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The harm of street snacks?
Mala Tang, mutton kebabs, hairy eggs, sugar-coated haws, seafood stalls ... Speaking of these street snacks, I believe many people are already salivating. But when the words toilet, formalin, rat meat, gutter oil … are associated with snacks at the same time, I don't know what kind of scenes will appear in your mind! Street snacks are often the food that best reflects local characteristics, and they are cheap, so they are popular. However, from a health point of view, it is better to eat these street snacks carefully.

1. Hot spicy dip

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Although mala Tang is delicious, it has hidden dangers. Mala Tang is not inedible, but the following points should be noted: 1. The spicy pot should be cleaned in time and the ingredients should be cleaned. Because ordinary copper pots are easy to grow a thin layer of green rust after stopping using, which is harmful to human health. It will be cleaner if the ingredients are imported directly, otherwise it will cause more diseases. 2. The fire at the bottom of the pot must be strong. If eaten before boiling, germs and parasite eggs are not completely killed, which is easy to cause digestive tract diseases. 3. Don't be too hot in Mala Tang Can. Because the data show that people's mouth, esophagus and gastric mucosa can only tolerate the temperature of 50℃-60℃, too hot food will damage the mucosa, leading to acute esophagitis and acute gastritis. 4. Mala Tang should not be too strong and spicy. Being too fat can easily lead to hyperlipidemia, gastropathy, duodenal ulcer, gallstones, oral ulcers, gingivitis and hemorrhoids. Suggest light and moderate spicy.

At present, infectious diseases and gastrointestinal diseases are at a high incidence. If the stall owner engaged in mala Tang business carries infectious bacteria such as tuberculosis, dysentery and hepatitis B, it will bring great harm to consumers.

2. furry eggs

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Hairy eggs are mostly used to hatch chickens. Their development stopped because of improper temperature and humidity or infection with germs, and they died of chicken embryo eggs in eggshells. The nutritional composition of this kind of chicken embryo egg has changed, and almost all of them contain bacteria such as Escherichia coli, Staphylococcus, Typhoid Bacillus and so on. It is easy to be poisoned after eating, causing dysentery, typhoid fever, hepatitis and other diseases. Whether the raw eggs are cooked or not, they will cause acute intestinal infectious diseases during frying. In addition, the hormone content in hairy eggs is particularly high, which will have a certain negative impact on the growth and development of teenagers. So young people had better eat less.

3. Roasted and salted mutton kebabs

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Is the kebab you eat really "mutton"? As a special snack, kebabs have always been very popular with the public. As we all know, in order to get more profits, some vendors tampered with this small mutton string. It is understood that many kebabs on the market now are actually cat meat, beef and even dead pork. Those substitutes, soaked in sheep oil and some seasoning water, smell so bad that ordinary citizens can't tell them apart at all.

What most people don't know is that many barbecue raw materials, such as mutton kebabs and squid, have serious hygiene problems, and often mutton brisket, mutton offal and other scraps are processed into fake mutton kebabs. Many barbecue stalls recycle used bamboo sticks, which also easily leads to the spread of diseases. In the process of baking, if the food is baked too tender, it may get parasitic diseases after eating. If you barbecue food directly on an open flame, charcoal will not burn completely, and carcinogens will stay on the barbecue food, which is harmful if you eat too much. In the meat processing, according to the Regulations on Food Hygiene Management, frozen meat birds should be completely thawed before cooking, and then fully and evenly heated for cooking. For example, kebabs are barbecued directly if they are not completely thawed. Conventional cooking temperature is not enough to kill microorganisms, and eating with bacteria is easy to cause intestinal problems.

4. stinky tofu

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The stinky tofu stalls on the street basically have no hygiene license, which has great health and safety hazards. Most of these street stinky tofu are made of ferrous sulfate, an industrial raw material, which is harmful to health if eaten too much. Some black-hearted tofu processing sites even use inferior additives and preservatives and colorants prohibited by the state. As far as we know, the fermentation process of stinky tofu is carried out under natural conditions and is easily contaminated by microorganisms. Stinky tofu contains a lot of volatile basic nitrogen, averaging 4.9 grams per kilogram, and hydrogen sulfide averaging 0/6.5 mg per kilogram/kloc. These two substances are decomposed by protein, which is harmful to human body. In addition, the use of Mucor in the early stage of stinky tofu fermentation is easy to be contaminated by other bacteria, including pathogenic bacteria. So don't eat too much stinky tofu at a time, so as not to cause gastrointestinal diseases.

5. Fried dough sticks and oil cakes

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Eating fried dough sticks for breakfast is a habit of many people, but in view of the harm caused by eating fried food and the possible adverse consequences of additives in it, Professor Li Yong, an expert in nutrition and food hygiene, suggested that everyone should eat fried dough sticks as little as possible, and healthy adults should not eat fried dough sticks more than twice a week, and the amount of each time should not exceed two. Li Yong told us that 80% of the aluminum in the fried dough sticks on the street exceeded the standard, and excessive aluminum intake may lead to dementia. Generally, when eating fried dough sticks, "diners" should carefully smell whether there is ammonia. If there is ammonia, it probably uses a bulking agent-ammonium bicarbonate. After the fried dough sticks are heated in the oil pan, ammonium bicarbonate is decomposed into ammonia and carbon dioxide at high temperature, and the generated gas will expand the fried dough sticks. Although a small amount of this additive has little effect on the body, the dosage is difficult to control and can only be manipulated by experience.

Recently, the Beijing Municipal Health Bureau conducted hygiene supervision and inspection on the breakfast sold in street stalls. However, the aluminum content of fried dough sticks and oil cakes seriously exceeded the standard, and the qualified rate was only 22.2%.

thin pancake made of flour

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Many people who wait for the bus at work have no time to have breakfast at home or at work, so in order to save time and trouble, they all buy pancakes at the station. However, some illegal hawkers use black gutter oil and excessive lemon yellow pigment. Therefore, it is best not to buy pancake stalls without health permits on the street.

Expert: After being refined, the waste oil will contain impurities and be contaminated with aflatoxin, benzene and other toxic substances. Long-term consumption will cause chronic diseases such as tumors, such as stomach tumors and liver tumors. I don't know how many ways money will spread in the circulation process, especially the spread of hepatitis B virus, dysentery virus and other viruses, and the hands will be directly infected with bacteria. Therefore, if you don't separate the hand that takes food from the hand that takes money, the possibility of getting infected with viruses through money, especially enteritis, dysentery and hepatitis, will greatly increase, and it is easy to cause acute diseases, such as food poisoning and enteritis. So be sure to buy breakfast at those early stalls that can really pay separately.

7. Baked sweet potato

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Nowadays, people are no longer keen on the diet of big fish and big meat, but hot and delicious baked sweet potatoes have become some people's favorite snacks. I believe that most people who like baked sweet potatoes rarely ask about the source of the baking bucket. You know, the barrel of baked sweet potatoes has been smoked and roasted, and the whole body of the baked barrel has turned black, and the original words on the barrel wall are simply unrecognizable. In fact, most of these "unidentified" barrels come from garbage collection stations, and vendors use them to simply clean and modify them to bake sweet potatoes. The residue in the barrel will enter the sweet potato during baking, and even if it is peeled and eaten, its harm cannot be completely avoided. If benzene is contained again, it will damage the respiratory tract and nervous system, and people will feel dizzy after eating it. There are also some vendors who bake sweet potatoes contaminated by black spot bacteria in a baking bucket, but on cooked sweet potatoes, the original obvious black spots are hard to distinguish. Acute poisoning symptoms such as vomiting and diarrhea will appear after eating, and long-term consumption will also lead to liver damage.

8. Seafood food stall

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Some people may think that seafood that has not been heated or cooked at high temperature will not lose nutrients, and natural seafood is the best. You can eat it raw as long as you dip it in mustard. Actually, it is not. Nutrition and food safety expert He told us that vegetables and fruits are best eaten raw, but seafood is best not eaten raw. There are many pathogenic bacteria and parasites hidden in all kinds of fresh seafood. If it is not disinfected at high temperature, it is easy to infect diseases. In addition, if protein and other nutrients in seafood are not cooked, it is not easy for people to digest after eating, and it is not conducive to human absorption. Therefore, eating seafood and other foods must be fresh and pollution-free, and it is best to cook them thoroughly. Don't damage your health by eating delicious food.

9. Fried chicken wings

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Because fried chicken wings are hard to distinguish, be careful of some street stalls selling you smelly chicken wings. In addition, although fried food tastes delicious, it stays in the stomach for a long time and is not easy to digest and absorb. In addition, alum or alum potassium is often added as a leavening agent in the production of fried foods, both of which contain aluminum. Aluminum is an amphoteric element, which means that aluminum can react with acids and bases. The compounds formed after the reaction are easily absorbed by the intestine and can enter the brain, affecting children's intellectual development. Fried food also contains a variety of carcinogens. One of the more powerful ones is called acrylamide. It is mainly produced in high-temperature fried food, which has a certain stimulating effect on eyes and skin, can be absorbed through skin, respiratory tract and digestive tract, and partially accumulates in the body, mainly affecting the nervous system.

10. steamed bread

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Steamed buns have a long history, and there are many brand stores and local characteristics, such as Goubuli and soup dumplings, which are all popular. However, the buns sold at the street buns stand are another matter. Recently, we learned that some vendors made a big fuss about buns. The meat buns they made had the following four hidden dangers: First, some vendors made buns with "blood neck meat". "Blood neck meat" refers to the meat connecting the head and body parts of pigs, which contains lymph nodes, lipomas, thyroid gland and so on. This kind of meat is cheap, but its quality is poor, and it will accumulate a lot of germs and viruses. Heating for a short time is not easy to kill, and eating it is easy to get sick. Second, the meat stuffing is mixed with stale vegetables. Third, use more lard to make steamed buns smell better. Fourth, once the raw materials for stuffing are a little deteriorated, as long as they are not too serious, more seasoning and salt will be added to cover up the taste of the stale raw materials.