Why food preservatives are used in food

Food preservatives play a very important role in the modern food industry. When Qingdao Dawei company develops the existing products, it hopes to popularize the knowledge of multi products to people, so that people can have a deeper understanding of the food antiseptic industry.

Food in the general natural environment, because of the role of microorganisms, will lose its original nutritional value, organizational characteristics and color, aroma and taste, and become food that does not meet the health requirements. Food preservative is a chemical compound or natural substance added to food for the purpose of food preservation and food processing and storage and transportation. It can prevent food from spoilage caused by microbe, so that food has a certain period of preservation in the general natural environment.

In modern food processing, only a considerable amount of preserved food capacity is possible to meet the needs of consumers. Therefore, food must use appropriate anti-corrosion technology. The use of food preservatives, in a broad sense, is to reduce and avoid human food poisoning. In a narrow sense, it is one of the effective measures to prevent the action of microbes and prevent food corruption.


Preservative is a food additive used to maintain the original quality and nutritional value of food. It can inhibit the growth and reproduction of microorganisms, prevent food spoilage and prolong the shelf life. The antiseptic principle of antiseptic is roughly as follows: one is the enzyme system that interferes with microbes, destroys its normal metabolism, and inhibits the activity of the enzyme. The two is to solidify and denaturate the protein of the microorganism and interfere with its survival and reproduction. The three is to change the permeability of the cell serous membrane, inhibit the removal of the enzymes and metabolites in the body, and lead to its inactivation.