Can fast expired food be eaten? Is fast expired food harmful
4hw.com.cn: I believe many friends have encountered this situation. I found that some food in my family is about to expire. It's a pity to throw it away. It's not safe to eat it. Can you eat the expired food? Is it harmful to health to eat food that is about to expire? Let's take a look at the correct answer.
The shelf life is not to judge whether the food is bad or not
The shelf life of a product refers to the best edible period of the product provided by the producer, which is generally marked on the product with limited use time. Within the warranty period, the manufacturer of the product shall be responsible for the quality of the product conforming to the relevant standards or the quality conditions expressly guaranteed. However, shelf life is not the only standard to identify whether food products are deteriorating. Food may deteriorate prematurely due to storage methods, environment and other problems.
The storage conditions of food are very important for the quality of food. The shelf life is usually formulated according to the relevant suitable storage conditions of this kind of food. For example, on the packaging of ordinary biscuits, we can see the words "storage method: avoid the sun, store in a cool and dry place, and eat as soon as possible after opening". In other words, if biscuits are stored in a severe sun, high temperature, or humid environment, the actual shelf life of biscuits will be much shorter than the pre-set shelf life on the package. The integrity of food packaging is also an important standard to measure the quality of food. The food with packaging defect is easy to be affected with damp or bacteria, and its safety is relatively low. For opened food, the shelf life will also be shortened. Therefore, food should be eaten as soon as possible after opening to avoid mildew.
In addition, the chemical stability of preservative additives in food will be weakened with the increase of time. In other words, the longer the food leaves the factory, the less guaranteed the quality will be.
Shelf life not equal to last edible time
After the shelf life, some foods are still edible from the perspective of safety, but its quality may decline to some extent. For example, after the frozen food expires, the pathogenic bacteria may not exceed the standard, and there is no adverse reaction caused by eating it after cooking. However, due to the storage time is too long, some changes have taken place in the flavor and taste, the taste is not fresh, the vitamin content has also decreased, and the fat may be slightly oxidized.
Six 'limits' of food near shelf life
1. The warranty period is 45 days before the expiration date of more than 1 year
2. The shelf life is more than half a year but less than 20 days before the expiration date of 1 year
3. The shelf life is more than 90 days but less than 15 days before the expiration of half a year
4. The shelf life is more than 30 days but less than 90 days 10 days before the expiration date
5. 5 days before the expiration date of more than 16 days but less than 30 days
6. 1-4 days before the expiration of the shelf life of less than 15 days
Shelf life of common foods
Dairy products: dairy products are very prone to deterioration. If exposed to normal temperature, they will deteriorate within a few hours. If you can't eat the special yogurt in the supermarket within the shelf life, don't buy it.
Edible oil: generally, the shelf life of edible oil is 18 months, but this is based on the premise that the package is not opened. The fatty acids in edible oil will change with the storage time, and the nutritional value will decrease. Therefore, it is very important to buy oil to see the production date, the fresher the better. When the edible oil is exposed to the air after unsealing, the shelf life will be shortened correspondingly. Even if it is not eaten, it should be changed at least once every three months.
Rice noodles: the shelf life of rice noodles at room temperature is 6-12 months. If in the north, as long as it is not placed in a high temperature and humidity place, the storage conditions are normal, which can be extended to 24 months. However, once the rice noodles are mildewed, they must not be eaten.
Bread and pastry: there are different shelf life according to the season, generally 7 days in winter, 3-5 days in spring and autumn, 1-2 days in summer. But if the bread is not preserved properly, mold can usually grow the next day. At this time, even if it is not due, it must be resolutely thrown away.
Eggs: there is no fixed shelf life. Generally, it is OK to eat eggs within 3-5 weeks after purchase. The quality of eggs usually drops one grade every week, but they are still edible.
Only when we know the shelf life correctly can we eat healthily. Don't buy out of date food because you want to be cheap, so your health will be threatened.