Several ways to remove mildew from cold storage, collect them!

Several ways to remove mildew from cold storage, collect them!

Mold generally grows in dark and humid places and can adapt to lower temperatures. Usually in high temperature storage, the situation is the most serious. Mold grows in the cold storage, and the spores will fly everywhere, which will contaminate the goods and products stored in the storage. The mold itself is harmless and does not produce toxins, but if the mold grows, the appearance of the product will be greatly reduced, and it will promote the rot of the meat. Therefore, the work of removing mildew has always been valued by people, but although there are many existing methods for removing mildew, they are not convenient to implement. Still need to continue to study and improve.

Several ways to remove mildew from cold storage, collect them!

　　 There are three main types of mold removal methods, namely: mechanical mold removal, physical mold removal and chemical mold removal.

　　 1. Mechanical mold removal method:

　　 is the part that performs cleaning and eradication of mold. It is also combined with other mold removal methods. There is an air washing method in the mechanical mold removal method, which is to install a water sprayer at the air inlet, and the air passes through the water to wash the mold spores when circulating. This method is like the current wet air cooler. , Can play a role in reducing mold.

　　 2. Physical removal of mildew:

　　 is the use of physical means such as temperature, humidity, ultraviolet light, high-frequency electricity, and copper wire mesh filters to remove mold. The temperature of mold growth is generally between -6°C and 40°C. For this reason, mold growth is rarely seen in low temperature storage, and hot alkaline water can also be used to kill mold on tools and equipment. The growth of mold is closely related to temperature, so temperature control can only be used appropriately. Using ultraviolet light to remove mildew is a better method, it can not only sterilize, but also remove mildew, but also has some deodorant effects. But this can only work on the directly irradiated part. Generally, 0.33 to 3 watts of ultraviolet light is used per cubic meter. Irradiation on an area of ​​2 meters away for 6 hours can kill microorganisms. But the effect of ultraviolet light is affected by temperature and humidity. The closer to the normal temperature of microbial growth, the higher the humidity, the stronger the ability to sterilize and remove mildew. Ultraviolet light can promote the oxidation of fat, so be careful when using it. The copper wire mesh filter is equipped with a copper wire mesh at the upwind, which can kill part of the mold.

　　 Third, chemical mold removal method: commonly used are lactic acid, carbon dioxide, ozone, formaldehyde, bleaching powder, sodium fluoride, sodium hydroxybiphenol and so on.

　　 1. Lactic acid method: is a reliable disinfection method, it can remove mildew, sterilization, and deodorization. The method of use is to clean up the warehouse first, use 1 ml of crude lactic acid per cubic meter, add 1 to 2 parts of water to each part of lactic acid, put the mixture in an enamel basin, and place it on an electric stove to heat and evaporate. General requirements Control the liquid medicine to evaporate in about half an hour to 3 hours. Then turn off the electric furnace and seal the Kumen for about 6 to 24 hours so that the lactic acid can fully interact with bacteria or molds in order to achieve the purpose of disinfection. It has been proved by the experiment of the "Experimental Team of Mould and Virus Removal" of the Meat Company of Hunan Province Commerce Bureau Lactic acid disinfectant is one milliliter per cubic meter, which has a certain effect on removing mold and sterilizing warehouses. After disinfection, bacteria in warehouses are reduced by 70%, and molds are reduced by 70%.

　　2. Carbon dioxide method: It can't kill mold at any concentration, it can only delay the growth of mold. When the concentration of carbon dioxide in indoor air reaches 40% at 0°C, the growth of mold can be completely prevented. However, when its concentration in the air exceeds 20%, the meat becomes discolored due to the formation of denatured hemoglobin. It is generally believed that when the indoor carbon dioxide concentration is 10% at 0°C, the shelf life of chilled meat in the cold storage room can be extended to more than double.

　　3. Ozone method: It is a better method, it can sterilize and remove mildew and odor. In this way, an ozone generator should be used to crack two atoms of oxygen in the air into two atoms of ozone. The ozone formed is injected into the cold storage, and its concentration is about 1 to 3 mg/m3. However, ozone is a strong oxidant, which can fade lean meat and oxidize fat. At the same time, ozone is irritating to human mucosa, so care should be taken when using it.

　　4. Formaldehyde method: Formalin steam method. This method can detoxify and sterilize, but formalin smells so great that if it is absorbed by meat, it cannot be eaten. At the same time, formalin is very irritating to humans, so pay attention to safety when using it. Use this method to empty the library first, clean it up, generally use 15 ml of formalin per cubic meter. There are two ways to turn formalin into steam: one is to put formalin in a closed barrel with a pipe into the cold storage, and then burn it with fire; the other is to put formalin in an open barrel Put it in the cold storage, the operator will put in an appropriate amount of potassium permanganate or quicklime, and then add some water, when the gas is generated, the personnel go out and close the door. After a few hours of formalin steam sterilization, ammonia water is placed in the room to absorb the smell of formalin, and it is completed after ventilation and sterilization.

　　 5. Bleaching powder method: It is scrubbed with 4% bleaching powder solution, which has good disinfection effect. If adding 7 parts of caustic soda to 5 parts of bleaching powder is better, disinfect for a few hours for ventilation and exhaust.

　　6. ​​Sodium fluoride method: The wall is painted with a mixture of 2% sodium fluoride and 20% kaolin, which can be mold-free for 1 to 2 years at 0°C.

　　7. Sodium hydroxybiphenol method: Use 2% sodium hydroxybiphenol solution to brush and remove mold. This method does not allow the smell to be passed on to the meat and it will not corrode the utensils, but protective measures must be taken when painting.