Celery Preservation Secrets: Keeping Freshness for a Long Time

18.10.2024
ling
0 reviews

Outline

I. The Importance of Celery Preservation
Explain that celery is a nutritious vegetable, and proper preservation methods are crucial for maintaining its nutrition and taste.
II. Common Celery Preservation Methods
A. Refrigeration
Put celery in a plastic bag. Leave a small opening for it to “breathe” and then place it in the refrigerator. This way, it can be kept fresh for 3 to 5 days.
B. Freezing
Cut celery into small sections, wash and drain them. Put them in plastic wrap and remove the air before freezing. This can extend the preservation period.
C. Wrapping in Paper
Spray water on the surface of celery and then wrap it in paper. Place it in a cool and ventilated place. It can maintain its quality and freshness for about a week.
D. Storing in a Basin of Water
Tie celery with a string and place it root-down in a basin filled with water. It can be preserved for about a week.
E. Preserving Cut Celery
For cut celery, blanch it with a small amount of water and then cool it. It can be kept for 2 to 3 days. It can also be frozen after putting it in a bag and removing the oxygen.
F. Special Preservation for Different States
Wash fresh celery and wrap it in a paper towel. Put it in the refrigerator compartment. It can be kept fresh for 5 to 7 days. Celery can also be used to treat certain diseases. For example, making celery juice can reduce cholesterol.
III. Celery Preservation in Different Scenarios
A. Daily Home Preservation
Store it in a cool and dry place. Seal it to prevent moisture and avoid wilting due to high temperatures causing water evaporation.
Store it in the refrigerator compartment. Seal it well to prevent affecting other ingredients or dishes.
B. Mass Storage
Frozen storage: Build a frozen storage cellar on the north side of a windbreak. Place celery roots downward and obliquely. Cover it with fine soil. Adjust ventilation and soil covering thickness according to the temperature.
False planting storage: Tie it up, place it individually, or plant it one by one in the soil. Use bamboo poles around it to enhance ventilation. After putting it in the ditch, irrigate it and adjust the covering according to the temperature drop.
Cold storage: Control the warehouse temperature at about 0°C and the relative humidity at 98% - 100%. Put celery in perforated packaging. Lay a wet sack on the ground to maintain high humidity and keep ventilation.
Simple controlled atmosphere storage: Put celery in plastic bags. Use the natural oxygen reduction method or loosely tie the bag opening. Control the warehouse temperature at 0 - 2°C.
Silicon window controlled atmosphere storage: After pre-cooling celery in the warehouse, put it in a silicon window bag and tie the bag opening tightly. Keep the warehouse temperature at 0 - 1°C.

Short Content

How to preserve celery?
Everyone knows that celery wilts after 3-4 hours of not being stored well, so here are a few ways to preserve celery.

Store at room temperature
Wrap celery in newspaper and cardboard, then sprinkle water on the paper and put it in a cool place, so that it can be stored for 3~5 days
Soaking the roots of celery in water can also be preserved for several days
Keep refrigerated
It can be stored directly in the refrigerator for 1-2 days
Wrap it in wet paper and put it in the refrigerator for about 5-7 days
Summary of key points
Celery is prone to losing water
Soaking the roots in water can effectively prolong the storage time
Wrapping celery in wet paper and placing it in a cool place can effectively prolong the storage time

Content Reading

1. The importance of celery preservation

As a nutritious vegetable, celery is rich in protein, carbohydrates, carotene, calcium, phosphorus, iron, and other vitamin nutrients. Therefore, the preservation method is essential to maintain the nutrients and taste of celery.
Fresh celery is not only crunchy and tender, but also nutritious. If celery is not properly preserved, it will lose its original nutritional value and taste. For example, celery leaves tend to turn yellow and wilt, and the stems become limp. Such celery not only has a poor taste, but also loses a lot of nutrients.
In addition, celery that keeps it fresh well can extend its shelf life and reduce waste. In our daily lives, we often buy too much celery and are unable to eat it in a short period of time. Without proper preservation methods, celery can easily spoil and have to be thrown away, resulting in waste.
According to statistics, the amount of celery wasted each year due to improper freshness is staggering. If we can master the right way to keep fresh, we can greatly reduce this waste and also save money for families.
In conclusion, the importance of celery preservation cannot be overlooked. Whether it's from the perspective of maintaining nutrition and taste, or from the perspective of reducing waste, we should pay attention to the preservation method of celery so that this nutritious vegetable can bring out the most value on our table.

2. Common celery preservation methods

(1) Refrigerated storage
Put the celery you can't eat enough into a crisper bag, leave a small opening for celery breathing, and then put it in the refrigerator. This method of refrigeration can keep it fresh for around 3 – 5 days. According to relevant data, under suitable refrigeration conditions, the freshness of celery can be well maintained, and its nutrients will not be lost too quickly.
(2) Cryopreservation
Cut the celery into small pieces, wash and drain it, then put it in plastic wrap to drain the air from the plastic wrap, and finally put it in the freezer area of the refrigerator for preservation. Freezing can extend the shelf life of celery, and when we need to use it, although the texture of celery will be soft, the flavor will not change.
(3) Keep it in a paper package
The water in celery is very abundant and can be lost if not stored properly. If you want to keep the water in the celery from losing, you can spray some water on the surface of the celery first, then wrap the celery in paper and put it in a cool and ventilated place. This method can keep the quality and freshness very well, and it can usually be stored for about a week.
(4) Discharge basin preservation
Tie the celery one by one with a rope and then put the celery root down and put it in a basin with water, which preserves the water in the celery, usually for about a week.
(5) Cut celery for preservation
Cut celery can be blanched with water, put in a plastic bag and refrigerated for 2-3 days. Or the cut celery can be bagged and deoxygenated and frozen, so that it can be taken out and used directly when needed.
(6) Special preservation in different states
Fresh celery is washed and wrapped in a paper towel and placed in the refrigerator for 5 - 7 days. In addition, celery also has certain medicinal properties, such as juicing can lower cholesterol. Celery is rich in nutrients such as fiber, which have many benefits for human health.

3. Celery preservation in different scenes

(1) Daily preservation of the family

1. Store in a cool and dry place, seal and prevent moisture to avoid water evaporation and wilting caused by excessive temperature.
In the daily preservation of the family, if the amount of celery is small, you can choose to store it in a cool and dry place. First, gently dry the moisture on the surface of the celery, and then wrap it in a clean paper towel or plastic wrap, which can play a certain role in preventing moisture. Keep the wrapped celery in a cool, well-ventilated place, away from direct sunlight and places where the temperature is too high. If placed in a hot area such as the kitchen, the water in the celery can easily evaporate, causing the celery to wilt and affecting the taste and quality.

2. Store in the refrigerator and seal it well to prevent other ingredients or dishes from being affected.
The refrigerator freezer compartment is one of the common ways to preserve celery at home. Put the celery in a crisper bag, try to expel the air from the bag, and seal it well. This prevents celery from interacting with other ingredients or dishes and avoids flavor transfer. At the same time, the sealed environment also helps to maintain the moisture and freshness of the celery. When placing it in the refrigerator freezer, you can put the celery in the vegetable freshness drawer or on the lower level of the refrigerator to avoid being affected by the frequent opening and closing of the refrigerator door. Generally, celery kept in the freezer compartment of the refrigerator can stay fresh for around 3 – 5 days.

(2) Mass storage

1. Frozen storage: Build a frozen storage cellar on the north side of the wind barrier, place the celery root obliquely downward, cover with fine soil, and adjust the ventilation and covering thickness according to the temperature.
For situations where celery needs to be stored in large quantities, freezing is a viable method. On the north side of the wind barrier, a freezer was built, and the four walls of the cellar were made of plywood and compacted with earth, with a thickness of 50 to 70 cm and a height of about 1 meter. When the wall is built, a wooden pole with a diameter of about 10 cm is erected every 0.7 - 1 meter in the center of the south wall, and the wooden pole is pulled out after the wall is beaten to form a vertical ventilation tube. Dig a vent 10 - 30 cm deep and 10 cm wide at the bottom of each vent and open the air inlet in the ground through the north wall to connect the vent duct, vent and air inlet into a ventilation system. Two layers of straw and a layer of fine soil were spread on the ventilation ditch, and the celery was bundled into bundles of 5 - 10 kg, with the roots diagonally downward in the cellar. After filling, cover the celery with a thin layer of fine soil, so that the leaves are not exposed. Cover the straw during the day, remove it at night, and cover it again the next morning. When the minimum temperature is above -10°C, all ventilation systems can be turned on; When it is below -10°C, the air inlet outside the north wall should be blocked, so that the cellar temperature is at -1 - -2°C. The depth and thickness of the cellar depend on the local temperature, but the depth of the cellar is generally between 80 and 100 cm.

2. Fake plant storage: It can be bundled, placed in a single tree or planted in the soil one by one, and the surrounding area is erected with bamboo poles to strengthen ventilation, and the ditch is irrigated and covered with the temperature drop.
Pseudo-plant storage is also a way to store celery in large quantities. Celery can be uprooted and bundled into 1.5 - 2 kg or 5 - 10 kg bales, placing them under storage ditches or sheds with gaps between the bundles to facilitate ventilation. Another method is to place the celery one by one tightly in the furrow or in the furrow under the shed, or plant the celery one by one in the soil, leaving a certain gap between the plants. The planting method has the longest storage period; Although the storage capacity of the bundling method is large, the temperature of the center of the bundle is high, and the celery is easy to yellowing and rotting, and the storage period is short. The method of placing a single tree has a storage period in between. In order to enhance ventilation, bamboo poles are often erected around celery to prevent celery from lodging and facilitate ventilation. Generally, the width of the false planting ditch is 1.5 meters, and the length is not limited. The depth of the ditch depends on the height of the celery, in order to facilitate heat preservation and ventilation, generally the depth of the ditch is 1 - 1.2 meters, 2/3 is underground, and 1/3 is above ground. The above-ground part was walled with soil, and celery was planted in a ditch. Celery should be watered immediately after planting to flood the roots, and then re-irrigate 1-2 times depending on the wet and dry soil. After entering the ditch, use grass or build a shed on the top of the ditch, cover the soil, and leave a vent as appropriate. Later, as the temperature drops, add soil covering and block the tuyere. Maintain the ditch temperature of about 0 °C during the whole storage period to prevent heat or freezing.

3. Cold storage storage: control the storage temperature about 0°C, the relative humidity is 98% - 100%, the celery is packed into a perforated package, and the wet sacks on the ground are spread to maintain high humidity and ventilation.
Cold storage is suitable for storing celery in large quantities. The storage temperature should be controlled at about 0°C, and the relative humidity should be 98%-100%. Celery can be packed into perforated polyethylene-lined crates or cartons, or in open plastic bags. These packages maintain high humidity, reduce water loss, and are not at risk of carbon dioxide accumulation or hypoxia. In order to maintain high humidity conditions in the warehouse, wet sacks can be laid on the floor and kept moist frequently. At the same time, it is necessary to maintain adequate ventilation so that the temperature of the warehouse is uniform. In order to ensure the air circulation around the box, in addition to stacking into stacks, there should be ventilation channels between the stacks, and wooden slats can also be added in the middle of the boxes. If there is no forced ventilation, the celery boxes should not be stacked more than 4 layers, otherwise the respiratory heat will not be able to dissipate and cause injury. Under the above conditions, celery can be stored for 2 - 3 months.

4. Simple controlled atmosphere storage: Celery is packed into plastic bags, using natural oxygen reduction method or loosening the bag mouth, and the storage temperature is controlled at 0 - 2°C.
Simple controlled atmosphere storage is a method with good results in recent years. 100 cm × 75 cm bags made from 0.08 mm thick polyethylene film, each containing 10 to 15 kg of selected, free of pests and diseases, with short roots, are tied tightly and placed in layers on cold storage shelves. The storage temperature is controlled at 0 - 2°C. When the natural oxygen reduction method is used to reduce the oxygen content in the bag to about 5%, open the bag mouth for ventilation, and then tie it tightly. You can also loosen the mouth of the bag, that is, insert a round rod with a diameter of 1.5 - 2 cm when tying the mouth, and pull it out after piercing to leave a hole at the mouth, and there is no need for manual air adjustment in storage. This method can store celery from October to the Spring Festival, with a commodity rate of around 90%.

5. Controlled atmosphere storage in silicon window: Put celery in a silicon window bag after pre-cooling in storage, tie the bag tightly, and keep the storage temperature at 0 - 1°C.
The silicon window is easy to operate and has good effect. Pre-cool the selected celery for 24 hours, then place it in a silicon window bag, tie the bag tightly, and keep the storage temperature at 0 - 1°C. The specifications of the silicon window bags are: 100 cm long and 70 cm wide bags made of polyethylene plastic film, with a silicon window area of 96 - 110 square centimeters and a capacity of 15 - 20 kg. This method can store celery for more than 3 months.

Storing celery in plastic bags by vacuum sealing machine

(1) Choose the right vacuum bag and vacuum sealing machine
When choosing vacuum bags, you should choose thick and sturdy bags, and avoid choosing thin and easily torn bags. Generally speaking, vacuum bags specially used for food preservation have good barrier and air tightness, which can effectively prevent air and moisture from entering. At the same time, choose the right size vacuum bag for the amount of celery you need to keep.
When it comes to the choice of vacuum sealing machine, there are several types available on the market. The household vacuum sealing machine is easy to operate, the price is relatively close to the people, and it is suitable for daily use of the family. When buying a vacuum sealing machine, you can refer to the word-of-mouth and evaluation of the product, and choose a product with stable performance and good sealing effect.

(2) The correct method of using the vacuum sealing machine
First, make sure that the celery is dry and free of moisture, as moisture can affect the sealing effect. Arrange the celery, remove the yellow and rotten leaves, and if necessary, cut the celery to the appropriate length.
Put the celery into a vacuum bag, try to expel the air in the bag, and then align the bag mouth neatly with the sealing mouth of the vacuum machine to ensure that the bag mouth is neat and wrinkle-free.
Operate according to the instructions for use of the vacuum machine, start the vacuum machine for pumping and sealing. When sealing, make sure that the bag mouth is completely closed and there is no air leakage, so as to ensure the vacuum effect.
Finally, inspect the sealed food packaging bag to ensure that the seal is firm and not loose.

(3) The advantages of vacuum-sealed preservation of celery
Extend the shelf life: By expelling the air inside the bag, a low-oxygen environment is created, which can effectively inhibit the growth and reproduction of microorganisms, thereby extending the shelf life of celery. According to relevant studies, celery preserved by vacuum sealing can be kept fresh several times longer than ordinary preservation methods.
Maintain nutrition and taste: In a vacuum environment, the nutrients of celery are not easy to lose, and the taste can be well maintained. For example, nutrients such as vitamin C in celery are more stable in a vacuum.
Space-saving: Vacuum bags can compress celery tightly, saving storage space, especially when space is limited in the refrigerator at home.

(4) Precautions for vacuum-sealed preservation
Vacuum bags also have an expiration date, and for vacuum bags that have not been used for a long time, they must be carefully checked for cracks and air leaks before use. Generally, the shelf life of vacuum bags is around 1-2 years, and the specific time can be checked according to the instructions on the product packaging.
Pay attention to safety during the use of the vacuum sealing machine, and avoid hand contact with heat sources or running parts. At the same time, it is necessary to operate correctly according to the instructions, and clean and maintain it regularly to keep it in good working condition.
When storing, pay attention to avoid the vacuum bag being squeezed by external pressure, so as not to cause the bag to break or leak. Vacuum bags can be placed in a dedicated area of the refrigerator or in other safe places.

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