Process for peeling peanuts

Abstract

The invention relates to a process for peeling peanuts comprising following steps: 1) peanut raw materials are properly cleaned to ensure that the weight ratio of impurities and unqualified kernels isno more than 6%; 2) qualified peanuts are selected and spread to be thinner, and put into a freezer for refrigeration for more than 25 minutes; 3) the frozen peanuts are immediately sent to a microwave oven for heating and drying, and the heating temperature is controlled between 65 DEG C and 90 DEG C, and dried until the peanut water content is 2% to 5%; 4) the heated peanuts are cooled by coldair, and the cold air is transported in a smooth metal wall tube with multiple spirals; 5) the cooled peanuts are sent to a peanut sheller for shearing and extrusion into a shell- kernel mixture; 6) the shell- kernel mixture is sent to a screen sieve inside a separating device; under the joint action of the vibrating screen and the fan, the shell material with low density of the upper layer is discharged by the airflow of the fan, and the peanut kernel with large density of the lower layer is discharged from the discharge port of the separation device and is collected for use. Its one-time shelling rate can reach 95%, and the shelling effect is good.

Description

technical field [0001] The invention relates to the technical field of peanut oil production, in particular to a peanut peeling process. Background technique [0002] Peanut oil is one of the traditional edible oils in my country. It has high nutritional value and is rich in fat and protein. It also contains thiamine, riboflavin, niacin and other vitamins, and is also rich in minerals. In particular, it contains essential amino acids, which can promote the development of brain cells and enhance memory. Therefore, peanut oil is very popular among people. [0003] In the peanut oil production process, the peeling of peanuts has gradually become an important step in the oil making process. At present, the traditional peanut peeling methods mainly contain the following types: [0004] 1. Artificial peeling: Although this method can guarantee the quality of peeling, its peeling efficiency is extremely low, which cannot meet the needs of modern peanut oil processing. [0005] 2....

AI Technical Summary

Problems solved by technology

However, due to the different sizes of peanuts, seed leakage is prone to occur, resulting in a low shelling rate

If the peanuts are first graded and then peeled, although the peeling effect can be improved, the graded treatment process is too complicated, which greatly increases equipment investment and production costs.

[0007] 4. High-temperature peeling process, whose baking temperature is as high as 200-250°C, denatures peanut protein, and oil is prone to thermal oxidation polymerization, producing toxic glyceride dimers, and the quality of peeled peanut products is low, and the peroxide value is low. High, poor antioxidant capacity, short shelf life