Freeze-Drying Technology: Innovation and Advantages in Pet Food

01 Background and Application of Freeze-Drying Technology

There are always enthusiastic pet owners around us who aspire to be meticulous caregivers, determined to prepare healthy homemade meals for their furry friends.

Eagerly, they head to supermarkets to purchase large quantities of ingredients, yet these ingredients often end up sitting forgotten in the corners of refrigerators.

These loving pet parents start with good intentions for their pets’ health, but are often defeated by laziness.

Now, with freeze-dried (FD) technology—a cutting-edge innovation turning this dream into reality—your pets can enjoy healthy and delicious food too!

When it comes to FD freeze-drying technology, you may, like the author, first think of space food.

During the Shenzhou-5 manned space mission, astronauts enjoyed such freeze-dried food in space.

Today, this advanced technology has been widely integrated into our daily lives.

Freeze-dried fruits, vegetables, tea, herbs and other products are loved by the public thanks to their sophisticated processing and numerous benefits.

In recent years, freeze-dried pet food has also gained increasing popularity in the market.

02 Production and Advantages of Freeze-Dried Food

Freeze-dried food, also known as vacuum freeze-dried food, features a unique production process: frozen ingredients such as meat, fruits and vegetables are directly freeze-dried in a vacuum environment.

In this process, the ingredients are dried at ultra-low temperatures for approximately 24 hours, during which ice crystals sublimate directly into gas, skipping the melting stage.

This removes moisture from the ingredients while preserving their nutrients intact.

Freeze-dried pet food also adheres to the principles of being natural and additive-free, using food-grade meat, fish, shrimp, liver, fruits and vegetables as raw materials to ensure dietary safety for pets.

Bacteria and microorganisms in these raw materials are effectively killed at low temperatures, allowing pets to eat with peace of mind.

In addition, the freeze-drying process locks in the freshness and nutrition of ingredients, providing a balanced diet for pets’ healthy growth.

When rehydrated with water, freeze-dried food can largely restore its original form, letting pets enjoy both delicious taste and good health.

03 Uniqueness of Freeze-Dried Food in Pet Food

Freeze-dried pet food not only retains the natural color, aroma and taste of ingredients, but also locks in up to 95% of nutrients under low-temperature conditions.

Its excellent rehydration ability allows the soaked food to nearly return to its original state, providing pets with both delicious flavor and balanced nutrition.

Besides, the product is free of additives, easy to store and transport, ensuring safe and convenient feeding for pets.

There are various food drying methods, including sun drying, oven drying, boiling, spray drying and vacuum drying.

However, these processes are carried out above 0°C, often resulting in shrunken size, hardened texture, and even denaturation of microorganisms and nutrients in the final products.

In contrast, freeze-drying technology effectively overcomes these drawbacks, making freeze-dried products highly acclaimed.

FD freeze-dried food stands out for its unique advantages.

Only physical changes occur during production, with no preservatives added, preserving the original "green" nature of food.

The retention rate of internal nutrients reaches over 96%; meanwhile, delicate aromatic oils in food are perfectly preserved on the surface, and the flavor and aroma of ingredients may even be enhanced by freeze-drying, further improving palatability.

Moreover, such food can be stored long-term without refrigeration, extending the shelf life of fresh food to more than 12 months, even up to 24 months or longer.

Its strong rehydration restores freeze-dried food to its original state in appearance, color, taste and nutrition.

For pets, freeze-dried meat eliminates the bacterial risks of raw meat and saves the trouble of cooking, being both convenient and nutritious.

Although slightly more expensive, the small daily feeding amount makes it cost-effective in the long run.

It can be eaten directly, easily mixed with regular pet food, or soaked in water before serving.

Note that overfeeding may cause bloating in pets, so feed in moderation.

Freeze-dried beef is rich in protein and trace elements, especially creatine, which is highly effective in boosting strength and muscle growth;

freeze-dried chicken is nutritious and helps pets gain weight;

freeze-dried salmon benefits pets’ coat and eyesight;

freeze-dried cod is favored for its high protein and low fat content.

In addition, freeze-dried baby quails have comprehensive nutrition and are known as "animal ginseng".

About 120 baby quails are contained in every 150g of freeze-dried product, enough to feed pets for two months, saving both money and effort.