Chlorine disinfection is a commonly used disinfection method for preserving aquatic products, but it has significant drawbacks such as poor disinfection effectiveness, residue, corrosion, and environmental pollution.

Ozone, as a new disinfectant for aquatic products, can effectively disinfect and preserve aquatic products through three methods.

There are currently three ways in which ozone is used for preserving aquatic products: ozone water, ozone ice, and ozone gas.

The ozone water produced by the high concentration ozone water integrated machine has extremely strong oxidation and sterilization abilities. Using it for treatment can greatly reduce the original bacterial count of aquatic products, including bacteria and spores such as Escherichia coli and Staphylococcus aureus, thereby extending their storage period. A study has found that using a concentration of 4 Soaking yellow croaker in 68mg/L ozone water for 15 minutes has a better preservation effect than other groups, and can extend its preservation period by 2 days. The use of 10mg/L mobile ozone water by Hebei Lantis Environmental Protection can extend the shelf life by more than 3 days. The contact time of ozone water is generally 10-15 minutes. It varies depending on the category of aquatic products.

Ozone water has been applied in the processing of squid, salmon, eel, flounder, octopus, tuna, mackerel, oysters, shellfish, seaweed and other species.

Freezing ozone water into ozone ice, the ozone in the ozone ice is slowly released as the ice melts. Ozone ice has a significant inhibitory effect on bacteria in the mucus on the surface of fish, and its excellent sterilization efficiency and slow half-life at low temperatures make it particularly suitable for the preservation and transportation of aquatic products. Using it to preserve aquatic products can achieve very good preservation effects. A study has found that when ozone ice with an ozone content of 5mg/kg is used to preserve tilapia fillets, vannamei shrimp, South American white shrimp, and tilapia, the total bacterial count of the experimental group is reduced by 82% to 97% compared to the control group, which can extend the shelf life of the products by 3-4 days.

The use of ozone gas can improve sensory quality and reduce the number of microorganisms.

Lantis Environmental Protection Tip: Treating aquatic products with ozone water, ozone ice, and ozone gas can effectively reduce the original bacterial count of aquatic products and extend their storage period. In the application of ozone water: flushing>flowing>static soaking. Using ozone as a disinfectant for aquatic products can not only effectively extend their shelf life, but also improve their color, taste, and aroma; Remove odors. The most important thing is that the reasonable addition of ozone will not have any impact on the quality and nutrition of aquatic products. In addition, the use of ozone to treat aquatic products will decompose into oxygen, leaving no harmful substances and not affecting human health. Therefore, ozone preservation will become a very important way to preserve aquatic products in China.