How do you preserve walnuts in large quantities? How walnuts are preserved

Walnut storage The sun-dried walnuts are packed into cloth bags, sacks or baskets, placed in a ventilated, dry, cool, rat-free, pest-free room, and the optimal temperature for indoor storage of walnuts is 1-2, generally not more than 8, and the relative temperature is 75-80

Ditch storage method: dig a ditch with a depth of 1 meter, a width of 1 meter, and a length with the amount of storage in a high-dry, well-drained, shady and wind-sheltered place. At the bottom of the ditch, a layer of 10 cm thick clean wet sand is laid, and the humidity of the sand is measured by kneading it into a ball by hand but not producing water.

Then spread a layer of walnut and a layer of sand, and fill it with wet sand between the ditch wall and the walnut, leaving no gap. When it is about 20 cm away from the mouth of the ditch, the wet sand is covered with the ground level, and the soil on the sand is ridge-shaped, and its span is greater than the width. Drains are opened around the ditch to avoid rainwater infiltrating too much, resulting in excessive humidity and walnut mold.

When the length of the ditch is more than 2 meters, a handful of tightly tied straw should be erected every 2 meters for aeration when storing walnuts, and the height of the straw should be exposed to the "roof ridge".

2. Sand storage method: on the ground in the shaded room, first lay a layer of sterilized straw, wheat straw, etc., then spread a layer of 10 cm thick wet sand, put a layer of walnuts and a layer of sand, the height of the pile is not more than 1 meter, and the thickness of the top wet sand layer is 20-30 cm. Keep the top layer of sand moist during storage.

1. Store walnuts at room temperature.

Walnuts stored at room temperature can be divided into dry storage and wet storage.

1) Dry storage: The walnuts that have been removed from the green skin are placed in a dry and ventilated place to dry, and dried until the diaphragm of the nut is broken, the seed coat and the kernel are not easy to separate, and the color of the kernel is consistent inside and outside, and then it can be stored. Put the dried walnuts in a sack and place them in a room that is ventilated, cool, and not directly exposed to high pressure by light.

During storage, it is necessary to prevent the occurrence of rodent infestation, mildew and heat.

2) Wet storage: dig a ditch with a depth of 1 meter, a width of 1 meter, a length and a storage capacity in a high-dry, well-drained and sheltered place. At the bottom of the ditch, a layer of clean wet sand about 10 cm thick is laid, and the humidity of the sand is kneaded by hand into a concord but no water is produced.

Then a layer of walnuts and a layer of sand are paved, and the ditch wall and the walnuts are filled with wet sand, leaving no gaps. When it is spread to about 20 cm away from the mouth of the ditch, then cover the wet sand and the ground is flat, and the soil on the sand is ridge-shaped, and its span is greater than the width of the ditch. Open drainage ditches around the ditch to avoid rainwater infiltrating too much, resulting in too high humidity and easy to make walnuts mildew.

When the length of the ditch is more than 2 meters, a handful of tightly tied straw should be erected every 2 meters for ventilation holes when storing walnuts, and the height of the straw should be exposed to the "roof ridge". The thickness of the soil on the "ridge" varies with the weather, and it should be thicker in cold areas in winter.

2. Store walnuts in plastic film tents or bags.

The walnuts harvested and processed in a timely manner are bagged and stacked into stacks, stored in a low-temperature place and covered with plastic film, and carbon dioxide gas is charged into the tent (nitrogen can also be filled) to reduce oxygen concentration. The content of carbon dioxide in the early stage of storage can be quite high, reaching 50%, and then maintaining about 20% and oxygen at about 2%, which can prevent seed kernel fat and oxidative deterioration, avoid flavor failure and reduce quality, and can play a role in preventing fruit mildew and insects. The use of plastic tents should be used for storage in the cold and dry seasons to keep the humidity in the tents low.

In the south, in late autumn and early winter, the temperature is still high and the air humidity is also high. After the walnuts are harvested, they can be stored in the account. Pay attention to adding moisture absorbers and lowering the temperature. It is best to store large tents in ventilated or cold storage.

Packed in polyethylene film bags, sealed, and stored at 0-1, the storage effect is quite good.

Storing walnuts in a lead-lined storage box can reduce the contact between walnuts and air.

touch, avoid moisture return; If the amount of walnuts is small and the lead skin cannot be found for a while, if a ceramic container is used.

It is also very effective for airtight storage.

Life knowledge is clear: when picking walnuts, it is best to choose the ones with thin shells. Concave on the walnut shell.

The more marks, the larger and rougher they are, the thinner the walnut shell; Conversely, the fewer dents in the shell, the smaller the nucleus.

The thicker the peach shell. At the same time, the thinner the shell, the more muffled the sound of the walnut when stirred, and the thicker the shell.

The more crisp the sound, if the walnut lands from a certain height, the thin-shelled walnut will not.

and the voice is muffled; In addition, authentic Yunnan paper-bark walnuts can generally be pinched by hand.

so that it can effectively and quickly dissipate and absorb moisture and moisture, so as to be better.

Maintain the dryness of walnuts to prevent them from resurging and mildew; Large quantities of loose walnuts need to be stored for a long time.

It is best to use sacks, otherwise the walnuts with insufficient dryness will be moldy, oily, black and spoiled within a month.

The storage of kitchen items should avoid all aspects: when storing walnuts, they should be placed in a ventilated place; Fear.

It should be packed in a sealed bag, or a cloth bag, a sack or other bag with good ventilation.

The most important thing for walnut storage is temperature and humidity. To put it simply, it is whether it will be exposed to the sun and whether the storage place is too humid.

In summer, because the indoor temperature is already very high, if you buy it before the Chinese New Year, then it has been stored for a period of time, and in the summer, it is recommended to put it in the refrigerator, because if you buy raw walnuts (that is, the original flavor that is generally sold outside, not fried), its shelf life is at most one year, and it is impossible to have a longer shelf life, so you must grasp this time.

If you buy it in the summer, you can only keep it in the refrigerator at home, because raw walnuts and other pistachios. There is a difference between almonds, and those bought outside are processed a lot, and some even have additives or the like, so I don't need to talk about the expiration date.

After drying, it is safest to store it in a plastic bag and store it in cold storage.

Large-scale preservation of walnuts can only be done by building a room temperature cold storage so that walnuts do not grow worms in May and June! Don't be bad! There is no other way.

Keep in cool. Dry place. The weather is better and more sunny.

Hello dear and happy to answer your questions!

Here is a query for you how to store walnuts in the way of preservation: 1. Ventilation and drying.

Walnuts are dried fruits, so they need to be kept dry at all times. 2. Put it in a bag with a ventilation permit.

If the environment of walnuts is dry and ventilated, the storage environment of walnuts may be moist and closed with bags with poor ventilation, which is not conducive to the long-term storage of walnuts and the taste will be affected. 3. Keep it in its entirety.

If there are cracks in the walnut shell or the shell is peeled off, the walnut kernels inside will be directly exposed to the air, so that the shelf life of the walnut will be greatly shortened, and the taste will be worse when eating. 2. Do not seal.

When storing walnuts, they should be placed in a bag with good ventilation and not sealed. Ventilation can disperse the moisture around the walnut to avoid the resurgence of moisture and toxic deterioration of the walnut. 3. Do not peel the shell and store it.

Protecting the walnut kernels with a shell can reduce contact with the outside air, which is more conducive to maintaining dryness and freshness, and will also make the walnut have a longer shelf life.

1. Refrigerate the dried walnuts and fruits, which can be shelved for 10 months.

2. The shelf life of green walnuts is 1 month.

3. Fresh fruit walnuts are wet walnuts, and the shelf life is only 15 days.

4. The shelf life of walnut kernels alone is 6 months.

5. The shelf life of walnut oil is about 3 months.

6. The shelf life of refined walnut oil is about one year.

1. First of all, try to put it in a ventilated and breathable place, do not use sealed bags, and it is best to use cloth bags, sacks or other bags with good ventilation.

2. Secondly, the purpose of using bags with better ventilation is to prevent the dryness of walnuts from being enough, and use bags with better ventilation to effectively and quickly dissipate and absorb moisture and moisture, so as to better maintain the thousand degrees of walnuts and prevent them from resurging and mold.

3. Finally, it is recommended that walnuts should not be peeled and stored for a long time with the shell.

Note: can not be placed in the refrigerator, the refrigerator is more humid, not good storage is easy to poison, when there is the sun can be taken out to dry, but do not expose to the sun, walnuts are easy to produce oil. I hope this reply is helpful to you, if you have any questions, please feel free to consult, and finally wish you a happy life!

Pleasant].

How to preserve walnuts Sealing preservation method: Take a plastic bag with strong sealing, 2 put the walnuts in, and then press out all the air as much as possible, tie it tightly and preserve.

Refrigerated storage method: Set the temperature of the refrigerator at about 5, and put the walnuts that have been packed in the bag into the refrigerator for storage.

Dry preservation method: Put the packaged walnuts in a dry environment such as a cellar to keep them ventilated and dry.

Suitable environmental conditions for walnut storage: temperature 5, air relative humidity 50%-60%.

Storage and preservation technology: 1

Wet storage. Dig a ditch with a depth of 1 meter, a width of 1 meter and a meter in a shaded and sheltered place with high and dry terrain, good drainage, and the length depends on the storage capacity. At the bottom of the ditch, a layer of 10 cm thick clean wet sand is spread, and the humidity of the sand is kneaded into a ball by hand but does not produce water.

Then spread 1 layer of walnuts and 1 layer of sand, and fill the ditch wall with wet sand between the walnuts. When it is 20 cm away from the mouth of the ditch, cover it with wet sand and level with the ground. The soil on the sand is ridge-shaped, and its span is greater than the width of the ditch.

Drains are opened around the ditch. When the length of the ditch is more than 2 meters, when storing walnuts, a tightly tied straw should be erected every 2 meters as a ventilation hole, and the height of the straw should be exposed to the "roof ridge". In winter, the soil on the ridge of the roof should be thicker.

2.Dry Tibetan method. The walnut with the green skin removed is placed in a dry and ventilated place to dry until the diaphragm of the nut is broken, the seed coat and the kernel are not easy to separate, and the color of the kernel is consistent inside and outside when it is stored. Put the walnuts in a sack and place them in a ventilated, shady room.

During storage, it should be protected from rodent infestation, mildew and heat. 3.

Plastic film packaging and storage method. After the walnuts are bagged, they are stacked into stacks, covered with plastic film under 0-1, and carbon dioxide or nitrogen is filled into the tent. In the early stage of storage, the aeration concentration should reach 50%, and then the carbon dioxide should be kept at 20%, and the oxygen should be kept at 2%, which can not only prevent the oxidation and deterioration of kernel fat, but also prevent walnut mold.

1. First of all, we can remove a layer of green skin on the outside of the walnut, put the walnut in a cool, ventilated and dry place, dry it and then put it in a ventilated place for preservation, do not put it in a plastic bag, you can put it in a burlap bag or sandbag, you can put it in after cleaning it, and then put it in a ventilated place, when preserving walnuts, it must be placed in a cool, dry and ventilated place, and it is also necessary to prevent some insect pests or mice. In addition, we can also choose the practice of wet storage to preserve walnut kernels, we can dig a one-meter-long and wide hole in the ground, and then take some clean gauze and spread it on it, put the walnut kernels in it, and then wrap it with gauze to keep it ventilated.

2. Walnuts as a dried fruit type of food, if not stored properly, it may cause oxygen oxidation of walnuts, resulting in mold, we can also choose to put walnuts in a plastic bag, and then let the plastic bag bulge and fill it with some carbon dioxide, so that the concentration of oxygen in the poetry can be stored for a very long time in a low temperature environment, and we can also put walnuts in the refrigerator for cold storage, because now it is a very common thing to put food in the refrigerator, We put the walnuts in a burlap bag and put them in the freezer compartment of the refrigerator so that they can be kept for a very long time.

Walnuts are preserved by:

Walnuts are dried fruits, so they need to be kept dry at all times. First of all, you should try to put walnuts in a ventilated place, do not use sealed bags, it is best to use cloth bags, sacks or other bags with good ventilation. Secondly, the purpose of using bags with better ventilation is to use bags with better ventilation to effectively and quickly dissipate and absorb moisture and moisture when the dryness of walnuts is not enough, so as to maintain the dryness of walnuts and prevent them from regaining moisture and mildew.

Finally, it is recommended to store walnuts intact as they are stored longer in shell. If there is a crack in the walnut shell or the shell is peeled off, the walnut kernel inside will be directly exposed to the air, so that the shelf life of the walnut will be greatly shortened, and the taste will be worse when eaten.

Types of walnuts

1. Autumn walnut: a wild walnut, mainly produced in the Northeast. It is characterized by the presence of a distinct six-piece flute. It is mainly used for low-end walnuts, which are not high, but they are also slightly more expensive than edible.

2. Hemp walnut: semi-wild walnut, mainly in Shanxi and Hebei in North China. There are many specific varieties, and they are the main walnut varieties.

3. Iron walnut: The walnut varieties in the south, the surface is similar to the peanut skin-like texture, which is a small pit and a pattern composed of a small pit and a careful beat, this is estimated to be the kind you buy, and profiteers use this to pass off, because the skin thickness is heavy pressure scale, and the shape is close to the edible variety. There are also profiteers who mix a small amount of this in the edible variety, so be careful.

A large one in good condition is used for low-end walnuts, and a small one is basically used to make a fire.

4. Cotton walnut is an edible variety, with thin skin, large kernel, flat surface, and very shallow texture.