#Dietitian takes you to eat ##Health Answer##Truth Is Coming #https://insurance.snssdk.com/web/health-quiz/articlecard/quiz?entry_from=101&quiz_id=165
Many people talk about preservative discoloration, today we will recognize the preservatives added to food.
1. Common preservatives are: benzoic acid and its sodium salt, sorbic acid and its potassium salt, propionate, sulfurous acid and its salts, sulfur (so2), co2
2. The role of preservatives: inhibit or kill microorganisms.
3. Physiological function of preservatives: Taking benzoic acid and its sodium salt as an example, benzoic acid can be combined with glucuronic acid in the body and then excreted with urine. Preservatives such as sodium benzoate and potassium sorbate are recognized as safe around the world, and are used in all countries, as long as they are within the safe range, there is no harm to the human body.
4. Is food safe without preservatives? If there is no bacteriostatic effect of preservatives in food, microorganisms in food multiply quickly, and food quickly spoils. For example, if there is no preservative in the bread, it will quickly deteriorate and mildew, and if it is accidentally eaten, it may cause poisoning.
Therefore, for preservatives, don't make a fuss, add preservatives to make food shelf life long, more safe.
5. Carbon dioxide (co2) is also a preservative, such as it is used in carbonated drinks to prevent corrosion.
6. Now the canned fruit is without preservatives, after high temperature cooking, can kill most of the bacteria, encapsulation also need to be pressurized, and the sugar water concentration is high, can also inhibit the reproduction of microorganisms, so there is no need to add preservatives to preserve. However, in terms of nutritional value, most of the vitamins have been destroyed at high temperatures, and the canned food that is finally eaten is actually no different from the concentrated sugar water.