CN112852539A - Process for extracting fresh zanthoxylum oil resin and aromatic oil by low-temperature negative-pressure water fractionation method - Google Patents
Process for extracting fresh zanthoxylum oil resin and aromatic oil by low-temperature negative-pressure water fractionation method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000003921 oil Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 59
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- 238000005194 fractionation Methods 0.000 title claims abstract description 18
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/02—Pretreatment
- C11B1/04—Pretreatment of vegetable raw material
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/10—Production of fats or fatty oils from raw materials by extracting
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- Organic Chemistry (AREA)
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- Fats And Perfumes (AREA)
Abstract
The invention relates to the field of pepper processing, in particular to a process for extracting fresh pepper oleoresin and aromatic oil by a low-temperature negative-pressure water fractionation method, which comprises the following steps: s1, crushing fresh pepper by using a cold rolling mill, adding clear water in the process to obtain a first mixed solution, and filtering the first mixed solution; s2, adding clear water into the crushed pepper particles, performing solid-liquid separation by using a spiral dehydrator to obtain a second mixed solution, and filtering the second mixed solution; s3, pumping the first mixed solution and the second mixed solution into a distilling kettle for distillation, then condensing to obtain an aromatic oil mixed solution of zanthoxylum oil and water, and performing oil-water separation to obtain a zanthoxylum oil finished product; s4, pumping the remaining third mixed solution into a cold and hot cylinder, adding natural vegetable oil, heating and stirring; s5, carrying out oil, water and slag three-phase separation on the heated and stirred third mixed solution; a large amount of water is used as an entrainer, the pepper is crushed by a cold rolling mill, so that the components in the pepper are completely released, and the flavor of the extract is ensured by a low-pressure extraction mode.
Description
Technical Field
The invention belongs to the field of pepper processing, and particularly relates to a process for extracting fresh pepper oleoresin and aromatic oil by a low-temperature negative-pressure water fractionation method.
Background
The zanthoxylum bungeanum is a peculiar spice crop in China, a zanthoxylum bungeanum extract with high hemp degree, namely, zanthoxylum bungeanum oleoresin which is called traditionally is widely applied in the field of food industry, the demand increases year by year, the zanthoxylum bungeanum oleoresin is extracted by adopting a supercritical carbon dioxide extraction technology, the equipment used by the technology has higher price and expensive operation cost, and the technology is difficult to bear by small and medium enterprises. During the airing and baking process of fresh zanthoxylum bungeanum fruits, a large amount of aromatic substances are oxidized and dissipated, the amount of aromatic substances separated from the zanthoxylum oil resin extracted by the supercritical carbon dioxide extraction technology is small, and the original flavor of the fresh zanthoxylum bungeanum is lost, the reaction is carried out for a long time under the condition of ultrahigh pressure in the implementation process of the technology, firstly, the aromatic substances and the numb taste substances are greatly damaged, and secondly, for the processing of the zanthoxylum bungeanum, because the ripening time of the zanthoxylum bungeanum in the same region is close, a large amount of ripe zanthoxylum bungeanum needs to be processed, and the capacity requirement of the; a large amount of vegetable oil is needed for assisting when the pepper oil is separated by cold rolling of the traditional fresh pepper, and the vegetable oil with the weight 1-3 times of that of the pepper juice is generally needed, so that the consumption is huge, and the enterprise capital is wasted.
Disclosure of Invention
The invention provides a process for extracting fresh zanthoxylum oleoresin and aromatic oil by a low-temperature negative-pressure water fractionation method, which aims to solve the problems: is applied to fresh pepper, and comprises the following steps:
s1, crushing fresh peppers by using a cold rolling mill, adding clear water in the crushing process to obtain a first mixed solution containing a pepper aromatic oil component and a numbing element component, filtering the first mixed solution, and then putting the filtered first mixed solution into a temporary storage tank;
s2, adding clear water into the crushed pepper particles, performing solid-liquid separation by using a spiral dehydrator to obtain a second mixed solution containing pepper aromatic oil components and numb taste component, filtering the second mixed solution, and putting the second mixed solution into a temporary storage tank;
s3, pumping the filtered first mixed solution and the filtered second mixed solution into a lifting kettle for negative pressure steam distillation, condensing the distilled gas to obtain an aromatic oil mixed solution of zanthoxylum oil and water, and performing oil-water separation to obtain a zanthoxylum oil product;
s4, pumping the third mixed solution left in the extraction pot in the step S3 into a cold and hot cylinder, and adding natural vegetable oil for heating and stirring;
s5, performing oil, water and residue three-phase separation on the third mixed solution which is heated and stirred in the step S4 by using a disc-type centrifuge to obtain fresh pepper oleoresin, a mixed solution containing a small amount of numb-taste components and pepper powder;
and S6, heating the obtained fresh zanthoxylum oil resin by a cold and hot cylinder, and separating residues by using a disc centrifuge alone to obtain a fresh zanthoxylum oil resin finished product.
Preferably, a step S51 is further included between the steps S5 and S6, and the step S51 includes: and S5, precipitating the mixed solution containing a small amount of numbing elements in the sedimentation tank, pumping the liquid above the middle layer into a cold and hot cylinder, adding natural vegetable oil, heating and stirring, and repeating the step S5 after stirring.
Preferably, in the step S1, the weight of the added clean water is 0.7-1.5 times of the weight of the fresh pepper.
Preferably, in the step S3, the relative pressure of the water vapor is between-0.05 and-0.07 MPa.
Preferably, in the step S3, the distillation time is 15 to 25 minutes.
Preferably, in the step S3, the temperature in the kettle is controlled to be 60-80 ℃.
Preferably, in the step S4, the cooling/heating tank heats the third mixed solution to 70 to 100 ℃.
Preferably, in step S4, the weight of the natural vegetable oil is 2% to 8% of the weight of the third mixed solution.
Preferably, the first mixed solution and the second mixed solution are filtered by a 100-mesh filter screen and then are stored in a temporary storage tank together.
Preferably, the fresh zanthoxylum oleoresin obtained in the steps S5 and S6 is mixed and heated to 90-100 ℃, and another disc centrifuge is independently used for separating again to obtain a fresh zanthoxylum oleoresin finished product.
The invention has the following beneficial effects: the process for extracting fresh pepper oleoresin and aromatic oil by a low-temperature negative-pressure water fractionation method is applied to fresh pepper, a large amount of water is used as an entrainer, the pepper is crushed by a cold rolling mill, so that components in the pepper are completely released, and then the distillation temperature is reduced in a low-pressure extraction mode, so that the flavor of an extract is ensured.
Drawings
FIG. 1 is a block diagram of a process flow in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in figure 1, the process for extracting fresh zanthoxylum oleoresin and aromatic oil by a low-temperature negative-pressure water fractionation method is applied to fresh zanthoxylum, and comprises the following steps:
s1, crushing fresh peppers by using a cold rolling mill, adding clear water in the crushing process to obtain a first mixed solution containing a pepper aromatic oil component and a numbing element component, filtering the first mixed solution, and then putting the filtered first mixed solution into a temporary storage tank;
s2, adding clear water into the crushed pepper particles, performing solid-liquid separation by using a spiral dehydrator to obtain a second mixed solution containing pepper aromatic oil components and numb taste component, filtering the second mixed solution, and putting the second mixed solution into a temporary storage tank;
s3, pumping the filtered first mixed liquid and the filtered second mixed liquid into a lifting kettle for negative pressure steam distillation, condensing the gas obtained by distillation to obtain a mixed liquid of zanthoxylum oil and aromatic oil of water, carrying out oil-water separation to obtain a finished product of zanthoxylum oil, and specifically condensing by using a heat exchanger to obtain a mixed liquid of distilled water and aromatic oil, and carrying out oil-water separation to obtain a pure finished product of fresh zanthoxylum oil;
s4, pumping the third mixed solution left in the extraction pot in the step S3 into a cold and hot cylinder, and adding natural vegetable oil for heating and stirring;
s5, performing oil, water and residue three-phase separation on the third mixed solution which is heated and stirred in the step S4 by using a disc-type centrifuge to obtain fresh pepper oleoresin, a mixed solution containing a small amount of numb-taste components and pepper powder;
and S6, heating the obtained fresh zanthoxylum oil resin by a cold and hot cylinder, and separating residues by using a disc centrifuge alone to obtain a fresh zanthoxylum oil resin finished product.
The low-temperature negative-pressure water fractionation method adopted by the process takes a large amount of water as an entrainer, the pepper is crushed by a cold rolling mill, so that the components in the pepper are completely released, and then the distillation temperature is reduced by a low-pressure extraction mode, so that the flavor of the extract is ensured.
Preferably, step S51 is further included between steps S5 and S6, and step S51 includes: and S5, precipitating the mixed solution containing a small amount of numb element in a precipitation tank, pumping the liquid above the middle layer into a cold and hot cylinder, adding natural vegetable oil, heating and stirring to 90-100 ℃, generally, repeating the step S5 after stirring, and finishing the maximum extraction and recovery of fresh zanthoxylum oleoresin, wherein the liquid above the middle layer is the liquid mainly containing zanthoxylum oil, the height of the whole mixed solution containing a small amount of numb element can be equally divided into an upper layer, a middle layer and a lower layer, the zanthoxylum oil mainly exists in the middle layer and the upper layer, and the residual water after separation is discharged into a waste water tank.
Purchasing fresh fruit grains which are not damaged, deteriorate and free of impurities, uniformly inputting fresh pepper into a feeding port of a cold rolling mill, adding clear water, wherein the weight of the added clear water is 0.7-1.5 times of the weight of the fresh pepper, carrying out crushing treatment, filtering mixed liquid after the crushing treatment to remove peel and fruit stones, wherein the first mixed liquid contains a large amount of aromatic oil components and numb elements, the first mixed liquid and the second mixed liquid are filtered by a 100-mesh filter screen and then are jointly stored in a temporary storage tank, for processing a batch of pepper fruit grains, when the stored mixed liquid in the temporary storage tank reaches a certain amount, pumping the mixed liquid into a lifting kettle, generally speaking, the amount of the mixed liquid placed in the temporary storage tank is combined with the putting speed, namely the production speed of the mixed liquid can meet the speed of pumping into the lifting kettle, and during distillation, the relative pressure of negative pressure distilled water vapor is-0.05 to-0.07 Mpa, or the vacuum degree is 30Kpa-50Kpa, the distillation time can be 15-25 minutes, the temperature in the extraction kettle is controlled at 60-80 ℃, the distillation is carried out, the condensation is carried out through a heat exchanger to obtain a mixed solution of condensed water and aromatic oil, the mixed solution is a clear liquid, and then oil-water separation is carried out to obtain a finished product of the zanthoxylum bungeanum aromatic oil with the purity of 100%.
Pumping the residual third mixed liquid containing a large amount of the numbing elements in the extraction kettle into a cold and hot cylinder, adding a proper amount of natural vegetable oil for heating and stirring, wherein the weight of the added natural vegetable oil is 2-8% of the weight of the third mixed liquid, and 5% is a preferred proportion, heating the third mixed liquid to 70-100 ℃ by the cold and hot cylinder, separating oil, water and residue of the stirred third mixed liquid by a disc centrifuge, and separating to obtain fresh zanthoxylum oleoresin, mixed liquid containing a small amount of the numbing elements and zanthoxylum powder discharged by the disc centrifuge, wherein the residue is dust brought by the growth environment of zanthoxylum fruits.
Preferably, the fresh zanthoxylum oil resin obtained in the steps S5 and S6 is mixed and heated to 90-100 ℃, another disc centrifuge is independently used for separating again to obtain a fresh zanthoxylum oil resin finished product, and after the fresh zanthoxylum oil resin finished product is heated and separated, the content of the numbing essence is 50-125 times of that of common edible zanthoxylum oil.
As the preferred scheme, in the whole processing process, different squeezing and dewatering machines are used for carrying out multiple times of treatment on fresh Chinese prickly ash fruit grains in the initial stage, the product yield can be improved, the waste of the numbing essence and the aromatic oil is reduced, the squeezed mixed liquid is only temporarily stored in a temporary storage tank, namely, the squeezed mixed liquid is pumped into a lifting kettle to carry out negative pressure distillation and extract the aromatic oil, the loss of the aromatic oil in the subsequent processing process is avoided, the original flavor of the aromatic oil is ensured, and the Chinese prickly ash fruit grain processing agent can be eaten and also can be used for chemical addition of daily necessities such as toothpaste, skin care products.
The fresh zanthoxylum oil resin finished product is in a sticky state similar to honey, and subsequent productions are diluted to the concentration of common zanthoxylum oil according to requirements.
The purchasing cost of equipment such as a cold rolling mill, a spiral dehydrator and the like is low, for enterprises, the equipment investment is low, the processing process is simpler than that of extraction, and the pepper products with high hemp degree can be produced only by a large amount of investment in the traditional mode, so that the future development of pepper resources of agricultural products is facilitated, and the pepper products have incomparable value with other processes.
For a batch of pepper fruit particles, the processing only needs less than 1 hour, so that the production time is greatly saved, for the processing of fresh pepper, because the ripening time in the same region is close, a large amount of pepper is on the market, the requirement on the pepper processing capacity is strict, once the pepper can not be processed in time, the aromatic oil component in the raw material is inevitably lost, the quality of the pepper can not be ensured, and the loss is very large for the market application of agricultural products pepper.
One embodiment is as follows:
purchasing 11.5 tons of fresh Chinese origin green peppers picked on the same day and without any decay and deterioration, entering a factory, uniformly spreading the fresh Chinese origin green peppers in a raw material area, conveying the fresh pepper fruit grains to a feeding conveyor in a production area by using a conveyor, controlling the conveying speed of the feeding conveyor at 500kg per hour, and then feeding the materials into a pepper cold rolling mill at a constant speed for crushing while adding a proper amount of clear water into a feeding port of the cold rolling mill.
After the pepper cold mill is crushed, the mixed juice containing a large amount of pepper numbing elements and aromatic oil is filtered by a 100-mesh filter screen, the filtered juice is placed in a temporary storage tank with a better sealing effect for standby application, and pepper particles crushed by the pepper cold mill still contain a large amount of numbing elements and aromatic oil. The crushed pepper particles are conveyed into a spiral dehydrator by a feeding conveyer to be extruded and dehydrated, and meanwhile, a proper amount of clear water is added to assist dehydration.
The mixed juice separated from the spiral dehydrator is filtered by a 100-mesh filter and then is stored together with the previous mixed liquid and enters a temporary storage tank. The total amount of clear water added in the treatment process is controlled to be 1:1 of the weight of the fresh pepper raw material. Pumping the mixed liquor in the temporary storage tank into a lifting kettle for distillation, and metering the weight of the pumped juice to be about 1 ton. The distillation pressure is set to-0.07 Mpa, the distillation temperature is controlled at 80 ℃, the distillation time is 20 minutes, and the green zanthoxylum aromatic oil is obtained by condensing and separating oil from water.
Pumping the distilled juice into a cold and hot cylinder, adding 10 kilograms of vegetable oil, heating and stirring for 10 minutes, opening an outlet of the cold and hot cylinder after the temperature of the mixed solution in the cold and hot cylinder reaches above 90 ℃, allowing the mixed solution to slowly flow into a disc type centrifuge for first oil, water and residue separation, wherein the separated fresh zanthoxylum oil resin is a semi-finished product of the first-time filtered zanthoxylum oil, and the disc type centrifuge adopts the disc type centrifuge.
Separating the discharged oil-water mixed liquid by the first disc centrifuge, precipitating, pumping the middle-upper layer liquid into a cold-hot cylinder, adding 10 kg of vegetable oil into each ton of mixed liquid, wherein the weight ratio of the added vegetable oil is about 1%, heating and stirring to 90 ℃, performing second disc centrifuge separation, and mixing the separated fresh zanthoxylum oleoresin and the first filtered zanthoxylum oil together. And discharging the wastewater into a wastewater pool.
Filtering the mixed fresh zanthoxylum oil resin twice, and carrying out third separation and filtration by using a single disc centrifuge. The separated pure fresh zanthoxylum oil resin is the finished product, and the process is repeated until the processing of the fresh zanthoxylum raw material is finished. The fresh zanthoxylum oil resin finished product is in a sticky state similar to honey, and subsequent productions are diluted to the concentration of common zanthoxylum oil according to requirements.
By calculation, 313kg of high-hemp green zanthoxylum oil and 220kg of zanthoxylum aromatic oil are obtained in total. After detection, the content of the numb gourmet powder in the batch of green pricklyash peel oil is 133mg/g, and the batch of high-numb green pricklyash peel oil and the green pricklyash peel aromatic oil are respectively marked and then are stored in a refrigeration house.
In another embodiment:
purchasing 9.7 tons of fresh Chinese prickly ash picked on the day and without any decay and deterioration, entering a factory, uniformly spreading and placing the fresh Chinese prickly ash in a raw material area, conveying fresh prickly ash fruit particles to a feeding conveyor in a production area by using a conveyor, controlling the conveying speed of the feeding conveyor at 500kg per hour, then feeding the materials into a prickly ash cold rolling mill at a constant speed for crushing, and simultaneously adding a proper amount of clear water into a feeding port of the cold rolling mill.
After the pepper cold rolling mill is crushed, the mixed juice containing a large amount of pepper numbing essence and aromatic oil is filtered by a 100-mesh filter screen, and the filtered juice is placed in a temporary storage tank with a better sealing effect for later use.
The pepper particles after the crushing treatment of the pepper cold mill still contain a large amount of numbing elements and aromatic oil. The crushed pepper particles are conveyed into a spiral dehydrator by a feeding conveyer to be extruded and dehydrated, and meanwhile, a proper amount of clear water is added to assist dehydration.
The mixed juice separated from the spiral dehydrator is filtered by a 100-mesh filter and then is stored together with the previous mixed liquid and enters a temporary storage tank. The total amount of clear water added in the treatment process is controlled to be 1:1 of the weight of the fresh pepper raw material, and can also be controlled to be 1: 1.5.
pumping the mixed liquor in the temporary storage tank into a lifting kettle for distillation, and metering the weight of the pumped juice to be about 1 ton. The distillation pressure is set to-0.05 Mpa, the distillation temperature is controlled to 80 ℃, the distillation time is 20 minutes, and the aromatic oil is obtained by condensing and separating oil from water with distilled water.
Within the above range of the distillation temperature and the distillation time, the higher the distillation temperature is, the longer the distillation time is, and the better the effect is. Pumping the distilled juice into a cold and hot cylinder, adding 5 kg of vegetable oil, and heating and stirring for 10 minutes.
After the temperature of the mixed liquid in the cold and hot cylinder reaches above 90 ℃, the outlet of the cold and hot cylinder is opened, and the mixed liquid slowly flows into a disc centrifuge to carry out primary oil, water and slag separation. The separated fresh zanthoxylum oil resin is a half-finished product of the zanthoxylum oil which is filtered for the first time.
Separating the discharged oil-water mixed liquid by the first disc centrifuge, precipitating, pumping the middle-upper layer liquid into a cold-hot cylinder, adding 5 kg of vegetable oil into each ton of water, heating and stirring to 90 ℃, and then separating by the second disc centrifuge. The separated fresh zanthoxylum oil resin is mixed with the zanthoxylum oil filtered for the first time, and the waste water is discharged into a waste water tank.
Filtering the mixed fresh zanthoxylum oil resin twice, and carrying out third separation and filtration by using an independent disc centrifuge to obtain pure fresh zanthoxylum oil resin which is a finished product.
Repeating the above processes until the processing of the fresh pepper raw material is finished.
Through calculation, 199kg of fresh pepper oleoresin and 88kg of pepper aromatic oil are obtained in total. After detection, the content of the numb gourmet powder in the batch of zanthoxylum oil is 244mg/g, and the batch of fresh zanthoxylum oleoresin and zanthoxylum aromatic oil are respectively marked and then are stored in a refrigeration house.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and those skilled in the art should make various changes, modifications, alterations, and substitutions on the technical solution of the present invention without departing from the spirit of the present invention, which falls within the protection scope defined by the claims of the present invention.
Claims (10)
1. The process for extracting fresh pepper oleoresin and aromatic oil by a low-temperature negative-pressure water fractionation method is applied to fresh pepper, and is characterized by comprising the following steps of:
s1, crushing fresh peppers by using a cold rolling mill, adding clear water in the crushing process to obtain a first mixed solution containing a pepper aromatic oil component and a numbing element component, filtering the first mixed solution, and then putting the filtered first mixed solution into a temporary storage tank;
s2, adding clear water into the crushed pepper particles, performing solid-liquid separation by using a spiral dehydrator to obtain a second mixed solution containing pepper aromatic oil components and numb taste component, filtering the second mixed solution, and putting the second mixed solution into a temporary storage tank;
s3, pumping the filtered first mixed solution and the filtered second mixed solution into a lifting kettle for negative pressure steam distillation, condensing the distilled gas to obtain an aromatic oil mixed solution of zanthoxylum oil and water, and performing oil-water separation to obtain a zanthoxylum oil product;
s4, pumping the third mixed solution left in the extraction pot in the step S3 into a cold and hot cylinder, and adding natural vegetable oil for heating and stirring;
s5, performing oil, water and residue three-phase separation on the third mixed solution which is heated and stirred in the step S4 by using a disc-type centrifuge to obtain fresh pepper oleoresin, a mixed solution containing a small amount of numb-taste components and pepper powder;
and S6, heating the obtained fresh zanthoxylum oil resin by a cold and hot cylinder, and separating residues by using a disc centrifuge alone to obtain a fresh zanthoxylum oil resin finished product.
2. The process for extracting fresh zanthoxylum oil resin and aromatic oil by the low-temperature negative-pressure water fractionation method according to claim 1, wherein the process comprises the following steps: a step S51 is further included between the steps S5 and S6, and the step S51 includes: and S5, precipitating the mixed solution containing a small amount of numbing elements in the sedimentation tank, pumping the liquid above the middle layer into a cold and hot cylinder, adding natural vegetable oil, heating and stirring, and repeating the step S5 after stirring.
3. The process for extracting fresh zanthoxylum oil resin and aromatic oil by the low-temperature negative-pressure water fractionation method according to claim 1, wherein the process comprises the following steps: in the step S1, the weight of the added clear water is 0.7-1.5 times of the weight of the fresh pepper.
4. The process for extracting fresh zanthoxylum oil resin and aromatic oil by the low-temperature negative-pressure water fractionation method according to claim 1, wherein the process comprises the following steps: in the step S3, the relative pressure of the water vapor is-0.05 to-0.07 Mpa.
5. The process for extracting fresh zanthoxylum oil resin and aromatic oil by the low-temperature negative-pressure water fractionation method according to claim 4, wherein the process comprises the following steps: in the step S3, the distillation time is 15-25 minutes.
6. The process for extracting fresh zanthoxylum oil resin and aromatic oil by the low-temperature negative-pressure water fractionation method according to claim 5, wherein the process comprises the following steps: in the step S3, the temperature in the kettle is controlled to be 60-80 ℃.
7. The process for extracting fresh zanthoxylum oil resin and aromatic oil by the low-temperature negative-pressure water fractionation method according to claim 1, wherein the process comprises the following steps: in step S4, the cooling/heating tank heats the third mixed solution to 70-100 ℃.
8. The process for extracting fresh zanthoxylum oil resin and aromatic oil by the low-temperature negative-pressure water fractionation method according to claim 1, wherein the process comprises the following steps: in the step S4, the weight of the added natural vegetable oil is 2% to 8% of the weight of the third mixed solution.
9. The process for extracting fresh zanthoxylum oil resin and aromatic oil by the low-temperature negative-pressure water fractionation method according to claim 1, wherein the process comprises the following steps: the first mixed liquid and the second mixed liquid are filtered by a 100-mesh filter screen and then are stored in a temporary storage tank together.
10. The process for extracting fresh zanthoxylum oil resin and aromatic oil by the low-temperature negative-pressure water fractionation method according to claim 2, wherein: the production method further includes step S7: and (4) mixing the fresh zanthoxylum oleoresin obtained in the steps S5 and S6, heating to 90-100 ℃, and performing separation operation again by using another disc-type centrifuge independently to obtain a fresh zanthoxylum oleoresin finished product.
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| CN113801732A (en) * | 2021-09-29 | 2021-12-17 | 四川天味食品集团股份有限公司 | Prevent CO2Supercritical extraction method of pepper oleoresin crystals |
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