[Freezing dried persimmons] rapid freezing demonstration

As the cold season approaches, dried persimmons have become more common in supermarkets and department store basements.

The dried persimmons, which take a lot of time and effort, convey a sense of peace and warmth.

Truly a natural sweet made from sunlight and the cold winter north wind!

However, because the expiration date is short, many of them are discarded due to mold growth.

Generally, dried persimmons use sulfur dioxide as a preservative, but if you rapid freezing, you might be able to preserve their deliciousness for a long time without adding any preservatives. This led to this freeze.

Nutrition of dried persimmons

By drying persimmons, which are already highly nutritious, they become even more nutritious.

Vitamin C decreases, but instead vitamin A increases and carotene increases. And it has 4 times the sugar! That's natural sweetness.

However, it is also rich in tannins, so people with anemia should avoid eating too much. It interferes with iron absorption. It's okay if you avoid eating it before or after meals.

Before freezing dried persimmons

This sample is Ichitagaki from Nagano Prefecture, which I purchased at a supermarket.
*The white powder on the surface is fructose (glucose)

How to freeze dried persimmons

通常冷凍庫で凍結する干し柿　➡　乾燥防止のため冷凍前に包装します。

液体凍結機で凍結する干し柿 ➡　アルコールにつけるため冷凍前に包装します。

空気凍結機で凍結する干し柿　➡　裸のままで凍結

After wrapping, each item is placed in the refrigerator.

After freezing

It usually takes about 60 minutes in the freezer for the core temperature to drop to -20℃.

All three types of rapid freezer took about 10 minutes!

The larger the size and thickness, the more there will be a difference between the two.

Dried persimmons have a high sugar content, so they do not freeze solidly.

It looks delicious even if you eat it as ice cream!

Thaw frozen dried persimmons

I thawed it in the refrigerator.
There was no difference in weight before and after thawing.

Tasting time!!

​Several people will perform a sensory evaluation on whether it looks delicious, what the flavor is, what the texture is, and what the taste and aroma are.

As a result, the food frozen in the regular freezer was hard and had lost its sweetness and flavor, whereas the food frozen in rapid freezing had a good texture and retained its sweetness and flavor.

However, even among rapid freezing products, there are slight differences in texture, sweetness, and flavor.

There are compatibility depending on the food and ingredients, so we recommend that you do a comparison test once.

You'll be surprised at the difference between it and a regular freezer!

Conclusion

Based on these results, rapid freezing of dried persimmons is highly recommended.

If you freeze the food when it tastes good, you can preserve it for a long time.

It also reduces waste and waste due to mold growth, and allows for a stable supply outside of the peak season.

About comparative freezing test

Many companies are already conducting rapid freezing tests in their test rooms this month.

Would you like to try the power of rapid freezing on your food products?

We also offer mail-in tests for those who are unable to bring their own.

More than half of the companies that requested information are participating, so please feel free to contact our staff if you would like to participate.