Waln

Fruits   walnut  represent roundish large single odnosemyanny  stone fruit . At approach of a maturity the external thick green peel dries up, bursts, separates from a stone, bursts and reveals. In the course of drying the brown shell of a stone becomes rigid and fragile. Under a shell the kernel which is usually consisting of two half divided by a partition consists. Kernels of walnuts are widely used after full maturing — eaten as the valuable food product containing  proteins  and irreplaceable  fatty acids . The cleared kernels of stones of walnut are covered with the thin brown cover containing  antioxidants which protect  kernels rich with fats from influence of atmospheric  oxygen , preventing thus  rancidification ^[1] .