First, the cold storage of mold sterilization and disinfection cold storage of cold cooking materials and foods contain a certain amount of fat, protein and starch. The presence of these nutrients can cause mold and bacteria to multiply and grow. In order to do a good job in cold and hygienic treatment and to ensure the quality of food and cooking materials, it is necessary to carry out cold and hygienic disinfection work regularly. For the sterilization and disinfection of cold storage, acid disinfectant can be used first. The bactericidal action of acid disinfectants is mainly the protein in the coagulated cells. Common disinfectants are lactic acid, peroxy phthalic acid, bleaching powder, formalin and the like.
Second, the method of eliminating odor in the cold storage 1, the cause of odor in the cold storage, the so-called odor, that is, the cooking materials and food in the cold storage under the influence of external factors, through the change of physical and chemical, produce an abnormal smell, Tianyong Over time, this smell adheres to the walls, ceilings, and equipment and tools of the cold storage. There is a odor in the cold storage. Generally speaking, there are several reasons: the cold storage has an odor before it enters the food. Before entering the cold storage, the food has spoilage and deterioration, such as spoiled eggs, meat, fish and so on. Store the cold storage of fish, store meat, eggs, fruits and vegetables without washing, causing negative odor infection and deterioration. The cold storage is not smooth, the temperature and humidity are too large, causing the mold to multiply and produce a mildew smell. The leakage of the cold storage refrigeration pipe and the corrosion of the refrigerant (ammonia) into the food cause odor. The temperature in the cold storage does not drop, causing the meat to deteriorate and produce spoilage. This situation often occurs when fresh meat is not frozen, frozen, or transferred to the warehouse. Foods with different odors exist in a cold storage warehouse, causing food odors to infect each other.
2, to prevent the cold storage odor caused by the method into the cold storage cold food, must be tested, no deterioration can be put into the stock. Cold storage warehouses must not have odors before they are purchased. If there is any odor, it must be treated with technology to eliminate the odor before use. It is usually necessary to strengthen the maintenance of cold hiding equipment, and it is strictly forbidden to dump the unloading goods to prevent the pipeline from being damaged and the refrigerant to leak. During the cold processing of food, the cold storage warehouse must be kept at a certain temperature, and the frozen food should not be transferred or stored. If the temperature of the cold storage warehouse does not drop, you should find the reason and wait for the food processing. Do not mix and store foods that are infected with each other in the cold storage.
3, cold storage method to eliminate odors ozone method. Ozone has a strong oxidation effect, which not only eliminates the odor of the cold storage warehouse, but also stops the growth of microorganisms. The use of an ozone generator can eliminate the odor of the warehouse. If the food containing more fat is stored in the cold storage, it is not suitable to use ozone treatment to avoid acid oxidation and rancidity. Formaldehyde method. The goods in the cold storage warehouse were carried out, and the 2% formaldehyde aqueous solution (ie, formalin solution) was used for disinfection and odor removal. Vinegar method. The cold storage warehouse with fish is very heavy. It is not advisable to install other foods, and it is necessary to thoroughly clean and remove the fishy smell before loading other foods. The general method of removing the smell of fish is to use vinegar. The specific method is as follows: after the fish is out of the cold storage, the frost layer on the evaporation tube group is cleaned, and the temperature of the warehouse is kept below 50 ° C, and then the volume of the vinegar is 50-100 g per cubic meter of the cold storage warehouse. The sprayer sprays into the warehouse, firstly closes the warehouse door tightly, and starts the blower intermittently, so that the vinegar volatilizes and moves in the warehouse, so that the vinegar absorbs the fishy smell in a large amount. Generally, after about 4-24 hours, the cold storage door is opened, and the vinegar taste can be blown out of the warehouse after continuous blasting for several hours.
Maintenance of cold storage 1. Once the cold storage is installed or used again after long-term deactivation, the speed of cooling should be fair: it should be controlled at 8-10 °C every day, and should be kept at 0 °C for a while.
Second, cold storage library board maintenance, pay attention to the use of hard objects to the collision and scratching of the library. Because it can cause the depression and rust of the library board, it will seriously reduce the local insulation performance of the library.
Third, the cold storage seal parts maintenance, because the assembly type cold storage is made up of several pieces of insulation board, there is a certain gap between the boards, these gaps will be sealed with sealant during construction to prevent air and moisture from entering. Therefore, some parts of the seal failure are repaired in time.
Fourth, the cold storage ground maintenance, the general use of small-scale assembly cold storage floor insulation board, the use of cold storage should prevent the ground from storing a lot of ice and water, if there is ice, do not use hard objects to knock when cleaning, damage the ground.
Second, the method of eliminating odor in the cold storage 1, the cause of odor in the cold storage, the so-called odor, that is, the cooking materials and food in the cold storage under the influence of external factors, through the change of physical and chemical, produce an abnormal smell, Tianyong Over time, this smell adheres to the walls, ceilings, and equipment and tools of the cold storage. There is a odor in the cold storage. Generally speaking, there are several reasons: the cold storage has an odor before it enters the food. Before entering the cold storage, the food has spoilage and deterioration, such as spoiled eggs, meat, fish and so on. Store the cold storage of fish, store meat, eggs, fruits and vegetables without washing, causing negative odor infection and deterioration. The cold storage is not smooth, the temperature and humidity are too large, causing the mold to multiply and produce a mildew smell. The leakage of the cold storage refrigeration pipe and the corrosion of the refrigerant (ammonia) into the food cause odor. The temperature in the cold storage does not drop, causing the meat to deteriorate and produce spoilage. This situation often occurs when fresh meat is not frozen, frozen, or transferred to the warehouse. Foods with different odors exist in a cold storage warehouse, causing food odors to infect each other.
2, to prevent the cold storage odor caused by the method into the cold storage cold food, must be tested, no deterioration can be put into the stock. Cold storage warehouses must not have odors before they are purchased. If there is any odor, it must be treated with technology to eliminate the odor before use. It is usually necessary to strengthen the maintenance of cold hiding equipment, and it is strictly forbidden to dump the unloading goods to prevent the pipeline from being damaged and the refrigerant to leak. During the cold processing of food, the cold storage warehouse must be kept at a certain temperature, and the frozen food should not be transferred or stored. If the temperature of the cold storage warehouse does not drop, you should find the reason and wait for the food processing. Do not mix and store foods that are infected with each other in the cold storage.
3, cold storage method to eliminate odors ozone method. Ozone has a strong oxidation effect, which not only eliminates the odor of the cold storage warehouse, but also stops the growth of microorganisms. The use of an ozone generator can eliminate the odor of the warehouse. If the food containing more fat is stored in the cold storage, it is not suitable to use ozone treatment to avoid acid oxidation and rancidity. Formaldehyde method. The goods in the cold storage warehouse were carried out, and the 2% formaldehyde aqueous solution (ie, formalin solution) was used for disinfection and odor removal. Vinegar method. The cold storage warehouse with fish is very heavy. It is not advisable to install other foods, and it is necessary to thoroughly clean and remove the fishy smell before loading other foods. The general method of removing the smell of fish is to use vinegar. The specific method is as follows: after the fish is out of the cold storage, the frost layer on the evaporation tube group is cleaned, and the temperature of the warehouse is kept below 50 ° C, and then the volume of the vinegar is 50-100 g per cubic meter of the cold storage warehouse. The sprayer sprays into the warehouse, firstly closes the warehouse door tightly, and starts the blower intermittently, so that the vinegar volatilizes and moves in the warehouse, so that the vinegar absorbs the fishy smell in a large amount. Generally, after about 4-24 hours, the cold storage door is opened, and the vinegar taste can be blown out of the warehouse after continuous blasting for several hours.
Maintenance of cold storage 1. Once the cold storage is installed or used again after long-term deactivation, the speed of cooling should be fair: it should be controlled at 8-10 °C every day, and should be kept at 0 °C for a while.
Second, cold storage library board maintenance, pay attention to the use of hard objects to the collision and scratching of the library. Because it can cause the depression and rust of the library board, it will seriously reduce the local insulation performance of the library.
Third, the cold storage seal parts maintenance, because the assembly type cold storage is made up of several pieces of insulation board, there is a certain gap between the boards, these gaps will be sealed with sealant during construction to prevent air and moisture from entering. Therefore, some parts of the seal failure are repaired in time.
Fourth, the cold storage ground maintenance, the general use of small-scale assembly cold storage floor insulation board, the use of cold storage should prevent the ground from storing a lot of ice and water, if there is ice, do not use hard objects to knock when cleaning, damage the ground.
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