阅读说明：本技术 一种高香气、高营养芝麻油的冷榨方法 (Cold pressing method of sesame oil with high fragrance and high nutrition ) 是由 韩跃军 邹建 连伟帅 许美娟 任鹏 杨佩瑜 马永生 王源 张煌 于 2019-11-22 设计创作，主要内容包括：本发明属于粮食加工磨具领域,尤其涉及一种高香气、高营养芝麻油的冷榨方法,于0.3-0.75 MPa且65-75℃环境下,将芝麻置置于碾磨装置碾磨,将碾磨后产物静置后取液相即得所述芝麻油。本发明结构简单,对传统的石磨结构进行改进,配合真空环境对芝麻进行冷榨,使得制备的芝麻油油率高、香气饱满、营养物含量高。(The invention belongs to the field of grain processing grinding tools, and particularly relates to a cold pressing method of sesame oil with high fragrance and high nutrition. The sesame seed oil mill is simple in structure, improves the traditional stone mill structure, and is matched with a vacuum environment to carry out cold pressing on sesame seeds, so that the prepared sesame seed oil is high in oil rate, full in fragrance and high in nutrient content.)

1. A cold pressing method of sesame oil with high fragrance and high nutrition is characterized in that sesame is placed in a grinding device to be ground under the environment of 0.3-0.75 MPa and 65-75 ℃, and the sesame oil is obtained after a ground product is stood and a liquid phase is taken.

2. The cold pressing method of high-aroma high-nutrition sesame oil according to claim 1, wherein, the device comprises an upper millstone, a lower millstone and an oil receiving platform which are arranged from top to bottom and form a stone mill, wherein the oil receiving platform of the stone mill is fixedly arranged on a base at the bottom in a vacuum box, a material collecting barrel is arranged below an outlet of the oil receiving platform, the vacuum box is provided with sealing doors at the box wall and the top close to the material collecting barrel, a raw material barrel is arranged at the top in the vacuum box, a motor is positioned above the upper millstone, an output shaft is coaxially connected with the top of an upper millboard, former bottom of the bucket surface both sides erect respectively on the support that sets up in the vacuum chamber top both sides, and former bottom of the bucket middle part is interior concavity and is equipped with the motor cabinet that is used for connecting the motor, and the output shaft of motor articulates there is the connecting rod, and the connecting rod both ends articulate respectively and scrape flitch and arrange the material pipe, arrange material pipe one end and connect the unloading hole of abrasive disc, the other end intercommunication former storage bucket and with former storage bucket normal running fit.

3. The method for cold pressing sesame oil with high fragrance and high nutrition as claimed in claim 2, wherein the bottom surface of the raw material barrel is provided with an annular gap and is connected with an annular bottom plate for blocking the annular gap through a first bearing and a second bearing, the annular bottom plate is provided with a through hole provided with silica gel at a hole wall, and a discharge pipe passes through the through hole and is communicated with the raw material barrel and the discharge hole.

4. The method for cold pressing sesame oil with high fragrance and high nutrition as claimed in claim 3, wherein the discharging tube is composed of a hard tube, a first elbow tube, a flexible tube and a second elbow tube which are sequentially and integrally connected from top to bottom, the second elbow tube is connected with the discharging hole, one end of the hard tube extends into the raw material barrel, the other end of the hard tube is fixedly sleeved with a sleeve, the wall of the sleeve is hinged with the end of the connecting rod, a plurality of support rods are vertically arranged on the annular bottom plate at the periphery of the through hole, the tops of the support rods are connected with the wall of a closed material barrel with an opening at the bottom, and the closed material barrel and the hard tube are.

5. The cold pressing method of sesame oil with high fragrance and high nutrition as claimed in claim 2, wherein the scraping plate comprises a silica gel plate in interference fit with a gap between the lower grinding disc and the oil receiving table, a metal plate is arranged on the top of the silica gel plate and hinged with the bottom of the transmission rod, and the top of the transmission rod is hinged with one end of the connecting rod; and the connecting rod middle section pin shaft is hinged on an installation cylinder fixedly sleeved on the outer wall of the motor output shaft.

6. The cold pressing method of sesame oil with high fragrance and high nutrition as claimed in claim 2, wherein an electric cylinder is further fixedly arranged on the top surface of the upper grinding disc, the output end of the electric cylinder is hinged with the connecting rod through a coupling, a heat exchanger and an exhaust fan are further arranged in the vacuum box, the heat exchanger is connected with an external hot water source through a water inlet pipe and a water outlet pipe, the exhaust fan is arranged at the top of the vacuum box, an air inlet of the exhaust fan is located in the vacuum box, and an air outlet of the exhaust fan is located outside the vacuum box.

7. The cold pressing method of sesame oil with high fragrance and high nutrition as claimed in claim 2, characterized in that sesame in a raw material barrel is guided into a blanking hole of an upper grinding disc in a vacuum box with 0.75MPa and 75 ℃, the rotating speed of the upper grinding disc is kept at 35r/min, the sesame is rolled by the upper and lower grinding discs, the rolled product enters a collecting barrel, and the sesame oil is obtained by taking liquid phase after standing.

8. The cold pressing method of sesame oil with high fragrance and high nutrition as claimed in claim 2, characterized in that sesame in a raw material barrel is guided into a blanking hole of an upper grinding disc in a vacuum box with 0.6 MPa and 75 ℃, the rotating speed of the upper grinding disc is kept at 35r/min, the sesame is rolled by the upper and lower grinding discs, the rolled product enters a collecting barrel, and the sesame oil is obtained by taking liquid phase after standing.

9. The cold pressing method of sesame oil with high fragrance and high nutrition as claimed in claim 2, characterized in that sesame in a raw material barrel is guided into a blanking hole of an upper grinding disc in a vacuum box with 0.45 MPa and 75 ℃, the rotating speed of the upper grinding disc is kept at 35r/min, the sesame is rolled by the upper and lower grinding discs, the rolled product enters a collecting barrel, and the sesame oil is obtained by taking liquid phase after standing.

10. The cold pressing method of sesame oil with high fragrance and high nutrition as claimed in claim 2, characterized in that sesame in a raw material barrel is guided into a blanking hole of an upper grinding disc in a vacuum box with 0.3MPa and 75 ℃, the rotating speed of the upper grinding disc is kept at 35r/min, the sesame is rolled by the upper and lower grinding discs, the rolled product enters a collecting barrel, and the sesame oil is obtained by taking liquid phase after standing.

Technical Field

The invention belongs to the field of grain processing, and particularly relates to a cold pressing method of sesame oil with high fragrance and high nutrition.

Background

The sesame can be directly eaten and can also be used as oil. The oil content of sesame seeds is generally more than 50%, the processing oil yield is about 45%, the content of unsaturated fatty acid in sesame oil is up to 84%, the content of oleic acid and linoleic acid is more than 39%, the content of tocopherol is more than 430 microgram/g, meanwhile, the sesame oil has the function of increasing the activity of 2BS (human embryo lung diploid fibroblast) cells, 2BS is closely related to the aging of a human body, the aging of the body can be effectively delayed by eating the sesame oil, and meanwhile, the sesame oil contains sesame phenol antioxidant substances, so that the sesame oil is storage-resistant and is not easy to deteriorate.

The traditional sesame oil processing technology comprises a water substitution method, a hot pressing method, a leaching method, an aqueous enzymatic method, a subcritical extraction method, a supercritical CO2 method and the like, but the methods have the defects of low yield, incapability of continuous operation (such as the water substitution method), great damage to nutritional value, reduction of sesame oil functionality (such as the hot pressing method), solvent residue (such as the leaching method), great damage to sesame oil flavor (such as the aqueous enzymatic method), large equipment investment, low productivity, blockage and corrosion of equipment (such as the subcritical extraction method), or extremely high production cost and difficulty in industrial application (such as the supercritical CO2 method). The cold pressing oil-making technology is a technology for extruding grease from pressed materials by means of mechanical external force at the temperature lower than 85 ℃, because the pressed materials are not subjected to the conventional steaming or baking process, grease particles in the pressed materials are still distributed in undeformed protein cells of the pressed materials in a dispersed state, so that the quality and the nutritional value of the grease prepared by the cold pressing technology are higher, and the cold pressing technology is paid attention to the industry in grease production. However, the cold pressing technology has some disadvantages, such as low oil yield, high oil fragrance loss and the like, which limit the application of the cold pressing technology in sesame oil.

The electric stone mill in the prior art is relatively complex in structure, a motor is mostly adopted to drive a lower grinding disc and keep an upper grinding disc fixed, so that the upper grinding disc and the lower grinding disc are connected by a shaft inevitably, and oil accumulation at a shaft lever is easily caused; meanwhile, sesame oil and residues can remain on the curved side wall of the lower grinding disc in the down-flow process.

Disclosure of Invention

The invention aims to provide a cold pressing method of sesame oil with high fragrance and high nutrition.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a cold pressing method of sesame oil with high fragrance and high nutrition comprises grinding sesame in a grinding device under 0.3-0.75 MPa and 65-75 deg.C, standing the ground product, and collecting liquid phase to obtain the sesame oil.

Preferably, the device is including setting up and constituteing the runner stone mill from top to bottom, lower mill and connecing oily platform, the oily platform that connects of runner stone mill sets firmly on the base of bottom in the vacuum chamber, connects the export below of oily platform to be equipped with the storage bucket, and the vacuum chamber all is equipped with the sealing door in the tank wall and the top that are close to the storage bucket, and the vacuum chamber internal top is equipped with former storage bucket, and the motor is located runner stone top and output shaft and last grinding plate top coaxial coupling, erect respectively on the support that sets up in vacuum chamber internal top both sides raw material barrel bottom surface both sides, and former storage bucket bottom middle-section department is interior concavity and is equipped with the motor cabinet that is used for connecting the motor, and the output shaft of motor articulates there is the connecting rod, and articulated flitch and row's material pipe are scraped respectively at the connecting rod both ends, and arrange material pipe one end and.

Preferably, the annular gap is opened to the raw materials bucket bottom surface and is connected with the annular bottom plate that is used for shutoff annular gap through first, second bearing, sets up the through-hole that pore wall department was equipped with silica gel on the annular bottom plate, arranges the material pipe and passes through the through-hole and feed through raw materials bucket and unloading hole.

Preferably, arrange the material pipe and from top to bottom by hard tube, first elbow pipe, flexible pipe and second elbow pipe in order an organic whole connection and constitute, the unloading hole is connected to the second elbow pipe, and hard tube one end is stretched into former storage bucket, the fixed cover of the other end and is equipped with the sleeve, and sleeve section of thick bamboo wall is articulated with the connecting rod tip, be equipped with several spinal branch poles perpendicularly in the through-hole periphery on the annular bottom plate, the branch top is connected with the open feed cylinder section of thick bamboo wall that closes in bottom, closes feed cylinder and the coaxial setting of hard tube.

Preferably, the scraping plate comprises a silica gel plate in interference fit with a gap between the lower grinding disc and the oil receiving table, a metal plate is arranged at the top of the silica gel plate and is hinged with the bottom of the transmission rod, and the top of the transmission rod is hinged with one end of the connecting rod; and the connecting rod middle section pin shaft is hinged on an installation cylinder fixedly sleeved on the outer wall of the motor output shaft.

Preferably, the top surface of the upper grinding disc is fixedly provided with an electric cylinder, the output end of the electric cylinder is hinged with the connecting rod through a coupler, a heat exchanger and an exhaust fan are further arranged in the vacuum box, the heat exchanger is connected with an external hot water source through a water inlet pipe and a water outlet pipe, the exhaust fan is arranged at the top of the vacuum box, an air inlet of the exhaust fan is located in the vacuum box, and an air outlet of the exhaust fan is located outside the vacuum box.

Preferably, sesame in the raw material barrel is guided into a blanking hole of an upper grinding disc in a vacuum box with the pressure of 0.75MPa and the temperature of 75 ℃, the rotating speed of the upper grinding disc is kept at 35r/min, the sesame is ground by the upper grinding disc and the lower grinding disc, a ground product enters a collecting barrel, and the sesame oil is obtained after standing and taking a liquid phase.

Preferably, sesame in the raw material barrel is guided into a blanking hole of an upper grinding disc in a vacuum box with the pressure of 0.6 MPa and the temperature of 75 ℃, the rotating speed of the upper grinding disc is kept at 35r/min, the sesame is ground by the upper grinding disc and the lower grinding disc, a ground product enters a collecting barrel, and the sesame oil is obtained after standing and taking a liquid phase.

Preferably, sesame in the raw material barrel is guided into a blanking hole of an upper grinding disc in a vacuum box with the pressure of 0.45 MPa and the temperature of 75 ℃, the rotating speed of the upper grinding disc is kept at 35r/min, the sesame is ground by the upper grinding disc and the lower grinding disc, a ground product enters a collecting barrel, and the sesame oil is obtained after standing and taking a liquid phase.

Preferably, sesame in the raw material barrel is guided into a blanking hole of an upper grinding disc in a vacuum box with the pressure of 0.3MPa and the temperature of 75 ℃, the rotating speed of the upper grinding disc is kept at 35r/min, the sesame is ground by the upper grinding disc and the lower grinding disc, a ground product enters a collecting barrel, and the sesame oil is obtained after standing and taking a liquid phase.

The working process of preparing the sesame oil with high fragrance and high nutrition by the milling device is as follows:

firstly, opening a sealing door, adding sesame to be pressed into a raw material barrel, then closing the sealing door, opening a heat exchanger and an exhaust fan, pumping air in a vacuum box to the outside by the exhaust fan to enable the pressure in the vacuum box to be 0.3-0.75 MPa, enabling hot water to circularly flow through a water inlet pipe and a water outlet pipe by the heat exchanger, enabling the temperature in the vacuum box to be 65-75 ℃, and specifically enabling the pressure and the temperature in the vacuum box to be respectively displayed and monitored by a barometer and a thermometer.

Then the output of control electric jar removes, so that the one end of the articulated transfer line of connecting rod is located the top, the one end of articulated sheathed tube is located the below, the silica gel plate of scraping the flitch at this moment shifts out the clearance of connecing oil platform and lower mill, and the hard tube of arranging the material pipe shifts out the cladding scope of closing the feed cylinder and the tip remains in raw materials barrel, then keep this state of electric jar, open the motor, the motor drives the installation section of thick bamboo, the connecting rod, scrape the flitch, arrange the material pipe and go up mill simultaneous circumferential direction, the installation section of thick bamboo, the connecting rod, scrape the flitch, it does not have relative motion to arrange between material pipe and the go up the mill, but the hard tube can drive annular bottom plate and first bearing inner race body and second bearing outer race body and rotate, thereby must arrange the.

In the process, sesame in the raw material barrel enters the hard tube from a gap between the adjacent supporting rods, then enters the space between the upper millstone and the lower millstone through the first elbow tube, the telescopic tube, the second elbow tube and the blanking hole of the upper millstone, and after the upper millstone and the lower millstone are milled, crushed sesame slag and sesame oil move out from the grinding teeth of the upper millstone and the lower millstone, flow into the oil receiving platform along the outer wall of the lower millstone, and finally flow into the collecting barrel from the outlet of the oil receiving platform to be collected.

After the operation is carried out for a certain time, if the sesame in the raw material barrel is used up or the motor needs to be stopped for rest, the output end of the electric cylinder is controlled to move reversely, so that one end of the connecting rod hinged transmission rod is positioned below, one end of the hinged sleeve is positioned above, the hard tube of the discharging tube moves upwards and enters the coating range of the closed material barrel, the top of the closed material barrel is closed, so that no sesame exists in the closed material barrel, the sesame in the raw material barrel cannot enter the hard tube at the moment, the discharging treatment is stopped, and no sesame oil and residue are discharged between the upper grinding disc and the lower grinding disc; meanwhile, the silica gel plate of the scraping plate enters a gap between the oil receiving table and the lower grinding disc, scrapes residues and oil on the outer wall of the lower grinding disc along with the rotation of the motor, and finally flows into the oil receiving table under the action of self weight.

The working personnel can open the sealing door according to the requirement, collect the sesame oil and the sesame residue in the collecting barrel, and take the liquid phase after standing to obtain the sesame oil.

Compared with the prior art, the invention has the following advantages:

1) the invention has simple structure, improves the traditional stone mill structure, adopts the motor to drive the upper millstone, reduces the upper millstone, the lower millstone and connecting components between the lower millstone and the oil receiving platform, prevents oil accumulation, slag deposit and oil leakage caused by unnecessary gaps, and creatively designs the overall structure layout of the discharge pipe and the scraping plate to reduce the complexity of the driving mechanism and the overall structure as much as possible.

2) The creative discovery of the invention is that through the matching of a new stone mill structure, negative pressure and a low-temperature environment, the oil yield of sesame oil is up to 49.5%, the content of 2, 5-dimethyl pyrazine in the main aroma component of the prepared sesame oil is up to 7.55mg/L, the content of 2, 6-dimethyl pyrazine is up to 7.56mg/L, the activity of the sesame oil extract on 2BS is up to 24.75%, and meanwhile, the content of gamma-tocopherol is up to 485.3 mug/g, so that the prepared sesame oil has high oil yield, full aroma, high nutrient content, good functionality and higher market application value.

Drawings

FIG. 1 is a schematic view of a milling apparatus according to one embodiment in a closed state;

fig. 2 is a schematic structural diagram of the grinding device in a blanking state according to an embodiment.

Detailed Description

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

As shown in fig. 1-2, a device of milling, including the last mill 61, lower mill 62 and the oily platform 63 that connect that set up and constitute the stone mill from top to bottom, the oily platform 63 that connects of stone mill sets firmly on the base 11 of bottom in vacuum box 1, the export below that connects oily platform 63 is equipped with the storage bucket 12, vacuum box 1 all is equipped with sealing door 13 in the tank wall and the top that are close to storage bucket 12, top both sides are equipped with support 14 in the vacuum box 1, 2 bottom surfaces of raw materials bucket both sides erect respectively on support 14, motor 3 is located the top of last mill 61 and output shaft and last mill board 61 top coaxial coupling, 2 middle segments of bottom of raw materials bucket are interior concavity and are equipped with the motor cabinet that is used for connecting motor 3. Still be equipped with heat exchanger 15 and air exhauster 16 in the vacuum chamber 1, heat exchanger 15 is connected with external hot water source through advancing, outlet pipe, and air exhauster 16 sets up in vacuum chamber 1 top and the air intake of air exhauster 16 is located the vacuum chamber, and the air exit is located the vacuum chamber outside.

An installation cylinder 32 is fixedly sleeved outside an output shaft 31 of the motor 3, and the installation cylinder 32 is hinged with the middle section of the connecting rod 33; the scraping plate comprises a silica gel plate 43 in interference fit with a gap between the lower grinding disc and the oil receiving table, the top of the silica gel plate 43 is provided with a metal plate 42, the metal plate 42 is hinged with the bottom of the transmission rod 41, and the top of the transmission rod 41 is hinged with one end of the connecting rod 33;

the bottom surface of the raw material barrel 2 is provided with an annular gap and is connected with an annular bottom plate 23 used for plugging the annular gap through a first bearing 21 and a second bearing 22, and the annular bottom plate 23 is provided with a through hole provided with a silica gel 24 at the hole wall; a plurality of supporting rods 25 are vertically arranged on the periphery of the through hole on the annular bottom plate 23, the tops of the supporting rods 25 are connected with the wall of a closed charging barrel 26 with an opening at the bottom, and the closed charging barrel 26 is coaxially arranged with the hard tube 51. The top surface of the upper grinding disc 61 is also fixedly provided with an electric cylinder 34, and the output end of the electric cylinder 34 is hinged with the connecting rod 33 through a coupling (not shown in the figure).

The discharging pipe is formed by sequentially and integrally connecting a hard pipe 51, a first elbow pipe 52, an extension pipe 53 and a second elbow pipe 54 from top to bottom, the second elbow pipe 54 is connected with a discharging hole 64 on an upper grinding disc 61, one end of the hard pipe 51 penetrates through a through hole on the annular bottom plate 23 and then extends into the raw material barrel 2, the other end of the hard pipe is fixedly sleeved with a sleeve 55, and the barrel wall of the sleeve 55 is hinged with the other end of the connecting rod 33.

The working process of preparing the sesame oil with high fragrance and high nutrition by the milling device is as follows:

firstly, opening a sealing door, adding sesame to be pressed into a raw material barrel, then closing the sealing door, opening a heat exchanger and an exhaust fan, pumping air in a vacuum box to the outside by the exhaust fan to enable the pressure in the vacuum box to be 0.3-0.75 MPa, enabling hot water to circularly flow through a water inlet pipe and a water outlet pipe by the heat exchanger, enabling the temperature in the vacuum box to be 65-75 ℃, and specifically enabling the pressure and the temperature in the vacuum box to be respectively displayed and monitored by a barometer and a thermometer.

Then the output end of the electric cylinder is controlled to move, so that one end of the connecting rod hinged transmission rod is located above, one end of the hinged sleeve is located below, the silica gel plate of the scraping plate is moved out of a gap between the oil receiving platform and the lower grinding disc, the hard tube of the discharging pipe is moved out of a covering range of the closed material cylinder, and the end portion of the hard tube is left in the raw material barrel, then the state of the electric cylinder is maintained, the motor is started, the motor drives the installation cylinder, the connecting rod, the scraping plate, the discharging pipe and the upper grinding disc to rotate circumferentially at the same time, no relative motion exists between the installation cylinder, the connecting rod, the scraping plate, the discharging pipe and the upper grinding disc, but the hard tube can drive the annular bottom plate, the first bearing inner ring body and the second bearing outer ring body to rotate, and therefore the influence.

In the process, sesame in the raw material barrel enters the hard tube from a gap between the adjacent supporting rods, then enters the space between the upper millstone and the lower millstone through the first elbow tube, the telescopic tube, the second elbow tube and the blanking hole of the upper millstone, and after the upper millstone and the lower millstone are milled, crushed sesame slag and sesame oil move out from the grinding teeth of the upper millstone and the lower millstone, flow into the oil receiving platform along the outer wall of the lower millstone, and finally flow into the collecting barrel from the outlet of the oil receiving platform to be collected.

After the operation is carried out for a certain time, if the sesame in the raw material barrel is used up or the motor needs to be stopped for rest, the output end of the electric cylinder is controlled to move reversely, so that one end of the connecting rod hinged transmission rod is positioned below, one end of the hinged sleeve is positioned above, the hard tube of the discharging tube moves upwards and enters the coating range of the closed material barrel, the top of the closed material barrel is closed, so that no sesame exists in the closed material barrel, the sesame in the raw material barrel cannot enter the hard tube at the moment, the discharging treatment is stopped, and no sesame oil and residue are discharged between the upper grinding disc and the lower grinding disc; meanwhile, the silica gel plate of the scraping plate enters a gap between the oil receiving table and the lower grinding disc, scrapes residues and oil on the outer wall of the lower grinding disc along with the rotation of the motor, and finally flows into the oil receiving table under the action of self weight, as shown in fig. 1.

The working personnel can open the sealing door according to the requirement, collect the sesame oil and the sesame residue in the collecting barrel, and take the liquid phase after standing to obtain the sesame oil.

The weight of the stone mill is 100kg, the diameter is 0.60m, the thickness is 0.18m, and the cold pressing method for preparing the sesame oil with high fragrance and high nutrition by adopting the milling device comprises the following specific steps: