The difference between food additives and preservatives is mainly reflected in the following two aspects:
Different functions:
The main function of preservatives is to prevent food from spoiling and inhibit the growth of microorganisms, thereby extending the shelf life of food. Common preservatives include sodium benzoate, potassium sorbate, sorbic acid, calcium propionate, etc.
Food additives are used to increase food nutrients, improve food quality, and facilitate food processing. Food additives can be artificially synthesized chemicals or natural substances, including antioxidants, acidity regulators, colorants, emulsifiers, thickeners, sweeteners, nutritional enhancers, flavor enhancers and other types.
Inclusion relationship:
There is an inclusion relationship between food additives and preservatives, that is, preservatives are a type of food additives. Food additives are a broader concept that includes a variety of substances used to improve food quality and extend shelf life, including preservatives.
In addition, it is worth noting that although food additives and preservatives play an important role in the food industry, excessive or improper use may pose a hidden danger to human health. Therefore, when purchasing food, you should pay attention to the ingredient label to ensure the safety and health of the food.