Walnut is a useful unique product, a storehouse of vitamins, all necessary microelements for the human body. Therefore, it is desirable to save the crop as long as possible. There are some nuances that should be considered when collecting and storing fruits. Store peeled walnuts should be on a different technology than the green or in the shell. The technology includes the presence of a certain illumination, compliance with temperature, humidity, packaging.
When to collect walnuts for storage
Harvest time depends on the degree of ripening. In late August, the first fruits are harvested in green shells. Such a product is kept for two weeks for ripening. Only then it is cleaned, dried and sent for long storage.
If the fruits ripen themselves, then they must be collected after the green shell cracks, when the fruit itself falls to the ground or it can be shaken off. Depending on the variety, it happens in September-October.
Signs of maturation and readiness to harvest:
- yellowing foliage;
- loose outer shell;
- cracking of the shell.
Preparing walnuts for storage at home
Storing walnuts in the shell and in a peeled state requires preliminary preparation. After collecting the fruit must be dried on a flat surface. Otherwise, moisture forms under the shell.
The crop should be examined, bruised, removed, all sick, cracked specimens. If you hear a thud when shaking or the fetus is too light, the inside is dry. Such a product is recyclable and not suitable for long-term storage and transportation.
For the preservation of the treated specimens only healthy ones are chosen, with no signs of rot and mildew. The core should have a uniform color without white spots. Only such fruits after drying should fall into the basement or cellar.
The fruit must be without foreign smell. Signs of mustard are unacceptable.
How to store walnuts
The storage rules depend on the method. The preservation conditions for the fruit peeled and in the shell differ significantly, as well as the shelf life. It is important to harvest in order to preserve it as much as possible. Collection is carried out in dry weather.Attention! When buying, it is better not to purchase a large batch at once, since it is not known how many and under what conditions they were before the sale.
How to store inshell walnuts
If it is correct to comply with all the conditions, the shelf life of the crop in the shell without bitterness is 2 years. To prevent the larvae and harmful insects from appearing under the shell, it is recommended to heat the product in the oven. But this should be done very carefully, so as not to provoke the release of aromatic oils. They will give unpleasant bitterness. Therefore, the minimum temperature is used for calcining the in-shell, and the maximum soaking time is 60 minutes.
When choosing containers for storage should focus on natural material. The best packaging are:
- cardboard box;
- linen bag;
- paper bags;
- wooden barrels and crates;
- potato bags.
In such a container is permissible to store up to 50 kg. Humidity should not exceed 60%, so as not to appear mold. Extreme humidity indicators -70%, at higher values, not only walnut but also other products begin to mold. The room should be dark, dry, with a temperature not higher than + 5 ° C, so as not to appear rancid.
How to keep walnuts peeled
To save the cleaned copies for a long period, you must first sort them. Reject those with mold, cleaned from the remnants of the shell and partitions. Partitions can contribute to the appearance of bitterness in the product. Also, if there are partitions and shells, infection with fungi can occur.
In order for the cleaned crop to be stored longer, only whole specimens should be left. Fractures are susceptible to infection with various diseases that reduce the safety of the product several times.
Before storage, the moved product should be washed under running cold water. Then ignite in the oven at low temperature. Only completely dry kernels should be laid for long-term storage. You can replace the calcination in the oven processing in a griddle. But a low temperature regime is required to comply in any case.
In total there are 3 methods for storing the product without the shell:
- at room temperature at home;
- in a refrigerator;
- in the freezer.
But experts recommend for long-term storage of all the nuts in the shell. This increases the shelf life, less chance of becoming bitter and more opportunities to get all the nutrients.
Where to store walnuts
Storage location also depends on the form. For kernels in the shell cellar or basement is perfect. But it is important that the room was not damp and even the slightest temperature drops. These factors contribute to the occurrence of fungal diseases and mold. You can save the crop at a certain temperature. For in-shell specimens, this temperature is not lower than - 3 ° C.
If you store the cleaned kernels at home in a closet or closet, they are recommended to be searched regularly.
You can store walnuts in the refrigerator, but in this case you will have to control that the temperature does not exceed + 10 ° C. Fruits are wrapped in foil or stored in glass, plastic containers. In order for temperature drops to occur, you need to store the product on the shelf, not on the door.Important! Too long accommodation at low temperatures contributes to the loss of nutrients.
Store walnuts in the apartment can be only in a dark place. It is not recommended to use the balcony, as there may be too low temperatures in winter.
How many walnuts are stored
It is better not to store split or whole nuts for a long time. But specific dates depend on the location:
- at room temperature, the purified nuclei are no longer than 2 weeks;
- in the refrigerator, the shelf life is up to six months, if there are no temperature drops;
- frozen kernels, if not subjected to defrosting, are used for up to a year.
But, depending on ripeness and condition, walnut kernels have their own wintering nuances.
How many walnuts are stored in the shell
Shelf life in the shell under all conditions is 2 years. But for this pre-harvest is required to sort and dry. The inshell product has the longest shelf life, therefore it is best suited to protect the entire harvest and subsequent sale.
If the cellar is dry and the optimum temperature is maintained, then the shelf life rises, even after 3 years, the kernels have an excellent taste, retain useful substances.
How many green walnuts are stored
If the green fruit is not peeled, then the shelf life and benefits are dramatically reduced. As soon as the skin turns black, it will begin to spoil the insides. As a result, the taste and beneficial properties of the product will be lost. The kernels will be affected by mold and rot.
Therefore, it is better immediately after harvest, a maximum of a week, remove the peel, put the fruit to dry and bust. After that, you can leave the kernel in the shell.
Shelled walnuts shelf life
In this case, it is important in what package the product is. If it is packaged unsealed, then its shelf life is not more than a month. With high-quality packaging, the kernels can be stored for 9-12 months without losing taste and beneficial properties.
In the freezer in the foil, the kernels will last for a year if they are not defrosted.
Just in the refrigerator, the period is reduced to six months. Even less at room temperature - the kernels are only suitable for 14 days, regardless of packaging.
Why does walnut taste bitter
If fresh kernels are burning, the reason is their immaturity. Mature fruit initially does not contain bitterness and does not begin to taste bitter under all storage conditions. The main reasons lie in the oil, which is contained in the nuclei. Also film can be bitter. If storage is intended to be peeled off, it is recommended to remove the film.
The kernels burn out quickly, therefore it is important to follow the storage rules. They start to eat bitter because of humidity, cold or heat.
Storage of peeled walnuts at home in case of non-observance of temperature and light regimes will lead to the appearance of bitterness and mold, if the humidity is 70%.
How to remove the bitterness of walnuts
There are several ways to remove bitterness:
- pour in ice water for 12 hours;
- pour boiling water, but then the product is suitable only for culinary preparations.
If the product is bitter after the washing procedure, it means that it is no longer suitable, such a product should not be eaten.
To store peeled walnuts, as in the shell, it is necessary in the dark at low temperature, without moisture. Then they will persist for long, and no bitterness will appear in them. The optimal place for accommodation - cellar or basement. You can save the product at home for a long time if there is a suitable room. It is allowed for a short time to place the peeled kernels in the refrigerator, in the freezer, but one should not allow frequent, sudden temperature changes. It is important to protect the crop so that the nutrients are saved as much as possible.