to. First of all, it is good to eat leftovers, because the longer the leftovers, the more serious the nutrient loss, and such food will be eaten for nothing; Second, leftovers must be fully heated, and half temperature and half cooling are more likely to cause disease; Third, it is best not to leave cold dishes, do less, and throw them away when they are left.
Speaking of leftovers, I believe most of you know. After all, when we eat, we can't guarantee to finish all the meals, so there are some dishes left. At the same time, everyone must have different views on the treatment of leftovers, because according to scientific research,
No matter what leftovers are, as long as they are processed once, both the nutritional value and the original taste will change greatly, so now many young people are willing to eat these leftovers for their own health.
The post-80s and post-70s people have different views, because in their eyes, as long as these leftovers are not stale, so many of them are edible leftovers. After all, these post-80s and post-70s are born with difficulties, and only they know the preciousness of food.
So some families have had a big argument with the elderly about whether the leftovers can be eaten, so can these leftovers be eaten? In fact, in my personal opinion, some of these leftovers can be eaten and some can't be eaten, because some leftovers are processed.
So as long as you can't eat it all at once, you will produce a special substance in the meat dishes, and as long as you produce this special substance, it will affect your health to a certain extent, so when you eat these leftovers, you'd better smell them first.
If it doesn't taste, you can cook it at high temperature, but those leftovers that smell good must not be eaten, because these leftovers have begun to deteriorate, and no matter how you process them, you can't remedy them.
Because of work, I am a person who may often eat leftovers, but I feel quite healthy. There is nothing wrong with leftovers. As long as you are willing to take good care of them, they will not pose a threat to your health. Many friends think that eating leftovers will pose a threat to people's health, and there are many unwarranted messages that "leftovers contain nitrite" may cause cancer, and eating leftovers for a long time will affect your health, but is this really the case? Actually, it's not. Nitrite is indeed produced in leftovers, but their content is completely acceptable to the human body, and the theory of carcinogenicity is exaggerated.
Nitrite is indeed a 2A carcinogen. They are also a food additive. It can prolong the shelf life of meat and make it tender. It is often used to process meat products, but as long as its dosage is strictly limited, it will not pose a threat to human body. It is a safe food additive approved by FDA. A small amount of nitrite can also synthesize nitric oxide in the blood, which helps to dilate blood vessels and lower blood pressure.
So what is the nitrite content in the leftovers? Compared with fresh food, the nitrite content of leftovers has indeed increased greatly, but it has only increased and has not exceeded the standard. It is found that even the green leafy vegetable food which is most prone to produce nitrite is exposed to air for more than 10 hour at room temperature, and the nitrite content produced by them is 100 times lower than the safe intake, which is completely acceptable to the human body. In fact, nitrite may come into contact with many foods in nature. For example, vegetables themselves may contain nitrates. Due to nitrates in agricultural and irrigation fertilizers, these nitrates are reduced to nitrite. So, in fact, we don't need to worry too much, because we consume a very small amount of nitrite.
What should be more worrying is that the microbial content in improperly preserved meals has greatly increased. If these microorganisms contain harmful bacteria, they will pose a threat to the human body. If you find that the food tastes bad, smells bad and goes bad, you'd better discard it. Microbes, bacteria and other ingredients contained in food can also reduce nitrate to nitrite, which greatly increases the nitrite content in leftovers. Refrigeration temperature below 4℃ can greatly reduce the activity of bacteria and reduce the formation of nitrite. Therefore, in order to avoid the generation of harmful bacteria, we'd better keep the leftovers in cold storage, especially in hot and humid summer, where bacteria are more likely to breed. Of course, eating leftovers still has a disadvantage, because the nutritional value of leftovers is discounted. The most serious loss of nutrients is estimated to be green leafy vegetables, which can lose 80% of nutrients after 10 hour, so it is not recommended to eat leftovers for a long time. Ensuring nutrition is the best choice.
Leftovers are an unavoidable topic in home life, because many families can't cook normally. Many times, there will be some leftovers. Based on the principle of thrift, many leftovers will continue to be eaten.
I think leftovers should be treated differently, and some leftovers should not be eaten! And some leftovers can be eaten, which may have no effect on the body. There are several common leftovers:
How to correctly preserve leftovers and eat them correctly Conclusion: If the leftovers at home go bad, it is best not to eat them. Because sometimes frugality may be the biggest waste, there are elderly people around me who are hospitalized for nitrite poisoning because of eating leftovers. Think about the value of leftovers and medical expenses, as well as the losses suffered by the body. Is it "not worth the loss"? Eating leftovers for a long time is definitely bad for your health. It depends on the preservation conditions of leftovers and the way of reheating! People who cook lettuce and clean up dishes and chopsticks in the family can't help throwing them away, especially the elderly, but children don't like leftovers. So what should we do about this situation?
First of all, the leftovers should be classified. It can be divided into vegetables, fish and bean products. Among them, vegetables will produce harmful substances overnight, because vegetables contain more nitrite, which will gradually change into toxic nitrite during storage, but in fact, if they are only refrigerated in the refrigerator for one night, they will not reach the dose of food poisoning. However, we still suggest using up vegetables as much as possible, especially some green vegetables. After all, even if they are kept for the second meal, the taste is very poor, not to mention there are still great security risks.
Second, the risk of soy products is high. Especially when the temperature is high, such as summer, bean products are prone to corruption. I have dealt with some cases of food poisoning caused by bean products before. The same problem is that it will lead to the breeding of dangerous pathogens, such as Clostridium botulinum. If it is not fully heated, the risk is very high.
What needs to be clear is that if any kind of food is kept at room temperature for a long time or in the refrigerator for a long time, the risks are actually increasing, which does not mean that refrigeration is foolproof.
Third, what about leftovers? If you find that this dish is obviously overcooked after cooking, take it out immediately, put it on another clean plate, and try to put it directly in the refrigerator. In fact, the current refrigerator can't bear it, and such a temperature won't cause much harm. In contrast, it is very worthwhile to ensure our food safety. Then, for the food on the table, try to finish it as soon as possible, especially the vegetables. It is very not recommended to eat it after the second meal. If it is some meat, especially braised pork, it is actually no problem to save it for the second meal. The second meal should be heated as much as possible, which can be heated in a microwave oven or cooked completely.
Although we all want to eat fresh vegetables, leftovers are inevitable. As long as it is properly protected, the problem of adequate heating is not serious, nor is it as serious as getting sick. Unless it's spoiled food, or it's not fully cooked or cooked.
After careful calculation, I often bring rice at noon, don't I also eat leftovers? I want to tell you here that as long as the methods are proper, there is no such thing as killing a boat person with a stick.
Below I will share some tips with you:
There are no leaves left in the leftovers: Reasons: ① The loss of vitamins is serious and the taste is not good.
② The content of nitrite is high, and the probability of cancer is high.
Leftovers are not left with cold salad: Reason: ① It is not easy to preserve without high temperature heating.
2 Cold salad is more likely to breed bacteria if it is prevented for a long time.
Leftovers become higher: ① Don't just eat leftovers, white steamed bread, etc. Put on gorgeous fried rice with vegetables and eggs (add all kinds of fresh vegetables and high-quality protein meat to the rice).
② Steamed bread can be fried with egg liquid.
Author: Jia Xiu
National second-class public dietitian
Registered nutrition technician
Thank you for your invitation.
Eating leftovers often does not necessarily make you sick, but it is easy to be sub-healthy. After all, the nutrient loss of leftovers is inevitable. Often, leftovers may lack rich nutrition intake, thus causing symptoms of nutritional deficiency, which will gradually threaten your health because of insufficient demand. For example, green leafy vegetables, as we all know, are rich in nutrients, especially antioxidant elements and water-soluble vitamins, but the loss rate of nutrients of green leafy vegetables can be as high as 20 hours.
Do you have to throw away the leftovers?
Some friends think that eating leftovers often will cause cancer and poisoning, so they never resolutely eat leftovers. The reason is that the content of nitrite produced by leftovers is high, and nitrite is a carcinogen, which is bound to cause cancer after long-term consumption. This statement is actually untenable, and there have been articles denying that leftovers are carcinogenic. Leftovers do produce a lot of nitrite, but as far as the safe intake range of our human body is concerned, nitrite in leftovers does not pose a threat to health, so this is not the focus of attention. Take vegetable food as an example. Because vegetables contain more nitrate components, these nitrates will generate more nitrite after reduction. Compared with meat, rice, melons and fruits, they are most likely to produce nitrite. However, even if it is left at room temperature for more than 20 hours, the nitrite in vegetables is still dozens or even hundreds of times the safe intake range.
On the one hand, nitrite is also misunderstood. In fact, it is a recognized food additive ingredient, whose main function is to keep fresh and ensure quality. It can be called a preservative. Its existence can make more foods maintain quality for a longer period of time and help the food industry solve many problems. As long as the addition amount is qualified, there is no obvious threat to human body. A small amount of nitrite intake can produce nitric oxide, which is the component of dilating blood vessels. Excessive intake of nitrite will pose a threat to human body, and it is not a direct carcinogen, belonging to Class 2A carcinogen, which means it may cause cancer. Compared with nitrite, we should pay more attention to the generation of harmful microorganisms in leftovers. If they are left for a long time, harmful microorganisms will multiply in large numbers. If there are too many harmful bacteria, it is indeed a health threat for us to eat, so the leftovers must be properly preserved. If there is odor, sour taste or even bacteria visible to the naked eye, it is best to discard them.
Leftovers are best kept in the refrigerator. At the temperature of about 4℃, the reproduction of microorganisms can be greatly inhibited, so the shelf life of food can be prolonged, and the proliferation of vitamins can also reduce nitrate to nitrite. Therefore, cold storage can not only inhibit microorganisms, but also inhibit the synthesis of nitrite, killing two birds with one stone, especially in hot summer, microorganisms multiply quickly, and dishes at noon may deteriorate in the afternoon, so they must be put into cold storage immediately. Although it is okay to eat leftovers, it is still not recommended that you eat leftovers often. It is best to have fresh food. After all, nutrients are lost, and there will be a little fungus intake. These fungi may also accumulate and threaten gastrointestinal health. Therefore, the first is not to eat leftovers often, and the second is that leftovers must be heated for a certain period of time before eating.