A narrower margin than fruit — and we engineer for it.
Fish drying is less forgiving than fruit drying. The raw material deteriorates rapidly from the moment of landing, and the consequences of getting it wrong are a food-safety incident, not a quality complaint. Controlled drying replaces guesswork with a validated, documented process.
🐟 Hygienic hot-air dryingKeep the surface open, keep the centre safe.
The temperature ceiling matters. Above roughly 50 °C, fish proteins denature and the surface sets — case hardening — trapping moisture inside a dry shell. The product then tests dry on the surface while remaining wet at the centre, which is exactly the condition in which spoilage organisms survive a nominally completed drying cycle.
| Thickness | 15–20 mm |
| Initial moisture | 75–80% |
| Final moisture | 15–20% |
| Loading density | 25–30 kg/m² |
| Drying temperature | 45–50 °C |
| Air velocity | 2.0–2.5 m/s |
| Relative humidity | 35–45% |
| Cycle time | 24–30 hours |
| Daily capacity | ~1,000 kg |
| Product yield | ~75% |
Hygiene infrastructure
Fish processing demands infrastructure that fruit processing does not:
- Clean-zone separation — cleaning station, preparation area and loading zone, physically separated from general zones.
- Personnel hygiene — sensor-operated hand-wash stations, boot-wash stations, change rooms with lockers and separate clean-uniform storage.
- Surfaces — stainless-steel work surfaces, non-porous floors, curved wall-to-floor joints, washable walls.
- Drainage — dedicated drainage with grease traps, separate from other streams.
- Waste handling — sealed containers, chilled storage, daily disposal, active odour control.
- Air management — positive pressure in processing areas, air locks between zones, regular air-quality monitoring.
Quality & safety metrics
- Salt content — consistency across the batch.
- Moisture levels — uniform, verified at multiple points.
- Protein preservation — nutritional value maintained.
- Microbial safety — validated pathogen reduction, documented per batch against WHO food-safety guidance ↗.
- Texture quality — appropriate to the target market’s expectations.
Explore further
- Hot-air generators — indirect heat and humidity control for low-temperature fish drying.
- Tunnel dryers and batch units — hygienic, food-grade chambers.
- Fruit & vegetable drying — the same platform, different parameters.
- Worked use cases — engineered configurations across the region.
- Food-safety standards: Codex Alimentarius (FAO/WHO) ↗
Request a fish drying system quote
We design the hygiene infrastructure and drying parameters together, for domestic or export specification.
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