Egg storage cold storage technology

Egg storage cold storage technology

Egg storage cold storage technology:

The high temperature in summer directly affects the quality of the eggs, while the storage of eggs in the fresh-keeping cold storage allows the eggs to maintain their original quality for a long time. Fresh-keeping cold storage of eggs mainly uses the principle of low temperature to delay the protein decomposition of the egg itself (everyone knows that the protein content in the egg is very high), inhibiting the growth and reproduction of microorganisms, thereby achieving long-term preservation.

In order to store the eggs in the fresh-keeping cold storage for a long time, it is necessary to manage the eggs in the middle and late period before storage. In fact, the cold storage of eggs is simple to operate, easy to manage, and has a good storage effect. The egg can still be kept fresh for more than half a year.

The main points of refrigeration technology for egg fresh-keeping cold storage are as follows:

First, the preparation of eggs before storage in cold storage

1. Fresh-keeping cold storage Before the eggs are stored in the warehouse, the fresh-keeping cold storage must be cleaned first, and ventilation should be carried out. In order to kill the residual microorganisms in the cold storage, the cold storage must be disinfected.

2. Choose a good layer of chicken into the fresh-keeping cold storage, be sure to pick out damaged, cracked or inferior eggs such as rain, shaped, to avoid contamination of other eggs.

3. Eggs into the fresh-keeping cold storage need to be dry, clean, complete and strong, no odor, can prevent eggs from contaminating the mold, lightly loaded.

4. The selected eggs should be pre-cooled before entering the storage and storage cold storage. It is important to avoid placing the eggs with higher temperature directly into the fresh-keeping cold storage, otherwise the temperature inside the fresh-keeping cold storage will rise, so that the water vapor will form water drops on the egg table, which will cause the eggs to grow moldy; The inside of the egg is liquid. If it is suddenly cold, the contents of the egg are easy to shrink, and the egg shell has many micropores. The outside microorganisms and water easily enter the egg, which affects the quality of the egg. Pre-cooling of eggs: First, pre-cooling in the cold storage hall and aisle, cooling 1 °C every 1--2h, the eggs themselves are stored in the fresh-keeping cold storage when they are lowered to 1--2 °C; in addition, pre-cooling is installed near the fresh-keeping cold storage. Cold storage, pre-cooling cold storage temperature is designed to be 0--2 ° C, relative humidity is 75% - 85%, pre-cooling time is generally 20--40 h, and egg temperature is reduced to 2--3 ° C and then transferred to fresh-keeping Cold storage fresh cold storage.

Second, the technical management of egg fresh-keeping cold storage :

1. In order to improve the ventilation of the egg fresh-keeping cold storage, evenly cool the temperature inside the fresh-keeping cold storage, the space between the eggs must be kept in a suitable space, and must be first-in-first-out; if it is stored for a long time and stored for a short time, that is long Eggs stored in time must be placed in the middle for handling. The eggs stored in the egg storage cold storage should be indicated in the storage date, quantity, type, and origin of the cold storage, as well as the storage temperature.

2. Controlling the temperature and humidity in the fresh-keeping cold storage is the key to ensuring the preservation effect of the eggs. The relative temperature of the relative storage of the egg storage fresh-keeping cold storage is -2--1 ° C, and the relative humidity is 85%--90%. In this case, the eggs can be stored fresh for 6-8 months. When the eggs are kept fresh and stored, the temperature of the fresh-keeping cold storage should be stable and uniform, and there should be no situation of high and low. The temperature difference within the fresh-keeping cold storage within 24 hours should not exceed 0.5 °C, otherwise the quality of the eggs will be directly affected. In the fresh-keeping cold storage, it is necessary to change the fresh air at the time when the natural temperature is lower at night to eliminate the dirty gas.

3. The egg out of the warehouse is also a key. The eggs stored in the fresh-keeping cold storage must be slowly warmed up before they leave the warehouse. The eggs on the cold storage can be suddenly heated, and the surface of the egg shell will condense with a layer of water droplets. Damaged, this will infect microorganisms, thus accelerating the deterioration of eggs outside the library. The warming up of the eggs can be set up in the warming room. It can also be carried out in the cold storage hall and the aisle. The temperature rises by 1 °C every 2--3h. When the temperature of the egg is lower than the external temperature by 3--5 °C, the temperature rises. You can end up selling fresh-keeping cold storage.