Processing method of soybean oil

A processing method, soybean oil technology, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of high loss of neutral oil, large amount of decolorizing agent, high cost, etc., to reduce the loss of neutral oil, reduce the amount of white clay, low cost effect

Pending Publication Date: 2022-07-29
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the existing method for refining soybean oil has the problems of large energy consumption, high cost, large amount of decolorizing agent, and large loss of neutral oil

Method used

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  • Processing method of soybean oil

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preparation example Construction

[0029] Step 1. Preparation of crude soybean oil: crude soybean oil is prepared by extrusion puffing and leaching. The main indicators of the obtained crude soybean oil are as follows: it has the proper smell and taste of crude soybean oil, has no peculiar smell, and contains impurities <0.2% , solvent residue <100mg / kg, acid value ≤4mg / g, peroxide value ≤0.25g / 100g; the triglyceride content in crude oil is about 94.4%, the phospholipid content is about 3.7%, and the unsaponifiable matter content is 1.3% ~1.6%, free fatty acid content is 0.3~0.7%, and hydrocarbon content is about 0.38%.

[0030] In step 2, the crude soybean oil obtained in step 1 is subjected to a long mixing alkali refining process. 85% phosphoric acid, the amount of addition is 0.05-0.15% of the oil weight, and the reaction is 15-30 minutes after being homogenized and mixed by a mixer; The lye solution with a concentration of 2-3%, the controlled addition amount is 1-3% of the oil weight, and the reaction is...

Embodiment 1

[0035] step one

[0036] That is, the preparation of soybean crude oil is obtained by extrusion puffing and leaching. The obtained crude oil should have the proper smell and taste of soybean crude oil, no peculiar smell, impurity content <0.2%, solvent residue <100mg / kg, acid value≤4mg / g, peroxide value≤0.25g / 100g. The triglyceride content in the crude oil is about 94.4%, the phospholipid content is about 3.7%, the unsaponifiable matter content is 1.3-1.6%, the free fatty acid content is 0.3-0.7%, and the hydrocarbon content is about 0.38%.

[0037] Step 2

[0038] The obtained crude soybean oil was heated to 70°C in a storage tank, phosphoric acid with a concentration of 85% was added, and the addition amount was 0.10% of the oil weight, and the reaction was held for 15 minutes after being homogenized and mixed by a mixer; The heat exchanger cools the oil temperature to 40°C, then adds lye solution with a concentration of 2%, and controls the addition amount to be 1.5% by ...

Embodiment 2

[0046] step one

[0047] That is, the preparation of soybean crude oil is obtained by extrusion puffing and leaching. The obtained crude oil should have the proper smell and taste of soybean crude oil, no peculiar smell, impurity content <0.2%, solvent residue <100mg / kg, acid value≤4mg / g, peroxide value≤0.25g / 100g. The triglyceride content in the crude oil is about 94.4%, the phospholipid content is about 3.7%, the unsaponifiable matter content is 1.3-1.6%, the free fatty acid content is 0.3-0.7%, and the hydrocarbon content is about 0.38%.

[0048] Step 2

[0049] The obtained crude soybean oil was heated to 70°C in a storage tank, phosphoric acid with a concentration of 85% was added, and the addition amount was 0.10% of the oil weight, and the reaction was held for 15 minutes after being homogenized and mixed by a mixer; The heat exchanger cools the oil temperature to 40°C, then adds lye solution with a concentration of 2%, and controls the addition amount to be 1.5% by ...

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Abstract

The invention discloses a processing method of soybean oil, and belongs to the technical field of grease processing. The method comprises the following steps: step 1, preparing soybean crude oil; step 2, performing long-term mixing alkali refining treatment on the crude soybean oil, further performing vacuum drying, adding a filter aid diatomite, and performing reduced-pressure filtration to obtain deacidified soybean oil; step 3, carrying out visible light illumination pretreatment on the deacidified soybean oil; 4, activated clay is added into the deacidified soybean oil subjected to illumination pretreatment for decoloring treatment, and decolored soybean oil is obtained; and step five, deodorizing the decolored soybean oil to obtain the finished product soybean oil. The soybean oil processing method is good in decoloring effect, safe, environmentally friendly, convenient to operate, low in cost, high in refining rate and suitable for soybean oil processing production.

Description

technical field [0001] The invention specifically relates to a processing method of soybean oil, which belongs to the technical field of oil processing. Background technique [0002] Soybean oil is prepared from soybeans by pressing, leaching and other methods, and is a common edible oil in the world. Soybean (Soybean), belonging to the leguminous family, is an annual herb, originating in my country and belonging to a high-protein oil plant, which contains 34-40% of protein and 15-22% of fat. Soybean oil has excellent fatty acid composition, containing 48-59% of linoleic acid, 17-30% of oleic acid, 4.2-11% of linolenic acid, and rich in unsaturated fatty acids. In addition to a reasonable fatty acid composition, soybean oil also contains relatively abundant lipid concomitants. The unsaponifiable matter content of soybean oil was 1.45%, of which 16% were sterols and 8.5% were tocopherols. 52% of soybean oil sterol is β-sitosterol, 25% is campesterol and 23% is stigmasterol...

Claims

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Application Information

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IPC IPC(8): C11B3/06C11B3/10C11B3/12C11B3/00
CPCC11B3/06C11B3/008C11B3/001C11B3/10C11B3/12
Inventor 刘元法叶展罗舒凡
Owner JIANGNAN UNIV
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