A method for extracting and separating eucommia seed oil and eucommia gum from eucommia samara

Abstract

The invention discloses a method for extracting and separating eucommia seed oil and eucommia gum from eucommia samaras. The method comprises the following steps: processing the eucommia samaras to separate shells from kernels; performing steam explosion, enzymolysis, extracting and purifying on the shells to obtain the eucommia gum; crushing, extracting and separating the kernels to obtain the eucommia seed oil. In the method, the eucommia samaras are taken as raw materials for extracting the eucommia gum and the eucommia seed oil, and a membrane technology is introduced for implementing separation, so that the product quality and the yield can be improved, impurities can be fully removed through filtering, the needed time is short, and the extraction and separation temperature is low. The steam explosion is performed on the shells of the eucommia samaras for extracting and separating the eucommia gum, the eucommia seed oil is extracted by a supercritical CO2 technology, and residues obtained after extraction of the eucommia seed oil are used as raw materials of a bio-organic fertilizer, so that comprehensive development and utilization of the eucommia samaras are effectively realized, the cost during the development process of the eucommia gum is reduced and a high-value utilization way of the eucommia samaras is developed.

Description

Technical field: [0001] The invention belongs to the field of extraction and separation of eucommia gum, a natural product, and specifically relates to a method for extracting and separating eucommia ulmoides seed oil and eucommia gum from eucommia samara. Background technique: [0002] Eucommia ulmoides Oliv. is a rare and precious woody medicinal plant unique to my country. It is called a "living fossil plant" and is also a relict plant of the Tertiary Period that only exists in my country. , mainly located in Gansu, Shaanxi, Shanxi, Henan, Hunan, Hubei, Sichuan, Yunnan, Guizhou, Guangxi, Jiangxi, Fujian and other provinces and autonomous regions from plains to hills and mountains at an altitude of 1,690 meters. The natural center is in central China. Since the 1980s, under the impetus of increasing demand for natural rubber, the development of Eucommia gum, a substitute for natural rubber, has been taken as an important measure to adjust the rubber industry structure in va...

AI Technical Summary

Problems solved by technology

The relatively clean microbial method (Chinese patent: CN101914211A) is used to extract eucommia gum. The disadvantages are long cycle and high cost. During the long fermentation process, the structure of eucommia gum changes seriously, oxidative deterioration, molecular weight becomes smaller, and the content of impurities is large, which seriously affects its subsequent use

The above-mentioned method has the following disadvantages that are difficult to overcome: 1. directly extracting with Eucommia raw material, the consumption of organic solvent is large, and the environmental pollution is serious

②If the raw material is not sufficiently crushed, the colloid cannot be completely leached out, and the yield will be affected

③ After the eucommia material is crushed, the elasticity, toughness and tensile strength of the eucommia gum are reduced

Unable to obtain the original ecological Eucommia gum with a high degree of polymerization

④Large equipment investment and high production cost

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