Method for using molecular distillation to extract nervonic acid from acer truncatum buge oil
A technology of molecular distillation and Yuanbao maple, which is applied in the field of extraction of nervonic acid, can solve the problems of only 55% purity of nervonic acid and high distillation temperature, and achieve the effect of high nervonic acid content, low operating temperature, and favorable absorption and utilization
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Embodiment 1
[0022] (1) Put 1,000 grams of maple ingot seeds into an extractor, extract 120 grams of maple ingot oil through supercritical carbon dioxide extraction, extraction temperature is 60°C, pressure is 7MPa, separation temperature is 30°C, pressure is 7MPa;
[0023] (2) After mixing 30 milliliters of absolute ethanol with 100 milliliters of ingot maple oil, add 1.2 grams of NaOH, and react for 3.5 hours at a temperature of 60° C., the product is distilled to remove unreacted ethanol, and the catalyst is eluted with water after separation of glycerin to obtain Ingot Maple Oil Ethyl Ester 75ml;
[0024] (3) Separation of nervonic acid ethyl ester: carry out molecular distillation to the obtained ingot maple oil ethyl ester under different vacuum degrees and temperature conditions, operating condition is:
[0025] series
[0026] (4) Mix fatty acid ethyl ester obtained by five-stage molecular distillation with excess NaOH aqueous solution, heat and reflux for 1.5 hours for s...
Embodiment 2
[0028] (1) Put 1,000 grams of maple ingot seeds into an extractor, extract 120 grams of maple ingot oil through supercritical carbon dioxide extraction, extraction temperature is 60°C, pressure is 30MPa, separation temperature is 60°C, pressure is 7MPa;
[0029] (2) After mixing 25 milliliters of absolute ethanol with 100 milliliters of ingot maple oil, add 2 grams of NaOH, and react for 2.5 hours at a temperature of 65° C., the product is distilled to remove unreacted ethanol, and the catalyst is eluted with water after separation of glycerin to obtain Ingot Maple Oil Ethyl Ester 75ml;
[0030] (3) Separation of nervonic acid ethyl ester: carry out molecular distillation to the obtained ingot maple oil ethyl ester under different vacuum degrees and temperature conditions, operating condition is:
[0031] series
[0032] (4) Mix fatty acid ethyl ester obtained by five-stage molecular distillation with excess NaOH aqueous solution, heat and reflux for 1.5 hours for sa...
Embodiment 3
[0034] (1) 500 grams of maple ingot seeds are pulverized and extracted with No. 6 solvent oil to obtain 70 grams of maple ingot oil;
[0035] (2) After mixing 70 milliliters of absolute ethanol with 70 milliliters of ingot maple oil, add 55 milliliters of sodium ethylate, and react for 5 hours at a temperature of 50° C., the product is distilled to remove unreacted ethanol, and the catalyst is eluted with water after separating glycerin. Obtain 55 ml of ingot maple oil ethyl ester;
[0036] (3) Separation of nervonic acid ethyl ester: carry out molecular distillation to the obtained ingot maple oil ethyl ester under different vacuum degrees and temperature conditions, operating condition is:
[0037] series
[0038] (4) Mix the nervonic acid ethyl ester obtained by five-stage molecular distillation with excess KOH aqueous solution, heat and reflux for 2 hours for saponification, add hydrochloric acid to adjust the pH value to 2, wash with water to neutrality, extract...
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