Oil production method based on oil cell reactor principle

Abstract

The invention relates to an oil preparation method based on an oil material cell reactor principle, which comprises the following steps: S1, comprehensively grading rapeseeds into mature grains and immature grains according to appearance color and grain size; s2, performing after-ripening reaction on the sorted immature rapeseed grains under the conditions of natural illumination or artificial illumination or both of the natural illumination and the artificial illumination and certain temperature and humidity; s3, merging the ripe rapeseeds sorted in the step S1 and the rapeseeds subjected to light-promoted after-ripening treatment in the step S2, and putting the merged rapeseeds in a microwave field or an infrared field or a multi-physical field of the microwave field and the infrared field for collaborative pretreatment so as to continue cell reaction; s4, the rapeseeds subjected to multi-field collaborative pretreatment are subjected to tempering and then guided into a low-temperature oil press to be squeezed to prepare oil; and S5, cooling the squeezed crude oil, and then carrying out precision filtration at a relatively low temperature to obtain finished oil. According to the method, migration of natural nutritional ingredients into oil and generation of a large amount of pleasant aroma substances are promoted at a relatively low temperature, and high-quality edible oil is produced.

Description

Technical Field

[0001] The present invention relates to the technical field of oil preparation, and more particularly to an oil preparation method based on the principle of an oil cell reactor. Background Art

[0002] Oils and fats are one of the three major nutrients for humans, providing the body with essential fat and energy, serving as a primary source of essential fatty acids, and serving as a medium for the absorption of fat-soluble nutrients, playing a vital role in health and well-being. The current oil production process, which predominantly involves pre-pressing, extraction, and chemical refining to produce salad oil (primary oil), involves high temperatures, prolonged processing, and excessive processing, leading to losses of over 60% of nutritional and functional components such as vitamin E, phytosterols, and polyphenols. This process is not only energy-intensive and time-consuming, but also prone to the production of risk factors such as benzopyrene and trans fatty acids. The resulting meal protein is severely denatured, with significant loss of effective amino acids, significantly reducing the biological value of the protein and making it difficult to further process and utilize, resulting in significant waste. In recent years, streamlined oil processing techniques have become increasingly popular. These so-called streamlined processes primarily eliminate the complex chemical refining process. After high-temperature roasting and pressing, the crude oil is simply washed and filtered, or directly filtered, and then allowed to settle to remove water to yield the finished oil. Because these streamlined processes eliminate the need for complex chemical refining, the nutritional content of the finished oil is largely retained, and the oil possesses a distinct aroma, securing a niche in the market. However, these processes also present some challenges. For example, they require very high raw material quality, otherwise the finished oil can easily substandard and have a darker color. Their high-temperature frying process, coupled with improper temperature control, can easily generate safety risks such as benzopyrene. Furthermore, sedimentation-based dewatering is limited, often resulting in excessive moisture content in the oil, significantly shortening the shelf life of the finished oil. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an oil production method based on the principle of an oil cell reactor, which can promote the migration of natural nutrients into the oil and the large-scale production of pleasant aroma substances at a lower temperature, and ultimately produce high-quality edible oil.

[0004] The technical solution adopted by the present invention to solve the technical problem is to construct an oil production method based on the principle of an oil cell reactor, comprising the following steps:

[0005] S1. Classifying rapeseed into mature and immature seeds based on appearance color and seed size;

[0006] S2. placing the sorted immature rapeseed kernels under natural light or artificial light or both and certain temperature and humidity conditions for after-ripening reaction;

[0007] S3, combining the mature rapeseed kernels sorted in step S1 and the rapeseed kernels subjected to light-induced ripening in step S2, and subjecting them to a synergistic pretreatment in a microwave field, an infrared field, or a multi-physical field comprising both, to continue the cellular reaction;

[0008] S4, conditioning the rapeseed that has undergone the multi-field collaborative pretreatment, and then introducing it into a low-temperature oil press for pressing and producing oil;

[0009] S5. Cool the squeezed crude oil and then perform precision filtration at a lower temperature to obtain finished oil.

[0010] According to the above scheme, in step S1, the method for grading rapeseed includes the following steps:

[0011] S101, using a grading screen to separate the rapeseed into two levels: an oversize fraction and an undersize fraction;

[0012] S102, manually identifying rapeseeds with different degrees of green color from the oversize rapeseeds, and then allowing the color sorter to autonomously learn and adjust parameters before color sorting the oversize rapeseeds to select the green rapeseeds with a high degree of similarity to the reference color;

[0013] S103, combining the green rapeseeds with a high color similarity to the reference and the sieve residues as immature kernels.

[0014] According to the above scheme, in step S101, the moisture content of the rapeseed is 8% to 10%, and the mesh hole diameter of the grading screen is 1.25 to 1.5 mm;

[0015] In step S102, the chlorophyll content standard used in manual detection is more than 12 mg / kg.

[0016] According to the above scheme, in step S2, the method for performing the after-ripening reaction includes the following steps:

[0017] S201, spraying potassium phosphate buffer evenly on the surface of the sorted immature rapeseed kernels;

[0018] S202, controlling the ambient humidity at 40-60%, raising the ambient temperature from room temperature to 70-80°C within 5-10 minutes, maintaining it for 25-35 minutes, and then returning it to room temperature;

[0019] S203, ultraviolet irradiation for 3 to 5 hours, the intensity is 90-120μmol / m 2 / s, the ambient temperature is controlled at 20-30℃;

[0020] S204, irradiate with a combined light source consisting of blue and red light for 6 to 12 hours at an intensity of 180-260 μmol / m 2 / s, the ambient temperature is controlled at 55-65℃, and ventilation is appropriate.

[0021] According to the above scheme, in step S201, the pH of the potassium phosphate buffer is 6.0-7.5;

[0022] In step S203, the wavelength of the ultraviolet light is 345-385 nm;

[0023] In step S204, the wavelength of the blue light is 455-495 nm, the wavelength of the red light is 665-695 nm, and moderate ventilation is performed in an environment with an oxygen concentration of 20-25%.

[0024] According to the above scheme, in step S3, the mature rapeseed kernels sorted in step S1 and the rapeseed kernels subjected to light-induced ripening in step S2 are combined and then placed in a multi-physical field of a microwave field or an infrared field or both for synergistic pretreatment to continue the cell reaction, which includes the following steps:

[0025] S301, uniformly mixing the mature rapeseed grains sorted in step 1 and the rapeseed grains subjected to light-induced ripening in step 2;

[0026] S302, subjecting the rapeseed to a microwave physical field treatment at a frequency of 2450 MHz or 915 MHz and a power density of 500 to 700 w / kg for 1 to 2 minutes, so that the rapeseed is rapidly heated to 110 to 125° C.;

[0027] S303, placing the rapeseed in a physical field with a wavelength of 2.5-25 μm and a power density of 300-500 w / kg for 1-2 minutes to further increase the rapeseed temperature to 130-145° C.;

[0028] S304. Process the rapeseed seeds at a temperature of 135-145°C for 5-9 minutes in a microwave physical field with a frequency of 2450 MHz or 915 MHz and a power density of 160-260 w / kg and an infrared physical field with a wavelength of 2.5-25 μm and a power density of 200-300 w / kg, alternating between the two at a frequency of every 30-90 seconds.

[0029] According to the above scheme, in step S302, the microwave frequency is 2450 MHz or 915 MHz, and the physical field power density is 500-700 w / kg;

[0030] In step S303, the infrared wavelength is 2.5-25 μm, and the physical field power density is 300-500 w / kg.

[0031] According to the above scheme, in step S304, the microwave frequency is 2450MHz or 915MHz, the physical field power density is 160-260w / kg, the infrared wavelength is 2.5-25μm, the physical field power density is 200-300w / kg, and the alternating treatment frequency is changed once every 30-90s.

[0032] According to the above scheme, in step S4, the rapeseed that has undergone multi-field collaborative pretreatment is tempered and then introduced into a low-temperature oil press for oil pressing. The method is as follows: 0.5% to 1% hydrated silica gel powder is added to the treated rapeseed and stirred evenly, and the rapeseed temperature is adjusted to 80 to 90°C before being introduced into the oil press for oil pressing; wherein the SiO2 purity in the hydrated silica gel powder is not less than 99.0%.

[0033] According to the above scheme, in step S5, the specific method of cooling the squeezed crude oil and then filtering it at a lower temperature to obtain the finished rapeseed oil is as follows: stirring and cooling the squeezed crude rapeseed oil to 35-40° C., and then filtering it with a filter cloth to obtain the finished rapeseed oil; wherein the filter cloth has a pore size of 1000-1500 mesh.

[0034] The oil production method based on the oil cell reactor principle of the present invention has the following beneficial effects:

[0035] 1. The present invention classifies the oilseed raw materials and subjects the separated immature grains to a light-induced ripening process, which rapidly degrades chlorophyll so that its content is ultimately at the same level as that of mature grains. This enhances the quality uniformity of the oil-making raw materials and avoids problems such as large color differences and darkening of the oil caused by inconsistent raw material maturity.

[0036] 2. The present invention uses multiple physical fields for collaborative pretreatment. First, high-field-intensity microwaves are used for short-term treatment to quickly raise the overall temperature of the oilseed kernels. Then, infrared radiation is used to further raise the ambient temperature of the kernels, creating a favorable internal and external environment for oilseed cell reactions. Then, through the alternating effects of low-field-intensity microwaves and infrared fields, the chemical components in the oilseed cells are effectively stimulated to undergo a rapid Maillard reaction to produce aroma and a pulse explosion effect to destroy the cell walls, promoting the dissolution of nutrients and increasing the oil extraction rate. Compared with traditional exogenous heat and high-temperature frying methods, the multi-field collaborative treatment has lower energy consumption and shorter processing time, effectively reducing oil oxidation and nutrient loss.

[0037] 3. The oil production process of the present invention completely abandons the current practice of using exogenous heat and high temperature frying to excessively denature protein to increase oil yield and make the oil fragrant. Instead, each intact seed in the oil plant is regarded as a cell reactor, and a physical field that can penetrate the oil seed cells to a certain extent is used to stimulate the cell contents to produce some physical effects and quickly carry out biochemical reactions, thereby promoting the migration of natural nutrients into the oil and the large-scale production of pleasant aroma substances at a lower temperature, ultimately producing high-quality edible oil. The oil production technology is simple and easy, equipment investment is low, oil production loss is low, and there is no oil foot and soap foot discharge. The finished oil has high nutritional quality, rich and pure aroma and good oxidative stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0039] Figure 1 The present invention is a process technology principle flow chart of the oil production method based on the oil cell reactor principle. DETAILED DESCRIPTION

[0040] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0041] like Figure 1 As shown, the oil production method based on the oil cell reactor principle of the present invention includes the following steps:

[0042] S1. Raw material classification: Rapeseed raw materials are classified into mature grains and immature grains according to appearance color and grain size. Specifically:

[0043] Rapeseed with a moisture content of 8% to 10% is used as raw material. A grading screen with a sieve hole diameter of 1.25 to 1.5 mm is used to separate the rapeseed into two levels: oversize and undersize. Rapeseed with different degrees of green color is manually identified from the oversize rapeseed as a reference. The chlorophyll content is manually detected to be greater than 12 mg / kg. After the color sorter is allowed to autonomously learn and adjust parameters, the oversize is color-sorted to select the green rapeseed with a high color similarity to the reference and combine it with the undersize as immature kernels.

[0044] S2. Photo-induced ripening: The sorted immature rapeseed kernels are placed under natural light, artificial light, or both, and certain temperature and humidity conditions for ripening.

[0045] The surfaces of the sorted immature rapeseed kernels are evenly sprayed with potassium phosphate buffer having a pH of 6.0-7.5 and the ambient humidity is controlled at 40-60%. The ambient temperature is raised from room temperature to 70-80°C within 5-10 minutes and maintained for 25-35 minutes before being lowered to room temperature. The kernels are then irradiated with ultraviolet light (UVA) having a wavelength of 345-385 nm and an intensity of 90-120 μmol / m 2 / s, the ambient temperature is controlled at 20-30℃; then a combined light source consisting of blue light with a wavelength of 455-495nm and red light with a wavelength of 665-695nm is used for irradiation for 6-12h, with an intensity of 180-260μmol / m 2 / s, the ambient temperature is controlled at 55-65℃, and moderate ventilation is carried out in an environment with an oxygen concentration of 20-25%.

[0046] S3, multi-field synergy: After combining the mature rapeseed kernels sorted in step S1 and the rapeseed kernels that have been photo-ripened in step S2, they are placed in a multi-physical field of microwave field, infrared field, or both for synergistic pretreatment to continue the cell reaction. Specifically:

[0047] After the mature rapeseed grains sorted in step S1 and the rapeseed subjected to light-promoted after-ripening in step S2 are uniformly mixed, the rapeseed grains are first placed in a physical field with a microwave power density of 500-700 w / kg at a frequency of 2450 MHz or 915 MHz for 1-2 minutes to rapidly heat the rapeseed to 110-125°C; then placed in a physical field with a wavelength of 2.5-25 μm and a power density of 300-500 w / kg for 1-2 minutes to further heat the rapeseed to 130-145°C; then, the rapeseed grains are alternately treated in a physical field with a microwave power density of 160-260 w / kg at a frequency of 2450 MHz or 915 MHz and an infrared power density of 200-300 w / kg at a wavelength of 2.5-25 μm for 5-9 minutes, with the treatment being switched every 30-90 seconds to control the rapeseed temperature at 135-145°C.

[0048] S4, temperature pressing: The oil material that has been pre-treated by multiple fields is tempered and then introduced into the low-temperature oil press for pressing and oil production.

[0049] 0.5% to 1% hydrated silica gel powder is added to the treated rapeseed and stirred evenly, wherein the SiO2 purity of the hydrated silica gel powder is not less than 99.0%. The rapeseed is temperature adjusted to 80 to 90 DEG C and then introduced into an oil press for squeezing and oil production.

[0050] S5, low temperature fine filtration: cool the squeezed crude oil and then filter it at a lower temperature to obtain the finished oil.

[0051] The crude rapeseed oil is squeezed out, stirred and cooled to 35-40° C., and then filtered through a filter cloth with a pore size of 1000-1500 meshes to obtain finished rapeseed oil.

[0052] Example

[0053] The present invention provides an oil production method based on the oil cell reactor principle, comprising the following steps:

[0054] (1) Raw material classification: First, rapeseed is separated into two grades, oversize and undersize, by a grading sieve. The moisture content of rapeseed in this embodiment is 9%, and the sieve hole diameter of the grading sieve is 1.5 mm. From the oversize rapeseed, seeds with different degrees of green color are manually identified as reference. The chlorophyll content is manually detected to be greater than 12 mg / kg. After the color sorter is allowed to learn and adjust parameters autonomously, the oversize is color-sorted. Green rapeseed with a high color similarity to the reference is selected and combined with the undersize as immature seeds.

[0055] (2) Photo-induced ripening: Potassium phosphate buffer solution with a pH of 7.5 was evenly sprayed on the surface of the sorted immature rapeseed grains and the ambient humidity was controlled at 52%. The ambient temperature was raised from room temperature to 75°C within 7 minutes and maintained for 30 minutes before being lowered to room temperature (25°C). The following operations were then performed in sequence: (a) UVA with a wavelength of 365 nm was first used for irradiation for 3 hours at an intensity of 110 μmol / m 2 / s, the ambient temperature was controlled at 25°C; (b) a combined light source consisting of 475nm blue light and 685nm red light was used for 9h, with an intensity of 220μmol / m 2 / s, the ambient temperature was controlled at 60℃, moderate ventilation was provided, and the oxygen concentration was 22%.

[0056] Table 1 Changes in chlorophyll content in rapeseed before and after photo-induced ripening

[0057]

[0058] (3) Multi-field synergy: After the mature rapeseed grains sorted out in step (1) and the rapeseed that has been photo-ripened in step (2) are evenly mixed, they are first placed in a physical field with a microwave power density of 700w / kg at a frequency of 2450MHz for 1.5min to rapidly heat the rapeseed to 125°C; then placed in a physical field with an infrared power density of 400w / kg at a wavelength of 8μm for 2min to further heat the rapeseed to 140°C; then, the rapeseed is alternately treated in a physical field with a microwave power density of 160w / kg at a frequency of 2450MHz and an infrared power density of 200w / kg at a wavelength of 8μm for 5min, with the treatment changing every 60s to control the rapeseed temperature at 140-145°C.

[0059] Table 2 Comparison of different pretreatment processes for rapeseed

[0060]

[0061] (4) Pressing at appropriate temperature: Add 0.8% hydrated silica gel powder to the treated rapeseed and stir evenly. The SiO2 purity of the hydrated silica gel powder should not be less than 99.0%. Adjust the rapeseed temperature to 85°C and then introduce it into the oil press for pressing and oil production.

[0062] (5) Low-temperature fine filtration: The crude rapeseed oil is stirred and cooled to 38°C, and then filtered using a filter cloth with a pore size of 1000 mesh to obtain finished rapeseed oil.

[0063] Table 3 Comparison of technical and economic indicators of different rapeseed oil preparation processes

[0064]

[0065]

[0066] It can be seen that the technical and economic indicators of the oil production process of the present invention are significantly better than those of the control process.

[0067] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A method for producing oil based on the principle of an oil cell reactor, characterized in that: The following steps are involved: S1. Classifying rapeseed into mature and immature seeds based on appearance color and seed size; S2. placing the sorted immature rapeseed kernels under natural light or artificial light or both and certain temperature and humidity conditions for after-ripening reaction; S3, combining the mature rapeseed kernels sorted in step S1 and the rapeseed kernels subjected to light-induced ripening in step S2, and subjecting them to a synergistic pretreatment in a microwave field, an infrared field, or a multi-physical field comprising both, to continue the cellular reaction; S4, conditioning the rapeseed that has undergone the multi-field collaborative pretreatment, and then introducing it into a low-temperature oil press for pressing and producing oil; S5. Cool the squeezed crude oil and then perform precision filtration at a lower temperature to obtain finished oil.

2. The oil production method based on the oil cell reactor principle according to claim 1 is characterized in that: In step S1, the method for grading rapeseed comprises the following steps: S101, using a grading screen to separate the rapeseed into two levels: an oversize fraction and an undersize fraction; S102, manually identifying rapeseeds with different degrees of green color from the oversize rapeseeds, and then allowing the color sorter to autonomously learn and adjust parameters before color sorting the oversize rapeseeds to select the green rapeseeds with a high degree of similarity to the reference color; S103, combining the green rapeseeds with a high color similarity to the reference and the sieve residues as immature kernels.

3. The oil production method based on the oil cell reactor principle according to claim 2 is characterized in that: In step S101, the moisture content of the rapeseed is 8% to 10%, and the sieve hole diameter of the grading screen is 1.25 to 1.5 mm; In step S102, the chlorophyll content standard used in manual detection is more than 12 mg / kg.

4. The oil production method based on the oil cell reactor principle according to claim 3 is characterized in that: In step S2, the method for performing the after-ripening reaction comprises the following steps: S201, spraying potassium phosphate buffer evenly on the surface of the sorted immature rapeseed kernels; S202, controlling the ambient humidity at 40-60%, raising the ambient temperature from room temperature to 70-80°C within 5-10 minutes, maintaining it for 25-35 minutes, and then returning it to room temperature; S203, ultraviolet irradiation for 3 to 5 hours, the intensity is 90-120μmol / m 2 / s, the ambient temperature is controlled at 20-30℃; S204, irradiate with a combined light source consisting of blue and red light for 6 to 12 hours at an intensity of 180-260 μmol / m 2 / s, the ambient temperature is controlled at 55-65℃, and ventilation is appropriate.

5. The oil production method based on the oil cell reactor principle according to claim 4 is characterized in that: In step S201, the pH of the potassium phosphate buffer is 6.0-7.5; In step S203, the wavelength of the ultraviolet light is 345-385 nm; In step S204, the wavelength of the blue light is 455-495 nm, the wavelength of the red light is 665-695 nm, and moderate ventilation is performed in an environment with an oxygen concentration of 20-25%.

6. The oil production method based on the oil cell reactor principle according to claim 5, characterized in that: In step S3, the method of combining the mature rapeseed grains sorted in step S1 and the rapeseed subjected to light-induced ripening in step S2 and placing them in a microwave field, an infrared field, or a multi-physical field of both for synergistic pretreatment to continue the cell reaction includes the following steps: S301, uniformly mixing the mature rapeseed grains sorted in step 1 and the rapeseed grains subjected to light-induced ripening in step 2; S302, subjecting the rapeseed to a microwave physical field treatment at a frequency of 2450 MHz or 915 MHz and a power density of 500 to 700 w / kg for 1 to 2 minutes, so that the rapeseed is rapidly heated to 110 to 125° C.; S303, placing the rapeseed in a physical field with a wavelength of 2.5-25 μm and a power density of 300-500 w / kg for 1-2 minutes to further increase the rapeseed temperature to 130-145° C.; S304. Process the rapeseed seeds at a temperature of 135-145°C for 5-9 minutes in a microwave physical field with a frequency of 2450 MHz or 915 MHz and a power density of 160-260 w / kg and an infrared physical field with a wavelength of 2.5-25 μm and a power density of 200-300 w / kg, alternating between the two at a frequency of every 30-90 seconds.

7. The oil production method based on the oil cell reactor principle according to claim 6, characterized in that: In step S302, the microwave frequency is 2450 MHz or 915 MHz, and the physical field power density is 500-700 w / kg; In step S303, the infrared wavelength is 2.5-25 μm, and the physical field power density is 300-500 w / kg.

8. The oil production method based on the oil cell reactor principle according to claim 7 is characterized in that: In step S304, the microwave frequency is 2450 MHz or 915 MHz, the physical field power density is 160-260 w / kg, the infrared wavelength is 2.5-25 μm, the physical field power density is 200-300 w / kg, and the alternating treatment frequency is changed once every 30-90 seconds.

9. The oil production method based on the oil cell reactor principle according to claim 8, characterized in that: In step S4, the rapeseed that has undergone multi-field collaborative pretreatment is tempered and then introduced into a low-temperature oil press for oil pressing. The method is as follows: 0.5% to 1% hydrated silica gel powder is added to the treated rapeseed and stirred evenly, and the rapeseed temperature is adjusted to 80 to 90° C. before being introduced into the oil press for oil pressing. The purity of SiO2 in the hydrated silica gel powder is not less than 99.0%.

10. The oil production method based on the oil cell reactor principle according to claim 10, characterized in that: In step S5, the crude rapeseed oil is cooled and then precisely filtered at a lower temperature to obtain the finished rapeseed oil. The specific method is as follows: the crude rapeseed oil is stirred and cooled to 35-40° C., and then filtered using a filter cloth to obtain the finished rapeseed oil; wherein the filter cloth has a pore size of 1000-1500 mesh.

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