Dog Food Freeze Dryer
The LONKIA Dog Food Freeze Dryer is a professional freeze drying machine designed specifically for the freeze dried dog food industry. It is suitable for producing the best freeze
Learn MoreCoffee Freeze Dryer
The Coffee Freeze Dryer is designed for premium instant coffee and functional coffee products. It is suitable for brewed coffee extract, concentrated coffee liquid, and flavored coffee bases. Low-temperature vacuum freeze drying preserves aroma, flavor complexity, and active compounds while enabling stable dehydration and long shelf life at room temperature.
Overview
Coffee flavor depends heavily on volatile aromatic compounds and complex flavor structures, which are highly sensitive to drying processes. Traditional spray drying is efficient but often results in aroma loss and simplified taste profiles.
The LONKIA Coffee Freeze Dryer removes moisture via sublimation under low temperature and vacuum, preserving original aroma and flavor complexity. The finished product dissolves quickly and is widely used for premium instant coffee and freeze-dried coffee products.
Working Principle of Industrial Freeze Drying Equipment
The core coffee freeze drying process can be summarized in three stages: pre-freezing, sublimation drying, and desublimation drying.
- First, the concentrated coffee solution is rapidly cooled below the freezing point, causing the water to freeze completely and form a stable solid structure.
- Next, the sample is heated under vacuum, causing the frozen water to sublimate directly into water vapor, which is then captured by a condensation system. This process eliminates the presence of liquid water, thereby minimizing damage to the coffee's structure.
- Finally, residual moisture is removed through a low-temperature desorption stage, bringing the product to a stable moisture content.
Throughout the process, precise control of temperature and vacuum is critical. If the temperature rises too quickly or the vacuum is unstable, it can easily lead to product collapse or loss of aroma. Therefore, a high-precision control system is a key factor in determining the performance of the equipment.
How to Freeze Dry Coffee?
- Extract coffee and prepare brewed or concentrated liquid
- Evenly pour coffee liquid into freeze drying trays
- Start pre-freezing to lock in aroma compounds
- Set drying parameters based on concentration and flavor
- Break or form products and package immediately
Parameter
Project | Parameter |
Effective freeze-drying area | 1–120㎡ (customizable) |
Processing capacity | 10–800kg/batch |
Minimum cold trap temperature | ≤ -50℃ |
Ultimate vacuum | ≤ 10Pa |
control system | PLC + Touchscreen |
power supply | 380V / 50Hz (Customization available) |
Note: Technical specifications may change without notice due to ongoing technological advancements.
Advantage
- Maximum Aroma PreservationFreeze drying preserves volatile aromatic compounds.
- Excellent SolubilityPorous structure ensures fast dissolution without clumping.
- Full Flavor ComplexityMaintains balanced acidity, bitterness, and sweetness.
- Stable Automated ProductionIntelligent control ensures batch-to-batch consistency.
FAQ
- What is the difference between freeze dried and spray dried coffee?Freeze-dried coffee retains aroma and flavor better.
- Does freeze-dried coffee dissolve quickly?Yes, it dissolves quickly due to its porous structure.
- Can flavored coffee be freeze-dried?Yes, flavored coffee bases are supported.
- Is it suitable for large-scale production?Yes, scalable via multiple units.
- Is customization available?Yes, full customization is available.
Does the freeze drying machine support continuous production?A high degree of production continuity can be achieved through multi-batch cycling or system configuration optimization.
