The secret of vegetable preservation in supermarkets - ultrasonic humidifier

　　The weather has become hot these days, and when I buy food in the morning, it becomes dry in the afternoon, especially all kinds of vegetables, which dry quickly and are easily spoiled. It is necessary to remove the dry part, but for the supermarket, this will cause great losses. The main reason why vegetables are not fresh is that high temperature will accelerate the evaporation of water in vegetables, and it will also lead to faster respiration of vegetables, so the water in the body will continue to decrease, so the vegetables will be dry and not fresh.

　　In the natural environment, in order to maintain the freshness of vegetables and fruits, supermarkets have adopted new preservation methods such as freezing preservation, vacuum packaging preservation, and spray preservation. Cold storage is the preservation of vegetables in the form of refrigeration, which can be replaced by storage, but this method is generally used to store high-priced foods such as meat and seafood. Due to limited space, a large number of fresh vegetables are not stored properly. It is not very cost-effective for supermarkets because it consumes a lot of electricity every day.

　　The second is plastic bags, which is a very good method and works well, but there is still a big problem, that is, the vegetables stored in a plastic bag are limited, and it needs to be manually sorted and weighed when loading. , bagging, and labor costs are high. Moreover, for Chinese customers, vegetables in plastic bags cannot be selected, which will affect the customer's selection experience and even cause controversy. Therefore, this method can only be used for some relatively expensive and fragile ingredients, such as various edible fungi, fruits, etc., while plastic bags are still a kind of white garbage, which is difficult to degrade, so it is better to use less.

　　The third is spray preservation. Many vegetables are fresh and suitable for the natural environment. It is a very suitable method. It is not only convenient and simple, but also sprayed into small particles through ultrasonic waves and sprayed on the surface of the vegetables, so that the humidity of the storage environment of fruits and vegetables is higher. The advantage is to reduce The temperature of the vegetable rack can inhibit the respiration of vegetables, and at the same time, it can supplement the water loss of vegetables, reduce the speed of water loss of vegetables, prevent vegetables from dehydration, keep fruits and vegetables fresh, and achieve the purpose of extending the storage time of fruits and vegetables.

　　Therefore, in the current supermarket, the preservation of vegetables and fruits is maintained by ultrasonic humidifiers, which are very effective. Even if vegetables and fruits are not sold today, the freshness is still very high the next day. It is important to know that freshness preservation is very important for fruits and vegetables. Using an ultrasonic humidifier to maintain the moisture content of fruits and vegetables, control evaporation, reduce moisture loss, can better maintain the freshness state, and greatly reduce the economic loss caused by moisture loss during weightlessness. It has been widely adopted and used by major supermarkets and stores, and has been well received.

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