General knowledge of food safety in summer school
Students should pay attention to their diet in summer.
1. Ensure sufficient supply from protein. At high temperature, protein decomposition of human body increases, and urine nitrogen excretion increases, resulting in negative nitrogen balance. Therefore, the intake of protein should be moderately increased, but not too much, so as not to increase the burden on the kidneys. Among them, fish, meat, eggs, milk and beans are high-quality protein, accounting for 50% of protein's intake.
2. Eat more fruits and vegetables and provide enough vitamins. Sweating at high temperature leads to a large loss of water-soluble vitamins, especially vitamin C, which is twice the standard. At the same time, vitamin B should be supplemented. Fresh vegetables and fruits ripe in summer such as tomatoes, watermelons, bayberry, peaches and plums are extremely rich in vitamin C. Vitamin B is abundant in cereals, beans, animal livers, meat and eggs. In summer, people can supplement these foods or take some yeast tablets orally.
3. Replenish water and inorganic salts. When the human body sweats a lot or the body temperature is too high, it will not only cause insufficient water in the body, but also lose a lot of elements such as sodium and potassium. Lack of sodium will aggravate water shortage, and attention should be paid to supplementing water and inorganic salts. The supplement of water and salt is in the form of soup, and vegetable soup, broth and fish soup can be selected alternately. Drinking a small amount of soup before meals can also stimulate appetite. For people who sweat a lot, a certain amount of salty drinks should be added between meals. In addition, you can also eat some fruits and vegetables with high potassium content, such as rape, celery, edamame, mushrooms, potatoes, laver, peanuts, oranges, red dates and so on.
4. Eat more foods that clear away heat and promote diuresis. Eat heat-clearing food in midsummer Commonly used heat-clearing foods include watermelon, bitter gourd, peach, strawberry, tomato, mung bean, cucumber, etc., and skillfully use seasonings such as garlic, ginger and vinegar to enhance appetite. The main foods for strengthening the spleen and promoting diuresis are winter melon, pumpkin, bitter vegetable, ginger, lotus root, coix seed, yam and so on.
5. Diet is light. In summer, when the temperature is high, you sweat more and drink more water, the gastric acid is easily diluted, the secretion of digestive juice is relatively reduced, and the digestive function is weakened, resulting in poor appetite. Coupled with the factors of lack of sleep and gluttony for cold food in hot days, if you eat greasy food again, it will inevitably increase the burden on the stomach and affect digestion. Therefore, it is advisable to eat less greasy food, and the diet in summer should be light and peaceful. In addition, eating porridge at breakfast and dinner can not only quench thirst, relieve summer heat, but also nourish the body. Such as mung bean porridge, lotus seed porridge, lotus leaf porridge, lotus root porridge, preserved egg porridge and so on.
6. Pay attention to cooking methods. The food should be easy to digest, with good color, fragrance and taste. It is advisable to eat more cold dishes or cooked food, and add some hot and sour condiments to adjust the taste to increase appetite. When eating, you can also eat pickles and seasoning dishes, which not only helps the next meal, but also supplements salt.
7. Although the weather is hot in summer, the diet should not be too cold. Cold drinks, popsicles, cold beer and cold fruits should not be eaten. For example, the watermelon in the refrigerator should not be taken out instantly, but should be left at room temperature for a while before eating. Because a large number of supercooled foods will cause sudden contraction of gastrointestinal blood vessels, causing gastrointestinal dysfunction, gastrointestinal spasm, abdominal pain, diarrhea, and digestive and absorption disorders. Especially for some patients with chronic diseases, eating cold drinks should be selective and temperate. In addition, you can't eat too much in summer and can't digest it, which is easy to damage the spleen and stomach and lead to stomach pain, especially at dinner.
8. Summer is the frequent season of intestinal infectious diseases and bacterial food poisoning, so food hygiene is very important. Raw vegetables and fruits should be cleaned and disinfected. Don't eat spoiled food, eat leftovers after they are fully heated, and don't drink raw water. In addition, the chopping board used in court must be thoroughly cleaned with detergent (especially cracks and knife marks), then washed with clear water and naturally dried. It is best to use chopping boards and knives when they are raw and cooked, which can not only ensure the hygiene of operation, but also prevent diseases from entering the mouth.
If you are satisfied with the above answers, please don't disappoint my kindness, adopt them in time, and don't forget to give me extra points.
2. Summer food safety handwritten newspaper content
Top ten junk food
The top ten junk foods refer to fried foods, canned foods, pickled foods, processed meat foods, fat and animal offal foods, cream products, instant noodles, barbecue foods, frozen desserts, preserved fruits, preserved plums and candied foods. Most of these ten kinds of foods have the "three highs and three lows" of foreign fast food (high calorie, high sodium and high fat; Low in fiber, vitamins and minerals), high in sodium salt or sugar, and containing carcinogens, long-term consumption will have a great impact on human health.
grain crops
Five ancient cereals. There are many sayings about "five grains" in ancient times, and there are two main ones: one refers to rice, millet, millet, wheat and glutinous rice; The other refers to hemp, millet, millet, wheat and glutinous rice. The difference between the two is that the former has rice without hemp, while the latter has hemp without rice. The ancient economic and cultural center was in the Yellow River valley, and the main rice producing area was in the south, while the rice planting in the north was limited, so there was no rice in the original "five grains".
Children's food safety songs
Children, go to school, learn knowledge and develop skills.
Health and safety are also important for learning cultural knowledge well.
Illness comes from the mouth, and food quality comes first.
Choose your food carefully and be careful not to eat it.
Sudan red, hanging white block ... everything is harmful.
See the delivery date of the manufacturer clearly, and never exceed the shelf life.
It's even harder for vendors not to believe in hygiene.
Eat less when frying and pickling, and the health hazards it faces.
Moderate drinks and cold drinks can damage teeth and eat bad stomachs.
Everyone has a sense of security and strives to be a small food guardian.
Eating fruit before and after meals is different.
1. Fruits not recommended to eat on an empty stomach: persimmons, bananas and tomatoes.
Banana is rich in potassium and magnesium, so it is not suitable for people with arrhythmia to eat on an empty stomach, otherwise it will easily lead to adverse reactions; Bananas are cold, and those who are afraid of cold should not eat them on an empty stomach.
Persimmons contain a lot of persimmon gum, especially in immature persimmons and persimmon skins. When eating a lot of persimmons on an empty stomach, it is easy to form stones.
Tomatoes are sour, and eating them on an empty stomach will cause hyperacidity, which is not conducive to gastrointestinal health care. Therefore, people with stomachache, gastritis and gastric ulcer should not eat sour food such as tomatoes on an empty stomach to avoid excessive gastric acid secretion.
2. Suggested fruits to eat after meals: pineapple, papaya and hawthorn.
Papaya and pineapple contain certain proteases and enzymes, which are helpful for digestion and can be eaten half an hour after meals. Hawthorn tastes sour, and also has the function of invigorating stomach and promoting digestion.
3. Summer security measures
First, the safety knowledge of thunderstorms in summer is a season of frequent thunderstorms, and lightning casualties occur from time to time.
Therefore, everyone should attach great importance to their own safety and master the necessary safety protection knowledge in thunderstorm days. 1, pay attention to close the doors and windows, cut off the power supply of household appliances, and unplug them; Do not get close to conductive objects such as water pipes and heating pipes; Don't stand under the lamp cap line; Don't take a shower under the shower head; Don't use your cell phone.
2. Don't stay on the high-rise platform; Don't gather, run or shout in the corridor. 3. Don't enter isolated shacks, sentry boxes and other low-rise buildings; Don't hide under the big tree to avoid the thunderstorm.
4. Don't open an umbrella and hold high other metal objects in the wild; Don't run in the wilderness; * * * Wear wet clothes, shoes, hats, etc. 5. Don't ride a bike; No outdoor ball games; 6. By car, train, etc. Don't stick your head and hands out of the window.
7. Don't connect the wires for drying clothes and bedding to windows and doors. 8. In case of sudden lightning, you should immediately lower your height, put your feet together, put your hands on your knees, and don't touch the ground with other parts of your body to reduce the damage caused by stepping voltage.
9. Once the human body is struck by lightning, it often appears "suspended animation". At this time, mouth-to-mouth resuscitation and extracorporeal heart surgery should be carried out, which can often bring miracles. Call 120 for emergency treatment at the same time.
Second, food hygiene and safety common sense In summer, the weather is hot, the temperature is high, the humidity is high, the propagation speed of pathogenic microorganisms is accelerated, food is prone to spoilage, and bacterial food poisoning and intestinal infectious diseases are prone to occur. Therefore, students should pay great attention to food hygiene and safety to prevent food-borne diseases such as food poisoning.
1. When buying food, carefully check the name, address, production date, shelf life, etc. Try to choose fresh food with short storage time, and don't buy "three noes" food and expired food. 2. Don't buy untested meat, poultry with unknown cause of death and aquatic products.
Don't buy cooked meat, cold salad, cold noodles and other foods sold by roadside "unlicensed" vendors. 3. The food safety risk of eating raw aquatic products in summer is high. Eat less or not eat raw aquatic products such as grilled shrimp, clam, drunken shrimp and drunken crab.
4. Processed stews and cooked meat foods should not be stored for more than 2 hours, and should be fully heated for more than 2 hours. Vegetables and fruits processed with cold salad must be washed and disinfected before eating.
Don't eat fruits, vegetables and wild food without permission. The melons and fruits eaten directly should be thoroughly washed with clear water and peeled as much as possible.
6. When eating out, you should choose catering units with good sanitary conditions and valid food hygiene licenses. Wash your hands before meals, use public chopsticks as much as possible, and advocate separate meals.
When eating, you should pay attention to distinguish whether the food has gone bad and whether there are foreign bodies. Don't eat illegal food, and don't overeat. 7. The temperature is high in summer. Eating cold drinks at the right time can relieve summer heat and quench thirst, which is good for your health.
Cold drinks should not be eaten too much, and cold drinks should not be eaten when sweating a lot, before and after meals, or after drinking hot drinks. When buying cold drinks, carefully check the production date and shelf life, and try to choose products with close factory date; Don't drink unclean water or raw tap water.
8. In case of suspected food poisoning, immediately stop eating suspicious food, organize treatment as soon as possible, and report to the local health administrative department so as to get timely investigation and treatment, and avoid food poisoning incidents that cannot be identified due to time delay. Third, the prevention of heatstroke safety knowledge heatstroke is one of the common acute fevers in hot summer. Mild patients may have dizziness, headache, nausea, thirst, sweating, palpitations, flushing, body temperature may rise above 38℃, and even collapse symptoms such as decreased blood pressure and accelerated pulse.
In severe cases, the symptoms are high fever (body temperature above 4 1℃), anhidrosis, vague speech consciousness, hand and foot convulsions and disturbance of consciousness. In severe cases, there are critical diseases such as shock, heart failure, pulmonary edema and brain edema. So everyone should pay attention to heatstroke prevention.
1. Wear loose clothes with good air permeability and light color; Wear an insulated sun hat; Drink more salt and boiled water; The indoor and outdoor temperature difference of air conditioner should not be too large. The indoor and outdoor temperature difference of air conditioner shall not exceed 5 degrees; Prepare heatstroke prevention drugs such as Dan, cooling oil, essential balm, ten drops of water and mint tablets.
2. When heatstroke occurs, the patient should be carried to a cool and ventilated place to lie down and rest first, then unbutton the button for the patient, apply a cold water towel to the patient's head and neck, and let the patient drink more water (preferably warm salt water or watermelon juice), and take heatstroke prevention drugs such as Ren Dan and ten drops of water. If the condition is serious, you should be sent to the hospital for treatment or call 120 emergency number.
4. Common sense of flood control and water safety. In a short period of time, if there is continuous rainstorm in an area, the river will rise violently, overflow dams, flood farmland and villages, destroy roads, bridges and houses, and cause casualties and property losses. Therefore, students should attach great importance to flood control safety.
1. Insist on listening to the weather forecast every day, keep abreast of local weather changes, and pay attention to weather signs: it is sultry in the morning, and even difficult to breathe, which is generally a sign that the low-pressure weather system is approaching, and heavy rainfall often occurs in the afternoon; In the morning, I see the pagoda-shaped ink cloud uplift in the distance, and there will usually be strong thunderstorms in the afternoon; For several days in a row, the weather was clear and cloudless, especially hot. Suddenly, I saw a small cloud rising on the windward slope of the mountain, and there was usually a strong thunderstorm at midnight or early morning. When you see funnel-shaped clouds or dragon's tail clouds on the horizon, it means that the weather is extremely unstable and there is the possibility of thunderstorms and strong winds at any time. 2. Don't watch the flood; Don't walk under the mountain, don't walk in low-lying places, and don't stay in ravines and low-lying places; Don't shelter from the rain under trees, fences and rocks; Don't cross the river if you don't know the water.
3. Move as soon as the flood comes. When it is too late to move, you should immediately climb the roof, tall buildings, big trees, high walls and other places to temporarily avoid danger.
At the same time, seek help from the outside world by calling for help, making fireworks and waving colorful clothes. If there are floating objects such as boats, rafts, door panels, barrels, pots and cans, you can save yourself.
4. In case of landslide, you should look around quickly and disperse to a safer place. When evacuating, it is very dangerous to run in both directions as the best direction, whether to run down or up.
Verb (abbreviation for verb) Swimming safety common sense Swimming is a very beneficial exercise in summer, which can not only achieve the purpose of exercising, but also play a role in cooling off the heat and enjoying the body and mind. The most important thing about swimming in summer is safety, and we must not take it lightly. Generally speaking, we should pay attention to the following questions when participating in swimming:
4. What safety should primary schools pay attention to in summer?
Primary school students' summer safety knowledge: 1. Safety of recess activities: It is hot in summer, and clothes are not as thick as in winter. During the break, do as little strenuous exercise as possible to make up for chasing each other and avoid falls and bruises.
Second, food safety food is easy to deteriorate and rot in summer, so be careful not to eat spoiled and rotten food. Especially when buying snacks in stalls, you must choose products that have obtained QS certification from regular manufacturers, and never buy "three noes" products produced by unlicensed manufacturers.
Drinking more cold boiled water can not only replenish water to the body, but also quench thirst. Third, lightning protection. Thunderstorms often roar in summer. When it rains and thunders, pay attention to: 1 Don't squat in the open air, especially in high places, away from high-rise buildings such as telephone poles and water towers.
It's best to unplug the power socket when lightning strikes. It's best to go out and close the doors and windows of each room when it thunders.
Fourth, prevent heatstroke. After sweating a lot, you should replenish water in time.
When going out for activities, especially hiking, mountain climbing or going to places where water is scarce, you must bring enough water. V. Preventing drowning 1 Pupils should swim under the guidance of adults and learn to swim; 2. Don't play alone by the river or the mountain pond; You can't go swimming.
3. Don't go swimming in non-swimming areas; 4. Students who can't swim, don't swim to the deep water area, even if it is not safe to bring a lifebuoy; 5. Make proper preparations before swimming to prevent cramps.
5. What should students pay attention to in summer diet?
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First, eat more green vegetables. The weather is hot and humid. People generally like to eat light, delicious and non-greasy food. Green vegetables have this characteristic and are rich in vitamins and minerals. So try to eat more green vegetables, such as beans, melons, Chinese cabbage, parsley and so on. You can eat it cold and raw, or you can fry it with a little shredded lean meat. Second, eat more fruit juice, sweet, not only to quench thirst, but also to clear away heat and relieve summer heat. Watermelon is sweet, juicy and cool, and it is the first melon to clear summer heat and quench thirst. In addition, melons and cucumbers are eaten raw after washing, or drunk after juicing, which has a good effect of clearing away heat and relieving summer heat. Kiwi contains a lot of vitamin C, which has a very good effect of clearing away heat and relieving summer heat. Third, eat more porridge in the hot summer, people's stomach will be relatively weak due to heat, and it is prone to discomfort such as top-heavy, loss of appetite, and even heatstroke. Therefore, drinking health porridge in summer is one of the dietary conditioning measures, such as mung bean porridge, honeysuckle porridge, mint porridge, lotus seed porridge, lotus leaf porridge and lotus root porridge. Fourth, drink more soup. When people sweat more and lose more body fluids, drinking more soup can not only replenish water in time, but also be beneficial to digestion and absorption. Easy to learn "heatstroke prevention soup" such as hawthorn soup, mung bean sour plum soup, honeysuckle soup, watermelon Cui Yi soup and so on!
6. Primary and secondary school students should pay attention to food safety.
First of all, what is food quality and safety? Food quality and safety refers to the influence of food quality on consumers' health and safety. It mainly includes three aspects: first, food pollution caused by food quality and safety problems. For example: biological pollution, chemical pollution, physical contamination, etc. The second is the quality and safety problems brought about by the technological development of the food industry. Such as: food additives, food production, distribution agents, media, radiation food, genetically modified food, etc. & lt& gt& gt； The third is the abuse of food labels. For example, fake and shoddy food labels, warnings and wrong food ingredient labels are missing, and the function or China food labels (imported food) are missing.
What should primary and secondary school students pay attention to when buying food?
1, go to a regular store and don't buy the "three noes" food street on campus. 2. Buy food from regular manufacturers and try to choose brands with good reputation. & gt3. Carefully check the product label. Food labels must indicate: product name, ingredient list, net content, factory name, place of origin, production date, shelf life, product standard number, etc. Don't buy labels of non-standard products. 4. Is the food suitable for your own consumption? Don't blindly follow advertisements, which do not represent science, but reflect the interests of businessmen. Second, what eating habits should primary and secondary school students pay attention to?
1, boiled water is the best drink, and some drinks contain preservatives and pigments, which is not good for children's health if they are often drunk;
2. Develop good hygiene habits to prevent the spread of intestinal parasitic diseases;
3. Raw fruits and vegetables should be washed before eating to avoid pesticide poisoning;
4, food, pay attention to the date of production and shelf life of food should be selected;
5. Try to eat less or not eat leftovers. If you eat leftovers, you must heat them thoroughly to prevent bacterial food poisoning;
6. Don't eat raw food without medical insurance, such as sashimi and raw water chestnut;
7. Don't eat street snacks without medical insurance;
8. Eat less fried, smoked and grilled foods, such as foods that produce toxic substances. Third, the more students, the better. Do you have dessert? Summer drinks are rich in sugar, and children are more prone to skin inflammation and various diseases. Eating too much sugar in summer will also produce a lot of acidic substances, which will destroy the normal blood acid-base balance and make children acidic. According to medical data, 70% of diseases occur in people with acidic constitution, which will undoubtedly make children suffer from "diseases". In addition to the above functions, many drinks also lack the fat and protein needed for children's development. Drinking too much will affect children's eating dinner and cause malnutrition, so it is best not to exceed 100 ml every day.
Four, smart students nutritious food nutritious food,
Students are very clever:
Eat more fish, shrimp, egg yolk, kelp, seaweed and lean meat.
2. Eat animal viscera once a week, such as animal liver and brain.
3. Fruits rich in vitamin C are eaten every day, such as oranges and apples.
& gt4. Beans or bean products and mushrooms
5 1, twice a week
Step 6 eat bananas, carrots and spinach
Eat milk, milk is the best taurine formula for children, not malt extract. How can five people prevent food poisoning?
1, wash your hands before and after meals;
2. Cook the food for more than 2 hours, and then heat it to 70℃ for eating;
3. After cleaning the peel and removing food;
4. Don't buy active food that exceeds the shelf life;
5. You can't buy roadside food in shops or stalls without hygiene license and business license (especially those shops and stalls where food packaging is not sealed);
6. Don't eat foods that have been diagnosed or suspected of deterioration and may become substances;
7. Do not eat preservatives, pigments and some foods that do not meet health and safety standards. & gt& gt& gt& gt& gt； 6. What vegetables, fruits and vegetables are most suitable for children in summer >>；; Water is filtered by layers of biofilm, and clean, natural, nutritious and biologically active water and drinking water are irreplaceable. Summer is also the season of melons and vegetables, and its water content is above 90%. Wax gourd has the highest water content of 96%, followed by cucumber, pumpkin, towel gourd, bergamot, pumpkin and bitter gourd. & lt； summer
The most important influence factor of cool vegetables on human body is damp-heat toxicity, so eating some cool vegetables is good for all three aspects.
7. Food safety knowledge of students in Far East Second Primary School
First, what problems should primary and secondary school students pay attention to when buying food? 1. Go to a regular store and don't buy "three noes" food around the campus and on the street.
2. Buy food produced by regular manufacturers and try to choose brands with good reputation. 3. Check the product label carefully.
Food labels must be marked with: product name, ingredient list, net content, factory name, address, production date, shelf life, product standard number, etc. Don't buy products with nonstandard labels.
4. Whether the food is suitable for your own consumption. 5. Don't blindly follow advertisements. Advertising does not represent science, but reflects the interests of businesses.
Second, what dietary hygiene habits should primary and secondary school students pay attention to? 1, boiled water is the best drink, and some drinks contain preservatives, pigments and so on. And regular drinking is not good for children's health; 2. Develop good hygiene habits to prevent the spread of intestinal parasitic diseases; 3. Wash raw vegetables and fruits before eating to avoid pesticide poisoning; 4. When choosing food, pay attention to the production date and shelf life of the food; 5. Try to eat less or not eat leftovers. If you eat leftovers, you must heat them thoroughly to prevent bacterial food poisoning; 6, do not eat raw food without health care, such as sashimi, raw water chestnut; 7. Do not eat street food without health protection; 8. Eat less fried, smoked and grilled food, which will produce toxic substances if it is not properly made. Third, do primary and secondary school students eat sweets as much as possible? Summer drinks are rich in sugar, and children who eat too much are prone to skin inflammation and various diseases.
Eating too much sugar in summer will also produce a lot of acidic substances, thus breaking the normal acid-base balance of blood and making children acidic. Medical data show that 70% of diseases occur in people with acidic constitution, which undoubtedly makes children the "number one bed for slimming in Korea".
In addition to the above functions, many drinks also lack protein and fat necessary for children's development. Drinking too much will affect children's eating dinner and cause malnutrition, so it is best not to drink more than 100 ml every day. Nutritious foods that make students smart What nutritious foods make students smart are: 1, eat more fish, egg yolk, shrimp skin, laver, kelp and lean meat 2, eat pig liver, animal brain and other animal viscera 3 once a week, eat fruits rich in vitamin C such as oranges and apples 4, eat beans or bean products 5, and eat mushrooms 1-2 times a week 6.
5. How can individuals prevent food poisoning? 1, wash your hands before and after meals; 2, cooked food placed for more than 2 hours, reheat to 70℃ or above before eating; 3. Wash and peel the fruits before eating; 4. Don't buy food of unknown origin and beyond the shelf life; 5. Don't buy food from small shops or roadside stalls without hygiene license and business license (especially those without sealed packaging); 6. Don't eat food that has been confirmed to be spoiled or suspected to be spoiled; 7. Don't eat food that you know that preservatives or pigments have been added, but you are not sure whether the added amount meets the food hygiene and safety standards. 6. Which vegetables are best for children to eat in summer? The water in melons and vegetables is natural, clean, nutritious and bioactive water filtered by multi-layer biofilm, which is irreplaceable by drinking water.
Summer is also the peak season for melons and vegetables, and its water content is above 90%. The water content of wax gourd ranks first among all dishes, reaching 96%, followed by cucumber, golden melon, loofah, bergamot, pumpkin and bitter gourd.
After the cool vegetables enter the summer, the biggest factor affecting the human body is the poison of summer dampness, so eating some cool vegetables is conducive to promoting fluid production and quenching thirst, clearing away heat and toxic materials, and relaxing bowels. Such as bitter gourd, towel gourd, cucumber, tomato, eggplant, celery, lettuce, asparagus, watercress and so on. They are all cool vegetables, so you might as well eat them often.
"Disinfecting" vegetables in summer is a season of frequent diseases, especially intestinal infectious diseases. At this time, eating more "sterilized" vegetables can play a role in preventing diseases. This kind of vegetables include garlic, onion, leek, chives, garlic sprouts and so on.
7. What should I pay attention to when drinking milk? 1, it is not advisable to drink alcohol on an empty stomach. Many people like to boil milk and drink it when it is cold, as a common drink and juice. Although this is convenient, drinking milk on an empty stomach will make the milk stay in the stomach too short and enter the excretory system too fast, thus affecting the comprehensive absorption of nutrients.
Eat snacks, such as bread, when drinking milk. Biscuits, etc., to extend its residence time in the digestive system.
Health knowledge about kidney disease diet II. It is not advisable to drink iced milk. Drinking cold or iced milk can refresh you, but cold milk is harmful to the stomach and easily causes diarrhea.
3, not suitable for warm storage. Some people like to save trouble, cook milk in the morning, put it in a thermos and throw it away when they want to drink it.
As we all know, milk, a nutritious beverage, is easy to breed bacteria in an environment with suitable temperature, which leads to milk spoilage. 4, should not be cooked for a long time.
Some people boil milk for too long, but it's not good. Because boiled milk usually needs white sugar, and boiled for too long, lysine and white sugar in milk will produce fructosyl lysine at high temperature, which is a substance that is difficult to be digested and absorbed by human body.
5, it is not advisable to drink caked milk. If there are lumps or flocculent substances in milk, it is not suitable to drink any more, because such milk has gone bad.
Eight, how to distinguish the shelf life and shelf life of food? The so-called shelf life (the best edible period and the shortest applicable date) refers to the period to maintain the quality under the storage conditions specified in the label. After this period, you can still take healthy and effective diet pills for a certain period of time.
Shelf life (suggested last edible date) refers to the expected date of termination of consumption under the storage conditions specified in the label, after which the product is no longer edible. Nine, how to buy drinks correctly? First of all, it depends on whether the label, QS mark, production date, shelf life, factory name and address are complete, and whether the ingredients in the ingredients meet the standards of this kind of beverage.
Secondly, choose the products that have been produced recently. When buying carbonated drinks, try to choose products that have been produced recently and whose tanks are hard and not easily deformed.
Third, the choice of drinks should vary from person to person. Fruit juice drinks have certain nutrients and are suitable for teenagers and children, but they cannot be drunk in large quantities for a long time or at one time.
X. Why are some bad habits of hands potentially dangerous? Our hands have many tricks.
8. Summer security measures
Safety precautions in summer include: safety precautions in thunderstorm days; 2. Food hygiene and safety matters; 3. Safety matters of heatstroke; 4. Common sense of flood safety; 5. Swimming safety is very important.
Precautions: Summer is a season with frequent thunderstorms, and lightning casualties often occur. Therefore, everyone should attach great importance to the integrity of thunderstorm days.
2. In summer, the weather is hot, the temperature is high, the humidity is high, the reproduction speed of pathogenic microorganisms is accelerated, food is easy to rot and deteriorate, and bacterial food poisoning and intestinal infectious diseases are prone to occur. Therefore, students should pay great attention to food hygiene and safety to prevent food-borne diseases such as food poisoning.
3. Heatstroke is one of the common acute fevers in hot summer. Mild patients may have dizziness, headache, nausea, thirst, sweating, palpitations, flushing, body temperature may rise above 38℃, and even collapse symptoms such as decreased blood pressure and accelerated pulse. So everyone should pay attention to heatstroke prevention.
4. In case of continuous rainstorm in a short time, the river will rise violently, overflow dams, flood farmland and villages, destroy roads, bridges and houses, and cause casualties and property losses. Therefore, we should attach great importance to flood control safety.
Swimming in summer is a very beneficial exercise, which can not only achieve the purpose of physical exercise, but also play a role in cooling off the heat and enjoying the body and mind. The most important thing about swimming in summer is safety, and we must not take it lightly.