Description
Alkaline plant ash creates a hostile environment for microbes, preserving fish, meat, and tubers in Amazonian traditions.
Technical
The high potassium and calcium carbonate content raises pH to 9–11, denaturing bacterial enzymes and inhibiting growth of spoilage organisms. For cassava, the alkaline milieu hydrolyzes cyanogenic glycosides, lowering pH to 4.5–5.0 and converting cyanide precursors to less toxic forms. Controlled sun‑drying further reduces water activity, extending shelf life.
Science
Primary Reaction
Alkaline hydrolysis and microbial inhibition via high pH environment
Sensory Profile
Aroma ()
earthysmokymineralherbalwoody
Origin & History
Civilization
Yanomami, Tukano, Shipibo
Era
pre‑Columbian to present