Freeze-Dried Pineapple Case Study
This freeze-dried pineapple case study shows how an Indonesian food processor used an SDG700 20㎡ freeze dryer to process approximately 244 kg of pineapple slices per batch and complete drying in 12 hours.
Quick Facts
This pineapple slice project used real production data instead of general marketing claims. The data helps fruit processors evaluate batch capacity, slicing method, drying time, vacuum range, cold trap capacity, final moisture, and energy cost.
| Location | Indonesia |
|---|---|
| Year | 2014 |
| Product | Freeze-dried pineapple |
| Product Type | Round pineapple slices |
| Equipment | SDG700 freeze dryer |
| Drying Area | 20㎡ |
| Loading Density | 12.2 kg/㎡ |
| Batch Loading | Approx. 244 kg/batch |
| Slicing Direction | Cut perpendicular to the pineapple’s central long axis to form round slices |
| Time to Dry | 12 hours |
| Final Moisture Content | 2.31% |
| Vacuum Range | 26–92 Pa |
| Condenser Capacity | 2 kg water/㎡/hour |
| Total Condenser Capacity | Approx. 40 kg water/hour |
| Energy Consumption | 1.73 kWh/kg fresh material |
| Estimated Batch Electricity Use | Approx. 422.12 kWh |
Commercial Freeze-Dried Pineapple Production
In 2014, a food processing customer in Indonesia used an SDG700 20㎡ commercial freeze dryer to produce freeze-dried pineapple slices for commercial fruit processing.
Pineapple is a high-moisture tropical fruit. It contains natural sugar and organic acids, so the drying process must remove moisture efficiently while protecting flavor, color, and product structure.
For this project, pineapple was cut into round slices by cutting perpendicular to the fruit’s central long axis. This slicing method helped expose more capillary cross-sections and supported moisture removal during freeze-drying.
Pineapple slices were loaded at 12.2 kg per square meter. With a total drying area of 20㎡, the batch loading capacity reached approximately 244 kg per batch.
This calculation helps buyers understand real production capacity. Drying area alone is not enough; loading density, slicing direction, and drying time must be evaluated together.
The Challenge: Drying High-Moisture Pineapple Slices
Pineapple slices release a large amount of water vapor during primary drying. Stable vacuum control, sufficient cold trap capacity, and suitable slicing direction are important for repeatable results.
High Moisture Load
Pineapple slices contain significant water, so the system must remove moisture efficiently.
Slicing Direction
Round slices expose more pineapple capillary cross-sections, which can support moisture removal.
Low Final Moisture
The final moisture content reached 2.31%, supporting storage stability and packaging.
Vacuum Stability
The drying process operated within a 26–92 Pa vacuum range.
Cold Trap Capacity
The condenser capacity was designed at 2 kg water/㎡/hour.
Energy Control
The energy consumption was approximately 1.73 kWh per kg of fresh pineapple slices.
Pineapple Slicing Direction: Why Round Slices Were Selected
For pineapple freeze-drying, the slicing direction affects moisture movement, drying efficiency, and final product texture.
In this pineapple project, the selected slicing method was to cut perpendicular to the pineapple’s central long axis. In practical operation, the cutting blade moves across the fruit’s long axis, producing round, wheel-shaped pineapple slices.
This method was selected because pineapple capillary channels and vascular bundle tissues mainly extend from the root end toward the crown along the fruit’s axial direction. When the fruit is cut across this direction, the cutting surface exposes more capillary cross-sections with larger openings.
Exposing more and larger capillary openings can help moisture move out of the tissue during drying. It can also support the desired porous texture and crisp structure in freeze-dried pineapple slices.
This type of round cross-cut slicing is also common in pineapple drying and fruit flesh processing because it provides a practical balance between product appearance, dehydration efficiency, and consumer acceptance.
SDG700 20㎡ Freeze Dryer
The SDG700 freeze dryer was selected to support medium-scale commercial production for pineapple slices and other tropical fruit products.
- 20㎡ drying area for commercial tropical fruit production
- 12.2 kg/㎡ pineapple slice loading density
- Round cross-cut slices for better moisture movement
- 26–92 Pa vacuum range during drying
- 2 kg water/㎡/hour condenser capture capacity
- 12-hour drying cycle with 2.31% final moisture
Real Drying Data for Freeze-Dried Pineapple
This section gives buyers practical reference data. It shows how loading density, slicing direction, vacuum control, cold trap capacity, final moisture, and energy use affect actual production performance.
In this project, the SDG700 processed about 244 kg of round pineapple slices per batch. The drying cycle was completed in 12 hours, and the final moisture content reached 2.31%.
| Product | Round pineapple slices |
|---|---|
| Slicing Direction | Blade cut perpendicular to the central long axis |
| Fresh Material Loading | 12.2 kg/㎡ |
| Total Batch Load | Approx. 244 kg/batch |
| Vacuum Range | 26–92 Pa |
| Condenser Capacity | 2 kg water/㎡/hour |
| Total Condenser Capacity | Approx. 40 kg water/hour |
| Final Moisture | 2.31% |
| Energy Consumption | 1.73 kWh/kg fresh material |
| Drying Time | 12 hours |
Production Result: 12-Hour Drying Cycle
The SDG700 20㎡ freeze dryer completed the pineapple slice drying process in approximately 12 hours. The final moisture content reached 2.31%.
Why These Data Points Matter
For fruit processors, real production data is more useful than general machine descriptions. These parameters help estimate output, freeze dryer cost, and equipment suitability.
1. Loading Density
The customer loaded pineapple slices at 12.2 kg/㎡. For a 20㎡ freeze dryer, this means approximately 244 kg per batch. This gives buyers a clearer way to estimate production capacity.
2. Slicing Direction
Cutting perpendicular to the pineapple’s central long axis produces round slices and exposes more vascular bundle cross-sections, which can support moisture removal and porous texture.
3. Energy Consumption
The energy consumption was approximately 1.73 kWh per kg of fresh material. Based on 244 kg per batch, the estimated electricity use was about 422.12 kWh per batch.
What Fruit Processors Can Learn from This Case
This Indonesia freeze-dried pineapple project shows that fruit freeze-drying equipment should be evaluated by real drying performance, product preparation method, and energy cost.
Product Form Matters
Pineapple slices dry differently from berries, durian pulp, or cooked meals. Slice shape and cutting direction should be tested.
Use the Right Cutting Direction
Round cross-cut slices can expose more capillary openings and support better dehydration efficiency.
Check Energy Consumption
Energy use affects the real production cost. In this case, the energy consumption was 1.73 kWh per kg of fresh pineapple slices.
Match Machine Size to Production Stage
A 20㎡ freeze dryer can be a practical choice for medium-scale commercial tropical fruit production before scaling to larger systems.
Continue Reading
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