Research and application status of nut shelling method
Nuts are rich in nutrients, and most of them have medicinal value, which is favored by people. With the improvement of people's living standards, their market demand is increasing year by year.
Nuts are a special kind of agricultural material, usually with a hard or flexible outer shell, such as walnuts, chestnuts, almonds, lotus seeds, ginkgo, pine nuts, seeds and so on. The outer shell of the nut is mainly composed of lignin, cellulose and hemicellulose. It is characterized by hard texture and irregular shape, which makes it difficult to achieve high quality peeling of the shell and nuts.
Therefore, nut mechanical peeling has always been an important technical problem facing the nut deep processing industry. The composition and properties of the shells of different kinds of nuts are quite different, which leads to great differences in mechanical properties, and the method of shelling is not the same.
1 nut mechanical peeling method type
Mechanical peeling of nuts is achieved by mechanically applying force to the nuts, breaking the shells, and squeezing, smashing, shearing or colliding the nuts to achieve separation of the kernels from the shells. At present, according to the principle of nut shelling, the mechanical shelling method can be divided into extrusion method, impact method, tearing method and grinding method.
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