阅读说明：本技术 一种苦荞麦活性肽提取方法及专用装置 (Method for extracting tartary buckwheat active peptide and special device ) 是由 方玉梅 谭萍 韩世明 于 2021-10-12 设计创作，主要内容包括：本发明公开了一种苦荞麦活性肽提取方法及专用装置,专用装置包括离心机、摇床、搅拌釜,对苦荞麦粉进行脱脂处理,随后酶解苦荞麦粉,所得苦荞麦蛋白提取液再次酶解、冻干既得活性肽干粉,苦荞麦粉脱脂处理时,通过蒸发分离筒、冷凝储藏筒完成石油醚的循环利用,同时搅拌釜内抽真空,结团的苦荞麦粉通过加压再喷出,使结团的苦荞麦粉爆开,加快脱脂。本发明所述的一种苦荞麦活性肽提取方法及专用装置,具有结构合理、使用方便等优点,有效解决现有苦荞麦生产工艺及设备落后的问题。(The invention discloses a method for extracting active peptide from tartary buckwheat and a special device, wherein the special device comprises a centrifugal machine, a shaking table and a stirring kettle, the tartary buckwheat powder is subjected to degreasing treatment, then the tartary buckwheat powder is subjected to enzymolysis, the obtained tartary buckwheat protein extract is subjected to enzymolysis and freeze-drying again to obtain active peptide dry powder, when the tartary buckwheat powder is subjected to degreasing treatment, the cyclic utilization of petroleum ether is completed through an evaporation separation cylinder and a condensation storage cylinder, the stirring kettle is vacuumized, and the agglomerated tartary buckwheat powder is sprayed out again through pressurization, so that the agglomerated tartary buckwheat powder is exploded, and the degreasing is accelerated. The method and the special device for extracting the tartary buckwheat active peptide have the advantages of reasonable structure, convenience in use and the like, and effectively solve the problem that the existing tartary buckwheat production process and equipment are lagged behind.)

1. The utility model provides a tartary buckwheat active peptide extraction method and isolated plant, isolated plant includes centrifuge, shaking table, stirred tank (1), is equipped with on stirred tank (1) surface and keeps warm and presss from both sides cover (11), and stirred tank (1) top is equipped with feeder hopper (12), agitator motor (14) and pressure valve (15), and agitator motor (14) are connected characterized by with (mixing) shaft (13) transmission of setting in stirred tank (1) inner chamber: a supporting convex ring (17) is arranged at the upper end of the inner cavity wall of the stirring kettle (1), a plastic partition plate (18) is arranged at the lower end of the inner wall of the stirring kettle (1), and at least two lower magnets (19) are annularly embedded on the plastic partition plate (18);

the stirring kettle (1) is characterized in that a filter bag (2) is further arranged in an inner cavity of the stirring kettle (1), openings are formed in the upper end and the lower end of the filter bag (2), the opening edge of the upper end of the filter bag (2) is fixed with a support ring (22), the lower end face of the support ring (22) and the upper end face of a support convex ring (17) are in compression joint and sealed, the opening edge of the lower end of the filter bag (2) is fixed with at least two upper magnets (21), the at least two upper magnets (21) form a ring, the upper magnets (21) and the lower magnets (19) are in up-down correspondence and opposite in polarity, and the opening of the lower end of the filter bag (2) and the upper surface of a plastic partition plate (18) are in compression joint and sealed;

the stirring shaft (13) extends into the inner cavity of the filter bag (2), the tartary buckwheat powder enters the inner cavity of the filter bag (2) from the feeding hopper (12), petroleum ether is injected into the inner cavity of the stirring kettle (1), and the stirring shaft (13) is driven by the stirring motor (14) to stir the mixture of the tartary buckwheat powder and the petroleum ether for 8-16h for degreasing;

an inner cavity of the stirring kettle (1) below the plastic partition plate (18) is connected with a lower oil pump (41) through an oil pumping pipe, and the lower oil pump (41) is connected with the evaporation separation cylinder (4); an electric heating plate (42) is arranged at the bottom of the evaporation separation cylinder (4) and used for heating a mixture of petroleum ether and tartary buckwheat grease, and an oil discharge pipe (43) is arranged at the lower end of the evaporation separation cylinder (4) and used for discharging the tartary buckwheat grease; a plurality of evaporation pipes (44) are vertically arranged at the top of the evaporation separation cylinder (4) and are used for conveying petroleum ether steam upwards;

the upper end of the evaporation pipe (44) extends into the bottom of the condensation storage cylinder (5), the top opening of the evaporation pipe (44) is positioned at the upper end of the inner cavity of the condensation storage cylinder (5), the evaporation pipe (44) is fixedly connected with the condensation storage cylinder (5), the condensation storage cylinder (5) is wound with a condensation pipe (52) for cooling petroleum ether steam, so that the petroleum ether steam is liquefied and stored in the condensation storage cylinder (5), the bottom of the inner cavity of the condensation storage cylinder (5) is provided with an oil feeding pump (53), and the oil feeding pump (53) is connected with the upper end of the inner cavity of the stirring kettle (1) through an oil feeding pipe (51);

the vacuum pipe (16) is further arranged on the stirring kettle (1), the vacuum pipe (16) is connected with an external air pump, after the tartary buckwheat flour is degreased, liquid petroleum ether is pumped to the evaporation separation cylinder (4) through the lower oil pump (41), the vacuum pipe (16) pumps the petroleum ether steam in the stirring kettle (1) under the action of the air pump, and meanwhile, the tartary buckwheat flour is stirred by the stirring shaft (13) until the petroleum ether is removed;

adjusting the pH value of the degreased tartary buckwheat powder to 8-11, adjusting the temperature in the stirring kettle (1) to 55-65 ℃ through a heat preservation jacket (11), adding alkaline protease, stirring and performing enzymolysis, wherein the enzyme amount is 0.01% -0.05% of the weight of the degreased tartary buckwheat, and performing enzymolysis for 3-7 h;

after the enzymolysis is finished, taking out the mixture in the stirring kettle (1), centrifuging for 10min in a 4000r/min centrifuge, taking the supernatant for later use, adding S-8 macroporous adsorption resin with the volume of 1/2, decoloring for 4 hours on a shaking table, and keeping the supernatant for later use;

adjusting the pH value of the supernatant to 6-8, injecting the supernatant into a stirring kettle (1), adjusting the temperature in the stirring kettle (1) to 45-65 ℃ through a heat-preservation jacket (11), adding papain, stirring and carrying out enzymolysis, wherein the enzyme addition amount is 0.01-0.05 percent of the weight of the degreased tartary buckwheat, and carrying out enzymolysis for 3-7 h; and after the enzymolysis is finished, centrifuging in a 4000r/min centrifuge for 10min, and freeze-drying the obtained supernatant to obtain the tartary buckwheat active peptide finished product.

2. The method and the special device for extracting the tartary buckwheat active peptide according to the claim 1 are characterized in that: the food-grade silica gel layer is coated on the lower end face of the support ring (22) and the upper end face of the support convex ring (17), so that the support ring (22) and the support convex ring (17) are mutually sealed when in compression joint, and tartary buckwheat powder is prevented from falling into a cavity between the filter bag (2) and the stirring kettle (1).

3. The method and the special device for extracting the tartary buckwheat active peptide according to the claim 1 are characterized in that: the tartary buckwheat powder is sieved by a sieve of 40-80 meshes before being added into the stirring kettle (1).

4. The method and the special device for extracting the tartary buckwheat active peptide according to the claim 1 are characterized in that: the plastic partition plate (18) is provided with a circulating feed pipe (3) at the position below the filter bag (2), the middle section of the circulating feed pipe (3) is provided with a feed pump (31) and a feed valve (33), the other end of the circulating feed pipe (3) extends into the upper end of the inner cavity of the stirring kettle (1), and the upper end is fixedly provided with a spray head (34).

5. The method and the special device for extracting the tartary buckwheat active peptide according to the claim 4 are characterized in that: and a discharge pipe (32) is arranged at the position, between the feeding pump (31) and the feeding valve (33), of the circulating feeding pipe (3).

6. The method and the special device for extracting the tartary buckwheat active peptide according to the claim 4 are characterized in that: the spray head (34) comprises a connecting section (341), one end of the connecting section (341) is fixedly connected with the circulating feed pipe (3), the other end of the connecting section (341) is fixedly provided with a fan-shaped section (342), and the inner cavity of the fan-shaped section (342) is gradually narrowed from the connecting section (341) to the fan-shaped section (342).

7. The method and the special device for extracting the tartary buckwheat active peptide according to the claim 6 are characterized in that: a cutting sleeve (343) is fixedly arranged on an opening at one end of the fan-shaped section (342) far away from the connecting section (341), the opening on the cutting sleeve (343) is aligned with the opening at the end of the fan-shaped section (342), and a plurality of cutting blades (344) are uniformly arranged on the opening of the cutting sleeve (343).

Technical Field

The invention relates to the field of food processing, in particular to a method for extracting tartary buckwheat active peptide and a special device.

Background

It is known that the active peptide of tartary buckwheat is a mixture of small peptide and amino acid generated by hydrolyzing protein powder of tartary buckwheat through protease, and the active peptide of tartary buckwheat is easier to digest and absorb by human body. Researchers at home and abroad in recent years continuously discover that the hydrolysate prepared by hydrolyzing the tartary buckwheat flour has the effects of reducing blood and liver cholesterol, inhibiting in-vivo lipopexia, promoting excretion, improving constipation, inhibiting tumors, delaying senescence, inhibiting the absorption of harmful substances and the like, and the tartary buckwheat flour is regarded as a high-grade nutritional health-care product at home and abroad. Therefore, with the intensive research and development of tartary buckwheat, the nutritional value and the health care function of tartary buckwheat are more and more clearly understood and more attention is paid to people. Therefore, it is necessary to invent a method for extracting the active peptide of tartary buckwheat and a special device thereof.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the problems, the method and the special device for extracting the tartary buckwheat active peptide have the advantages of reasonable structure, convenience in use and the like, and effectively solve the problem that the existing tartary buckwheat production process and equipment are lagged behind.

The technical scheme adopted by the invention for solving the technical problems is as follows: a method for extracting bioactive peptide of tartary buckwheat and a special device are disclosed, wherein the special device comprises a centrifugal machine, a shaking table and a stirring kettle, a heat-preservation jacket is arranged on the outer surface of the stirring kettle, a feed hopper, a stirring motor and a pressure valve are arranged at the top of the stirring kettle, the stirring motor is in transmission connection with a stirring shaft arranged in an inner cavity of the stirring kettle, a supporting convex ring is arranged at the upper end of the inner cavity wall of the stirring kettle, a plastic partition plate is arranged at the lower end of the inner wall of the stirring kettle, and at least two lower magnets are annularly embedded on the plastic partition plate;

the inner cavity of the stirring kettle is also provided with a filter bag, the upper end and the lower end of the filter bag are both provided with openings, the edge of the opening at the upper end of the filter bag is fixed with a support ring, the lower end surface of the support ring and the upper end surface of a support convex ring are mutually pressed and sealed, the edge of the opening at the lower end of the filter bag is fixed with at least two upper magnets, at least two upper magnets form a ring, the upper magnets and the lower magnets are vertically corresponding in position and opposite in polarity, so that the opening at the lower end of the filter bag is pressed and sealed with the upper surface of the plastic partition plate;

the stirring shaft extends into the inner cavity of the filter bag, the tartary buckwheat powder enters the inner cavity of the filter bag from the feed hopper, petroleum ether is injected into the inner cavity of the stirring kettle, and the mixture of the tartary buckwheat powder and the petroleum ether is stirred by the stirring shaft under the driving of the stirring motor for 8-16h for degreasing;

the inner cavity of the stirring kettle, which is positioned below the plastic partition plate, is connected with a lower oil pump through an oil pumping pipe, and the lower oil pump is connected with the evaporation separation cylinder; the bottom of the evaporation separation cylinder is provided with an electric heating plate for heating a mixture of petroleum ether and tartary buckwheat grease, and the lower end of the evaporation separation cylinder is provided with an oil discharge pipe for discharging tartary buckwheat grease; a plurality of evaporation pipes are vertically arranged at the top of the evaporation separation cylinder and used for conveying petroleum ether steam upwards;

the upper end of the evaporation pipe extends into the condensation storage cylinder from the bottom of the condensation storage cylinder, the top opening of the evaporation pipe is positioned at the upper end of the inner cavity of the condensation storage cylinder, the evaporation pipe is fixedly connected with the condensation storage cylinder, the condensation storage cylinder is wound with a condensation pipe for cooling petroleum ether steam, so that the petroleum ether steam is liquefied and stored in the condensation storage cylinder, the bottom of the inner cavity of the condensation storage cylinder is provided with an oil feeding pump, and the oil feeding pump is connected with the upper end of the inner cavity of the stirring kettle through the oil feeding pipe;

the vacuum pipe is also arranged on the stirring kettle and is connected with an external air pump, after the tartary buckwheat flour is degreased, liquid petroleum ether is pumped to the evaporation separation cylinder through the lower oil pump, the vacuum pipe pumps the petroleum ether steam in the stirring kettle under the action of the air pump, and meanwhile, the stirring shaft stirs the tartary buckwheat flour until the petroleum ether is removed;

adjusting pH value of the degreased tartary buckwheat powder to 8-11, adjusting temperature in a stirring kettle to 55-65 ℃ through a heat preservation jacket, adding alkaline protease, stirring and performing enzymolysis, wherein the enzyme amount is 0.01% -0.05% of the weight of the degreased tartary buckwheat, and performing enzymolysis for 3-7 h;

after the enzymolysis is finished, taking out the mixture in the stirring kettle, centrifuging for 10min in a 4000r/min centrifuge, taking the supernatant for later use, adding S-8 macroporous adsorption resin with the volume of 1/2, decoloring for 4 hours on a shaking table, and leaving the supernatant for later use;

adjusting the pH value of the supernatant to 6-8, injecting the supernatant into a stirring kettle, adjusting the temperature in the stirring kettle to 45-65 ℃ through a heat-preservation jacket, adding papain, stirring and performing enzymolysis, wherein the enzyme addition amount is 0.01% -0.05% of the weight of the degreased tartary buckwheat, and performing enzymolysis for 3-7 h; and after the enzymolysis is finished, centrifuging in a 4000r/min centrifuge for 10min, and freeze-drying the obtained supernatant to obtain the finished product of the tartary buckwheat active peptide.

Furthermore, the lower end face of the support ring and the upper end face of the support convex ring are coated with edible silica gel layers, so that the support ring and the support convex ring are mutually sealed when in compression joint, and tartary buckwheat powder is prevented from falling into a cavity between the filter bag and the stirring kettle.

Further, the tartary buckwheat flour is sieved by a 40-80 mesh sieve before being added into the stirring kettle.

Furthermore, a circulating feeding pipe is arranged at the position, below the filter bag, of the plastic partition plate, a feeding pump and a feeding valve are arranged on the middle section of the circulating feeding pipe, the other end of the circulating feeding pipe extends into the upper end of the inner cavity of the stirring kettle, and a spray head is fixedly arranged on the other end of the circulating feeding pipe.

Furthermore, a discharge pipe is arranged at a position, between the feeding pump and the feeding valve, of the circulating feeding pipe.

Further, the shower nozzle include the linkage segment, linkage segment one end and circulation conveying pipe fixed connection, the other end of linkage segment is fixed and is equipped with fan-shaped section, fan-shaped section inner chamber is narrowed toward fan-shaped section direction by the linkage segment gradually.

Furthermore, a cutting sleeve is fixedly arranged on an opening at one end, far away from the connecting section, of the fan-shaped section, an opening in the cutting sleeve is aligned with the opening at the end of the fan-shaped section, and a plurality of cutting blades are uniformly arranged on the opening of the cutting sleeve.

The invention has the beneficial effects that: a method for extracting active peptide from tartary buckwheat comprises a centrifuge, a shaking table and a stirring kettle, wherein the special device comprises the centrifuge, the shaking table and the stirring kettle, the tartary buckwheat powder is degreased, then an enzyme method is adopted to extract protein extract from the degreased tartary buckwheat powder, the extract is centrifuged, supernatant is taken to be decolored by the shaking table, and the supernatant is subjected to enzymolysis and freeze-drying again to prepare a tartary buckwheat active peptide dry powder finished product; in the degreasing process of the tartary buckwheat, the tartary buckwheat powder is loaded in a filter bag and stirred, meanwhile, petroleum ether is injected into a stirring kettle to soak the tartary buckwheat powder, and fat in the tartary buckwheat powder is dissolved in the petroleum ether by utilizing the characteristic of similar intermiscibility, so that the degreasing purpose is achieved; petroleum ether is pumped into an evaporation separation cylinder by a lower oil pump to be heated, so that the petroleum ether is evaporated and separated from the tartary buckwheat grease, petroleum ether steam enters a condensation storage cylinder to be condensed into liquid state again and is pumped into a stirring kettle to participate in degreasing, thereby forming the cyclic utilization of the petroleum ether and reducing the outward discharge of the petroleum ether; in the degreasing process, the tartary buckwheat powder is pumped by a feeding pump and is conveyed into a spray head to be pressurized, and then is sprayed out by the spray head, meanwhile, an external air pump vacuumizes the stirring kettle through a vacuum tube, when the tartary buckwheat powder is sprayed out by the spray head, the internal air pressure of the agglomerated tartary buckwheat powder is higher than the inner cavity of the stirring kettle, so that the agglomerated tartary buckwheat powder is exploded, and the degreasing is accelerated; has the advantages of reasonable structure, convenient use and the like, and effectively solves the problem that the prior tartary buckwheat production process and equipment are backward.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of the overall appearance structure of a stirred tank of the method for extracting tartary buckwheat active peptide and a special device of the invention;

FIG. 2 is a schematic diagram of the internal structure of a stirred tank of the method for extracting active peptide from tartary buckwheat and a special device for the method;

FIG. 3 is a schematic diagram of the structure of the inner cavity wall of a stirring kettle of the method for extracting the tartary buckwheat active peptide and the special device;

FIG. 4 is a schematic diagram of the structure of a filter bag of a stirring kettle of the method for extracting the tartary buckwheat active peptide and the special device;

FIG. 5 is a schematic view of the appearance of a nozzle of a stirring kettle of the method for extracting the active peptide of tartary buckwheat and a special device for the method;

FIG. 6 is a schematic view of the internal structure of the nozzle of the stirring kettle of the method for extracting the active peptide of tartary buckwheat and the special device;

FIG. 7 is a schematic diagram of the internal structures of a condensation storage cylinder and an evaporation separation cylinder of a stirring kettle of the method for extracting the tartary buckwheat active peptide and the special device.

The scores in the figures are as follows:

1. the device comprises a stirring kettle, 11, a heat-preservation jacket, 12, a feed hopper, 13, a stirring shaft, 14, a stirring motor, 15, a pressure valve, 16, a vacuum pipe, 17, a supporting convex ring, 18, a plastic partition plate, 19, a lower magnet, 2, a filter bag, 21, an upper magnet, 22, a supporting ring, 3, a feeding pipe, 31, a feeding pump, 32, a discharging pipe, 33, a feeding valve, 34, a spray head, 341, a connecting section, 342, a fan-shaped section, 343, a dividing sleeve, 344, a dividing blade, 4, an evaporation separation barrel, 41, a lower oil pump, 42, an electric heating plate, 43, an oil discharging pipe, 44, an evaporation pipe, 5, a condensation storage barrel, 51, an oil injection pipe, 52, a condensation pipe, 53 and an upper oil pump.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

A method for extracting active peptide from radix Et rhizoma Fagopyri Tatarici and a special device thereof are provided, wherein the special device comprises a centrifuge, a shaking table, and a stirring kettle 1.

The outer surface of the stirring kettle 1 shown in fig. 1 to 7 is provided with a heat preservation jacket 11, the heat preservation jacket 11 is connected with an external heat source, a temperature sensing device is arranged in the heat preservation jacket to adjust the temperature, the top of the stirring kettle 1 is provided with a cover body, the cover body is provided with a feed hopper 12, a stirring motor 14 and a pressure valve 15, the connection part of the feed hopper 12, the stirring motor 14 and the cover body is sealed to prevent petroleum ether from gasifying and overflowing, the stirring motor 14 is in transmission connection with a stirring shaft 13 arranged in the inner cavity of the stirring kettle 1, the stirring shaft 13 is provided with a stirring structure, such as a blade, a stirring rod and the like, and the stirring shaft 13 is driven by the stirring motor 14 to stir the tartary buckwheat flour.

As shown in fig. 3, a supporting convex ring 17 is arranged at the upper end of the inner cavity wall of the stirring kettle 1, a plastic partition plate 18 is arranged at the lower end of the inner wall of the stirring kettle 1, at least two lower magnets 19 are annularly embedded on the plastic partition plate 18, and a gap is arranged between the edge of the plastic partition plate 18 and the inner wall of the stirring kettle 1.

As shown in fig. 2, a filter bag 2 is further arranged in the inner cavity of the stirring kettle 1.

As shown in FIG. 4, the upper and lower ends of the filter bag 2 are provided with openings, wherein the upper opening edge of the filter bag 2 is fixed with the support ring 22, as shown in FIG. 2, the lower end face of the support ring 22 and the upper end face of the support convex ring 17 are pressed and sealed with each other.

As shown in fig. 4, the edge of the lower end opening of the filter bag 2 is fixed with at least two upper magnets 21, the at least two upper magnets 21 form a ring, the upper magnets 21 and the lower magnets 19 are vertically corresponding and have opposite polarities, so that the lower end opening of the filter bag 2 is in press-contact sealing with the upper surface of the plastic partition plate 18, and simultaneously, the filter bag 2 is pulled and unfolded downwards, so that the support ring 22 at the upper end of the filter bag 2 is pressed against the support convex ring 17, as shown in fig. 2.

The stirring shaft 13 extends into the inner cavity of the filter bag 2, the tartary buckwheat powder enters the inner cavity of the filter bag 2 from the feed hopper 12, petroleum ether is injected into the inner cavity of the stirring kettle 1, and the stirring shaft 13 stirs the mixture of the tartary buckwheat powder and the petroleum ether for 8-16h for degreasing under the drive of the stirring motor 14.

Petroleum ether is injected from the upper end of the stirring kettle 1, the petroleum ether penetrates through the filter bag 2 to infiltrate the tartary buckwheat powder, so that oil in the tartary buckwheat powder is dissolved into the petroleum ether, the stirring of the stirring shaft 13 accelerates the process of dissolving the tartary buckwheat oil into the petroleum ether, a cavity is formed between the filter bag 2 and the inner wall of the stirring kettle 1, the petroleum ether with the tartary buckwheat oil is conveniently separated from the tartary buckwheat powder, and the petroleum ether is separated, recycled and reused through the evaporation separation cylinder 4 and the condensation storage cylinder 5.

As shown in fig. 2 and 7, an inner cavity of the stirring kettle 1 below the plastic partition 18 is connected with a lower oil pump 41 through an oil pumping pipe, and the lower oil pump 41 is connected with the evaporation separation cylinder 4 and is used for pumping a mixture of petroleum ether and tartary buckwheat grease into the evaporation separation cylinder 4; the bottom of the evaporation separation cylinder 4 is provided with an electric heating plate 42 for heating a mixture of petroleum ether and tartary buckwheat grease, because the gasification temperature of the tartary buckwheat grease is far higher than the petroleum ether, the heating temperature of the electric heating plate 42 is higher than the gasification temperature of the petroleum ether, and is lower than the gasification temperature of the tartary buckwheat grease, so that the petroleum ether is gasified, and the top of the evaporation separation cylinder 4 is vertically provided with a plurality of evaporation tubes 44 for upwards conveying petroleum ether steam.

As shown in FIG. 7, the lower end of the evaporation separation cylinder 4 is provided with an oil discharge pipe 43 for discharging tartary buckwheat grease, and the oil discharge pipe 43 is flush with the lower end of the evaporation separation cylinder 4. In a possible embodiment, a liquid level switch is arranged in the evaporation separation cylinder 4 to measure the volume of the tartary buckwheat grease, when the volume reaches the standard, the lower oil pump 41 is closed, and an electric control valve on the oil discharge pipe 43 is automatically opened to discharge the tartary buckwheat grease.

As shown in fig. 7, the upper end of the evaporation tube 44 extends into the bottom of the condensation storage cylinder 5, the top opening of the evaporation tube 44 is located at the upper end of the inner cavity of the condensation storage cylinder 5, the evaporation tube 44 is fixedly connected with the condensation storage cylinder 5, the condensation storage cylinder 5 is wound with the condensation tube 52, the condensation tube 52 is connected with external refrigeration equipment, heat on the condensation storage cylinder 5 is taken away by a refrigerant injected into the condensation tube 52 for cooling petroleum ether vapor, so that the petroleum ether vapor is liquefied and stored in the condensation storage cylinder 5, the bottom of the inner cavity of the condensation storage cylinder 5 is provided with the oil feeding pump 53, the oil feeding pump 53 is connected with the upper end of the inner cavity of the stirring kettle 1 through the oil feeding tube 51, and pure liquid petroleum ether in the condensation storage cylinder 5 is injected into the stirring kettle under the action of the oil feeding pump 53, thereby achieving the technical effect of recycling and utilizing petroleum ether.

Because petroleum ether is a light petroleum product, a mixture of hydrocarbons of low relative molecular mass (primarily pentane and hexane), whose vapors or mists are irritating to the eyes, mucous membranes and respiratory tract. The product can cause peripheral neuritis, has strong irritation to skin, is harmful to environment, can cause pollution to water, soil and atmosphere, is extremely flammable and has strong irritation, and when the traditional process is used for degreasing by using petroleum ether, the petroleum ether is usually removed by adopting a ventilation cabinet air drying method, so that the efficiency is low, the petroleum ether is directly discharged to the external environment to cause pollution, and causes harm to operators, the petroleum ether is not recycled, the using amount of the petroleum ether is large, and the extraction cost of the protein peptide powder is increased.

As shown in fig. 2, a circulating feed pipe 3 is arranged at a position of the plastic partition 18 below the filter bag 2, a feed pump 31 and a feed valve 33 are arranged at the middle section of the circulating feed pipe 3, the other end of the circulating feed pipe 3 extends into the upper end of the inner cavity of the stirring kettle 1, and a spray head 34 is fixedly arranged at the end.

As shown in fig. 5 and 6, the nozzle 34 includes a connection section 341, one end of the connection section 341 is fixedly connected to the circular feeding pipe 3, a sector section 342 is fixedly disposed at the other end of the connection section 341, and an inner cavity of the sector section 342 is gradually narrowed from the connection section 341 to the sector section 342. A dividing sleeve 343 is fixedly arranged on an opening of one end of the fan-shaped section 342 far away from the connecting section 341, the opening of the dividing sleeve 343 is aligned with the opening of the end of the fan-shaped section 342, and a plurality of dividing blades 344 are uniformly arranged on the opening of the dividing sleeve 343.

In the tartary buckwheat powder degreasing process, the tartary buckwheat powder is easy to agglomerate due to the existence of factors such as surface tension, so that petroleum ether cannot be in contact with the tartary buckwheat powder in the agglomerate to influence the degreasing efficiency, and a certain amount of air is usually contained in the agglomerate.

The feeding pump 31 extracts the mixture of the tartary buckwheat powder and the petroleum ether from the bottom, conveys the mixture to the spray head 34, gradually pressurizes in the inner cavity of the spray head 34, compresses air in the agglomerated tartary buckwheat powder to form relatively high pressure, and is finally divided into small blocks by the dividing blade 344 when being sprayed out, so that the agglomerated tartary buckwheat powder is broken.

As shown in fig. 1 and 2, the stirring kettle 1 is further provided with a vacuum tube 16, the vacuum tube 16 is connected with an external air pump to vacuumize the inner cavity of the stirring kettle 1, and when the spray head sprays the agglomerated tartary buckwheat powder, the agglomerated tartary buckwheat powder is burst and crushed due to the high pressure of air in the agglomerated tartary buckwheat powder and the low pressure in the stirring kettle 1, so that the degreasing efficiency is accelerated.

After the tartary buckwheat powder is degreased, liquid petroleum ether is pumped to the evaporation separation cylinder 4 through the lower oil pump 41, the vacuum pipe 16 pumps the petroleum ether steam in the stirring kettle 1 under the action of the air pump, and meanwhile, the stirring shaft 13 stirs the tartary buckwheat powder until the petroleum ether is removed.

Adjusting pH value of the degreased tartary buckwheat powder to 8-11, adjusting temperature in a stirring kettle 1 to 55-65 ℃ through a heat preservation jacket 11, adding alkaline protease, stirring and performing enzymolysis, wherein the enzyme amount is 0.01-0.05% of the weight of the degreased tartary buckwheat, and performing enzymolysis for 3-7 h;

after the enzymolysis is finished, taking out the mixture in the stirring kettle 1, centrifuging for 10min in a 4000r/min centrifuge, taking the supernatant for later use, adding S-8 macroporous adsorption resin with the volume of 1/2, decoloring for 4 hours on a shaking table, and leaving the supernatant for later use;

adjusting the pH value of the supernatant to 6-8, injecting the supernatant into a stirring kettle 1, adjusting the temperature in the stirring kettle 1 to 45-65 ℃ through a heat-preservation jacket 11, adding papain, stirring and performing enzymolysis, wherein the enzyme amount is 0.01% -0.05% of the weight of the degreased tartary buckwheat, and performing enzymolysis for 3-7 h; and after the enzymolysis is finished, centrifuging in a 4000r/min centrifuge for 10min, and freeze-drying the obtained supernatant to obtain the tartary buckwheat active peptide finished product.

In one embodiment, the lower end surface of the support ring 22 and the upper end surface of the support convex ring 17 are coated with an edible silica gel layer, so that the support ring 22 and the support convex ring 17 are sealed when they are pressed against each other, and the tartary buckwheat powder is prevented from falling into the cavity between the filter bag 2 and the stirring kettle 1.

In one embodiment, the tartary buckwheat flour is sieved through a 40-80 mesh sieve before being added into the stirring kettle 1.

In the embodiment shown in fig. 1 and 2, the circulating feed pipe 3 is provided with a discharge pipe 32 at a position between the feed pump 31 and the feed valve 33.

The extraction method and the special device of the tartary buckwheat active peptide have reasonable structure, the special device comprises a centrifugal machine, a shaking table and a stirring kettle, the tartary buckwheat powder is degreased, then an enzyme method is adopted to extract tartary buckwheat protein extracting solution from the degreased tartary buckwheat powder, the extracting solution is centrifuged to take supernatant fluid to be decolored by the shaking table, the supernatant fluid is subjected to enzymolysis and freeze drying again, and the tartary buckwheat active peptide dry powder finished product is prepared; in the degreasing process of the tartary buckwheat, the tartary buckwheat powder is loaded in a filter bag and stirred, meanwhile, petroleum ether is injected into a stirring kettle to soak the tartary buckwheat powder, and fat in the tartary buckwheat powder is dissolved in the petroleum ether by utilizing the characteristic of similar intermiscibility, so that the degreasing purpose is achieved; petroleum ether is pumped into an evaporation separation cylinder by a lower oil pump to be heated, so that the petroleum ether is evaporated and separated from the tartary buckwheat grease, petroleum ether steam enters a condensation storage cylinder to be condensed into liquid state again and is pumped into a stirring kettle to participate in degreasing, thereby forming the cyclic utilization of the petroleum ether and reducing the outward discharge of the petroleum ether; in the degreasing process, the tartary buckwheat powder is pumped by a feeding pump and is conveyed into a spray head to be pressurized, and then is sprayed out by the spray head, meanwhile, an external air pump vacuumizes the stirring kettle through a vacuum tube, when the tartary buckwheat powder is sprayed out by the spray head, the internal air pressure of the agglomerated tartary buckwheat powder is higher than the inner cavity of the stirring kettle, so that the agglomerated tartary buckwheat powder is exploded, and the degreasing is accelerated; has the advantages of reasonable structure, convenient use and the like, and effectively solves the problem that the prior tartary buckwheat production process and equipment are backward.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.