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Freeze-Drying (Lyophilization) Process for Food Applications
Freeze-drying preserves the color, aroma, taste, texture, and nutritional value of food, making it ideal for high-value products like fruits, coffee, meat, probiotics, and ready-to-eat meals.
① Freezing (Pre-Freezing)
Rapid freezing at -30°C to -50°C to form small ice crystals, minimizing cellular damage.
Critical factor: Slow freezing → large ice crystals → poor rehydration & texture loss.
Under vacuum (0.01–0.6 mBar), heat is applied to convert ice directly into vapor.
Critical factor: Temperature must stay below the eutectic point to prevent melting.
Gentle heating (20–50°C) removes bound moisture, achieving <5% residual water.
Critical factor: Excessive heat may cause browning or protein denaturation。
Model A series -standard type-Edible Bird's Nest freeze dryer
Specifications Standard type for industrialized production Model A25 A50 A75 A100 A125 A200 Loading capacity (kgs/batch) 330 660 990 1320 1650 2640 Nominal total loading area of heating plates(㎡) 25 50 75 100 125 200 Max.capacity of vapor condensing (kg/h) 57.5 115 173 230 280 450 Operating temperature of heating plates (℃) 30~120 Nominal working pressure (Pa) 30~120 Evacuating time to reach within 133 Pa with empty loading (min.) 15~20 Required peak cooling capacity at -40℃(kw) 45 85 132 180 217 350 Max.vapor consumption of 0.7 MPa (kg/h) 70 135 200 240 400 650 Installation power (KW) 30 55 68 86 94 135
Company profile:
Dalian Iceberg Freeze Drying Technology Co., Ltd. is specialized in the research, design and manufacture of the Edible Bird's Nest freeze dryer and food individual quick freezing equipment. Bird's Nest freeze dryer researched by the Company with foreign advanced technology has reached the international advanced level. The Company's products scatter about the whole country, and are exported to Central and South America, Southeast Asia, Europe.
The Company has the strong management capacity of set engineering design and installation of Bird's Nest freeze dryer.In these years, Bird's Nest freeze dryer undertaken by the Company all have been in good quality,with short construction period and low integrated cost, thus winning the users' praise and recognition.
Delivery Bird's Nest freeze dryer
Did you know our Edible Bird's Nest freeze dryer per batch while cutting your energy costs by 30%?
That's why top food producers like Meiji and Ajinomoto rely on our freeze dryers for their premium ingredients - from exotic fruits to specialty seafood.
Retains nutrients: Freeze-dried food retains up to 97% of its nutrients, including vitamins, minerals, and antioxidants. Long shelf life: Freeze-drying removes the potential for bacterial growth, so freeze-dried food can last for years. Maintains flavor and texture: Freeze-drying preserves the original shape, flavor, and texture of food. Sustainable: Freeze-drying reduces food waste and transportation and storage costs.
Freeze drying works by first freezing a substance, then lowering the pressure around it to a vacuum, which allows the frozen water to directly transition from a solid (ice) to a gas (water vapor) through a process called sublimation, effectively removing the water content without going through a liquid phase, thus preserving the material's structure and properties; this is often used to preserve food, pharmaceuticals, and biological samples by significantly extending their shelf life.
We Dalian Iceberg produce and supply freeze drying equipment with the below types and sizes: 1)Type: Industrial scale of freeze dryers with internal assembly of vapor trap(s) with separate condensers performing the functions of alternative vapour trapping and de-icing Sizes: A50, A75, A100, A125 and A200 2)Type: Pilot Freeze-dryers with one-time condenser Size: A5, A10, A20, A30 We can also develop other model of pilot freeze-dryers according to customer’s demands
It is 120-150 days in Europe and the United States, and 90-120 days in other regions.
Within 24 hours
The following 14 items of supplies are included in the contract price offer: 1) Drying chambers (with already integrated internal packages of the heating plates and the condensers) 2). Hot water system 3). Vacuum system with units for initial evacuation and vacuum maintaining 4). Ammonia circulation system 5). Alternative de-icing system 6). Pneumatic system 7). Cooling system (cooling tower) 8). Control centre with control panels and computer 9). Freezing tunnels 10). Rail system 11). Trolleys 12). Trays 13). Connecting pipes, pipe fittings and valves for systems 14). Cables, wires, shielded control lines, etc. for all systems We can also add other equipment according to customer's request.
