[It's fast, but there's no unevenness! 】Summary of advantages and types of commercial thawing machines

"I can't defrost the food in time, so I want to defrost it faster."
"Food drips when defrosting."

There may be some people who have such troubles every day.

In fact, using a high-quality defroster may solve all of these problems. By using a good defrosting machine, you can prevent food from dripping and defrost it quickly. In addition to improving quality and dripping, there are also examples of how this has led to reductions in labor costs.

On this page, we, who have tested the freezing and thawing of hundreds of foods, will explain the benefits and types of thawing machines.

For frozen foods! Advantages of commercial thawing machines

The freezing method is important to maintain the quality of frozen foods, but I would like to think about the surprisingly difficult thawing method.

People tend to think that they can thaw food by taking it out of the freezer, but it is difficult to thaw food without deteriorating its quality, so you need to be careful.

Why is it so difficult to thaw food without losing quality?

This is because when food is frozen, the water in the food freezes, disrupting the water balance. The suitable thawing method varies depending on the food, and there are various thawing methods such as natural thawing and running water thawing.

Natural thawing at room temperature is suitable for cooked foods that have been superheated, but the thawing time will vary depending on the indoor temperature conditions. Especially in the summer, when the room temperature is high, leaving the food for a long time may cause it to thaw too much or become damaged.

Natural thawing in the refrigerator is suitable for thawing meat, etc. Thawing at low temperatures can prevent quality deterioration, but it takes time to thaw. If the cold air is not applied evenly, uneven thawing may occur.

Thawing with running water can thaw food in a short time, but since the water temperature is not constant throughout the year, there may be variations in quality. Exposure of food directly to water will damage its nutrition and flavor, so place vacuum-packed or bare food in a plastic bag to thaw.

This type of thawing takes time and the quality of the food after thawing is unstable. Therefore, there is a growing demand for defrosting machines that can consistently produce products of consistent quality and keep costs down.

Restaurants that use frozen foods, especially supermarkets and delicatessen stores, must thaw large quantities of food. Using a thawing machine can shorten thawing time and provide high-quality food.

Since you can defrost food while adjusting it depending on sales, you can minimize sales losses such as unsold items.

It has a fast thawing speed and can thaw evenly, so food cells are not damaged during thawing. Since the quality before freezing can be maintained, even perishable products such as sashimi can be provided with fresh taste.
It prevents drips from flowing out and drying out, and the appearance remains the same, improving yields and reducing waste loss.

The defrosting machine is easy to operate and there are almost no defrosting mistakes, so no matter who defrosts the food, it can produce the same quality. You can do other tasks while defrosting, increasing work efficiency.

Various types of commercial thawing machines

There are various types of defrosting machines, so I would like to take a look at some of them.

Thawing machine using electromagnetic waves

A high-frequency thawing machine is a thawing machine that uses high frequency waves with a low frequency of 13MHz. When high frequency is applied, molecules with positive and negative charges in the food collide and vibrate, generating frictional heat and thawing the food.

Source: http://www.vinita.co.jp/news/2012/FOOMA2012_report/

Since high frequency waves have long wavelengths and can reach deep inside, it is possible to thaw chunks of meat evenly.

Microwave thawing machines use microwaves with a high frequency of 2450MHz or 915MHz. Recently, a vacuum microwave thawing machine has been developed that alternates heating with microwaves and cooling with vacuum.

The microwaves vibrate the water molecules inside the food, causing it to overheat, and the vacuum vaporizes the ice and frost on the surface all at once, cooling the surface, and this process is repeated. Protects food quality by reducing the difference between surface and center temperatures.

Since it uses electromagnetic waves to heat from the inside, the thawing speed is fast and even large foods can be thawed evenly. Frozen blocks of meat can be thawed evenly, making it easy to slice cleanly.

It is also useful when making thick fish such as frozen tuna or bonito into sashimi. It is being introduced in retail stores such as meat stores, fresh fish stores, and supermarkets.

high voltage thawing machine

This is a defrosting machine that uses electrical energy. Since the food is soaked in the stirring liquid, it can be thawed evenly.

In addition to water, food contains components such as proteins and carbohydrates, and there are molecules that make up each component. The molecules of each ingredient combine with water molecules in the food to form three layers.

When high voltage is applied, the bonded water molecules become fine and fill the surrounding molecules of each component without any gaps. It is suitable for thawing perishable foods such as sashimi as it can suppress food oxidation and bacterial growth and maintain freshness.

Low temperature high humidity thawing machine

Defrost food using low temperature and high humidity steam.

Heat is generated using latent heat, the thermal energy required when a substance changes, such as from solid to liquid or liquid to gas. The latent heat when water vapor turns into water at 100% relative humidity is greater than the latent heat when ice turns into water, so it can be thawed efficiently and quickly.

When sending steam into the refrigerator, the temperature of the steam can be controlled between 30℃ and 40℃. Since you can set the thawing temperature low, you can thaw with stable quality.

It can thaw a wide range of foods, including not only fresh foods, but also confectionery such as cakes and cooked foods.

electrostatic energy thawing machine

This is a refrigerator that generates electrostatic energy inside the refrigerator. This is the case with Hyokanko.

It takes advantage of supercooling, a phenomenon in which it does not freeze even at freezing temperatures. Electrostatic energy causes slight vibrations to the food, causing supercooling.

Since the temperature inside the refrigerator is set close to 0℃, it is possible to thaw the entire food evenly without raising the temperature of the thawed part. Since it can maintain the freshness of food for a long period of time, it can be used as both a commercial refrigerator and a low-temperature storage, making it very convenient to use.

​DENBA is also the best product if you are already using a commercial refrigerator or prefabricated refrigerator.

It can be retrofitted to the refrigerator and creates an electrostatic wave environment throughout the refrigerator.
It can be retrofitted to an existing refrigerator, so it can be used even if there is no space for a new device. The size of the discharge board to be installed is about A4 size and 1.5 cm thick, so it does not take up much space, so it does not change the storage space you used before.

Furthermore, you can switch between using it as a thawing machine and using it as a regular refrigerator by turning the switch ON/OFF. By changing the temperature settings of your existing refrigerator, you can use it for defrosting or as storage.

​This thawing machine is the most popular at the moment, and is ideal for preserving thawed food while maintaining its freshness even after thawing.

Recommended to use in combination with a quick freeze machine

Using a thawing machine can improve the quality of frozen food, but no matter how much you devise a defrosting method, it is meaningless if the quality of the original frozen food is poor.

​Freezing methods are also important in order to provide higher quality foods. Just as there are special machines for thawing, there are machines with special technology for freezing.

A quick freeze machine is a machine developed to quickly freeze food to reduce damage caused by freezing. By quickly passing the water in the food through the freezing temperature range, it is possible to freeze the food without damaging the cells.

Since the cells of the food are not destroyed, it is possible to reproduce the same freshness, taste, and flavor as before freezing.

There are various types of quick freezing machines.

For example, Yoneda Koki Co., Ltd., a manufacturer of high-voltage thawing machines, has developed a quick-freezing machine called Re-Joice Freezer.
This machine freezes vacuum-packed food by immersing it in a cooled liquid. Because liquid has a high thermal conductivity, it can freeze food at an incredibly fast speed.

Both thawing machines and quick freezing machines are machines that protect the quality of frozen foods, so combining them creates a synergistic effect.

In order to improve the quality of frozen foods, I think it would be a good idea to focus on freezing as well as thawing.

Conclusion

What did you think?

By using a thawing machine, you can protect the freshness and taste of frozen foods.

Furthermore, by using it in conjunction with a quick freeze machine, you can provide higher quality food.

If you are considering a thawing machine, why not also consider a quick freeze machine?

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