Method for extracting and separating gutta-percha from feces of larvae of Orthosia songi Chen et Zhang

Abstract

The invention belongs to the technical field of extraction and separation of a natural product, namely gutta-percha, and discloses a method for extracting and separating gutta-percha from feces of larvae of Orthosia songi Chen et Zhang. The method comprises the following steps of: with the feces of larvae of Orthosia songi Chen et Zhang as a raw material, removing impurities from the feces and drying the feces in a dry and cool place; crushing the dried feces of larvae of Orthosia songi Chen et Zhang by using a machine, and carrying out vacuum drying; putting treated raw materials into a stirrer, and carrying out heating in a water bath; drying separated filter residues, decolorizing the filter residue with acetone, carrying out filtering, and then performing drying; removing impurities toobtain bioactive components; and mixing the dried filter residues with petroleum ether, carrying out reflux extraction, performing filtering to remove impurities, and conducting precipitating to obtain refined gutta-percha. According to the invention, extraction process is few in steps, convenient to operate and short in extraction and separation time; the obtained extract is high in purity; theprecipitated gutta-percha is good in color, cost in the development process of gutta-percha is effectively reduced, efficient utilization of the feces of larvae of Orthosia songi Chen et Zhang larva fecula is achieved, and diversified development of an eucommia ulmoides industry is promoted.

Description

technical field [0001] The invention belongs to the technical field of extraction and separation of eucommia gum, a natural product, and in particular relates to a method for extracting and separating eucommia gum from excrement of eucommia ulmoides larvae. Background technique [0002] At present, Eucommia ulmoides Oliver is a plant of Eucommia genus Eucommia (Eucommiaceae) and is a deciduous tree of a single family. Eucommia ulmoides is rich in flavonoids, phenylpropanoids, lignans, iridoids and other secondary metabolites that have the functions of anti-oxidation, lowering blood pressure, lowering blood sugar, and enhancing immunity. It is a unique and precious medicinal plant . In addition to being used for medicine, Eucommia ulmoides can also be extracted from Eucommia ulmoides, a natural polymer compound. Eucommia ulmoides gum has excellent properties such as shape memory, low-temperature plasticity, corrosion resistance, wear resistance, sound insulation, and shock a...

AI Technical Summary

Problems solved by technology

The cost of this method is high, the output rate of Eucommia gum is low, the consumption of organic solvent is large, and the environmental pollution is serious.

And the enzymatic hydrolysis method (Chinese patent: CN201210307947.8) discloses, utilizes the compound enzyme of cellulase, pectinase and protease to degrade the cellulose of cell wall, thereby makes Eucommia gum easy to separate out, and shortcoming is that fermentation cycle is long, and cost is high, During the long fermentation process, the structure of Eucommia gum changes seriously, and the content of impurities is high, which seriously affects its subsequent utilization.

[0005] Through the above analysis, the problems and defects in the prior art are: (1) raw materials such as mechanically pulverized eucommia leaves are leached with organic solvents, the consumption of organic solvents is large, serious environmental pollution, and the output rate of eucommia gums is low

(2) Treating Eucommia ulmoides raw materials with enzymes to degrade the cell wall, although it can increase the output rate of eucommia gum, but it takes a long time, high cost, easy to change the structure of eucommia gum, and contains more impurities

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