Process for extracting alpha-linolenic acid

An extraction method and a technology of linolenic acid, which are applied in the separation/purification of carboxylic acid compounds, fatty acid production, fatty acid preparation/refining, etc., can solve the problems of high process requirements, complex production process, high pressure, etc., and achieve process simplification, Easy operation and high oil yield

Inactive Publication Date: 2009-01-07
TONGWEI XIAOLING TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology extracting high-purity alpha linoleic acid (ALA) from flaX seed without losing its nutritional value or affecting other beneficial ingredients like vitamins). It also involves carrying out various steps such as mixing fats together beforehand, adding urease into mixture liquid after separation, crystallizing it, removing impurities during purification processes, collecting crude beta casein fractions, and finally subjecting them to further processing techniques that improve their quality and usability. Overall, this new technique provides an efficient way to produce highly pure oily materials while maintaining good taste characteristics.

Problems solved by technology

Technological Problem addressed in this patented technical problem relates to extracting alpha linolenic (α) oleolite containing long chain polyunsaturate aliphatic acids such as cis-4 Linseed Oil (CSO), n-6 Solutolux Experimental Methods, High Pressured Liquid Chromatography(HPLC). Current techniques involve expensive equipment and complex processes like multiple steps involving different chemical reactions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1, leaching flax oil: put the flax seeds with 6.3% water content and 0.3 mm thickness into the leaching tank; leaching with No. 4 solvent to produce flax oil; process conditions, flax seeds: No. 4 solvent is 1: 0.85, and the number of times of leaching is 6 times. The leaching time was 160min to obtain the mixed oil; the mixed oil was put into the evaporating tank, and the solvent was naturally precipitated under normal temperature and reduced pressure to -0.07MPa; the No. 4 solvent in the mixed oil was separated from the linseed oil, and the linseed oil containing 45% α-linolenic acid was obtained; The oil yield is 34.5%;

[0019] 2. Saponification and hydrolysis: put 50g of sesame oil into a 500ml flask, add 250ml of 7.5% KOH ethanol solution, heat and stir on a water bath at 60°C for 1 hour, remove the flask and cool to room temperature, recover ethanol in a vacuum, add 120g of water to dissolve the saponified product Adjust the pH to 2 with 10% HCl again, transfer t...

Embodiment 2

[0022] 1. Extract flax oil: put linseeds with 9% water content and 0.4mm thick billet into the leaching tank; leaching with No. 4 solvent to produce flax oil; process conditions, flax seeds: No. 4 solvent is 1: 1.2, and the number of leaching times is 6 times. The leaching time was 150min to obtain the mixed oil; the mixed oil was put into the evaporating tank, and the solvent was naturally precipitated under normal temperature and reduced pressure to -0.08MPa; the No. 4 solvent in the mixed oil was separated from the linseed oil, and the linseed oil containing 45% α-linolenic acid was obtained; The oil yield is 34%;

[0023] 2. Saponification and hydrolysis: put 50g of sesame oil into a 500ml flask, add 250ml of 7.5% KOH ethanol solution, heat and stir in a 65°C water bath for 1h, remove the flask and cool to room temperature, recover ethanol in a vacuum, add 100g of water to dissolve the saponified product; Then use 10% HCl to adjust the pH to 3, transfer it to a separatory ...

Embodiment 3

[0026] 1, leaching flax oil: put the flax seeds with 8% water content and 0.4mm thickness of billet into the leaching tank; leaching with No. 4 solvent to produce flax oil; process conditions, flax seeds: No. 4 solvent is 1: 1, and the number of times of leaching is 6 times. The leaching time is 140min to obtain the mixed oil; the mixed oil is put into the evaporating tank, and is desolvated naturally under normal temperature and reduced pressure to -0.075MPa pressure; the No. 4 solvent in the mixed oil is separated from the flax oil, and the flax oil containing 45% α-linolenic acid is obtained; The oil yield is 33.4%;

[0027] 2. Saponification and hydrolysis: put 50g of sesame oil into a 500ml flask, add 250ml of 7.5% KOH ethanol solution, heat and stir in a water bath at 63°C for 1h, remove the flask and cool to room temperature, recover ethanol in a vacuum, add 150g of water to dissolve the saponified product; Then use 10% HCl to adjust the pH to 2.5, transfer it to a sepa...

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Abstract

The invention relates to an alpha-linolenic acid extraction method, which is carried out according to the following steps: (1) leaching linseed oil: loading linseeds in an extraction tank, extracting linseed oil in a 4<#>solvent for 5 to 6 times for 140 to 160 min to obtain a mixed oil under such a condition that the ratio of linseeds to the 4<#>solvent is equal to 1:(0.85 to 1.2), and reducing the pressure to minus 0.06 to minus 0.08 MPa at the normal temperature to naturally remove the solvent; (2) saponification and hydrolysis: saponifying and hydrolyzing linseed oil under an alkaline condition in an ethanol solvent to obtain mixed fatty acid; and (3) urea clathration: adding 3 weight parts of urea and 6 to 7 weight parts of ethanol in a container, heating to 70 to 85 DEG C, adding one weight part of mixed fatty acid into the container, keeping the temperature for 1 to 1.5 h, freezing in a minus 10 to minus 15 DEG C freezing device for 12 to 15 h, vacuum filtering, evaporating, dissolving washing with water, mixing and standing, layering, drying, etc. to obtain mixed fatty acid containing alpha-linolenic acid 75 to 85%. The method adopts urea clathration once, and has the advantages of simple process and easy implementation.

Description

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Claims

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Application Information

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Owner TONGWEI XIAOLING TRADE
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