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More and more production facilities, from small-scale to large-scale, are aiming to export products such as dried fruits, medicinal herbs, or high-end food products. However, to enter demanding markets like Japan, Korea, Europe, or the United States, the quality of the dried products cannot be overlooked.
Not all types of dryers can meet those stringent requirements. Freeze dryers are suitable for exporting are the top choice because they help preserve natural color, characteristic aroma, and valuable nutritional content – crucial factors for products to meet international market standards.
MỤC LỤC
What is a freeze dryer? And how does it differ from other technologies?
Heat pump food dryer is a type of machine that uses the principle of drying at low temperatures (approximately 20–50°C), combined with a dehumidification system and dry air circulation to gently dry products. Thanks to its low-temperature operation, the machine helps to preserve almost entirely the color, flavor, structure, and nutrients in food or medicinal herbs – something that traditional drying methods often struggle to achieve.
Differences compared to other drying technologies:
| Criteria | Freeze drying | Heat drying (convection drying) | Freeze-drying |
|---|---|---|---|
| Drying temperature | 20–50°C | 40–90°C or higher | Below 0°C (freezing) then vacuum drying |
| Product quality | Preserves color, scent, and active ingredients effectively. | Often loses color, deforms, and loses nutrients. | Very high quality |
| Investment costs | Medium | Short | Very high |
| Popular applications | Fruits, medicinal herbs, bird’s nest, mushrooms | Coffee, wood ear mushrooms, potatoes | Cordyceps, a premium pharmaceutical product. |
| Drying time | From 10–30 hours depending on the product | Faster but lower quality | Very long (20–48 hours) |
The biggest advantage of freeze dryers is the balance between product quality and investment cost. They are not as expensive as freeze-drying, but produce a significantly higher quality product compared to conventional heat drying. This is why freeze dryers are increasingly chosen by processing facilities to produce products for export – where quality standards are crucial.
Why are freeze dryers suitable for export?
Freeze dryers are considered a suitable option for businesses and production facilities aiming to export products such as dried fruits, medicinal herbs, bird’s nests, medicinal mushrooms, or high-end foods. The primary reason is that freeze-drying technology preserves the natural color, characteristic aroma, and valuable nutrients in the product – crucial factors when trying to enter demanding markets like Japan, the EU, or the US.
Compared to conventional heat drying, cold drying machines operate at low temperatures, preserving the active ingredients in medicinal herbs and preventing the loss of vitamins in fruits. Simultaneously, the moisture content after drying reaches an ideal level (only about 10–15%), allowing for longer product shelf life and reducing mold and spoilage during long-distance transportation. As a result, the risk of product returns or damage after customs clearance is significantly reduced.
In particular, freeze-dried products have an attractive appearance, retain their full nutritional value, and are very suitable for packaging into high-end product lines – from gifts and functional foods to regional specialties. With these advantages, freeze-drying machines are not only production equipment but also tools to elevate Vietnamese products on the global agricultural and food export map.
Product groups suitable for freeze dryers
- Dried and crispy fruits: Including mango, banana, jackfruit, dragon fruit, pineapple, guava, durian, strawberry… Freeze-drying machines help preserve the beautiful color, natural flavor, and customizable chewiness/crispness according to needs, suitable for high-end consumer markets and export.
- Vegetables and herbs: For example, bitter melon, okra, perilla, basil, moringa, centella, kale… Freeze-drying preserves their vibrant green color and prevents nutrient loss, making them suitable for use in teas, functional foods, or as ingredients in the food processing industry.
- Medicinal herbs and medicinal mushrooms: Including reishi mushrooms, cordyceps mushrooms, notoginseng, ginseng, Centella asiatica, turmeric, ginger, cinnamon, etc. This group of products is very sensitive to temperature; freeze-drying preserves active ingredients, retains natural aroma, enhances pharmacological efficacy, and increases export value.
- Bird’s nests and bird’s nest products: Refined bird’s nest products, dried and steamed bird’s nests, packaged bird’s nest strands, etc. Freeze-drying helps preserve the bird’s nest strands, preventing breakage or deterioration, extending shelf life while maintaining high standards of sensory appeal and nutritional value.
- Nuts and nut products: Examples include cashews, lotus seeds, macadamia nuts, flavored peanuts, pumpkin seeds, etc. Freeze-drying preserves the original flavor, minimizes loss of natural oils, and is suitable for nutritious snack products or high-end packaging ingredients.
- Dried flowers, plants, and craft materials: Camellia flowers, jasmine flowers, cinnamon bark, licorice, various natural ingredients used in tea, dried essential oils, gifts, or decorations. Cold drying helps preserve their natural shape and color, preventing breakage or fading over time.
Heat pump food dryer SUNSAY!
Choosing the right freeze dryer for export businesses.
To select the right freeze dryer for export purposes, businesses need to carefully consider the scale of production and product characteristics. For small facilities, a 6-12 tray dryer is sufficient for a few tens to a few hundred kilograms of raw materials per day.
Medium-sized businesses should choose machines with 24–48 trays to ensure stable production. If producing on a large scale or focusing on exports, it is advisable to invest in high-capacity machines with automatic control and precise humidity and temperature control to ensure consistent quality.
Besides capacity, technical factors are also very important. For products like chewy fruits, medicinal herbs, and bird’s nests, the machine needs a gentle airflow and stable temperature to preserve color, aroma, and nutrients. Meanwhile, nuts and crispy dried fruits require a machine with good dehumidification and deep drying capabilities. The machine should also be made of 304 stainless steel to ensure food safety and hygiene, and meet HACCP, FDA, or ISO standards if for export.
Choose a reputable supplier that provides installation support, operational guidance, and technology transfer for drying processes tailored to your specific product. A suitable freeze dryer not only ensures quality but also serves as a foundation for elevating your products in the international market.
Contact us for advice and quote
With over 15 years of experience and a commitment to innovation, SUNSAY is a leading manufacturer in the agricultural dryer industry. We provide superior quality dryers at competitive prices, ideal for improving the quality of agricultural products.
SUNSAY is committed to providing customers with agricultural dryers of superior quality. Our dedication to research and technology development helps us create effective drying solutions, ensuring the quality, color and flavor of agricultural products are preserved.
For detailed advice, please visit the website: dryer.com.vn or contact the Hotline (Zalo): 0935 995 035 or call the switchboard: 094 110 8888 for support.
Detailed information about the dryer will be updated during the consultation and discussion process. Therefore, do not hesitate to contact us immediately!
