1. Ozone method
Ozone has a strong oxidation effect, not only can eliminate the odor of cold storage, but also can stop the growth of microorganisms. Therefore, ozone generator can be used to eliminate the odor of cold storage. However, if the storage of food containing more fat in the cold storage, it is not appropriate to use ozone treatment, so as to avoid fat oxidation rancidity phenomenon, produce more odor.
2. Formaldehyde method
If the goods in the cold storage are moved out, you can use 2% of formaldehyde aqueous solution (formalin solution) for disinfection and elimination of odor.
3. Vinegar method
Cold storage of aquatic products, the smell will be heavy. If you want to store other foods, be sure to thoroughly clean to remove the smell before storing other foods. The method to remove the fishy smell is generally vinegar: after the aquatic products are out of the warehouse, the ice cream on the evaporator is cleaned up, and the cold storage temperature is kept below 5℃. The vinegar is sprayed into the storage with a sprayer, and then the storage door is closed, and the blower is started off and on, so that the vinegar volatilizes and flows in the storage, and the fishy smell can be absorbed. Generally after 4 to 24 hours of wind, you can open the door, at this time and then a few hours of continuous wind can blow away the vinegar taste, cold storage can be used to store other food.