Process for peeling peanuts

A peanut and process technology, applied in the field of peanut oil production, can solve the problems of seed leakage, high roasting temperature, short shelf life, etc., and achieve the effect of improving efficiency and effect, ensuring normal operation, and reducing energy consumption of equipment

Inactive Publication Date: 2018-11-09
马鞍山中粮生物化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A peanut peeling process, the steps comprising:

[0035] 1) Properly clean the peanut raw materials to ensure that the weight ratio of impurities and unqualified grains is ≤6%;

[0036] 2) Select qualified peanuts, spread the peanuts into a layer, and freeze them in a quick freezer for 25 minutes, so that the peanuts can be frozen evenly while the peanuts are frozen quickly, creating favorable conditions for shelling the peanuts;

[0037] 3) Immediately send the frozen peanuts into a microwave oven for heating and drying, the heating temperature is controlled at 65°C to 90°C, and dried until the moisture content of the peanuts is controlled to 2% to 5%;

[0038] 4) The heated peanuts are conveyed to cool down by cold air while they are hot, and the cold air is conveyed in a multi-helical curved smooth metal wall tube;

[0039] 5), the cooled peanuts are sent into the peanut sheller for shearing and extruding into a mixture of shells and kernels;

[0040] 6) Send the m...

Embodiment 2

[0043] A peanut peeling process, the steps comprising:

[0044] 1) Properly clean the peanut raw materials to ensure that the weight ratio of impurities and unqualified grains is ≤6%;

[0045] 2) Select qualified peanuts, spread the peanuts into a layer, and freeze them in a quick freezer at a freezing temperature of -35°C and a freezing time of 40 minutes. Return the frozen peanuts to normal temperature in an environment with a humidity less than 30%, and then freeze them. Repeat freezing 1 time;

[0046] 3) Immediately put the frozen peanuts into a microwave oven for heating and drying, the heating temperature is controlled at 65°C to 90°C, and dried until the moisture content of the peanuts is controlled to 5%;

[0047] 4) Cool the heated peanuts while they are hot through the cold air transport. The cold air transport is carried out in a multi-helical curved smooth metal wall tube. The length of the cold air transport path is 5m, and the surface roughness of the inner wal...

Embodiment 3

[0052] A peanut peeling process, the steps comprising:

[0053] 1) Properly clean the peanut raw materials to ensure that the weight ratio of impurities and unqualified grains is ≤6%;

[0054] 2) After selecting the qualified peanuts, thin the peanuts into a layer and freeze them in a quick freezer at a freezing temperature of -40°C and a freezing time of 45 minutes. Repeat freezing 2 more times;

[0055]3) Immediately put the frozen peanuts into a microwave oven for heating and drying, the heating temperature is controlled at 65°C to 90°C, and dried until the moisture content of the peanuts is controlled to 2%;

[0056] 4) The heated peanuts are cooled while they are hot, and the cold air is transported in a multi-helical curved smooth metal wall tube, wherein the length of the cold air transport path is 10m, and the surface roughness of the inner wall of the metal tube wall is 0.8 ;

[0057] 5), the cooled peanuts are sent into the peanut sheller for shearing and extrudin...

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PUM

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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....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23N5/01A23L5/10A23L3/36
CPCA23N5/01A23L3/36A23L5/15
Inventor 唐宏泉汪建军刘贤顺
Owner 马鞍山中粮生物化学有限公司
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