What You Need to Know
Calcium carbonate from limestone reacts with soluble oxalates (CaC₂O₄ + CaCO₃ → 2CaCO₃ + CO₂) forming insoluble calcium oxalate, while mechanical shear forces rupture cell walls to release bound oxalates. The process increases calcium bioavailability while reducing antinutrient content.
Essential for making safe, palatable cocoyam pastes used as thickeners and doughs in traditional dishes, preventing oral irritation and kidney stone risks.
Key Parameters
Temperature
22°C
18°C - 30°C
Time
30 minutes
15 minutes - 60 minutes
Equipment
Basalt grinding stone (traditional)Granite mortar and pestleStainless steel grinders (modern)
Steps
- 1.
Achu soup base (Bamileke ceremonial cuisine): Creates stable emulsion with palm oil
- 2.
Water fufu (Coastal Cameroon): Enables smooth gelatinization during boiling
The Science
Primary Reaction
Acid-base neutralization