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Supercritical CO2 extraction method of medlar seed oil

A wolfberry seed oil, supercritical technology, applied in the direction of edible oil/fat, food preparation, food science, etc., can solve the problem of low extraction of α-linolenic acid and γ-linolenic acid, to prevent oxidation and decomposition, use Safe and efficient extraction

Inactive Publication Date: 2009-06-24
JIANGSU JIANGDAYUAN ECOLOGICAL BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method uses the dregs of wolfberry juice as raw materials, which are washed with water, dehydrated, dried, pulverized, supercritically extracted, separated by a separator, rectified by a rectifying column, etc. The process index is: extraction pressure 30-36MPa , the extraction temperature is 45-50°C, and the moisture is reduced to below 12% after drying. 2 The weight percent content of α-linolenic acid in the extracted product is 1-2%, and the weight percent content of γ-linolenic acid is 3-4%, but the extraction amounts of α-linolenic acid and γ-linolenic acid are equal. lower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Dry the wolfberry seeds in an oven at 55°C for 6 hours, the water content of the dried wolfberry seeds is 5%, crush the dried wolfberry seeds through a 40-mesh sieve, and then put the sieved wolfberry seeds into the super Extraction in a critical extraction tank. At a temperature of 43°C and a pressure of 35Mpa, CO 2 Under the condition of flow rate of 12L / min, extracting for 3 hours, wolfberry seed oil was dissolved in supercritical CO 2 In the fluid, it enters the separation tank, and after adjusting the temperature and pressure, it dissolves in supercritical CO 2 Lycium barbarum seed oil in the fluid is separated, CO 2 recycle.

[0024] The effective components in the Lycium barbarum seed oil are detected, wherein the weight percentage of α-linolenic acid is 4.3%, and the weight percentage of γ-linolenic acid is 5.2%.

example 2

[0026] Dry the wolfberry seeds in an oven at 50°C for 5 hours, the water content of the dried wolfberry seeds is 7%, crush the dried wolfberry seeds through a 40-mesh sieve, and then put the sieved wolfberry seeds into the super Extraction in a critical extraction tank. At a temperature of 40°C and a pressure of 40Mpa, CO 2 Under the condition of a flow rate of 8L / min, the extraction was carried out for 4 hours, and the wolfberry seed oil was dissolved in supercritical CO 2 In the fluid, it enters the separation tank, and after adjusting the temperature and pressure, it dissolves in supercritical CO 2 Lycium barbarum seed oil in the fluid is separated, CO 2 recycle.

[0027] The effective components in the Lycium barbarum seed oil are detected, wherein the weight percentage of α-linolenic acid is 3.7%, and the weight percentage of γ-linolenic acid is 4.7%.

example 3

[0029] Dry the wolfberry seeds in an oven at 45°C for 7 hours, the water content of the dried wolfberry seeds is 6%, crush the dried wolfberry seeds through a 40-mesh sieve, and then put the sieved wolfberry seeds into the super Extraction in a critical extraction tank. At a temperature of 50°C and a pressure of 30Mpa, CO 2 Under the condition of a flow rate of 18L / min, the extraction was carried out for 2.5 hours, and the wolfberry seed oil was dissolved in supercritical CO 2 In the fluid, it enters the separation tank, and after adjusting the temperature and pressure, it dissolves in supercritical CO 2 Lycium barbarum seed oil in the fluid is separated, CO 2 recycle.

[0030]The effective components in the Lycium barbarum seed oil are detected, wherein the weight percentage of α-linolenic acid is 3.2%, and the weight percentage of γ-linolenic acid is 4.3%.

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Abstract

The invention discloses a method for extracting boxthorn seed oil by supercritical CO2. The method comprises the following steps: a, drying and grinding boxthorn seeds and loading in extraction kettle; b, injecting the supercritical CO2 into the extraction kettle, and extracting under the temperature of 40-50 degrees centigrade, pressure of 30-40Mpa and CO2 flow rate of 8-18L / min for 2.5-4 hours; c, inducing the CO2 fluid solved with boxthorn seed oil into a separation kettle, separating out the boxthorn seed oil by adjusting temperature and pressure, compressing the CO2 gas and inducing into the extraction kettle for circulation. The invention has a simple process and convenient operation, avoids the organic solvent residue, shortens the extraction time, increases the boxthorn seed oil extraction efficiency, especially increases the contents of alpha-linolenic acid and gamma-linolenic acid in the boxthorn seed oil greatly.

Description

technical field [0001] The invention relates to a method for extracting wolfberry seed oil, in particular to a method for extracting wolfberry seed oil with gas, which belongs to the technical scope of vegetable oil extraction. Background technique [0002] Lycium barbarum is a traditional precious traditional Chinese medicine, which is the fruit of wolfberry. It was first recorded in "Shen Nong's Materia Medica" and listed as top grade. It has the effects of nourishing liver and kidney, benefiting energy and improving eyesight. Li Shizhen of the Ming Dynasty recorded in "Compendium of Materia Medica", "Godberry governs the evil spirits in the five internal organs, quenches thirst in heat, and prevents rheumatism in the week. Take it for a long time to strengthen the muscles and bones, lighten the body and not grow old. It is resistant to cold and heat, lower chest and hypochondrium. It can relieve heat and headache, and repair internal injuries. , great labor deficiency. S...

Claims

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Application Information

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IPC IPC(8): A23D9/02A23L1/212A23L1/28A23L1/30
Inventor 邵兴军丁德华郦宏岩
Owner JIANGSU JIANGDAYUAN ECOLOGICAL BIOLOGICAL TECH
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