Chilli drying systems in Ghana
What the crop demands, what the country imposes, and what that means for capacity.
Ghana grows chilli for domestic consumption and for export to European and UK markets with substantial West African diaspora demand. Export lots are rejected on aflatoxin with some regularity, and the contamination is acquired during drying rather than in the field — chillies spread on the ground pick up mould before they reach a safe moisture.
The situation in Ghana
Better roads, better power and a deeper domestic market than most of its neighbours, and Tema is one of the region’s best-run ports. The constraint here is rarely logistics and usually raw material consistency: Ghana exports a great deal of semi-processed product that loses value because grading and moisture control are done by eye at the point where they should be measured.
Growing regions. Bono and Bono East for cashew and mango, Ashanti and Western for cocoa, the Volta basin for fish
What chilli drying demands
Chilli is bought on colour and on aflatoxin, in that order of visibility and the reverse order of consequence. Ground-dried chilli picks up mould during the drying itself, and a lot that fails on aflatoxin is worthless rather than downgraded. Enclosed drying at 55–62 °C addresses both at once.
Harvest calendar
October to February, following the main rains. The early part of the window still carries humidity, which is exactly when ground drying is riskiest.
The working campaign window as the trade runs it. It shifts a fortnight either way with the rains.
Process parameters
| Parameter | Value |
|---|---|
| Drying temperature | 55–62 °C |
| Final moisture | 8–10 % |
| Yield (fresh : dried) | 6 : 1 |
| Cycle time | 14–20 h |
Sizing starting points from ordinary processing practice, not a validated recipe for your product. Confirm against your own intake and your buyer’s specification.
Worked sizing example
For a unit taking 4 tonnes of fresh product a day, at a yield of 6 : 1:
Illustrative figures calculated from the yield and campaign window above. They size a conversation; they do not describe any existing installation.
Fuel available in Ghana
Cashew shell from Bono, palm kernel shell in the south, and a substantial sawdust resource around Kumasi.
- Base load. Cashew shell · Palm kernel shell · Cocoa pod husk
- Supplement. Coconut shell · Sawdust · Rice husk · Shea cake and shell
See all 27 fuels and their properties
Market and buyer requirements
Domestic, plus export to the UK and EU where aflatoxin limits are enforced at the border. A rejected lot is not downgraded, it is destroyed, so the risk is asymmetric.
Explore further
The systems that hold this profile
Other crops in Ghana
Cocoa · Raw cashew nut · Mango · Tilapia · Shea
Chilli drying elsewhere
Frequently asked questions
How does chilli pick up aflatoxin?
During drying, not in the field. Chillies spread on the ground stay above a safe moisture for long enough for Aspergillus to establish, and once the toxin is present nothing downstream removes it. Enclosed drying at 55–62 °C down to 8–10 % closes the window.
What happens to a rejected export lot?
It is destroyed rather than downgraded, which makes the risk asymmetric: a failed consignment is a total loss, not a discount. On a 4 t/day intake at 6 : 1 that is 670 kg a day of product written off. The asymmetry is what justifies controlled drying on a crop the sun would dry for nothing.
What is the yield on chilli?
About 6 : 1 fresh to dried, so a 4 t/day intake gives roughly 670 kg of dried chilli daily over a 14 to 20 hour cycle. Colour retention matters commercially as much as the safety result — buyers grade on it first.
Size a unit in Ghana
Tell us your daily fresh volume and target output, and we will size the chambers, the burner and the fuel available around your site.
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