阅读说明：本技术 一种从杜仲梦尼夜蛾幼虫虫粪中提取分离杜仲胶的方法 (Method for extracting and separating gutta-percha from eucommia ulmoides Mengni armyworm larva dung ) 是由 贺虹 朱铭强 邱娜 王君洁 荣雨柔 于 2020-06-17 设计创作，主要内容包括：本发明属于天然产物杜仲胶提取分离技术领域,公开了一种从杜仲梦尼夜蛾幼虫虫粪中提取分离杜仲胶的方法,以杜仲梦尼夜蛾幼虫虫粪为原料,经去杂处理后置于干燥阴凉处干燥；将干燥的杜仲梦尼夜蛾幼虫虫粪用机械粉碎,真空干燥；将处理好的原料置于搅拌器中,水浴加热；将分离后的滤渣经干燥处理后,用丙酮进行脱色,过滤后,干燥；除杂,获得生物活性成分；将干燥的滤渣与石油醚混合,回流提取,过滤除杂、析出得到杜仲精胶。本发明提取工艺步骤少,操作方便,提取分离时间短；所得的提取物纯度高,析出的杜仲胶色泽好,有效降低了杜仲胶开发过程中的成本,实现了杜仲梦尼夜蛾幼虫虫粪的高效利用,促进了杜仲产业的多元化发展。(The invention belongs to the technical field of extraction and separation of natural product gutta-percha, and discloses a method for extracting and separating gutta-percha from eucommia ulmoides dreamina armyworm larva dung, which is used as a raw material and is dried in a dry and cool place after impurity removal treatment; mechanically pulverizing dried feces of eucommia ulmoides armyworm and Trichoplusia ni, and vacuum drying; placing the processed raw materials in a stirrer, and heating in a water bath; drying the separated filter residue, decoloring with acetone, filtering, and drying; removing impurities to obtain bioactive components; mixing the dried filter residue with petroleum ether, reflux extracting, filtering to remove impurities, and separating to obtain refined gutta-percha. The invention has the advantages of few extraction process steps, convenient operation and short extraction and separation time; the obtained extract has high purity, the color of the separated gutta-percha is good, the cost in the developing process of the gutta-percha is effectively reduced, the efficient utilization of the feces of the young insects of the eucommia ulmoides Mengning moth is realized, and the diversified development of the eucommia ulmoides industry is promoted.)

1. A method for extracting and separating gutta-percha from eucommia ulmoides Mengni armyworm larva dung is characterized by comprising the following steps:

step one, pretreatment: taking eucommia ulmoides dreamina armyworm larva manure as a raw material, removing impurities, and drying in a dry and cool place; mechanically crushing the dried eucommia ulmoides armyworm larva dung to the granularity of 40-100 meshes, and placing the crushed eucommia ulmoides armyworm larva dung in a vacuum drying shade place for later use;

step two, extraction treatment: putting the raw materials processed in the step one into a stirrer, and heating in a water bath for 1-2 h;

step three, decoloring: drying the filter residue separated in the step two, decoloring the filter residue by using acetone, and drying the filter residue in a ventilation drying oven after hot filtration; filtering and removing impurities from the filtrate separated in the step two to obtain a bioactive component;

step four, purification and separation: mixing the residue with petroleum ether, extracting under reflux, filtering, refrigerating the filtrate, recovering petroleum ether, and drying at low temperature to obtain refined gutta Percha.

2. The method for extracting and separating gutta-percha from the feces of the young insects of eucommia ulmoides Meng Ni-Shi moth as claimed in claim 1, wherein the second step of extracting with a stirrer comprises: adding distilled water into the raw materials obtained in the step one according to the ratio of the raw materials to the liquid to the raw materials of 1: 10-1: 15, heating in a water bath for 1-2 hours at the rotating speed of 200-300 r/min and the temperature of 50-60 ℃, and naturally precipitating and separating to obtain filtrate and filter residues.

3. The method for extracting and separating gutta-percha from the feces of the young insects of eucommia ulmoides Meng Ni-Shi moth as claimed in claim 1, wherein the drying manner in the third step is vacuum freeze drying;

the vacuum freeze-drying conditions adopted include: cooling the filter residue to-40-50 ℃, keeping the vacuum of a drying chamber at 0.08-1 Mpa, keeping the material thickness at 10-20 mm, keeping the temperature of a heating plate at 20-35 ℃, and keeping the temperature of a cold trap at-30-40 ℃.

4. The method for extracting and separating gutta-percha from the feces of the young insects of eucommia ulmoides Meng Ni-Shi moth as claimed in claim 1, wherein said step three comprises: and D, mixing the filter residue subjected to drying treatment in the step II according to a material-liquid ratio of 1: 10-1: 20, condensing, refluxing and extracting for 2-4 hours at 70-80 ℃, thermally filtering to remove filtrate, and drying filter residues in a ventilation drying oven.

5. The method for extracting and separating gutta-percha from the feces of the armyworm of eucommia ulmoides Meniere armyworm and the larva as claimed in claim 1, wherein the three bioactive components of the step (III) comprise chlorogenic acid not less than 0.037mg/ml and geniposide acid not less than 0.021mg/ml, and can be used as a raw material of feed additives.

6. The method for extracting and separating gutta-percha from the feces of the young insects of eucommia ulmoides Meng Ni-Shi moth as claimed in claim 1, wherein the step (4) comprises: mixing the filter residue dried in the third step with petroleum ether according to the material-liquid ratio of 1: 5-1: 20, condensing and refluxing at 80-85 ℃ for 2-4h, carrying out hot filtration to remove impurities, refrigerating the liquid at-4-20 ℃ for 2-4h, recovering the petroleum ether after gutta-percha is separated out, and carrying out vacuum drying to obtain the gutta-percha.

7. A novel material for shape memory, low temperature plasticity, corrosion resistance, wear resistance, sound insulation and shock absorption prepared by the gutta percha separated by the method of claims 1 to 6.

Technical Field

The invention belongs to the technical field of extraction and separation of natural product gutta-percha, and particularly relates to a method for extracting and separating gutta-percha from eucommia ulmoides Mengni moth larva dung.

Background

Currently, Eucommia ulmoides (eucommiaulmoides oliver) is a plant of genus eucommea (Eucommiaceae) genus, eucommiae family, which is a single family deciduous tree. Eucommia bark is a unique rare medicinal plant which contains abundant secondary metabolites such as flavonoids, phenylpropanoids, lignans, iridoids and the like and has the functions of resisting oxidation, reducing blood pressure and blood sugar and enhancing immunity. The eucommia ulmoides can be used for medicines, and can also be used for extracting natural high molecular compound eucommia ulmoides gum, and the eucommia ulmoides gum has the excellent characteristics of shape memory, low-temperature plasticity, corrosion resistance, wear resistance, sound insulation, shock absorption and the like, and becomes a novel material to be developed. In recent years, with the large-area planting of eucommia ulmoides, the harm of the leaf eating pest eucommia ulmoides Meniere Zhang (orthopaedingiChenet Zhang) is becoming serious, and the pest becomes a potential threat of the large-scale cultivation of eucommia ulmoides.

Eucommia ulmoides Meng Ni Ye is belonging to Lepidoptera (Lepidopter) Noctuidae (Noctuidae) and is the most major monophagic leaf-eating pest damaging eucommia ulmoides at present. In recent years, the eucommia ulmoides Mengni noctuid is serious in the main producing area, and the insect area reaches 2000hm only in the largest eucommia ulmoides orchard cultivation base of a certain province²The pest rate is more than 80%, and even the phenomenon that some leaves in forest stands are completely eaten by light is caused, so that the normal growth and resource utilization of eucommia ulmoides are seriously influenced. If a large amount of eucommia ulmoides Menispermae larva dung is used for extracting the eucommia ulmoides gum, the cost in the development process of the eucommia ulmoides can be reduced, and the diversified development of the eucommia ulmoides industry can be promoted.

At present, in the aspect of extraction and separation research of gutta-percha, most of research focuses on the aspects of organic solvent types for extracting the gutta-percha, additives and the like, the development of single gutta-percha is high in cost and difficulty, and the low-cost utilization condition of the gutta-percha is still not optimistic. At present, the extraction method of gutta-percha is disclosed in the solvent method (Chinese patent: CN 92114760.0). The rolling method is adopted to grind the non-gel part on the surface of the eucommia leaves, so as to expose the gel-containing tissue in the leaves, and then the gutta-percha is obtained by leaching with organic solvent such as petroleum ether. The method has the advantages of high cost, low gutta-percha yield, more organic solvent consumption and serious environmental pollution. The enzymolysis method (Chinese patent: CN201210307947.8) discloses that composite enzyme of cellulase, pectinase and protease is used for degrading cellulose of cell walls, so that gutta-percha is easy to separate out, and the disadvantages are long fermentation period and high cost, and the structural change of the gutta-percha is serious in a long fermentation process, the content of impurities is more, and the subsequent utilization of the gutta-percha is seriously influenced.

Through the above analysis, the problems and defects of the prior art are as follows: (1) the raw materials such as the eucommia leaves and the like are mechanically crushed and extracted by an organic solvent, the consumption of the organic solvent is large, the environmental pollution is serious, and the output rate of the eucommia ulmoides gum is low. (2) The eucommia ulmoides raw material is treated by enzyme to degrade the cell wall of the eucommia ulmoides raw material, the output rate of the eucommia ulmoides gum can be improved, but the eucommia ulmoides gum has long consumption period and high cost, the structure of the eucommia ulmoides gum is easy to change, and the content of impurities is high. In view of the defects of the existing eucommia ulmoides extraction and separation method, the method for extracting and separating the gutta-percha from the eucommia ulmoides Mengni armyworm larva dung is created, and the gutta-percha extracted and separated by the method effectively reduces the extraction cost of the gutta-percha and has higher practicability.

The difficulty in solving the above problems and defects is: difficulty in

The significance of solving the problems and the defects is as follows: (1) the method has the advantages of improving the output rate of the gutta-percha, reducing the cost, reducing the pollution to the environment, filling the gap of the existing natural rubber in China, and developing wider research and application fields of the gutta-percha. (2) Provides a theoretical basis for extracting and separating the gutta-percha from the transformed eucommia leaves by feeding insects, and also provides a new idea for promoting the diversified development of the eucommia industry.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a method for extracting and separating gutta-percha from eucommia ulmoides Meng ni armyworm larvae dung. The product quality and yield are improved, the process steps are less, the time is short, and the cost is low.

The invention is realized in this way, a method for extracting and separating gutta-percha from eucommia ulmoides Meng ni armyworm larva manure, which is characterized in that eucommia ulmoides Meng ni armyworm larva manure is subjected to pretreatment, an extraction step, a decoloration step and a purification and separation step to prepare gutta-percha;

the method specifically comprises the following steps:

(1) pretreatment: taking eucommia ulmoides dreamina armyworm larva manure as a raw material, removing impurities, and drying in a dry and cool place; mechanically crushing the dried eucommia ulmoides armyworm larva dung to the granularity of 40-100 meshes, and placing the crushed eucommia ulmoides armyworm larva dung in a vacuum drying shade place for later use;

(2) extraction treatment: putting the raw materials processed in the step (1) into a stirrer, and heating in a water bath for 1-2 h;

(3) and (3) decoloring: drying the filter residue separated in the step (2), decoloring with acetone, and drying the filter residue in a ventilation drying oven after hot filtration; filtering the filtrate separated in the step (2) to remove impurities to obtain bioactive components;

(4) and (3) purification and separation: mixing the filter residue dried in the step (3) with petroleum ether, condensing, refluxing and extracting, performing heat filtration to remove impurities, refrigerating the filtrate, recovering the petroleum ether after the gutta-percha is separated out, and drying at low temperature to obtain the gutta-percha.

Further, in the step (2), the extraction treatment by using a stirrer specifically comprises: adding distilled water into the raw materials obtained in the step (1) according to the ratio of the raw materials to the liquid to the raw materials of 1: 10-1: 15, heating in a water bath for 1-2 hours at the rotation speed of 200-300 r/min and the temperature of 50-60 ℃, and naturally precipitating and separating to obtain filtrate and filter residues.

The drying mode in the step (3) is vacuum freeze drying.

The vacuum freeze drying condition is that the temperature of the filter residue is reduced to-40 to-50 ℃, the vacuum of a drying chamber is 0.08 to 1Mpa, the thickness of the material is 10mm to 20mm, the temperature of a heating plate is 20 to 35 ℃, and the temperature of a cold trap is-30 to-40 ℃.

Further, the step (3) is specifically: and (3) mixing the filter residue subjected to drying treatment in the step (2) according to a material-liquid ratio of 1: 10-1: 20, condensing, refluxing and extracting for 2-4 hours at 70-80 ℃, thermally filtering to remove filtrate, and drying filter residues in a ventilation drying oven.

Furthermore, the bioactive components mainly comprise chlorogenic acid more than or equal to 0.037mg/ml and geniposide acid more than or equal to 0.021mg/ml, and can be used as a raw material of a feed additive.

Further, the step (4) is specifically as follows: mixing the filter residue dried in the step (3) with petroleum ether (boiling range: 60-90 ℃) according to the material-liquid ratio of 1: 5-1: 20, condensing, refluxing and extracting for 2-4h at 80-85 ℃, carrying out hot filtration to remove impurities, refrigerating the liquid for 2-4h at-4-20 ℃, recovering the petroleum ether after gutta-percha is separated out, and carrying out vacuum drying to obtain the gutta-percha essence.

The invention also aims to provide a novel material which is prepared from the eucommia ulmoides gum separated by the method and is used for shape memory, low-temperature plasticity, corrosion resistance, wear resistance, sound insulation and shock absorption.

By combining all the technical schemes, the invention has the advantages and positive effects that:

the invention utilizes the larva worm feces of the eucommia ulmoides Mengni armyworm as the raw material to extract the eucommia ulmoides gum, effectively realizes the purpose that the eucommia ulmoides Mengni armyworm becomes harmful to benefit, reduces the cost in the development process of the eucommia ulmoides, expands the way of high-quality utilization of the eucommia ulmoides and promotes the diversified development of the eucommia ulmoides industry.

According to the method, the characteristic that cellulose can be enzymolyzed by intestinal microorganisms of the larvae of the eucommia ulmoides Meniere armyworm is utilized, and the excrement of the larvae of the eucommia ulmoides Meniere armyworm is utilized to extract the gutta-percha, so that the extraction cost of the gutta-percha is reduced, and the industrial production of the gutta-percha is facilitated.

Technical effect or experimental effect of comparison.

Method of producing a composite material	The invention	Ultrasonic wave assisting method	Alkaline leaching process	Composite enzymolysis method
					Output rate of gutta-percha	10.25％	6.68	2.68％	15％

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

FIG. 1 is a flow chart of a method for extracting and separating gutta-percha from feces of larvae of eucommia ulmoides Mengnidopsis provided by the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Aiming at the problems in the prior art, the invention provides a method for extracting and separating gutta-percha from eucommia ulmoides Mengni moth larva dung, and the invention is described in detail with reference to the attached drawings.

As shown in figure 1, the invention provides a method for extracting and separating gutta-percha from feces of larvae of eucommia ulmoides Meng armyworm, which is characterized in that the feces of the larvae of eucommia ulmoides Meng armyworm are subjected to pretreatment, an extraction step, a decoloration step and a purification and separation step to prepare the gutta-percha.

The method specifically comprises the following steps:

s101, pretreatment: taking eucommia ulmoides dreamina armyworm larva manure as a raw material, removing impurities, and drying in a dry and cool place; mechanically pulverizing the dried eucommia ulmoides armyworm larva feces to 40-100 meshes, and placing the crushed eucommia ulmoides armyworm larva feces in a vacuum drying shade for later use.

S102, extraction processing: and (4) placing the raw materials processed in the step (S101) into a stirrer, and heating in a water bath for 1-2 hours.

S103, decoloring: drying the filter residue separated in the step S102, decoloring the filter residue by using acetone, and drying the filter residue in a ventilation drying oven after hot filtration; and (4) filtering and removing impurities from the filtrate separated in the step (S102) to obtain the bioactive components.

S104, purification and separation: mixing the filter residue dried in the step S103 with petroleum ether, condensing, refluxing, extracting, performing heat filtration to remove impurities, refrigerating the filtrate, recovering the petroleum ether after the gutta-percha is separated out, and drying at low temperature to obtain the gutta-percha.

The invention is further described with reference to specific examples.