Method for preparing ethyl nervonate by using acer-trunctum-bung oil as raw material

Abstract

The invention discloses a method for preparing ethyl nervonate by using using acer-trunctum-bunge oil as a raw material. The method comprises the following steps: carrying out an interesterification reaction on the acer-trunctum-bunge oil and ethanol, and obtaining acer-trunctum-bunge oil ethyl ester; removing a first-stage light component from the acer-trunctum-bunge oil ethyl ester by first-stage rectification, and obtaining a first-stage heavy component; removing a second-stage light component from the first-stage heavy component by second-stage rectification, and obtaining a second-stage heavy component; removing a third-stage light component from the second-glass heavy component by third-stage rectification, and obtaining a third-stage heavy component; purifying the third-stage heavy component, and then obtaining the ethyl nervonate. Compared with the molecular distillation in the prior art, the three-stage rectification adopted by the method for preparing the ethyl nervonate, which is provided by the invention, has higher efficiency and lower energy consumption; moreover, the content of a product is up to 90%; the quality of the product is good; the method is beneficial to industrialized production, and has quite high practicability.

Description

technical field [0001] The invention relates to the field of separation and preparation of chemical raw materials, in particular to a method for preparing ethyl nervate from ingot maple oil. Background technique [0002] Nervous acid was first discovered in the nervous tissue of mammals, so it is named as nervonic acid, and its chemical name is cis-15-tetradecenoic acid. It is an omega-9 long-chain monounsaturated fatty acid with a molecular weight of 366.62 , with a melting point of 42-43°C and a density of 0.887g / cm 3 , The flash point is 375.8°C, and the nervonic acid is white flaky crystal at room temperature. Nervous acids are mainly present in human brain proteins, retina, sperm and nerve tissues in the form of glycosphingolipids and sphingomyelin. Foreign studies have shown that nervonic acid is the core natural component of brain nerve cells and nerve tissues. It is the special substance found in the world that can promote the repair and regeneration of damaged ner...

AI Technical Summary

Problems solved by technology

The patent steps are cumbersome, the yield is low, the pollution is large, and a large amount of organic solvent is used, the separation efficiency is low, the production cost is high, and it is not suitable for technological production

[0006] Chinese patent (disclosure date: January 19, 2011, announcement number: CN101092344B) discloses a method for extracting nervous acid from maple ingot oil by molecular distillation technology. This patent first converts maple ingot oil into fatty acid ethyl ester, Then through the six-stage molecular distillation, ethyl nervate is proposed, but the six-stage molecular distillation has many stages, low efficiency, high energy consumption, and finally only 50% content of ethyl nervate can be obtained.

[0007] Chinese patent (publication date: August 31, 2011, announcement number: CN101429112B) discloses a method for separating the mixture of nervous acid and erucic acid from the molecular distillation of Yuanbao maple oil. It also uses six-stage molecular distillation technology with many stages. , low efficiency, high energy consumption, and finally only 50% ethyl nervate can be obtained. The product is a mixture of ethyl nereunate and ethyl erucate, and subsequent purification steps are required to obtain high-content ethyl nereunate

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