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Low-temperature refining technology for plant oil through four-step method

A low-temperature refining, four-step technology, applied in the direction of oil/fat refining, fat production, etc., can solve the problems of vitamin, long-chain unsaturated fatty acid destruction, carcinogen styrene-to-propanol ratio and trans fatty acid, and high input cost of production equipment , to achieve the effect of improving oil quality, improving flavor and stability, and high production efficiency

Pending Publication Date: 2019-06-14
内蒙古金格勒食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing vegetable oil refining process has the following disadvantages: 1. The vitamins and long-chain unsaturated fatty acids in the crude oil are destroyed, and high-temperature refining is likely to form carcinogens such as styrene-to-propylene ratio and trans fatty acids; 2. The processing process is long and the production High equipment investment cost; 3. The decolorization and deodorization process has high operating temperature and high energy consumption; 4. Chemical alkali refining deacidification to remove free fatty acids requires a large amount of lye and washing water, which increases production costs; 5. Using existing refining methods The obtained vegetable oil, due to incomplete removal of components such as wax (fatty acid and fatty alcohol), vegetable oil polymer and saturated triglyceride, is prone to turbidity during storage and sales, which affects the quality of oil

Method used

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  • Low-temperature refining technology for plant oil through four-step method
  • Low-temperature refining technology for plant oil through four-step method
  • Low-temperature refining technology for plant oil through four-step method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: A four-step low-temperature refining process for vegetable oil, which includes the following steps: (1) hydration; (2) purification; (3) purification; (4) winterization;

[0031] (1) Hydration: The crude oil is heated to 55°C, and then the gradient water addition method is adopted. The total water quality is twice the gum content in the crude oil, and the water temperature is controlled at 10°C higher than the oil temperature to obtain the hydrated grease ; Using the hydration method of the present invention to remove the phospholipids and part of the protein and gum in the crude oil, ensure the quality of the oil, and extend the shelf life of the vegetable oil to a greater extent.

[0032] The specific steps of the gradient water addition method are:

[0033] The quality of the first water added is 50% of the total quality of water added. During the process of adding water, stir at 60 rpm for 20 minutes to make the hydrophilic phospholipids rapidly absorb water, sw...

Embodiment 2

[0048] Example 2: A four-step low-temperature refining process for vegetable oil, which includes the following steps: (1) hydration; (2) purification; (3) purification; (4) winterization; wherein,

[0049] (1) Hydration: The crude oil is heated to 72°C, and then a gradient water addition method is used. The total water quality is 3 times the gum content in the crude oil. The water temperature is controlled at 13°C higher than the oil temperature to obtain the hydrated grease ; Using the hydration method of the present invention to remove the phospholipids and part of the protein and gum in the crude oil, ensure the quality of the oil, and extend the shelf life of the vegetable oil to a greater extent.

[0050] The specific steps of the gradient water addition method are:

[0051] The quality of the first water added is 60% of the total quality of water added. During the process of adding water, stir at 70 rpm and stir for 30 minutes to make the hydrophilic phospholipids rapidly absor...

Embodiment 3

[0066] Example 3: A four-step low-temperature refining process for vegetable oil, which includes the following steps: (1) hydration; (2) purification; (3) purification; (4) winterization;

[0067] (1) Hydration: The crude oil is heated to 60°C, and then a gradient water addition method is used. The total water quality is 2.5 times the gum content in the crude oil, and the water temperature is controlled at 12°C higher than the oil temperature to obtain hydrated grease ; Using the hydration method of the present invention to remove the phospholipids and part of the protein and gum in the crude oil, ensure the quality of the oil, and extend the shelf life of the vegetable oil to a greater extent.

[0068] The specific steps of the gradient water addition method are:

[0069] The quality of the first water added is 55% of the total quality of water added. During the process of adding water, stir at 65 rpm for 25 minutes to make the hydrophilic phospholipids rapidly absorb water, swell, ...

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Abstract

The invention discloses a low-temperature refining technology for plant oil through a four-step method. The low-temperature refining technology includes the following steps: (1) hydration, (2) depuration, (3) purification and (4) winterization. The refining technology is completed at the temperature lower than 100 DEG C, high-temperature oxidation, vitamin loss and formation of benzopyrene and trans-fatty acid are avoided, the grease quality is greatly improved, and meanwhile, energy consumption is reduced; the technological process is short, the production efficiency is high, equipment inputis less, and the equipment input is reduced by nearly 30% compared with a conventional technology; a gradient water-adding method is adopted in hydration, full absorption and settlement of phospholipids and part of proteins and colloids are ensured, alkali adding and washing are not needed, and thus the raw material cost is lowered; and in the purification technology, depurated grease is decoloredthrough activated carbon, so that the peroxide value content in the grease is decreased, in this way, it can be ensured that plant oil is bright in color, and the shelf life of the plant oil is prolonged more effectively.

Description

Technical field: [0001] The invention relates to a vegetable oil refining process, in particular to a four-step low-temperature refining process for vegetable oil. Background technique: [0002] Vegetable oil refining is the refining of crude oil obtained by pressing, leaching or water substitution. The main component of crude oil is a mixture of triglycerides and fatty acid esters. In addition, it also contains water, solid impurities, and colloidal impurities ( Phospholipids, proteins, carbohydrates), fat-soluble impurities (free fatty acids, pigments, gossypol, waxes, hydrocarbons), toxic substances (aflatoxins, polycyclic aromatic hydrocarbons, pesticides). The presence of these impurities not only affects the edible value and safe storage of vegetable oil, but also brings difficulties to deep processing. Therefore, it is necessary to refine the crude oil to remove the impurities in the crude oil to obtain refined vegetable oil. [0003] Existing vegetable oil refining require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/10
Inventor 杜云芳刘艳秋王志明
Owner 内蒙古金格勒食品有限公司
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