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Production method of high-purity linolenic acid

A production method and linolenic acid technology, applied in the production of fat/fat, chemical instruments and methods, and fat production, can solve the problems of incomplete inclusion of saturated fatty acids, loss of unsaturated fatty acids, and low purity, etc. The effect of retaining oil nutrition, less by-products, and high yield

Active Publication Date: 2021-01-01
HEZE ZHONGHEJIANYUAN BIOLOGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the purity obtained by the single urea inclusion method is not very high, because the contact is uneven, some of the required polyunsaturated fatty acids are lost, and the saturated fatty acids are not completely included.
The conventional low-temperature crystallization method is to reduce the raw material to -80°C--20°C. It is difficult to reach this temperature in normal factory production, and the cost is very high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The invention relates to a production method of high-purity linoleic acid. The linseed oil is obtained by washing and dehulling the linseed first. Take 50kg of linseed oil, calculate the theoretical alkali amount of 6.8kg, configure it into 18% NaOH-70% ethanol, stir at 70°C for 1.5h, and cool to room temperature. Add 3 times the mass of 95% ethanol to the soap solution, dissolve it under ultrasound at 200KHz for 2 hours, cool down to room temperature, cool down by gradient cooling, cool at 10°C for 1 hour, keep at -4°C for 2 hours, and filter with suction. Take the filtrate and add 15% hydrochloric acid to adjust the pH to 2-3, stir at room temperature for 1 hour, let stand to separate layers, collect 1 times the volume of fatty acids in the upper layer, and wash with water until neutral. Use ethanol water (volume concentration 95%) to dissolve urea, ratio urea:ethanol 1:4, heat to 75°C and reflux, add fatty acid after the urea is dissolved (weight ratio urea:fatty aci...

Embodiment 2

[0022] The invention relates to a production method of high-purity linoleic acid. The perilla seed oil is obtained by first washing and removing shells from perilla seeds and pressing. Take 100kg perilla seed oil, calculate the theoretical alkali amount of 19.5kg, configure it into 25% NaOH-80% ethanol, stir at 80°C for 1.5h, and cool to room temperature. Add 5 times the mass of 93% ethanol to the soap solution, dissolve it under ultrasound at 150KHz for 3h, cool down to room temperature, cool down with gradient cooling, cool at 8°C for 3h, keep at -2°C for 1h, and filter with suction. Take the filtrate and add 12% hydrochloric acid to adjust the pH to 2-3, stir at room temperature for 1 hour, let stand to separate layers, collect 1 times the volume of fatty acids in the upper layer, and wash with water until neutral. Use ethanol water (volume concentration 88%) to dissolve urea, ratio urea:ethanol 1:5, heat to 80°C and reflux until urea is dissolved, add fatty acid (weight ra...

Embodiment 3

[0024] The invention relates to a production method of high-purity linoleic acid. The linseed oil is obtained by washing and dehulling the linseed first. Take 50kg of linseed oil, calculate the theoretical alkali amount of 6.8kg, configure it into 30% NaOH-50% ethanol, stir at 90°C for 1.5h, and cool to room temperature. Add 2 times the mass of 97% ethanol to the soap solution, dissolve it under ultrasound at 100KHz for 5 hours, cool down to room temperature, cool down by gradient cooling, cool at 5°C for 3 hours, hold at -8°C for 3 hours, and filter with suction. Take the filtrate and add 10% hydrochloric acid to adjust the pH value to 2-3, stir at room temperature for 1.5 hours, let stand to separate layers, collect 1 times the volume of fatty acids in the upper layer and wash with water until neutral. Use ethanol water (volume concentration 80%) to dissolve urea, compare urea:ethanol weight ratio 1:6, heat to 70°C and reflux, add fatty acid after urea is dissolved (weight r...

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Abstract

The invention belongs to the field of food processing, and particularly relates to a production method of high-efficiency and high-purity linolenic acid. The production method comprises the followingsteps that flaxseeds / perilla seeds are cleaned, shells are removed, and the seeds are squeezed to obtain flaxseed oil / perilla seed oil; the flaxseed oil / perilla seed oil is subjected to saponification, ultrasonic dissolution fatty acid salt crystallization, acidification, high-pressure homogeneous urea inclusion, rectification and three-stage molecular distillation to obtain high-purity linolenicacid. According to the method, linseed oil / perilla seed oil is obtained by squeezing linseeds / perilla seeds, linolenic acid is prepared, the obtained linolenic acid content is high (95% or above), thesaturated fatty acid content is almost 0, the monounsaturated fatty acid content is smaller than 1, the efficiency is high, few byproducts are produced, and the method is more suitable for industrialproduction.

Description

technical field [0001] The invention belongs to the field of food processing, in particular to a production method of high-purity linolenic acid. Background technique [0002] Linolenic acid, which belongs to the omega-3 series of polyene fatty acids, is all-cis 9, 12, 15 octadecatrienoic acid, which exists in dark green plants in the form of glyceride, and is the main component of human tissue cells. It can be synthesized, metabolized, and converted into DHA and EPA, which are essential life active factors for the body. α-linolenic acid is the basic substance that constitutes cell membrane and biological enzymes, and plays a decisive role in human health. However, it cannot be synthesized in the human body and must be ingested from the outside. It is an essential nutrient that is necessary for human health but is generally lacking and urgently needs to be supplemented. [0003] Conventional methods for purifying fatty acids mainly include metal ion complexation, molecula...

Claims

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Application Information

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IPC IPC(8): C07C57/12C07C51/02C07C51/42C07C51/44C07C51/43C11B1/06
CPCC07C51/02C07C51/412C07C51/42C07C51/44C07C51/43C11B1/06C07C57/12
Inventor 储文宾程丹丹储亚稳储明合
Owner HEZE ZHONGHEJIANYUAN BIOLOGY TECH CO LTD
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