Fine processing method for cold pressing of peanut oil

A peanut oil, low temperature technology, applied in the direction of fat oil/fat refining, fat production, fat oil/fat production, etc., can solve the problems of inability to remove aflatoxin and poor purity of peanut oil.

Inactive Publication Date: 2017-05-17
SHANDONG LEYOUYOU PEANUT OIL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the peanut oil obtained by the above-mentioned method has the problem of poor oil purity, and the aflatoxin cannot be removed

Method used

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  • Fine processing method for cold pressing of peanut oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The first step is to remove the red skin of the peanuts, then dry them at 80°C until the moisture content is less than 5%, and then crush them;

[0025] In the second step, the crushed material obtained is sent to a low-temperature press for pressing, the pressing temperature is 45°C, and the pressing chamber pressure of the press is 3.0Mpa to obtain crude oil;

[0026] Step 3: Filter the crude oil with a 100-mesh screen at low temperature to remove particulate matter;

[0027] In the 4th step, add bentonite and diatomite to the filtered crude oil obtained in the 3rd step, and then send it into the ceramic membrane for filtering and degumming treatment. 3%; the molecular weight cut-off of the ceramic membrane is 20000Da, the filtration temperature is 30°C, the filtration pressure is 0.3Mpa, and the average operating flux of the ceramic membrane within 4 hours of operation is 25L / m 2 h;

[0028] Step 5, add activated clay to the ceramic membrane filtrate obtained in st...

Embodiment 2

[0033] The first step is to remove the red skin of the peanuts, then dry them at 90°C until the moisture content is less than 5%, and then crush them;

[0034] In the second step, the crushed material obtained is sent to a low-temperature press for pressing, the pressing temperature is 60°C, and the pressing chamber pressure of the press is 3.5Mpa to obtain crude oil;

[0035] Step 3: Filter the crude oil with a 120-mesh screen at low temperature to remove particulate matter;

[0036] In the 4th step, add bentonite and diatomite to the filtered crude oil obtained in the 3rd step, and then send it into the ceramic membrane for filtering and degumming treatment. 6%; the molecular weight cut-off of the ceramic membrane is 40000Da, the filtration temperature is 30°C, the filtration pressure is 0.5Mpa, and the average operating flux of the ceramic membrane within 4 hours of operation is 22L / m 2 h;

[0037] In the 5th step, add activated clay to the ceramic membrane filtrate obtai...

Embodiment 3

[0042] The first step is to remove the red skin of the peanuts, then dry them at 85°C until the moisture content is less than 5%, and then crush them;

[0043] In the second step, the obtained pulverized material is sent to a low-temperature press for pressing, the pressing temperature is 50°C, and the pressing chamber pressure of the press is 3.2Mpa to obtain crude oil;

[0044] Step 3: Filter the crude oil with a 110-mesh screen at low temperature to remove particulate matter;

[0045] In the 4th step, add bentonite and diatomite to the filtered crude oil obtained in the 3rd step, and then send it into the ceramic membrane for filtering and degumming treatment. 5%; the molecular weight cut-off of the ceramic membrane is 30000Da, the filtration temperature is 30°C, the filtration pressure is 0.4Mpa, and the average operating flux of the ceramic membrane within 4 hours of operation is 28L / m 2 h;

[0046] Step 5, add activated clay to the ceramic membrane filtrate obtained in...

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Abstract

The invention relates to a fine processing method for cold pressing of peanut oil, and belongs to the technical field of peanut oil production. The method comprises the following steps: red skins of peanuts are removed, and crushing treatment is carried out for the peanuts; the peanuts are sent to a low temperature compressor for carrying out pressing, in order to obtain crude oil; the crude oil is filtered by a screen mesh, and sent into a ceramic membrane for carrying out filtering and degumming treatment; activated clay is added into the obtained ceramic membrane filtrate, decolouring treatment is carried out, and after filtering, decolored peanut oil is obtained; vacuum deodorization is carried out for the decolored peanut oil; the deodorized peanut is cooled, an adsorbent is added, hydraulic filtering is carried out for removing solids, and refined peanut oil is obtained. Fine processing treatment is carried out for the peanuts in the cold pressing process, and degumming, deodorization and grease removing treatment are realized, quality of the peanut oil is improved, and the purpose for fine processing of peanuts is realized.

Description

technical field [0001] The invention relates to a low-temperature pressing and finishing method for peanut oil, which belongs to the technical field of peanut oil production. Background technique [0002] Traditional peanut oil is generally produced by high-temperature pressing. With the continuous improvement of people's living standards, higher requirements for dietary health are put forward, and low-temperature pressing peanut oil has entered people's field of vision. Ordinary peanut oil is extracted at a high temperature of 120°C. It has a deep color, high content of saturated fatty acids, and relatively large damage to nutrients. Therefore, long-term consumption of traditional vegetable oil will cause great harm to human health. The low-temperature pressing peanut oil adopts the low-temperature pressing technology at 60°C. The peanut oil produced is pure and clear, with a natural and delicate flavor, and can better retain peanut protein powder, which is conducive to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/06C11B1/04C11B3/00
CPCC11B1/06C11B1/04C11B3/001
Inventor 吴海金延成元臧敬伟李维强刘军杰张永强韩随随刘孝伟
Owner SHANDONG LEYOUYOU PEANUT OIL TECH
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