In fact, every food has a series of "control indicators", such as water content, hardness, appearance, bacteria, taste and so on. Technically speaking, the shelf life is to preserve a batch of food according to the required conditions. Every once in a while, take out some samples and test all relevant indicators. As long as one index exceeds the set range, it is considered that this food has expired.

However, in practice, the shelf life of food labels is restricted by many factors. For example, the production cycle of goods, the national standards of some foods, and the shelf life are more like a promise of manufacturers. During the shelf life, the flavor, taste and safety of food will be guaranteed. If something goes wrong, the manufacturer needs to be responsible. After the shelf life, it doesn't mean that it is broken, but the manufacturer will no longer bear any responsibility for the food that has passed the shelf life.

So, sometimes expired food just means that the appearance is not so attractive and the taste is not so good … such food can still be eaten. But the problem is that expired food may also lead to too many pathogenic bacteria, which may cause diseases after eating. People can't tell what's wrong with expired food.

Can I still eat food that has passed the shelf life?

Obviously, the deterioration of food is a continuous and gradual process. Food will not be honest because it is within the shelf life, nor will it become toxic immediately because it has passed the shelf life. Eating food beyond the shelf life is not necessarily a problem, but the longer it exceeds the shelf life, the greater the probability of problems! So it is not recommended to eat.

For those food raw materials, semi-finished products and pickled foods, there is no shelf life to help measure, so we need to use a food safety detector to detect and identify a number of food safety indicators, so as to judge whether it is edible. Guanyu Instrument Food Safety Detector can quickly and quantitatively determine the contents of pesticide residues, toxic and harmful substances, additives, illegal additives, water quality safety, heavy metal residues, etc. in food to ensure food safety, and provide a variety of food safety detector solutions.

In people's living environment, food is not only the main source of nutrition, but also plays an important role in people's life, work and study. It is one of the issues recognized and concerned by consumers and the whole society. Therefore, food hygiene monitoring can effectively ensure the continuous improvement of personal quality of life. If the relevant inspection departments adopt scientific and effective methods and carefully inspect all kinds of foods, food hygiene and safety can be fundamentally guaranteed.