First, the problems that should be paid attention to in food safety
1. Buy in regular stores instead of buying "three noes" food around 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 indicate: product name, ingredient list, net content, factory name, address, 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. The propaganda of advertisements does not represent science, but only reflects the interests of businesses.
Second, how to distinguish the shelf life and shelf life of food?
Shelf life (the best edible period) refers to the period when the quality is maintained under the storage conditions specified in the label and it can still be eaten for a certain period of time.
Shelf life (recommended last edible date) refers to the expected date of termination of consumption under the storage conditions specified in the label, and the food beyond the shelf life is not edible.
Third, how to correctly choose drinks
1. Check whether the label, QS mark, production date, shelf life, factory name and address are complete, and whether the ingredients in the ingredient list meet the standards of this kind of beverage.
2. Select the products produced recently. When buying carbonated drinks, try to choose products that have been produced recently and whose tanks are hard and not easily deformed.
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.
Fourth, what should I pay attention to when drinking milk?
Drinking milk regularly and in moderation is beneficial to the growth and development of bones and has a positive effect on improving physical fitness. But if you can't drink it correctly, it will have adverse effects on your body. Therefore, you should pay attention to the following aspects when drinking milk.
1. Not all people are suitable for drinking milk. Patients with lactose intolerance, milk allergy, cholecystitis and pancreatitis should not drink milk. According to the different fat content, milk can be divided into three categories: full fat, semi-defatted and defatted, in which full fat milk contains all the ingredients of milk and is suitable for children to drink.
2. Milk can't be drunk as water. Milk contains a lot of water, but because it is a hypertonic drink, drinking too much or when sweating, or losing too much water will easily lead to dehydration.
3. Drink milk in moderation. Drinking milk normally will not lead to protein overdose. Children and adolescents drink 500 ml.
Milk should be drunk warm, not boiled. After milk is boiled, under the action of high temperature, protein will change from sol state to gel state, and calcium will precipitate out, and the original rich vitamins and other vitamins will be destroyed, and the nutritional value will be reduced.
Finally, grasp the "opportunity" of drinking milk. "Don't drink milk on an empty stomach or drink tea and milk." When you drink milk in the morning, you should eat some cereal rich in starch at the same time.
Five, ten kinds of "junk" food and its harm
(a) fried food, the main hazards are: 1. Fried starch leads to cardiovascular diseases; 2. Containing carcinogens; 3. Destroy vitamins and denature protein.
(2) The main hazards of pickled food are: 1. Lead to hypertension, renal overload, nasopharyngeal carcinoma; 2. Affect the mucosal system (harmful to the stomach); 3. It is easy to get ulcers and inflammation.
(3) Processing meat food (dried meat, floss, sausage, etc.). ), the main hazards are: 1. It contains one of three carcinogens: nitrite (antiseptic color); 2. It contains a lot of preservatives, which increases the burden on the liver.
(4) Biscuits (excluding low-temperature baking and graham crackers) mainly have the following hazards: 1. Excessive edible flavors and pigments have a burden on liver function; 2. Seriously destroy vitamins; 3. Too many calories and low nutrition.
(5) The main hazards of soft drinks and cola foods are: 1. Containing phosphoric acid and carbonic acid will take away a lot of calcium from the body; 2. The sugar content is too high, and you feel full after drinking, which affects the dinner.
(6) The main hazards of convenience foods (mainly instant noodles and puffed foods) are as follows: 1. High salt content, containing preservatives and essence, is harmful to the liver; 2. Only calories, no nutrition.
(7) Canned food (including fish and fruit) has the following main hazards: 1. Destroy vitamins and denature protein; 2. Too many calories and low nutrition.
(8) Preserved plum food (preserved fruit), the main hazards are: 1. It contains one of three carcinogens: nitrite; 2. The salt is too high, containing preservatives and essence, which is harmful to the liver.
(9) Frozen dessert foods (ice cream, popsicles and all kinds of ice cream) have the following main hazards: 1. Using cream is easy to cause obesity;
2. Too high sugar content affects dinner.
(10) The main hazards of barbecue food are: 1. Contains a lot of "triphenyltetrapropylpyridine" (the first of the three carcinogens); 2. 1 roasted chicken leg = toxicity of 60 cigarettes; 3. It leads to carbonization and degeneration of protein, which increases the burden on kidneys and liver.
Diet and health of primary school students-the harm of snacks
Now many parents think that snacks are children's food, so they like to buy snacks for their children. Child nutritionists believe that children eating too many snacks will only be harmful to their health.
There are many kinds of snacks, which can be roughly classified as candied fruit, such as preserved plum, preserved fruit, dried melon and fruit, etc. Puffed food: such as shrimp strips, potato chips, squid crisp, vegetable rings and popcorn; Dried meat and dried fish: such as beef jerky, beef breast, pork, dried fish, fish fillets, jelly, etc.