How can to remove cashew nut kernel of its shell?
we need atoumatic machinery for do this.
- 1 decade agoFavorite Answer
Be forewarned.. Cashews in the shell are POISONOUS, it takes a very specific process to remove (safely) the toxins and extract yon nut.
- Anonymous1 decade ago
There are two ways to remove the cashew shell, the inside fluid and the thin brown skin. Washing the raw nut in a water bath and storing it in moist heaps or silos for 12 hours makes the shells brittle as long as they maintain 7% to 10% humidity. The shell will rupture and liberate cardol fluid.
The older method is to roast the whole nut in shallow pans over an open charcoal fire with constant agitation. The process was used in native marketplaces and was dangerous and disagreeable. Shells burst, spurting the caustic fluid and releasing clouds of acrid fumes which blistered the skin. At the same time, the heat caused the caustic fluid to dissipate.
Modern extraction methods are to put the nuts in a large perforated cylinder which rotates at a declining angle above the heat. As the nut travels down through the roasting cylinder, the liquid flows from the shell and is collected in troughs and commercially sold. Some kernels get scorched because they become overheated near the bottom of the pile. These become second and third grades in quality. As the nuts emerge from their journey, they are water sprayed and set aside to cool and dry.
Nut cracking in small batches is done manually by native laborers. They place the nut on a hard flat stone and crack the brittle shell, hitting it with a wooden mallet.