How to keep corn fresh in cold storage, and how to preserve fresh corn in cold storage?

Ears of corn are stored in special silos. There are two types of container shapes: rectangular and round. The rectangular description of the bottom of the warehouse is cushioned with meters, the length depends on the terrain, the width is not more than 2 meters, and it is made of wooden poles or sorghum straw.

Dry corn kernels can be placed in the warehouse for bulk storage or storage, and the pile height should be 2 3 meters. Generally, the moisture content of corn is less than 13%, and the grain temperature does not exceed 30. If new corn kernels are stored in the warehouse, they can be ventilated and turned over for about 1 month in the warehouse or during the autumn and winter delivery seasons to dissipate damp heat and prevent "sweating".

The suitable harvest period for summer maize is from the end of September to the beginning of October. When the bract leaves are dry, the milk line of the grain disappears, the black layer appears and the water content is less than 32%, mechanical harvesting is selected, and the straw is crushed and returned to the field to fertilize the soil. A large number of practices have proved that late harvest of corn can increase the yield by 750-1500kg hm2, and the 1000-grain weight can increase by more than 15%.

When the moisture content of the grain is less than 14%, choose a dry and ventilated site for storage.

First of all, the husk of the corn must not be peeled, and the fresh corn should keep a lot of moisture in it. Put it in a box and put it in the fresh cold storage to keep the corn fresh by cooling it down and stopping it from breathing.

In order to prevent the respiration of the corn, it can also be properly filled with carbon dioxide.

Rice is nutritious and delicious. How to keep corn fresh and store it for a long time? The easiest way is to freeze raw corn, which not only does not spoil but also does not easily lose nutrients.

When raw corn is preserved, the thick skin of the outer layer of corn should be peeled off first, leaving only two or three layers of inner skin, which can be stored directly in a fresh-keeping bag or plastic bag without cleaning, sealed and put in the refrigerator freezer. In this way, the corn can be stored for half a year without spoiling, and it is always fresh and tender. When you want to eat it, take out the corn, no need to thaw it, wash it and put it in a pot, pour in water, boil it over high heat, and cook it for about 10 minutes.

If you want to preserve cooked corn, you only need to put the cooked corn in a plastic bag, seal the bag tightly and put it in the freezer compartment of the refrigerator, and it can be stored for a week. If you only put it in the refrigerator, it is easy to spoil, because corn has a high sugar content, so it needs to be stored at a low temperature.

Summary. Hello! Pro-cold storage fresh corn storage and preservation method:

1. Fresh corn must be refrigerated under the condition of 0 1, and generally fresh corn can be packed with bracts and leaves in boxes or net bags into cold storage after pre-cooling, and then refrigerated. Better yet, the bracts and stalks are removed after pre-cooling (the bracts and stalks will absorb water from the corn), then packed in perforated moisture-permeable film, and then packed in boxes and stacked or racked in cold storage. Keep the storage temperature at 0 1 and the relative humidity 95%-98%.

2. Fresh corn is not easy to be stored for a long time, and can only be stored for a short time in the peak harvest season. The main measures to control the change of fresh corn are to reduce the temperature of the storage environment, quickly cool down after harvest to remove the heat in the field, and store it under low temperature conditions.

3. Timely harvesting plays a very important role in ensuring the quality of fresh corn and prolonging the storage period. Different corn varieties, different climatic conditions and different cultivation techniques, the harvest period of fresh corn cob is different, and the sugar content of ordinary fresh corn is higher in 23-25 days, and the taste is good, which is the best harvest period. Sweet corn should generally be harvested when the filaments are slightly dry, the ears of corn are tightly grasped, the husks are tight, the corn kernels are pressed with fingernails, there is milk outflow, and the taste is sweet.

How to preserve fresh corn in cold storage?

Hello! Pro-cold storage fresh corn storage and preservation methods: 1. Fresh corn must be refrigerated under 0 1 conditions, and generally fresh corn can be packed with bracts and leaves in boxes or net bags into cold storage after pre-cooling, and then refrigerated.

Better yet, the bracts and stalks are removed after pre-cooling (the bracts and stalks will absorb water from the corn), then packed in perforated moisture-permeable film, and then packed in boxes and stacked or racked in cold storage. Keep the storage temperature at 0 1 and the relative humidity 95%-98%. 2. Fresh corn is not easy to be stored for a long time, and can only be stored for a short time in the peak harvest season.

The main measures to control the change of fresh corn are to reduce the temperature of the storage environment, quickly cool down after harvest to remove the heat in the field, and store it under low temperature conditions. 3. Timely harvesting plays a very important role in ensuring the quality of fresh corn and prolonging the storage period. Different corn varieties, different climatic conditions and different cultivation techniques, the harvest period of fresh corn cob is different, and the sugar content of ordinary fresh corn is higher in 23-25 days, and the taste is good, which is the best harvest period.

Sweet corn should generally be harvested when the filaments are slightly dry, the ears of corn are tightly grasped, the husks are tight, the corn kernels are pressed with fingernails, there is milk outflow, and the taste is sweet.

4. Corn harvesting should be carried out in the morning and evening when the temperature is cold. The lower the outside temperature, the less heat in the field, the faster the pre-cooling speed, and the better the quality is maintained.

Preservation method of fresh corn in cold storage: corn harvesting - corn grading and packaging - corn pre-cooling - cold storage cleaning and disinfection - cold storage temperature and humidity management.

Corn harvesting

Corn harvesting should be done in the morning or evening on a sunny day, and avoid harvesting on a rainy day.

Corn should be avoided after harvesting, and should be stored in a ventilated and cool place.

Corn pre-cooledThe temperature of the pre-cooling storage is 0-5, the relative humidity is 85-90%, and the pre-cooling can be put into the storage warehouse after pre-cooling.

Cold storage cleaning and disinfection:Peracetic acid fumigation and disinfection, ozone disinfection, sulfur disinfection, lactic acid disinfection, etc. can be used;

Cold storage temperature and humidity managementPre-cooled corn can be put into the quick-frozen storage, the temperature of the quick-frozen storage is set to -20 -30, frozen for more than 10 hours, and the core temperature can be transferred to the low-temperature storage for storage when the core temperature is controlled at about -18, and this method can make the corn keep fresh for up to 7-8 months. When you want to eat it in winter, you can take it out of the freezer.

This method is suitable for the preservation of large quantities of corn);

During the storage period, regular sampling inspection should be carried out to check whether the fresh corn has disease, cold injury, color change, water loss and decay, and if there is any abnormality, it should be removed in time;

Do a good job of ventilation in the fresh-keeping warehouse: the temperature is low in the morning or evening, and pay attention to avoid rain and fog weather; In the middle and late stages of storage, the number of ventilation can be appropriately reduced, generally once every 10 15 days, or combined with cooling;

Stacking method: Stacking is to put the whole ear of corn with Xun leaves removed into a warehouse or granary that can be ventilated, and then threshing it when it is sold or the next year;

Hanging storage: first tear the bract leaves of corn, then weave them into braids, connect them with ropes or wires, and hang them with rope or wire, the length is determined according to the specific conditions of the site, maintain good ventilation conditions, and avoid being exposed to rain;

Grain storage method: threshing corn, put it into a woven bag, stacking it in the house, keeping a gap, in order to facilitate ventilation, corn kernels should be dried before storage, so that its moisture content does not exceed 13%, and the temperature should be lower than 30.

Before and after the storage of corn, it is necessary to do a good job in the prevention and treatment of insects, rodents, mildew, etc.; Check the humidity and temperature frequently, and if there is a phenomenon of moisture and heat, it is necessary to turn over the warehouse in time to dry;

Fresh corn low-temperature cold storage storage method.

Fresh corn needs to be kept fresh for a long time, and it is generally stored in fresh-keeping cold storage and low-temperature refrigerated cold storage.

The suitable storage temperature of fresh corn cold storage is: 0, relative humidity 95%-98%; The temperature in the cold storage is designed to be -18 and the relative humidity is 95%-98% according to the storage requirements. Of course, it is not directly stored.

The first thing to do is to put the picked corn out of the way to dissipate the heat, or quickly reduce the temperature of the corn to 0 within an hour or two of picking. Corn pre-cooling methods are: water cooling and vacuum pre-cooling.

Vacuum pre-cooling requires humidifying the corn first to avoid dehydration; Cold water pre-cooling is to use 0 -3 water spray, and after pre-cooling, the excess water on the corn bud leaves is shaken dry.

For corn stored in fresh cold storage, the pre-cooled corn should be stripped of the outer buds, leaving only one or two layers of inner skin, and then packed and stacked in the fresh cold storage for storage, and the preservation time is about 1 month.

For the corn stored in the low-temperature cold storage, after picking, the corn whiskers and bracts are removed, the corn with better quality is selected, boiled for about 8 minutes, and then quickly pre-cooled and the excess water is removed, and then it is quick-frozen under -25, and then it is frozen when all the corn is packaged and then moved to the low-temperature cold storage of -18 for freezing, so that the freshness time can be as long as more than half a year.

Corn low-temperature cold storage can also be stored without boiling, directly quick-frozen and refrigerated, but the relative storage time will be shorter, and the corn preservation time of direct quick-freezing and refrigeration is about 3 or 4 months. What kind of method to choose depends on the time when the corn is sold.

Corn frozen corn in low-temperature refrigerator only needs to be boiled for 20 minutes before it can be eaten.

Clause. 1. Vacuum sealed storage.

Corn should not be peeled to lock in moisture and maintain freshness. Find a sealed bag, open it and put it in the corn, leave a small opening, squeeze out the air inside or use a vacuum machine to extract it, seal it immediately and put it in the refrigerator for storage. If you have already peeled it, you can also save it like this.

Clause. 2. Quick-frozen storage with skin.

Don't peel the corn, if there is no sealed bag, find a plastic bag, put it in the refrigerator to freeze it to maintain the freshness of the corn, take it out in advance when you want to eat it, and then peel it for a period of time. Peeled corn can also be stored in this way.

It should be dried first, and there is water vapor when taken out of the cold storage, which is easy to mold.

How to freeze fresh cornMethod 1: Wrap each corn tightly with plastic wrap, so that the corn water will not evaporate and prevent the refrigerator from smelling, and then put it in the refrigerator for freezing.

Method 2: Peel off all the corn leaves, boil in hot water for 3 minutes, put them into a fresh-keeping bag immediately after a little cooling, and then sprinkle a little water on the surface of the corn, tighten the bag mouth and put it in the refrigerator to freeze, the corn preserved by this method tastes the same as fresh, my refrigerator has frozen a lot, last year's corn has not been eaten, this method is told to me by an old farmer. I've tried both methods, and they're both practical, so just choose according to your needs.

Ways to preserve fresh corn in cold storage:

1. Remove the buds of the bent ears of fresh corn and remove the whiskers, then boil in boiling water for eight minutes and blanch, then quickly cool (cool down with ice water or room temperature water) drain the water, put it into -25 for quick freezing, and the freezing time is suitable for the whole corn ear to freeze.

2. Then seal it with composite film packaging (single spike packaging or 2-3 spike packaging), and put it under -18 to freeze ice, and the shelf life of this method can be up to six months.

3. If it is not required to be stored for a long time, it is planned to be sold in 3-4 months, from the perspective of production cost, it can be saved from the blanching procedure and then frozen in the orange hole, and boiled in boiling water for 20 minutes when eating.

1.Freeze in the refrigerator.

Remove the old skin of the outer layer of corn, only leave two or three layers of relatively tender outer skin, do not remove the corn stalks, let alone clean, put them directly in the fresh-keeping bag, seal, and then store them in the freezer in the refrigerator, so that the shelf life of the stored fresh corn will be very long, and it will not deteriorate until the new corn is listed in the second year.

2.Vacuum storage.

The oxygen in the air is isolated from the corn, so as to avoid the burial of germs and bacteria in the air and the contact between the oxygen and the corn, so that the corn can be stored in the real environment. In this way, corn stored in vacuum bags can generally be stored for 30 to 50 days. The cleaner the air is pumped out, the longer it will be stored.

The preservation method of fresh corn in cold storage is general, and fresh corn like this is generally collected. Even its skin is stored in the cold storage.

Dear, I'm glad to answer for you: How to preserve fresh corn in cold storage? Answer; Kiss, put it in the cold storage and seal it with a plastic sealed bag, you can put it for 3-5 months, the fruit talks about the corn for a short time, and the corn can be temporarily stored in 0 5 degrees cold storage, and the ears can not be frozen, which is the general vegetable cold storage requirements, which is only a temporary storage and dust room for a few days of storage and transportation.

If it is stored for a long time and sold out of season, it needs to be blanched and finished (actually cooked) pre-cooled 18 degrees quick-frozen boxing (or bagging) stored at a sub-zero temperature, and then sold in the cold chain. Because the taste of fruit sweet corn is not as good as fresh ears after freezing and then thawing, at present, this quick-freezing processing technology is mostly used in waxy corn, and sweet corn is mostly used in the quick-freezing process of grains, that is, the sweet corn kernels are peeled off with a pelletizer, and then killed, quick-frozen, used for food raw materials (corn ham sausage, canned sweet corn kernels, raw pulp production of corn beverages, etc., there is also a processing method of vacuum packaging of sweet corn whole ears, which belongs to the soft canned products of high temperature sterilization, and the storage temperature requirements are not strict. In short, the high-quality shelf life of fruit sweet corn ears is very short, and there is no particularly ideal direct refrigeration preservation technology that can maintain its sweetness, flavor, peel thickness and taste for a long time.

The above are based on the specification of fresh corn processing requirements, specific technology and operating procedures of the text more, I to cover the noise before the writing of the popular science book "special corn cultivation and comprehensive utilization" (Hubei Science and Technology Press) in the theoretical discussion, but this is a very practical processing project, or need to be familiar with the operation, at present, the domestic processing of fruit corn enterprises and cooperative organizations more, you can find on the Internet and go to learn should be the most reliable. I hope my reply can help you, if you have any follow-up questions, please feel free to ask me, I will reply to you as soon as possible. If you are satisfied, please give a like, thank you.