This research was carried out using 6 samples of banana peels from 6 municipalities of Kinshasa city in Democratic Republic of Congo, with a view to manufacturing indigenous salt.
These samples of determined masses, dried in the sun for a week, calcined in the open air gave more or less homogeneous ashes which, dissolved in hot distilled H_2 O in beakers of variable volumes (500, 600 mL), then filtered made it possible to obtain filtrates. These, subjected to heating at 300° C and evaporation, made it possible to obtain finished products with masses varying between 5 to 9 g, for durations ranging from 1h30 to 3h.
The hygroscopic indigenous salt was kept suspended over a hearth until completely dry and was well stored for possible use.