CN111034895A - Multi-site shapeable pulse electric field processing device and method - Google Patents
Multi-site shapeable pulse electric field processing device and method Download PDFInfo
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Abstract
本发明公开一种多位点可塑形脉冲电场处理装置及方法；该装置的上层隔板和物料盛放器上下间隔设置，多个活塞式可移动压杆均匀穿过上层隔板，位于物料盛放器上；每个活塞式可移动压杆下端连接上极板，上端向上活动穿个上层隔板和红外感应档板与上接头连接，红外感应档板设置在上层隔板的上端，上接头与红外感应档板活动连接；上接头与红外感应档板分别与上极板脉冲电源线和信号线连接；上极板脉冲电源线连接电源信号转接器，脉冲电源的高压端连接着电源信号转接器；电源信号转接器与计算机连接；该装置对不同形状的食品物料进行干燥或提取预处理，可以更好的贴合物料轮廓、提高处理效果，并且装置简单易拆卸、处理量能实现工业化放大。
The invention discloses a multi-site plastic pulse electric field processing device and method; the upper partition of the device and the material container are arranged at intervals up and down, and a plurality of piston-type movable pressing rods pass through the upper partition evenly, and are located in the material container. The lower end of each piston-type movable pressure rod is connected to the upper plate, and the upper end moves upward through an upper partition and an infrared sensing baffle to connect with the upper connector. The infrared sensing baffle is arranged on the upper end of the upper partition, and the upper connector It is movably connected with the infrared induction baffle; the upper connector and the infrared induction baffle are respectively connected with the pulse power line and the signal line of the upper plate; the pulse power line of the upper plate is connected with the power signal adapter, and the high voltage end of the pulse power is connected with the power signal Adapter; the power signal adapter is connected to the computer; the device dries or extracts food materials of different shapes, which can better fit the outline of the material and improve the processing effect, and the device is simple and easy to disassemble, and the processing capacity is high Achieving industrial scale up.
Description
Technical Field
The invention relates to a pulse electric field, in particular to a multi-site shapeable pulse electric field processing device and a method.
Background
The pulse electric field technology is a novel non-thermal food processing technology, and liquid and semisolid food is processed by using higher electric field intensity (10-50kV/cm), shorter pulse width (0-100 mu s) and higher pulse frequency (0-2000Hz) so as to achieve the purpose of killing food microorganisms. In recent years, the technology is greatly valued and widely researched by researchers, and besides being applied to sterilization operation at first, the technology also applies the pulse electric field technology to researches such as intensified drying and intensified extraction of plant solid materials.
The pulse electric field is used as a pretreatment mode, and has incomparable advantages compared with other methods: high efficiency, low energy consumption, no pollution, little damage of active ingredients and the like, and can be used for a pretreatment mode before dried preserved fruit or a pretreatment mode before extraction operation and the like.
Meanwhile, the principle of the pulsed electric field for pretreating plant solid food is basically clear, and when plants are subjected to the action of a pulsed electric field with certain strength, instantaneous potential difference can be generated inside and outside cells, so that the plant cells are broken, holes are generated, the tissue structure of the plant cells is loosened, and the mass and heat transfer efficiency of materials is improved.
At present, the food pretreatment device by the pulse electric field mainly adopts a single flat plate type. Chinese utility model patent 201621208737.3 discloses a high-voltage pulse electric field processing apparatus of distance between adjustable polar plate, it includes inside hollow process chamber, be provided with pulse mechanism and lower pulse mechanism in the process chamber, the device passes through structural change, can adjust the distance between the polar plate, and the adjustment back is fixed firm, guarantees the requirement of disinfecting of different food. Chinese utility model patent 201320462328.6 discloses a high-voltage pulse electric field treatment chamber for processing before fruit vegetables osmotic dehydration, this treatment chamber forms pulse electric field in the air domain, directly handles the fruit vegetables, lets in the hot-air simultaneously, improves the temperature in the insulating cavity, effectively promotes pulse electric field to the destructive action of cell membrane, improves treatment effeciency. PCT patent application WO 2016/008868A 1 discloses a low field strength, closed, parallel plate, pulsed electric field cooking chamber of 10-180V/cm, characterized by a uniform electric field in a liquid environment between two parallel plates. In summary, the existing pulsed electric field processing chamber has the following problems:
1. most of the existing treatment chambers are single flat plates, two polar plates can only be fixed at equal intervals and cannot be better attached to materials according to the shapes of the materials, and the matrix effect is not applied;
2. the existing treatment chamber has high tightness, bubbles can be generated in the pulse electric field treatment process, the bubbles are not easy to discharge, the treatment effect is influenced, and meanwhile, the safety problems of breakdown, explosion and the like also exist.
3. The current processing device has small processing capacity, is only suitable for research and use in a laboratory, has low industrial application degree, and can not adjust parameters such as field intensity, pulse width and the like.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the multi-point shapeable pulse electric field processing device, which is used for drying or extracting and preprocessing food materials with different shapes, can better fit the material outline and improve the processing effect, and is simple and easy to disassemble, and the processing capacity can be enlarged industrially.
The invention also provides a multi-site shapeable pulsed electric field processing method using the above device.
The purpose of the invention is realized by the following technical scheme:
a multi-site plastic pulse electric field processing device comprises a piston type movable compression bar, an upper polar plate, an upper joint, an infrared induction baffle plate, a lower polar plate extension pipe, an upper polar plate pulse power line, a signal line, a lower polar plate pulse power zero line, an upper layer baffle plate, a material container, a power supply signal adapter and a computer; the upper-layer partition plate and the material container are arranged at intervals up and down, and the plurality of piston-type movable pressure rods uniformly penetrate through the upper-layer partition plate and are positioned on the material container; the lower end of each piston type movable pressure rod is connected with an upper electrode plate, the upper end of each piston type movable pressure rod upwards movably penetrates through an upper-layer partition plate and an infrared induction baffle plate to be connected with an upper connector, the infrared induction baffle plate is arranged at the upper end of the upper-layer partition plate, and the upper connector is movably connected with the infrared induction baffle plate; the upper connector and the infrared induction baffle are respectively connected with the upper polar plate pulse power line and the signal line; the upper polar plate pulse power line is connected with the power supply signal adapter, and the high-voltage end of the pulse power supply is connected with the power supply signal adapter; the power supply signal adapter is connected with the computer; the lower end of the lower polar plate is hermetically connected with the material container, and the material is placed on the material container and positioned between the upper polar plate and the upper end of the lower polar plate; the lower polar plate is connected with a zero line of a pulse power supply of the lower polar plate through a lower polar plate extension tube.
In order to further achieve the purpose of the invention, preferably, the lower end of the lower polar plate is hermetically connected with the material container in a manner that a silica gel gasket is added between the lower end of the lower polar plate and the material container, and the lower part of the lower polar plate is tightly pressed on the material container by a screw.
Preferably, the multi-site shapeable vein further comprises an upper shell of the electric field treatment device; the upper shell is arranged at the upper end of the material container and is positioned at the lower end of the upper layer clapboard, and the upper end of the piston type movable pressure lever firstly penetrates through the upper shell and then penetrates through the upper layer clapboard.
Preferably, the upper layer clapboard is in a circular, triangular, rectangular, pentagonal or hexagonal flat plate structure.
Preferably, the material container is a circular, triangular, rectangular, pentagonal or hexagonal flat plate structure.
Preferably, the material container is a cylindrical structure with a cavity, such as a circle, a triangle, a rectangle, a pentagon or a hexagon.
Preferably, the material containing chambers are arranged on the conveying belt, the piston type movable pressing rod is fixed above the conveying belt, and the material containing chambers are fixed on the conveying belt.
Preferably, the upper polar plate and the lower polar plate are circular; the material of the material container is preferably organic glass; the material is a solid material or a solid material immersed in liquid; the power signal adapter adopts an RS-422/485 multi-serial port communication module.
Preferably, the multi-site shapeable pulsed electric field processing device further comprises a wire harness and a joint; the wire bundling device is arranged on the upper-layer shell, a round gap is formed in the upper-layer shell, and the wire bundling device is fixed in the gap for one circle; the connector is a component for binding the upper polar plate pulse power transmission line and the induction baffle signal line.
The pulse electric field of the invention is a uniform electric field, a unipolar flat square wave, the output voltage is 0-30kV, and the adjustable pulse width is 0-80 mus. The multi-site shapeable pulsed electric field processing device can be used as a static processing equipment chamber and can also be used on a conveyor belt as a dynamic processing chamber.
A method for processing materials by using the multi-site shapeable pulsed electric field processing device comprises the following steps:
step 1: placing the materials in a material container, and injecting clear water into the treatment chamber until the water level is 2-3cm higher than the materials; if the solid material is directly treated, the solid material is directly placed on the material container;
step 2: adjusting a piston type movable pressure lever to be deep below the water surface and attached to the surface of the material; if the solid material is directly treated, the piston type movable pressure lever is adjusted until the piston type movable pressure lever is attached to the surface of the material;
and step 3: connecting a pulse power line and a zero line of a lower polar plate pulse power supply to a high-voltage end and a grounding end of the pulse power supply respectively to form a closed circuit, controlling the pulse power supply to output a single-pole square wave, an adjustable pulse output voltage of 0-30kV and an adjustable pulse width of 0-80 mus by a computer, and regulating and controlling the output voltage of the pulse power supply by the computer end to obtain a proper processing field intensity;
and 4, step 4: after treatment, the piston type movable pressure lever is lifted, and the pulse electric field pretreatment sample is obtained.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1) the invention adopts a plurality of action sites, and simultaneously, the shape can be adjusted according to materials with different shapes, the processing size is changed, and the materials are better attached, so that the action of an electric field is more uniform.
2) The invention has the advantages that the multiple points function, the height difference exists between the polar plates on the same side, bubbles generated by treatment are conveniently discharged, and the risk of breakdown blasting is prevented.
3) The treatment device provided by the invention is easy to realize industrial amplification, and can meet the industrial requirements through reasonable design.
4) The pulse electric field is a processing mode of a pure physical field, does not need biological substances and chemical reagents, and is more green and safe.
5) The invention carries out drying or extraction pretreatment on food materials with different shapes, can better fit the material outline and improve the treatment effect, and has simple and easy disassembly device and capacity of realizing industrialized amplification.
Drawings
FIG. 1 is a schematic diagram of the connection relationship of the multi-site shapeable pulsed electric field processing apparatus of the present invention.
FIG. 2 is a schematic diagram of the overall structure of the multi-site shapeable pulsed electric field processing apparatus according to the present invention.
Fig. 3 is a schematic structural view of the material container (plane type) of the present invention.
Fig. 4 is a schematic structural view of the material container (cylindrical type) of the present invention.
Fig. 5 is a schematic structural diagram of a material container (cuboid) of the invention.
FIG. 6 is a graph of the drying rate of freshly cut black brin sheets of example 2.
The figures show that: the device comprises a piston type movable pressure lever 1, an upper pole plate 2, an upper joint 3, an infrared induction baffle plate 4, a lower pole plate 5, a lower pole plate extension pipe 6, an upper pole plate pulse power line 7, an induction baffle plate signal line 8, a joint 9, a lower pole plate pulse power zero line 10, an upper layer baffle plate 11, a material container 12, a material 13, a power signal adapter 14, a computer 15, an upper layer shell 16 and a wire bundling device 17.
Detailed Description
For a better understanding of the present invention, the following further description is given in conjunction with the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1, a multi-site shapeable pulsed electric field processing device comprises a piston type movable pressure lever 1, an upper polar plate 2, an upper joint 3, an infrared induction baffle 4, a lower polar plate 5, a lower polar plate extension pipe 6, an upper polar plate pulsed power line 7, a signal line 8, a lower polar plate pulsed power zero line 10, an upper layer baffle 11, a material container 12, a power signal adapter 14 and a computer 15; the upper layer clapboard 11 and the material container 12 are arranged at intervals up and down, and the plurality of piston type movable pressure bars 1 uniformly penetrate through the upper layer clapboard 11 and are positioned on the material container 12; the lower end of each piston type movable pressure rod 1 is connected with an upper electrode plate 2, the upper end of each piston type movable pressure rod upwards movably penetrates through an upper-layer partition plate 11 and an infrared induction baffle plate 4 to be connected with an upper connector 3, the infrared induction baffle plate 4 is arranged at the upper end of the upper-layer partition plate 11, and the upper connector 3 is movably connected with the infrared induction baffle plate 4; the upper joint 3 and the infrared induction baffle 4 are respectively connected with an upper polar plate pulse power line 7 and a signal line 8; the upper polar plate pulse power line 7 is connected with a power supply signal adapter 14, and the high-voltage end of the pulse power supply is connected with the power supply signal adapter 14; the power supply signal adapter 14 is connected with the computer 15; the lower end of the lower polar plate 5 is hermetically connected with a material container 12, and a material 13 is placed on the material container 12 and positioned between the upper polar plate 2 and the upper end of the lower polar plate 5; the lower polar plate 5 is connected with a zero line 10 of a pulse power supply of the lower polar plate through a lower polar plate extension tube 6. The material of the material container 5 is preferably organic glass.
Preferably, the lower end of the lower pole plate 5 is hermetically connected with the material container 12 in a manner that a silica gel gasket is added between the lower end of the lower pole plate 5 and the material container 12 for pressing, so as to prevent the material container from leaking water from a hole, and the silica gel gasket is added to ensure good tightness between the lower pole plate 5 made of a metal material and the material container 12 made of an organic glass material, so that the lower part of the lower pole plate 5 is tightly pressed on the material container 12 by a screw.
The upper polar plates 2 on different piston type movable pressure rods 1 have height difference, and in the process of pressing the surface of a material, the different piston type movable pressure rods 1 generate different processing heights due to the height difference of the material, and the height difference exists between the piston type movable pressure rods 1.
As shown in fig. 3, the material container 12 is a circular, triangular, rectangular, pentagonal or hexagonal plate structure; alternatively, as shown in fig. 4 and 5, the material container 12 is a cylindrical structure with a hollow cavity, such as a circle, a triangle, a rectangle, a pentagon or a hexagon; the material container 12 is used for supporting and containing solid materials, or is used for containing solid materials soaked in liquid through a cavity of the material container. The device can realize the amplification of the processing point positions of the equipment by increasing the number of the upper and lower polar plates, namely the amplification on the flat plate of the processing device; meanwhile, the material container 12 can be arranged on a conveyor belt to process the materials, and the materials are processed in a production line manner, so that the processing device is easy to realize industrial amplification; the material containing chambers are fixed on the conveying belt and move together with the conveying belt, and the material containing chambers are arranged under the piston type movable pressure lever 1 part to wait for the piston type movable pressure lever 1 part to be placed and processed and then are conveyed to the next processing link.
The upper shell 16 is arranged at the upper end of the material container 12 and is positioned at the lower end of the upper partition plate 11, and the upper end of the piston type movable pressure lever 1 firstly passes through the upper shell 16 and then passes through the upper partition plate 11. The upper housing 16 acts as a dust cover to prevent dust and dirt, and creates a dark room inside the material holder 12 to aid in the proper operation of the infrared sensor and to aid in the aesthetics of the overall device.
The cable tie 17 is arranged on the upper shell 16, namely the upper shell 16 is provided with a round gap, and the cable tie 17 is fixed in the gap for one circle; the purpose is to arrange a plurality of groups of circuits inside at the outlet, which is beneficial to the integral beauty of the equipment.
Preferably, the upper plate pulse power line 7 and the signal line 8 are combined at the joint 9; the connector 9 is connected to the power signal adapter 14. The connector 9 is a component binding the upper polar plate pulse power transmission line 7 and the induction baffle signal line 8, is convenient for accessing a circuit and is used for accessing a power signal adapter 14.
The upper layer clapboard 11 is in a circular, triangular, rectangular, pentagonal or hexagonal flat plate structure; the upper layer clapboard 11 can also be in other polygonal or irregular flat plate structures;
the upper plate 2 and the lower plate 5 are preferably circular.
The material 13 is a solid material or a solid material immersed in a liquid.
The power signal adapter 14 may be an RS-422/485 multi-serial communication module, which is an electronic component for converting analog signals into digital signals.
The piston type movable pressure lever 1 can be fixed by the upper layer clapboard 11 and can also be adjusted manually, and the piston type movable pressure lever can not be loosened too much and can also move freely.
The pulse power supply is from a group of independent pulse power supply generating devices, and the pulse power supply forms a loop by being respectively connected to a pulse power supply line 7 and a lower polar plate pulse power supply zero line 10.
When the upper connector 3 contacts the infrared induction baffle 4, signals of the upper and lower polar plates are not applied, and only when the upper connector is separated, signals are transmitted to the computer 15, namely when the upper and lower polar plates are contacted with each other without materials, pulse energy cannot be input to the circuit. The computer 15 of the invention is used for receiving the signal input by the infrared induction device, calculating the distance between every group of polar plates, and controlling the pulse energy input by every group of polar plates; the pulse waveform detection circuit is also used for adjusting parameters such as output voltage, frequency and processing times of the pulse power supply and detecting the condition of the pulse waveform between each group of polar plates.
The computer 15 can determine whether to give the high-voltage pulse to a certain polar plate circuit according to the induction signal, can also manually set the high-voltage pulse to control a certain polar plate, can also set various parameters (output voltage, frequency and processing times) and monitor the pulse waveform condition of each discharge polar plate in real time. The infrared sensing baffle 4 can measure the distance between the upper joint 3 and the upper joint by infrared rays, the distance is the height of the upper polar plate 2 raised by the solid material below, and the distance signal is transmitted to the power signal adapter 14 through the signal wire 8 and finally transmitted to the computer 15. The computer 15 is a computer digital control system, and realizes specific control purposes such as a data acquisition program, a control decision program, an output processing program, alarm processing and the like by using programmed software; specifically, parameters such as required field intensity, processing time, pulse width and the like are preset in the computer 15 manually, and basic data are provided for accurate control of the computer 15; in addition, the infrared induction baffle 4 is used for collecting distance signals of the upper polar plate 2 and the lower polar plate 5 and transmitting analog signals of the distance to the computer 15; through the received distance signals, the computer 15 can calculate the voltage required to be output according to a set program, and controls the size of pulse electricity applied to the lines through a pulse switch, so as to ensure that each line obtains enough energy, and thus the field intensity of each upper polar plate 2 is consistent with that of each lower polar plate 5; if the distance is zero, the computer 15 does not output pulsed electricity to this line.
When the material to be processed 13 is placed on the material container 12, when the material to be processed is used, some upper polar plates 2 are communicated with the piston type movable pressing rod 1 to move upwards, the upper connector 3 of the pulse power supply moves upwards for a certain distance, at the moment, the infrared induction baffle plate 4 is separated from the upper connector 3 and is transmitted to the power supply signal adapter 14 through the signal wire 8, the pulse power supply wire 7 of the upper polar plates and the zero line 10 of the pulse power supply of the lower polar plates are confirmed by the computer 15 connected with the upper connector, and then high-intensity pulses are received. At the end of the treatment, the connected computer 15 will disconnect the pulsed power supply and take out the treated material 13.
The multi-site shapeable pulse electric field processing device can realize the amplification of the processing site positions of the equipment by increasing the number of the upper and lower polar plates, namely the amplification on the flat plate of the processing device; the device can also be arranged on a conveyor belt to process materials, and the materials are processed in a production line manner.
A method for processing materials by using a multi-site shapeable pulsed electric field processing device comprises the following steps:
step 1: placing the materials in a material container, and injecting clear water into the treatment chamber until the water level is 2-3cm higher than the materials; if the solid material is directly treated, the solid material is directly placed on the material container;
step 2: adjusting the piston type movable pressure lever 1 to be deep below the water surface and attached to the surface of the material; if the solid material is directly treated, the piston type movable pressure lever 1 is adjusted until the surface of the material is jointed;
and step 3: connecting a pulse power supply line 7 and a lower polar plate pulse power supply zero line 10 to a high-voltage end and a grounding end of a pulse power supply respectively to form a closed circuit, controlling the pulse power supply to output a single-pole square wave, an adjustable pulse output voltage of 0-30kV and an adjustable pulse width of 0-80 mus through a computer, and regulating and controlling the output voltage of the pulse power supply through a computer terminal 15 to obtain a proper processing field intensity; specifically, parameters such as required field intensity, processing time, pulse width and the like are preset in the computer 15 manually, and basic data are provided for accurate control of the computer 15; in addition, the infrared induction baffle 4 is used for collecting distance signals of the upper polar plate 2 and the lower polar plate 5 and transmitting analog signals of the distance to the computer 15; through the received distance signals, the computer 15 can calculate the voltage required to be output according to a set program, and controls the size of pulse electricity applied to the lines through a pulse switch, so as to ensure that each line obtains enough energy, and thus the field intensity of each upper polar plate 2 is consistent with that of each lower polar plate 5; if the distance is zero, the computer 15 does not output pulsed electricity to this line.
And 4, step 4: after treatment, the piston type movable pressure lever 1 is lifted, and the pulse electric field pretreatment sample is obtained.
Example 1
This embodiment is extracted to the starch in the starch class material, uses the multiple spot plastic shape pulsed electric field processing apparatus to carry out the preliminary treatment to the material. Placing about 300g of oval sweet potatoes, which are similar in size and are Fujian sea sand and washed, in a material container 12, flatly paving a row of the sweet potatoes, adding clear water until the sweet potatoes reach 2cm, putting down a movable pressure bar 1, adhering to the surfaces of the sweet potatoes and tightly pressing, setting by a computer 15, wherein the average field strength is 3.0kV/cm, the pulse width is 20 microseconds, the pulse number is 30 times, then washing the processing group and the blank group by 5 times of volume, collecting starch by using a precipitation method, drying by using hot air at 80 ℃ to constant weight, weighing and recording to obtain the starch extraction amount of 16.54 +/-1.20 g per hundred g of sweet potatoes and the starch extraction amount of 10.61 +/-0.24 g per hundred g of sweet potatoes in the blank group. The extraction yield of the pulsed electric field treatment group was increased by 55.89% compared to the blank group. The results demonstrate that the pulsed electric field apparatus improves starch extraction by pre-treating the starch material.
Example 2
This embodiment is to carrying out dry preliminary treatment in the berry class material, uses the plastic shape pulse electric field processing apparatus of multiple-site to carry out the preliminary treatment to the material. The method comprises the steps of placing about 300g of clean round black cloth forest with similar size in a material container 12, laying the black cloth forest in a row, putting down a movable compression bar 1, directly attaching to the surface of the black cloth forest and compressing the black cloth forest, setting the black cloth forest to be 1.0kV/cm, 2.0kV/cm and 3.0kV/cm through a computer 15, cutting the black cloth forest into pieces with the diameter of 35mm and the height of 5mm by a knife after the black cloth forest is taken out, placing the black cloth forest in a hot air drying box for hot air drying at 70 ℃ at intervals of 30min, weighing and recording data, wherein the drying rate curve of the fresh-cut black cloth forest is shown in figure 6, and the drying rate of the black cloth forest is faster and faster along with the increase of the field intensity of a pulse electric field under the field intensity of 0-3.0 kV/cm. Compared with a blank group, the drying rate of the pulse electric field with the field intensity of 3kV/cm after being pretreated and dried for 120min is improved by 40.0 percent. Compared with the Chinese utility model patent 201320462328.6, the utility model discloses that the drying rate can be improved by 40% only by using 5kV/cm for 120min of the osmotic dehydration of the white radish by the high-voltage pulse electric field for the treatment before the osmotic dehydration of fruits and vegetables. The results demonstrate that the pulsed electric field pretreatment of pulp-like materials can accelerate the drying rate.
Example 3
In the embodiment, a multi-site shapeable pulsed electric field processing device is applied to the starch material to pretreat the material. Placing about 300g of clean elliptic potatoes with similar sizes in a material container 12, laying the potatoes in a row, adding clear water to submerge 2cm of all the potatoes, putting down a movable pressure rod 1, attaching the movable pressure rod to the surface of the sweet potatoes and compacting the potatoes, setting the movable pressure rod by a computer 15, setting the average field intensity to be 3.0kV/cm, the pulse width to be 80 microseconds, setting the number of pulses to be 30 times, then using a mould with the diameter of 7 multiplied by 7 millimeters to cut the potatoes into strips, boiling the strips in boiled water for 3 minutes, draining and fishing out the strips, taking the strips of the potatoes at the same position, placing the strips of the potatoes in a pot with the oil temperature of 200 ℃, continuously turning over for 4 minutes, draining residual oil, carrying out Soxhlet extraction for 8 hours by using petroleum ether, then carrying out vacuum rotary evaporation by a reflux bottle, placing a small amount of residual liquid in a ventilation cabinet to volatilize, measuring and calculating the oil absorption of the strips of the oil of each group of potato strips. Meanwhile, under the field intensity of 0-3.0kV/cm, the oil absorption is gradually reduced along with the increase of the field intensity. The results demonstrate that pretreatment of starch-based materials with a pulsed electric field can reduce oil absorption in the material frying process.
Table 1 shows the oil absorption of the different pretreated potato crisps.
TABLE 1
| Blank space | 1.0kV/cm | 2.0kV/cm | 3.0kV/cm | |
| Oil absorption (g/100g) | 15.23±0.14 | 14.65±0.11 | 14.37±0.18 | 13.89±0.23 |
The embodiments of the present invention are not limited to the embodiments described above, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention.
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| CN101564197A (en) * | 2009-03-18 | 2009-10-28 | 昆明理工大学 | Pulse electric field device for drying and dehydration pretreatment of fruits and vegetables |
| US20160150905A1 (en) * | 2013-07-12 | 2016-06-02 | Ixl Netherlands B.V. | Process for batchwise cooking of a food product using a pulsed electric field and cooking system for such process |
| CN103423970A (en) * | 2013-07-31 | 2013-12-04 | 浙江大学 | High-voltage pulse electric field processing chamber for fruit-vegetable permeation dehydration preprocessing |
| CN206576215U (en) * | 2016-11-09 | 2017-10-24 | 四川农业大学 | The voltage pulse electric field processing device of distance between a kind of adjustable pole plate |
| CN110215983A (en) * | 2019-07-05 | 2019-09-10 | 东北大学 | A method of promote tourmaline to activate using high electric field pulse |
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