One of the commonest forms of separ

One of the commonest forms of separating in the food industry is the hand sortingand grading of individual units as in the case of vegetables and fruit. However, becauseof the high cost of labor, mechanical and electronic sorting devices have been developed.Difference in color can be detected with a photocell and off color products rejected. Thiscan be done at enormous speed with automatic rejection of discolored or moldy nuts orkernels of grain that flow past the photocell. Automatic separation according to size iseasily accomplished by passing fruits or vegetables over different size screens, holes, o