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Preparation method of unsaturated fatty acid in macadamia nut oil

A kind of unsaturated fatty acid and unsaturated technology, applied in the field of preparation of unsaturated fatty acid in macadamia nut oil

Pending Publication Date: 2021-04-27
JIANGSU TIANSHENG PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the method for efficiently extracting unsaturated fatty acids from macadamia nut oil has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] S1: Transesterification: add 10kg macadamia nut oil to the ethanol solution of NaOH, the ethanol solution of NaOH is composed of NaOH and ethanol (NaOH is dissolved in ethanol), and the mass ratio is: macadamia nut oil: NaOH: ethanol = 1: 0.01 ︰6, reflux at 75°C for 5 hours, recover ethanol, and take the supernatant (the lower layer is glycerol);

[0036]S2: Urea inclusion complex (one-time urine bag): add the supernatant obtained in S1 to 95% ethanol-water solution of urea, oil (ie supernatant): urea: 95% ethanol-water solution = 1: 2: 4 (mass ratio), heat and stir at 60°C for 30 minutes, then lower the temperature to 10°C at a cooling rate of 0.5°C per minute, and stir at this temperature for 4 hours;

[0037] S3: Collection of unsaturated fatty acid esters: filter the product of S2 under reduced pressure at 10°C to obtain the filtrate (i.e. the first filtrate) and filter cake (i.e. the first filter cake), and recover the solvent from the filtrate (i.e. for the filtra...

Embodiment 2

[0043] Add 10kg macadamia nut oil into the methanol solution of NaOH, wherein the mass ratio is: macadamia nut oil: NaOH: methanol = 1:0.01:4, reflux at 70°C for 5h, recover ethanol, take the supernatant (the lower layer is glycerol ); add the supernatant to 95% ethanol-water solution of urea, oil: urea: 95% ethanol-water = 1: 2.4: 4, heat and stir at 60°C for 30min, then cool down at a cooling rate of 0.5°C per minute to 10°C, stir at this temperature for 3 hours; then filter under reduced pressure at 10°C, recover the solvent from the filtrate, add 4 times the solvent to the obtained product to dissolve in 50°C water, separate layers, release the lower layer, and add 10% hydrochloric acid to the upper layer to adjust the pH The value is weakly acidic (pH 6), washed with water to neutral, and centrifugally dried; the filter cake is added with 3 times the weight of 85% ethanol-water, and the second urine bag and collection (repeat the previous urea inclusion operation and unsat...

Embodiment 3

[0045] Add 10kg of macadamia nut oil into the ethanol solution of NaOH, wherein the mass ratio is: macadamia nut oil: NaOH: ethanol = 1: 0.02: 7, reflux at 80°C for 6 hours, recover ethanol, and take the supernatant (the lower layer is glycerol ); add the supernatant to 95% ethanol-water solution of urea, oil: urea: 95% ethanol-water = 1: 2.7: 4, heat and stir at 60°C for 40min, and then cool down at a cooling rate of 0.5°C per minute to 8°C, stir at this temperature for 6 hours; then filter under reduced pressure at 10°C, recover the solvent from the filtrate, add 3 times the solvent to the obtained product to dissolve in 50°C water, separate layers, release the lower layer, and add 10% hydrochloric acid to the upper layer to adjust the pH The value is weakly acidic (pH 6), washed with water to neutral, and centrifugally dried; add 4 times the weight of 85% ethanol-water to the filter cake, and make a second urine bag (repeat the previous urea inclusion operation and unsaturat...

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PUM

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Abstract

The invention relates to a preparation method of unsaturated fatty acid in macadamia nut oil, and belongs to the technical field of pharmaceutical chemicals. The method comprises the following steps of: carrying out ester exchange; carrying out urea inclusion; recovering unsaturated fatty acid ester; carrying out secondary inclusion and secondary recovery of unsaturated fatty acid ester; separating urea from a filter cake; and hydrolyzing to obtain the unsaturated fatty acid. Compared with the prior art, the method is clear in process, simple and low in cost, the purified product is good in color and high in yield, and unsaturated fatty acid ester and fatty acid can be extracted to the maximum extent.

Description

technical field [0001] The invention relates to a preparation method of unsaturated fatty acid in macadamia nut oil, belonging to the technical field of medicine and chemical industry. Background technique [0002] Macadamia nuts, also known as macadamia nuts, have an oil content of up to 75%, of which unsaturated fatty acids account for about 85%, and most of them are monounsaturated fatty acids. The unsaturated fatty acids are: palmitoleic acid (about 15%), oleic acid (about 65%), linoleic acid, arachidic acid, etc., saturated fatty acids are myristic acid, palmitic acid, stearic acid, arachidic acid, etc. [0003] Studies have shown that monounsaturated fatty acids can regulate blood lipids and lower cholesterol; they can also reduce oxidative stress and excessive inflammatory responses in critically ill patients. Women whose diet is rich in monounsaturated fatty acids have different degrees of reduction in the incidence of stroke, coronary heart disease and cardiovascul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/10C11C3/00
CPCC11C3/10C11C3/00
Inventor 季浩胡亚京阚建伟窦长清孔繁博
Owner JIANGSU TIANSHENG PHARMA
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