Method for extracting lipid components

A lipid and extraction tank technology, applied in chemical instruments and methods, production of fat, recovery of fatty substances, etc., can solve the problems of high equipment requirements, flammable and explosive, limited production scale, etc., and achieve stable chemical properties and extraction efficiency. High, good product quality effect

Active Publication Date: 2012-01-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In recent years, some new oil extraction processes have also been developed. There is a method of using water instead of solvent to simultaneously produce oil and protein with the help of enzymes. This method is still in the experimental stage in the world. Although the reaction conditions Mild, the main quality indicators of the product are similar to those of the solvent extraction method, but the yield of oil is only 75%~90%, and the yield of protein is about 65%; with supercritical CO 2 The extraction method has the highest product quality, high oil yield, and low temperature during processing, but this method requires high equipment, limited production scale, and high production cost, which is not suitable for industrial production; there is also a method called The method of subcritical fluid extraction is a te

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take peanuts with an oil content of 40% by weight, go through impurity removal, shelling, drying, and embryo pressing (the temperature of peanuts should be kept ≤50°C during the process), and then put the embryo flakes into the extraction tank, and vacuumize to below 0.01MPa Finally, add liquefied perfluoropropane that is 1.5 times the weight of the raw material at an operating temperature of 30°C (the operating pressure is the corresponding vapor pressure), and after 60 minutes each time and a total of 3 extractions, a mixture of oil and solvent is obtained; oil and solvent The mixture is decompressed and gasified. After the gauge pressure reaches 0MPa, it is vacuumized and precipitated. When the gauge pressure is -0.09MPa and the temperature is 40~50℃, it is maintained for 30 minutes to obtain the precipitated peanut crude oil, which contains residual solvent ≤ 30mg / kg, impurity ≤0.3%.

[0019] The defatted peanut meal containing solvent is decompressed and gasified,...

Embodiment 2

[0021] Take soybeans with an oil content of 20% by weight, remove impurities, peel, dry, crush, soften, and press embryos (the temperature of soybeans should be kept ≤70°C during the process), and then put the embryo flakes into the extraction tank and vacuumize to 0.01 When it is below MPa, add liquefied perfluorobutane twice the weight of raw materials, operate at 60°C (operating pressure is the corresponding vapor pressure), and extract oil and solvent mixture for 30 minutes each time for a total of 3 times; The mixture of oil and solvent is gasified under reduced pressure, and the gauge pressure reaches 0MPa, and then vacuumizes for precipitation. When the gauge pressure is -0.09MPa and the temperature is 50~60℃, keep for 50 minutes to obtain the crude soybean oil containing residual solvent. ≤50mg / kg, impurity ≤0.3%.

[0022] The solvent-containing defatted soybean meal is decompressed and gasified, and the gauge pressure reaches 0MPa, and then vacuumized for precipitatio...

Embodiment 3

[0024]Take hemp seeds with an oil content of 28% by weight, after screening to remove organic and inorganic impurities and magnetic separation to remove metal impurities, dry them with hot air at a temperature of 40~50°C until the water content drops to ≤8% by weight, and use shelling Machine crushing (keep the temperature of the hemp seeds ≤ 50°C during the crushing process), and then screen the crushed hemp seeds with a sieve, the hemp seeds pass through the sieve, and the shells are blocked by the sieve to obtain shelled hemp Seed kernels; use the embryo pressing machine to press the hemp seed kernels into embryo flakes; put the embryo flakes into the extraction tank, vacuumize to below 0.01MPa, add liquefied perfluorobutane twice the weight of raw materials, and operate at 40 ℃ (the operating pressure is the corresponding vapor pressure), after 20 minutes each time, a total of 4 extractions, the oil and solvent mixture is obtained; the oil and solvent mixture is gasified un...

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PUM

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Abstract

The invention discloses a method for extracting lipid components. By employing a subcritical extraction technology with a polyfluoroalkane low pressure liquefied gas as an extraction medium, the method can conduct lipid component extraction in various raw materials. Making use of the polyfluoroalkane characteristics of stable chemical property, safety and nontoxity, noncombustibility and existence of dissolved lipid components after liquefaction, the method extracts lipid components (oil, lipoid, oil-soluble pigment, essential oil, wax, etc.) from some raw materials with low energy consumption, and also can select an extraction medium with similar polarity. Characterized by high extraction efficiency and good product quality, the method of the invention can realize room temperature or lowtemperature operation in the overall process, and ensure every functional component in the raw materials free from thermal destruction to the utmost. And degreased meal can undergo secondary deep development, thus benefiting for comprehensive utilization of raw materials and realization of high value-added processing. Therefore, the method provided in the invention is of important application value.

Description

technical field [0001] The invention relates to lipid processing technology, in particular to a method for extracting lipid components. Background technique [0002] Lipids are a class of natural organic compounds that contain alkyd esterification structures, are soluble in organic solvents but not in water, are essential nutrients for the human body, and are important components of the human body, including fats and lipids. Commonly referred to as fats include fats and oils, those that are in a solid state at room temperature are called "fat"; those that are in a liquid state are called "oil". Daily edible animal and vegetable oils, such as lard, vegetable oil, soybean oil, and sesame oil, are all fats and oils, that is to say, daily edible oils are fats. Lipids are substances very similar to fats and oils. There are many types, mainly including: lecithin, neurophospholipids, cholesterol and lipoproteins. The so-called lipid components also include some fat-soluble pigmen...

Claims

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Application Information

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IPC IPC(8): C11B1/10C11B1/00C11B1/04C11B9/02C11B11/00C07C49/255C07C45/79C09B61/00C07C33/02C07C29/76
CPCY02W30/74
Inventor 杨继国
Owner SOUTH CHINA UNIV OF TECH
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