KR100946355B1 - A method for extracting and refining vegetable wax - Google Patents

Abstract

The present invention relates to a method for extracting and purifying vegetable waxes, which is dried and pulverized with vegetable raw materials to obtain an extract mixture containing wax through supercritical extraction, and then matured thereafter, followed by filtration and purification of the lower wax layer. There is an excellent effect that can provide a method for purifying wax.

Wax, vegetable wax, supercritical, sesame

Description

A method for extracting and refining vegetable wax}

1 is a schematic diagram illustrating a process of extracting and purifying wax from a plant.

2 is a schematic diagram schematically showing an apparatus for extracting an extract containing a high content of a fat-soluble compound in a plant raw material using supercritical carbon dioxide.

<Description of the symbols for the main parts of the drawings>

1: extractor 2: heat exchanger

3, 4: pump 5: co-solvent storage tank

6: carbon dioxide storage tank 7: separator

8: pressure reducer 9: pressure reducing valve

10, 11 discharge valve 12, 13 supply valve

The present invention relates to a method for extracting and purifying vegetable wax, and more particularly, a method for purifying vegetable wax with high efficiency by extracting and extracting an extract including wax through supercritical extraction, filtering the lower wax layer, and then purifying the lower wax layer. It is about.

Wax generically refers to fatty acid esters of monohydric alcohol (or dihydric alcohol). Also known as lead. However, some names do not habitually follow this chemical distinction. For example, sperm whale oil is liquid wax, not fat, and wax is fat, not wax. Waxes are classified as liquid waxes, animal solid waxes, and vegetable solid waxes.

The number of liquid waxes is small, and anti-whale oil and veradius whale oil are among them. Sperm whale oil is a liquid wax obtained by extracting the solid which precipitates by cooling the fat-like substance in the head of this whale. Fatty acid esters of cetyl alcohol and oleyl alcohol are the main components. It is used as a lubricant for precision machinery because it does not become rancid and changes in viscosity due to temperature change is small. In addition, higher alcohols obtained by saponification are used as raw materials for synthetic detergents. The nature and use of Veradius whale oil is similar to sperm whale oil. However, since the content of oleyl alcohol is large, it is 70% or more.

Animal solid waxes include spermatozoa, beeswax, pewter, and wool. The sperm is a solid wax obtained by separating the precipitate obtained by cooling the sperm whale oil and the vera oil of the veradius whale oil. Beeswax is a dark red or dark brown solid that is obtained by heating, pressing or solvent extraction of the residue from the honey bee house. Pewter is a yellowish-white solid substance secreted by the parasite of the pellets. Its melting point is 80 ~ 83 ℃, its main component is ceryl serrate and it is used as a glossing material. Wool is an adhesive substance obtained by adding an inorganic acid to the refined liquid of raw wool. The purified is called lanolin.

Vegetable solid waxes are widely distributed on the surface of stems, leaves, and skins of plants, but their amount is small. Carnauba wax and montan wax. Carnauba wax is a yellowish green wax that precipitates from the leaves of the carnauba tree produced in Brazil. It is known as the hardening wax. Non-saponifier is about 55%. The main component is a wax ester consisting of an alcohol having 26 to 34 carbon atoms and a fatty acid. It is used for gloss materials and lacquer using its hardness. Montan wax is a black wax obtained from lignite and used as a gloss material.

Sesame is a yearly vegetation ( Sesamun ) belonging to Sesamum in Pedaliaceae. indicum) and seeds are used as food. Sesame seeds have been recognized as a valuable flow food (유량 食品), especially among the flow plant (品 食品), which is not known for some time, but is known as a healthy food with a variety of medicinal effects. In the 3rd century BC, China's intentional book, "Nongxon Chachoeng," sesame seeds are a food that restores the function of the kidneys to revitalize the body, strengthens the function of the five intestines, energizes, strengthens the body, promotes growth, It is written to make good.

Very few vegetable waxes are present on the skin of seed plants, including sesame seeds, and on the stems and leaves of natural plants, but the amount is so small that extraction and purification are very important.

Thus, the present inventors have completed the present invention by obtaining a vegetable wax with high efficiency by obtaining an extract including a wax through supercritical extraction in view of the above point, aging it, and filtering and purifying the lower wax layer.

Accordingly, it is an object of the present invention to provide a method for producing a vegetable wax with high efficiency by obtaining an extract comprising a wax through supercritical extraction and aging it to filter and purify the lower wax layer.

In order to achieve the above object, the present invention was achieved by obtaining an extract including a wax through supercritical extraction, aging it, preparing a vegetable wax by filtration and purifying the lower wax layer, and measuring the yield of the wax produced.

Hereinafter, the configuration of the present invention.

The present invention comprises the steps of preparing a vegetable wax by obtaining an extract comprising a wax through supercritical extraction, aging it, and filtering and purifying the lower wax layer; And investigating the yield of the wax produced in the above step.

The raw material used to extract the wax in the present invention can be any plant known to contain wax as an active ingredient. Specific examples of raw materials include sesame seeds, perilla, beans, corn, rapeseed, rice, safflower, sunflower seeds, cotton seeds, peanuts, olives, palms, and pepper seeds.

Extraction and purification method of the vegetable wax of the present invention comprises the steps of drying or roasting the raw material; Grinding the raw material dried or roasted in the step; Filling the powder obtained in the step into a supercritical extractor to extract a mixture containing wax using supercritical carbon dioxide; Aging the mixture obtained in the step to separate into the upper and lower layers; Separating only the lower layer of the upper and lower layers obtained in the above step and filtering using a filter press to obtain a solid comprising wax; And preparing a wax by refining the solid content obtained in the above step.

In this case, in order to improve the extraction efficiency of the edible oil and fat, the particle size of the raw material is preferably included in the pretreatment step of crushing into fine particles having a particle diameter of 1.25mm or less for the maintenance and extraction efficiency of bioactive substances. Extraction efficiency is low in the form of particles larger than 1.25mm, and the extraction efficiency is rapidly increased in the fine particles smaller than 1.25mm.

In the present invention, the drying temperature of the raw material is preferably 1% or less of moisture at 110 ° C., and the roasting of the raw material is preferably performed at 200 ° C. or more for 10 minutes or more, and more preferably 5 to 50 minutes at 100 to 250 ° C. It is better to perform, more preferably 15 to 40 minutes at 180 ~ 220 ℃, most preferably 15 minutes at 220 ℃.

When grinding the raw materials it is preferable to grind into fine particles. The fine powdering step of the raw material is not only to increase the contact area with the supercritical carbon dioxide, but also to grind the raw material into fine particles in order to facilitate elution by desorption, the smaller the finer the finer but generally larger particle size 1.25mm The following is preferable.

When the raw material powder is extracted using supercritical carbon dioxide, the temperature is preferably 35 to 80 ° C. and the pressure is 350 to 500 bar at a flow rate of 0.0085 to 1 m / sec, most preferably at a temperature of 60 ° C. and a pressure of 500 bar. Extracting at a flow rate of 0.0085 m / sec is recommended.

In addition, in the step of adding the supercritical carbon dioxide, the co-solvent may be further added to further increase the extraction efficiency. At this time, the concentration of the co-solvent is characterized in that 1 to 50%, more preferably 1 to 10%.

In the present invention, the cosolvent may be used alone or in mixture of two or more selected from the group consisting of alcohols such as ethanol, iso-propanol and methanol, normal hexane, acetone and water.

The most preferred cosolvent is water up to 1.0%.

Before describing a wax extraction method using a supercritical fluid according to the present invention, the supercritical fluid extraction is described. The supercritical fluid extraction is a technique using various advantages of the supercritical fluid. The principle of distillation and extraction has a number of unique advantages because of the nature of the complex technology applied together. Supercritical fluids can be set to any condition from high density to low density by manipulating the pressure temperature, so the product has excellent selectivity such as fractionation and separation, so that high purity products can be obtained and the extraction solvent can be recovered almost completely without loss. And a purified product with no residual solvent can be obtained. In addition, the viscosity of the supercritical fluid is small, so it penetrates into the sample, and the extraction efficiency is high. Also, the diffusion coefficient is large, so the extraction speed is fast, and the extraction at a relatively low temperature can avoid the damage of nutrients by heat. And the density difference between the supercritical fluid and the low viscosity of the supercritical fluid have many advantages such as the separation of the extraction residue and the solvent. However, since a high pressure device must be used, there is a disadvantage in that facility cost and maintenance cost are high.

Carbon dioxide is most commonly used as a supercritical fluid, and carbon dioxide is the most preferred because its critical pressure is 7.4 MPa and its critical temperature is 31 ° C., which is generally easy to create supercritical conditions, and carbon dioxide itself is non-toxic and inexpensive. It is becoming. Supercritical carbon dioxide is used as a nonpolar solvent in various extraction of low polar substances such as fats and oils. In addition, by adding a substance having a polarity, such as alcohol, it is easy to induce a change in the polarity of the supercritical fluid, that is, it can significantly change the dissolving power, there is an advantage that can be utilized in the extraction of oil and fat components other than triglycerides.

The present invention is an extractor for extracting an extract containing a high content of fat-soluble compounds in the raw material by contacting the supercritical fluid with a vegetable raw material, and a vacuum separator having a function of separating the extract including wax in the supercritical fluid after extraction It is characterized by. The decompressor is composed of a circulator for decompressing the supercritical fluid from the extractor to obtain a high purity extraction mixture, and recovering the supercritical fluid solvent separated from the depressurizer and supplying it to the extractor for reuse.

2 is a schematic diagram schematically showing an apparatus for extracting an extract containing a high content of a fat-soluble compound in a raw material using supercritical carbon dioxide.

Looking at the wax extraction apparatus according to the present invention in more detail, as shown in Figure 1, two or more extractors (1) is filled with sesame raw material, the supercritical carbon dioxide through the heat exchanger (2) extractor (1) Supply at the bottom of the At this time, the supply valve 12, 13 controls the supply of supercritical carbon dioxide supplied to each extractor (1).

The supercritical carbon dioxide supplied in this way is contacted with the packed raw material to extract the wax extract, then rises and is released out of the extractor. At this time, the discharged mixture of carbon dioxide and wax is controlled by the discharge valves 10 and 11, The extracted supercritical carbon dioxide and wax mixture is transferred to the decompressor 8 under reduced pressure via the decompression valve 9.

In the pressure reducer 8, the extracted wax mixture and carbon dioxide are separated, and the separated carbon dioxide is circulated to the storage tank 6 and reused. The wax mixture separated in the pressure reducer 8 passes through the co-solvent separator 7. Is collected as a final product.

The carbon dioxide storage tank 6 may be supplemented with carbon dioxide from the outside so as to compensate for some losses occurring in the entire process in addition to the carbon dioxide supplied through the circulation.

The carbon dioxide stored in the reservoir 6 is pressurized through the pump 3 and supplied to the extractor through the heat exchanger 2 in a supercritical state.

This process continues continuously until the target extraction yield is reached from the raw material. In addition, for continuous operation, the extractor (1) is installed two or more to control a plurality of supply valves (12), (13) and a plurality of discharge valves (10), 11 are used alternately, do not use The extractor removes the finished raw materials and adds new raw materials to prepare for the next extraction.

In this regard, a wax mixture extraction method using the supercritical fluid according to the present invention will be described.

The method for extracting a high content fat-soluble compound high content wax using a supercritical fluid according to the present invention basically fills a raw material with an extractor, and inputs a supercritical fluid into an extractor filled with a raw material to extract a wax mixture, and the extracted super The critical fluid and the wax mixture are separated under reduced pressure, and the separated fluid is pressurized by a pump to recirculate.

On the other hand, preferably the step of aging the wax mixture to be separated into the upper and lower layers, characterized in that the sesame oil is left for 7 to 30 days at a temperature of -5 ~ 40 ℃ in the storage tank, more preferably 32 ~ 38 It is good to leave it for 7 to 30 days at the temperature of ° C, and most preferably it is left to stand at the temperature of 35 ° C for 15 days.

The wax purification method may be any method as long as it is generally used in the art.

In the present invention, as the method for purifying wax, oxidizing agents are used. These are generally strong oxidizing agents and have a high decolorizing effect. For example, ozone or chlorine dioxide (ClO ₂ ) may be used. Specific purification method is first hydrogenated by stirring the wax for 4 hours using nickel pellets (Ni-pellet) or nickel carbonate-copper carbonate (NiCO ₃ -CuCO ₃ ) as a reaction catalyst at 7-10 atm at 150-230 ℃ After the reaction, the reaction is completed and cooled to obtain a hydrogenated wax, and the hydrogenated wax thus obtained is subjected to oxidation using a solvent. At this time, solvents that may be used include acetone, carbon tetrachloride, dimethyl chloride, dimethylformamide, cyclohexane, ligroin, methyl ethyl ketone, methyl isobutyl ketone, dioxane, methanol, ethanol, propanol, isopropanol, tetrahydrofuran, toluene , Benzene, dimethyl sulfoxide, acetic acid, alkanes and the like may be used, but methyl ethyl ketone is most preferred in consideration of solubility of wax and removal of solvent after treatment.

In the present invention, in the oxidation process, a predetermined amount of hydrogenated wax is added to a reaction vessel and a solvent is added thereto. The temperature is maintained at 60-80 ° C. to completely dissolve the wax. 1 to 100 parts by weight of chlorine dioxide is added in 3-4 equal parts to 100 parts by weight of wax, and reacted for 24 hours from the time of the first addition. After the reaction was stopped, the stirring was stopped, and about 10 parts by weight of the activated soil was added to 100 parts by weight of the wax used in the reaction solution. After completion of the reaction, the solution is filtered under pressure. In the case of filtration, it is heated to 65-70 ° C. to prevent the precipitation of wax. The filtered solution is cooled to 0 ° C. and filtered under reduced pressure to obtain purified wax.

Hereinafter, a specific method of the present invention will be described in detail with reference to Examples, and the scope of the present invention is not limited only to these Examples.

Example  1: from sesame seeds Supercritical  Preparation of Wax Using Extraction Method

After roasting sesame seeds at 200 ° C. for 30 minutes, the roasted sesame seeds were ground to fine particles of 1.25 mm or less. The sesame raw material powder was added to a supercritical extractor, and a mixture of wax and sesame oil was extracted by adding 99.0% of supercritical carbon dioxide and 1.0% of water having a temperature of 60 ° C. and a pressure of 500 bar under a flow rate of 0.0085 m / sec or less.

The mixture of wax and sesame oil obtained above was aged for 15 days at 35 ° C., and then the lower wax layer was separated and filtered through a filter press to separate the wax. The separated wax was hydrogenated under stirring at 8 ° C. at 200 ° C. for 4 hours using nickel pellets (Ni-pellet), and then cooled after cooling to obtain a hydrogenated wax.

100 g of the hydrogenated wax prepared as described above was placed in a reaction vessel, and 500 mL of methyl ethyl ketone was added as a solvent, and then maintained at 70 ° C. to completely dissolve the wax. 100 mL of chlorine dioxide was added in 4 portions and added at 1 hour intervals for 24 hours from the time of the first addition. After completion of the reaction, the stirring was stopped and the reaction solution was stirred for 10 hours while stirring under reflux. After the reaction, the solution was filtered under pressure while maintaining the solution at 70 ° C. The filtered solution was cooled to 0 ° C. and filtered under reduced pressure to obtain purified wax.

Example  2: from olive Supercritical  Preparation of Wax Using Extraction Method

The olives were dried at 110 ° C. to 1% or less of moisture, and the dried olives were ground to fine particles of 1.25 mm or less. The olive raw material powder was added to a supercritical extractor, and a mixture of wax and olive oil was extracted by adding 99.0% of supercritical carbon dioxide and 1.0% of water having a temperature of 60 ° C. and a pressure of 500 bar at a flow rate of 0.0085 m / sec or less.

The mixture of the wax and olive oil obtained above was aged for 15 days at 35 ° C., and then the lower wax layer was separated and filtered through a filter press to separate the wax. The separated wax was hydrogenated under stirring at 8 ° C. at 200 ° C. for 4 hours using nickel pellets (Ni-pellet), and then cooled after cooling to obtain a hydrogenated wax.

100 g of the hydrogenated wax prepared as described above was placed in a reaction vessel, and 500 mL of methyl ethyl ketone was added as a solvent, and then maintained at 70 ° C. to completely dissolve the wax. 100 mL of chlorine dioxide was added in 4 portions and added at 1 hour intervals for 24 hours from the time of the first addition. After completion of the reaction, the stirring was stopped and the reaction solution was stirred for 10 hours while stirring under reflux. After the reaction, the solution was filtered under pressure while maintaining the solution at 70 ° C. The filtered solution was cooled to 0 ° C. and filtered under reduced pressure to obtain purified wax.

Experimental Example  1: Extraction Efficiency of Wax by Pretreatment

1. Property of raw material

The extraction efficiency of the wax extracted with the extract was measured while changing the properties of the raw materials. Sesame and olive were used as raw materials, respectively. The sesame seeds were roasted at 200 ° C. for 30 minutes, and then the roasted sesame seeds, flakes, and crushed fine particles were extracted with supercritical carbon dioxide at 60 ° C. and 500 bar for 1 hour. After preparing the aging, filtration and purification as in Example 1 to prepare a wax. The olives are dried at 110 ° C. or less with 1% or less of moisture, and then dried dried ribs in the form of seeds, flakes, and crushed fine particles are extracted with supercritical carbon dioxide at 60 ° C. and 500 bar for 1 hour. After preparing a mixture of olive oil was aged, filtered and purified as in Example 1 to prepare a wax.

The extraction efficiency of the wax according to each raw material property was measured. The extraction efficiency of the wax was compared in terms of yield by measuring the amount of wax contained in the extracted sesame oil or olive oil. The efficiency was calculated as 100% of the total amount of wax contained in sesame or olive and the weight of the extracted wax in percentage. The results are shown in Table 1 below.

Extraction efficiency of wax according to the properties of raw materials (%) Raw material form Sesame olive Seed form 1.7 0.04 Flake 13.4 5.7 Particle type (diameter 1.25mm or more) 85.1 71.6 Fine particle form (diameter 1.25mm or less) 97.8 95.7

As shown in Table 1, the efficiency of wax extraction is greatly affected by the shape of the raw material. In particular, the smaller the particle size, the better the efficiency, which is believed to increase the extraction efficiency due to the increased contact area between the raw material and the supercritical fluid.

2. Distribution temperature and time

Table 2 shows the extraction efficiency of the wax according to the roasting temperature, it can be seen that the wax extraction efficiency is rapidly increased when the roasting temperature is 200 ℃ or more when roasted for 30 minutes. In addition, Table 3 shows the effect of the roasting time, it is measured the extraction efficiency of the wax when the roasting time is increased at 200 ℃. The longer the roasting time, the higher the extraction efficiency of the wax. The extraction efficiency of the wax was compared in terms of yield by measuring the amount of wax contained in the extracted sesame oil. The efficiency was calculated as 100% of the total amount of wax contained in sesame seeds and the weight of the extracted wax in percentage.

Extraction efficiency of wax according to distribution temperature (distribution time: 30 minutes) Distribution temperature (℃) 100 150 170 180 190 200 210 220 250 Wax extraction efficiency (%) 35.6 52.7 59.3 66.3 80.3 97.8 98.2 98.3 98.3

Extraction efficiency of wax according to roasting time (distribution temperature 200 ℃) Power distribution time (minutes) 5 10 15 20 30 40 50 Wax extraction efficiency (%) 32.6 51.7 69.1 91.9 97.8 93.2 98.3

3. Drying temperature and moisture content

Table 4 shows the extraction efficiency change of the wax according to the drying temperature when the drying time is 30 minutes, the extraction efficiency of the wax is drastically decreased when the drying temperature is less than 100 ℃ and extraction efficiency was good at 100 ~ 120 ℃ At temperatures higher than 120 ° C., raw materials burned out, resulting in a decrease in flavor. In addition, Table 5 shows the effect of the moisture content, it can be seen that the extraction efficiency of the wax is significantly reduced when the moisture content is greater than 1%. The extraction efficiency of the wax was compared in terms of yield by measuring the amount of the wax contained in the extracted and separated olive oil. The efficiency was calculated as 100% of the total amount of wax contained in the olive and the weight of the extracted wax in percentage.

Extraction efficiency of wax according to drying temperature (drying time: 30 minutes) Drying temperature (℃) 90 100 110 120 130 Wax extraction efficiency (%) 41.5 89.4 97.9 97.9 - Note: At 130 ℃ or higher, olives are burned and wax is not purified.

Extraction efficiency of wax according to moisture content (drying temperature 110 ℃) Moisture content (%) 0.5 One 2 5 Wax extraction efficiency (%) 97.6 90.4 75.2 38.5

Experimental Example  2 : Supercritical  Extraction Efficiency of Wax by Different Extraction Methods

The extraction efficiency of the wax prepared using the supercritical extraction method of the present invention and the wax separated from sesame oil or olive oil prepared according to the conventional method were compared.

First, sesame oil and olive oil were prepared according to a conventional method as a control, and the wax was separated and purified. Specifically, after roasting sesame seeds at 200 ° C. for 30 minutes, the roasted sesame seeds were ground into fine particles of 1.25 mm or less. The sesame raw material powder was introduced into a conventional compression extractor, and a pressure of 500 bar was applied to extract a mixture of wax and sesame oil. The wax and sesame oil mixture obtained above were aged, filtered and purified in the same manner as in Example 1 to obtain a wax. The olives were dried at 110 ° C. to 1% or less of water, and then the dried olives were ground into fine particles of 1.25 mm or less. The olive powder was milked according to a conventional method to extract a mixture of wax and olive oil. The wax and olive oil mixture obtained above were aged, filtered and purified in the same manner as in Example 2 to obtain a wax.

The extraction efficiency of the sesame-derived wax prepared in Example 1 and the sesame-derived wax prepared according to the conventional method was compared, and the extraction efficiency of the olive-derived wax prepared in Example 2 was also compared with the conventional method. The extraction efficiency of the wax was compared in terms of yield by measuring the amount of wax contained in the extracted sesame oil or olive oil. The efficiency was calculated as 100% of the total amount of wax contained in sesame or olive and the weight of the extracted wax in percentage. As a result, the extraction efficiency of the sesame-derived wax prepared in Example 1 was 98.3%, the extraction efficiency of the sesame-derived wax prepared according to the conventional method was 12.9%, and the extraction efficiency of the olive-derived wax prepared in Example 2 was 95.7%. The extraction efficiency of the olive-derived wax prepared according to the conventional method was 15.4%. It was confirmed that the extraction efficiency of the wax using the supercritical extraction method of the present invention is excellent.

Experimental Example  3: Change in Extraction Efficiency of Wax with Aging Temperature

In the manufacturing process of the wax according to Examples 1 and 2, the aging temperature was changed to 20, 30, 32, 34, 35, 38, 40, 60 ° C to prepare wax and the extraction efficiency was measured. The extraction efficiency of the wax was compared in terms of yield by measuring the amount of wax contained in the extracted sesame oil or olive oil. The efficiency was calculated as 100% of the total amount of wax contained in sesame or olive and the weight of the extracted wax in percentage.

As shown in the results of Table 6, the wax showed high extraction efficiency at aging temperature of 32 ~ 38 ℃, especially the highest at 35 ℃.

Extraction Efficiency of Wax According to Aging Temperature Temperature (℃) 20 30 32 34 35 38 40 60 Extraction efficiency (%) Sesame raw material 76.0 85.4 93.5 96.9 98.3 96.4 80.3 41.3 Olive raw material 68.3 79.3 89.4 90.2 97.8 98.1 89.3 58.2

Experimental Example  4: change in yield of wax with aging period

In the manufacturing process of the wax according to Examples 1 and 2, the aging period was changed to 1, 4, 7, 11, 15, 20, 25, 30, 40 days to prepare wax and the extraction efficiency was measured. The extraction efficiency of the wax was compared in terms of yield by measuring the amount of wax contained in the extracted sesame oil or olive oil. The efficiency was calculated as 100% of the total amount of wax contained in sesame or olive and the weight of the extracted wax in percentage.

As shown in the results of Table 7, the wax showed high extraction efficiency during the aging period of 7-30 days, especially at 15 days.

Extraction Efficiency of Wax with Ripening Period Duration (days) One 4 7 11 15 20 25 30 40 Extraction efficiency (%) Sesame raw material 32.1 80.2 93.5 95.9 98.3 98.3 98.4 98.5 98.4 Olive raw material 25.9 46.3 88.3 93.2 94.9 96.8 98.1 98.3 98.0

As described above, the method of extracting and purifying the vegetable wax of the present invention, as described through the above embodiment, extracts the wax and the extraction mixture through supercritical extraction after drying or roasting the raw material, and matures it, followed by filtering the lower wax layer. Since it is an excellent effect that can provide a method for purifying the vegetable wax with high efficiency by the post-purification is a very useful invention in the food industry.

Claims (10)

Drying or roasting the vegetable raw materials at 100 to 250 ° C. for 5 to 50 minutes; Grinding the raw material dried or roasted in the step; Filling the raw material powder obtained in the above step into a supercritical extractor to extract an extraction mixture including wax using a supercritical carbon dioxide at a temperature of 35 to 80 ° C., a pressure of 350 to 500 bar, and a flow rate of 0.0085 to 1 m / sec; Extracting the extract mixture including the wax obtained in the above step by leaving the mixture at -5 ~ 40 ℃ for 7 to 30 days to be separated into an upper and lower layers; Separating only the lower layer of the upper and lower layers obtained in the above step and filtering using a filter press to obtain a solid comprising wax; And Purifying the solids obtained in the above step to prepare a wax Extraction and purification method of the vegetable wax comprising a. delete The method of extracting and purifying vegetable wax according to claim 1, wherein the pulverization of the raw material is pulverizing so that the particle size of the raw material is 1.25 mm or less in particle size. delete delete delete The method of claim 1, wherein in addition to the supercritical carbon dioxide, one or more co-solvents selected from the group consisting of ethanol, iso-propanol, methanol, normal hexane, acetone, and water are added. A method for extracting and purifying vegetable waxes. 8. The method of claim 7, wherein the cosolvent is used at a concentration of 1-50%. delete A vegetable wax derived from a vegetable oil or fat produced by the method according to any one of claims 1, 3, 7, or 8.

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