Overnight leftovers are toxic and cause stomach cancer?

As people's lives continue to prosper, many people are very concerned about daily health care, and people are extremely fearful of food that causes disease and cancer.

The place I live is a combination of urban and rural areas, but also see very many people have the habit of having leftovers overnight, there are very few families who eat a full meal, and some families even have little green vegetables will be left until the next day to eat the habit, because most families now have a refrigerator, so storage and freezing are very convenient. Some people are torn, I heard that overnight leftovers are easy to cause gastrointestinal discomfort, but also contain carcinogenic substances, eat up and lose the fresh taste, very unsure of the heart.

I carefully observed that the people's families have the habit of leftovers, asked what is the fear of eating leftovers, have said that the most fear is to eat gastrointestinal discomfort and cancer-causing legends, but can not afford to throw away the waste.

It seems that this topic still has some influence on the lives of people.

What is the poison of overnight leftovers and leftover rice?

Overnight leftovers and leftover rice are best not to eat, not only the nutritional value is not high, there will be nitrites, bacteria, and mold! It can even cause the occurrence of stomach cancer. Many people are questioning, but also often heard some people say so, so are trying not to have leftovers, leftovers overnight.

What is the truth? The food testing department has conducted experiments on this.

Experiment one: overnight leftovers

The leftover chlorophyll leftovers and meat dishes were packed in stainless steel pots and ceramic pots into 2 to 6 degrees Celsius refrigerator cold meals 0 hours, 12 hours, 24 hours, and 48 hours later, respectively, to detect leftovers, leftovers found that the amount of nitrite generation in leftovers, leftovers is increased with the length of storage time and heat temperature, if leftovers, leftovers refrigerated in 2 to 6 degrees Celsius Refrigerator for a short period, its generation of nitrite increased less, and the increase in bacteria and mold is also less.

Experimental results show that.

(1) nitrite: the shorter the storage time of overnight leftovers and leftovers, the nitrite in them does not exceed the safety limit, but the longer the storage time, the longer the heating time, and the more the nitrite content will increase.

(2) heavy metals: stainless steel appliances with leftovers, leftovers, in an encounter with alkali, salt, and acidic substances will dissolve iron, chromium, nickel, manganese, and other substances, these excessive metals will cause some damage to the body.

Therefore, leftovers, leftovers are best served in ceramic placed 0 when it will not contain heavy metals.

Experiment two: overnight meat dishes

We say meat dishes include the most meat, when the meal is not finished dishes left over become the next meal or overnight dishes. Meat contains natural nitrates is very little, and overnight meat and vegetable safety problems mostly from the growth of bacteria. Meat and vegetables are not the same, meat is very suitable for the growth of bacteria, and its own carries a lot of bacteria, such as the pork we buy in the morning, if not put into the refrigerator a cold meal, after encountering heat will be a short time after the bacterial decomposition of the unpleasant odor; and even at room temperature preservation temperature (about 2 days), raw meat will grow a large number of bacteria. If the meat is cooked, the bacteria carried by the cooking process have been killed, so it can be preserved for a longer period. But cooked meat will produce new bacteria because of the storage time, and the bacteria produced will not be killed, so the risk is higher.

Experimental results show that;

Overnight meat leftovers do not contain much nitrate. Industrial processing of cooked meat generally contains some preservatives (i.e. nitrites), that are generally not to the human body and can be detected to bring harm.

Overnight vegetables are not so much as to cause stomach cancer, repeated heating will affect the taste, and antioxidant nutrients are easily lost, if you can't finish it because of the current meal, it is recommended that it is best to be sure to finish it within 2 days.

Some people say that the nitrates contained in overnight vegetables can be converted into minestrone, which has the risk of causing cancer. Most food contains nitrate, nitrate will be converted into nitrite on the action of certain enzymes in food, and bacteria in the environment will also reduce the nitrate in the substance into nitrite, and nitrate will be converted into minestrone in the human body, which is one of the recognized carcinogenic substances.

So, eating overnight vegetables really can cause stomach cancer to occur? The enzyme activity needs a certain temperature, and when the vegetables are cooked, the enzyme loses its activity, which means that the enzyme in the vegetables can no longer convert nitrate into nitrite, and the next thing is that the bacteria are working, and it takes a certain amount of time for the bacteria to multiply, and when it reaches a certain amount, it may produce a considerable amount of nitrite, which is The people often say that the root cause of overnight vegetables can not eat.

We will be a pot of vegetables in the surrounding temperature of different environments, at the same time. That is bacterial reproduction numbers may be different, but in general, low temperatures can inhibit the reproduction of bacteria, simply with overnight vegetables to consider the problem of cancer or the lack of a little scientific evidence.

So, how much nitrate amine intake will cause cancer?

The nitrate contained in food needs to be converted into nitrite to form minestrone under suitable conditions of acidity, temperature, and microbial population, which may lead to stomach cancer if a large number of minestrone are inhaled.

Although experiments have proven that overnight vegetables and rice are not harmful to the body, still need to eat them scientifically and healthily. For example, it is better not to eat fish, seafood, leafy green vegetables, and cold dishes overnight because they contain very high carcinogenic substances. As for the occurrence of gastric cancer, it is related to improper diet. If you often eat overnight food for a long time, chemical reactions will easily occur after repeated heating, which will produce degraded ingredients and cause cancer easily.

It is generally recommended that leftovers should not be left for more than 24 hours, and it is best not to use stainless steel tableware for leftovers, which will release substances harmful to the human body. It is best to use ceramic-type tableware or fresh boxes stored in the refrigerator.

Overnight seafood has damage to the liver and kidneys because overnight will produce protein degradation substances. Half-cooked eggs are easy to breed bacteria, and eating overnight will easily produce a feeling of bloating; especially for foods such as mushrooms and silver fungus, there are generally a lot of nitrates left after cooking, which can produce the risk of food poisoning if left overnight for a long time.

Our gastric mucous epithelium is very fragile, so a long intake of excessive nitrite will damage the gastric mucous and stimulate the cells to become cancerous, which may induce gastric cancer.

The occurrence of stomach cancer caused by overnight food requires a professional perspective on whether overnight food can be eaten or not, and cannot be judged correctly or not from the perspective of legends, which may be misled, the problem is that it needs to be eaten correctly to benefit health.