CN113105938A - Preparation method of cold-pressed rapeseed oil rich in antioxidant - Google Patents
Preparation method of cold-pressed rapeseed oil rich in antioxidant Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/02—Pretreatment
- C11B1/04—Pretreatment of vegetable raw material
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/06—Production of fats or fatty oils from raw materials by pressing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
Abstract
The invention discloses a preparation method of cold-pressed rapeseed oil rich in antioxidant, belonging to the field of grain and oil processing. According to the invention, the rapeseed is subjected to high-temperature steam treatment, subjected to ventilation drying and then subjected to infrared heating seed frying, and then cooled to room temperature after seed frying and squeezed to obtain the cold-pressed rapeseed oil. The invention fully exerts the permeation effect of high-temperature steam, improves the fluidity of the antioxidant and promotes the generation of sinapic acid derivatives. The oxidation completion time of the rapeseed oil obtained by the invention reaches 13.26h, the tocopherol content reaches 1033.70mg/kg, and the Canoll content reaches 2124.40 mg/kg. The process is simple and safe to operate, green and environment-friendly, the antioxidant of the rapeseed oil is obviously increased, and the obtained rapeseed oil has good oxidation stability.
Description
Technical Field
The invention relates to a preparation method of cold-pressed rapeseed oil rich in antioxidant, belongs to the field of grain and oil processing, and particularly relates to deep processing of rapeseed.
Background
Rapeseed is one of the main oil crops in China, the grease of the rapeseed is rich in unsaturated fatty acids such as oleic acid, linoleic acid and linolenic acid, and the proportion of the unsaturated fatty acids is proper, so that the rapeseed is beneficial to the absorption of human bodies. In addition, the rapeseed oil contains a large amount of natural active ingredients, such as tocopherol, sinapic acid, sterol and the like, and the active ingredients further improve the nutritional value of the rapeseed oil.
The antioxidant plays an important role in the shelf life of rapeseed oil, and in addition to tocopherol, a new polyphenol, 2, 6-dimethoxy-4 vinylphenol (Canolol), is detected in rapeseed oil after frying and pressing. Canolol is the-CH at the para-terminus of sinapic acid phenol2the-COOH is generated by decarboxylation at high temperature, has better lipid solubility than sinapic acid, and has important significance for maintaining the stability of the rapeseed oil and prolonging the shelf life.
In the existing cold-pressed rapeseed oil preparation process, roller heating, microwave heating and infrared heating can be applied to seed frying, the center temperature of the rapeseed subjected to microwave treatment can reach 230-270 ℃, meanwhile, the cold-pressed oil subjected to microwave treatment has the highest content of Canoll, but the cold-pressed oil subjected to microwave heating is greatly influenced by the moisture content and is not widely applied temporarily. The infrared heating utilizes the penetrability and the irradiation characteristic of infrared rays to comprehensively heat materials, and the application field of the infrared heating is gradually expanded. The natural antioxidant in the cold-pressed rapeseed oil not only has important nutritional and physiological significance, but also becomes an additive of refined rapeseed oil and other grease, and is the most convenient and most suitable antioxidant source. The temperature and moisture content of the process affect the Canolol formation reaction. Therefore, a more efficient method for preparing cold-pressed rapeseed oil rich in antioxidant is needed.
Disclosure of Invention
The invention aims to provide a preparation method of cold-pressed rapeseed oil rich in antioxidant, and the rapeseed oil prepared by the method has high antioxidant content. In order to realize the purpose, the invention carries out high-temperature steam treatment on the rapeseed, then uses infrared rays to heat and fry the seeds, and the fried seeds are cooled and then are cold-pressed to obtain the rapeseed oil.
Specifically, the first purpose of the invention is to provide a method for preparing cold-pressed rapeseed oil rich in antioxidant, which comprises the following steps: the rapeseed is treated by high-temperature steam, then dried, then subjected to infrared irradiation heating seed frying, cooled and then cold-pressed to obtain the rapeseed oil.
In one embodiment of the invention, the high-temperature steam treatment of the rapeseed is carried out in a steam boiler, the steam temperature is 101-141 ℃, the pressure is 0.1MPa, and the steam treatment time is 10-15 min.
In one embodiment of the present invention, the drying is a through-air drying, in which the rapeseed subjected to the high-temperature steam treatment is spread and dried in a through-air place until the moisture content is 12% to 20%.
In one embodiment of the invention, the infrared wavelength used for heating the seeds by infrared irradiation is medium wave, the power is 1-1.5 kW, the seed frying temperature is 160-200 ℃, and the time is 10-20 min.
In one embodiment of the invention, the fried seeds are cooled to 25-35 ℃, then subjected to hydraulic oil squeezing under the pressure of 30-40 MPa for 15-30 min, and the squeezed rapeseed oil is obtained by standing and filtering the obtained rapeseed oil.
In one embodiment of the present invention, the method specifically comprises the following steps:
(1) rapeseed selection and impurity removal: selecting rapeseeds with complete particles, wherein the water content is 9% -10%, and removing solid impurities in the rapeseeds;
(2) wrapping the rapeseeds obtained in the step (1) with a cloth bag, and then carrying out high-temperature steam treatment, wherein the steam temperature is 101-141 ℃, the pressure is 0.1MPa, and the time is 10-15 min;
(3) flatly paving the rapeseeds obtained in the step (2) while the rapeseeds are hot, and drying the rapeseeds in a ventilated place until the moisture content is 12% -20% and the air flow rate is 10-20L/h;
(4) placing the rapeseeds obtained in the step (3) under a medium-wave infrared lamp to heat and fry the rapeseeds, wherein the power of a heating pipe is 1-1.5 kW, the distance between the heating pipe and the rapeseeds is 50-150 mm, the thickness of the rapeseeds is 5-7 mm, the air flow rate is 10-20L/h, the irradiation temperature is 160-200 ℃, and the irradiation time is 10-20 min;
(5) and after the seeds are fried, reducing the temperature to 25-35 ℃, controlling the pressure of hydraulic oil pressing to be 30-40 MPa, controlling the pressing time to be 15-30 min, and obtaining cold-pressed rapeseed oil with total impurities less than 0.4% after standing and impurity removal.
In one embodiment of the present invention, the method specifically comprises the following steps:
(1) rapeseed selection and impurity removal: selecting rapeseeds with complete particles, wherein the water content is 9% -10%, and removing solid impurities in the rapeseeds;
(2) wrapping the rapeseeds obtained in the step (1) with a cloth bag, and then carrying out high-temperature steam treatment, wherein the steam temperature is 141 ℃, the pressure is 0.1MPa, and the time is 15 min;
(3) flatly paving the rapeseeds obtained in the step (2) while the rapeseeds are hot, and drying the rapeseeds in a ventilated place until the moisture content is 20%;
(4) placing the rapeseeds obtained in the step (3) under a medium-wave infrared lamp to heat and fry the rapeseeds, wherein the power of a heating pipe is 1.5kW, the distance between the heating pipe and the rapeseeds is 100mm, the thickness of the rapeseeds is 5mm, the air flow rate is 15/h, the irradiation temperature is 180 ℃, and the irradiation time is 15 min;
(5) and (3) cooling to room temperature after seed frying is finished, pressing under the pressure of hydraulic oil pressing of 35MPa for 20min, and standing to remove impurities to obtain cold-pressed rapeseed oil.
The invention also provides the application of the method in the grain and oil processing field.
The invention has the beneficial effects that:
the invention applies the steam treatment method to the pretreatment of the rapeseed, and the damp and hot steam increases the moisture content of the rapeseed, thereby being beneficial to the dissociation and flow of phenolic substances in the rapeseed. Meanwhile, infrared further heating of the rapeseed promotes decarboxylation of the sinapic acid, and the content of Canoll in the rapeseed oil is increased.
Drawings
FIG. 1 is a process flow diagram of the process of the present invention.
Detailed Description
The method for measuring the acid value, the oxidation completion time of the rapeseed oil and the content of the tocopherol in the oil comprises the following steps: GB 5009.229-2016 determination of acid value in food safety national standard food; GB/T21121-2007 determination of oxidation stability of animal and vegetable fats (accelerated oxidation test); GB/T26635-;
measuring the chromatographic model and the operating parameters of the canola oil by liquid chromatography: shimadzu high performance liquid chromatography, the chromatographic column is C18 column (250X 4.6mm,5 μm), the mobile phase ratio: a (0.05% aqueous acetic acid, v/v) and B (methanol) were as follows: 50% B (0-5 min), 70% B (5-10 min), 75% B (10-15 min), 95% B (15-25 min), 50% B (25-30 min). The flow rate is 1mL/min, the column temperature is 30 ℃, the detection wavelength is 280nm, and the sample injection amount is 10 mu L.
The present invention is further described below with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1
10kg of rapeseeds which are complete in particles and cleaned and subjected to impurity removal are placed into a cloth bag, the cloth bag is treated by high-temperature steam at 101 ℃ for 15min, then the rapeseeds are flatly paved in an iron plate, the air bag is dried in a fume hood until the moisture content is 12%, then the rapeseeds are placed under a medium-wave infrared lamp to be heated and fried, the infrared power is 1kW, the distance between the rapeseeds and an infrared lamp tube is 50mm, the thickness of the rapeseeds is 5mm, the air flow rate is 15L/h, the irradiation and seed frying temperature is 160 ℃, and the irradiation and seed frying. And (3) after the seeds are fried, cooling to 25 ℃, squeezing, wherein the squeezing pressure is 30MPa, the time is 20min, and after squeezing, standing and impurity removal, the total impurities are less than 0.4%, so that the cold-pressed rapeseed oil is obtained.
Example 2
10kg of rapeseeds which are complete in particles and cleaned and subjected to impurity removal are placed into a cloth bag, the cloth bag is treated by high-temperature steam at 121 ℃ for 15min, then the rapeseeds are flatly paved in an iron plate, the air bag is dried in a fume hood until the moisture content is 20%, then the rapeseeds are placed under a medium-wave infrared lamp to be heated and fried, the infrared power is 1.5kW, the distance between the rapeseeds and an infrared lamp tube is 50mm, the thickness of the rapeseeds is 5mm, the air flow rate is 20L/h, the irradiation and seed frying temperature is 160 ℃, and the irradiation and seed frying. And cooling to 30 ℃ after seed frying, squeezing for 30min under the squeezing pressure of 30MPa, standing after squeezing to remove impurities, and obtaining cold-pressed rapeseed oil with total impurities less than 0.4%.
Example 3
10kg of rapeseeds which are complete in particles and cleaned and subjected to impurity removal are placed into a cloth bag, the cloth bag is treated by high-temperature steam at 141 ℃ for 15min, then the rapeseeds are flatly paved in an iron plate, dried in a fume hood until the moisture content is 16%, and then placed under a medium-wave infrared lamp to heat and fry the rapeseeds, wherein the infrared power is 1.5kW, the distance between the rapeseeds and an infrared lamp tube is 150mm, the thickness of the rapeseeds is 5mm, the air flow rate is 20L/h, and the irradiation and seed frying temperature is 200 ℃ for 10 min. And after the seeds are fried, cooling to 35 ℃, squeezing for 20min under the pressure of 30MPa, and standing for impurity removal after squeezing to obtain cold-pressed rapeseed oil with total impurities less than 0.4%.
Example 4
10kg of rapeseeds which are complete in particles and cleaned and subjected to impurity removal are placed into a cloth bag, the cloth bag is treated by high-temperature steam at 101 ℃ for 15min, then the rapeseeds are flatly paved in an iron plate, the air bag is dried in a fume hood until the moisture content is 16%, then the rapeseeds are placed under a medium-wave infrared lamp to be heated and fried, the infrared power is 1kW, the distance between the rapeseeds and an infrared lamp tube is 80mm, the thickness of the rapeseeds is 6mm, the air flow rate is 20L/h, the irradiation and seed frying temperature is 180 ℃, and the time is 15 min. And after the seeds are fried, cooling to 30 ℃, squeezing for 15min under the squeezing pressure of 35MPa, standing after squeezing to remove impurities and obtain cold-pressed rapeseed oil with total impurities less than 0.4%.
Example 5
10kg of rapeseeds which are complete in particles and cleaned and subjected to impurity removal are placed into a cloth bag, the cloth bag is treated by high-temperature steam at 121 ℃ for 15min, then the rapeseeds are flatly paved in an iron plate, the air bag is dried in a fume hood until the moisture content is 16%, then the rapeseeds are placed under a medium-wave infrared lamp to be heated and fried, the infrared power is 1kW, the distance between the rapeseeds and an infrared lamp tube is 50mm, the thickness of the rapeseeds is 7mm, the air flow rate is 15L/h, the irradiation and seed frying temperature is 180 ℃, and the irradiation and seed frying. And after the seeds are fried, cooling to 30 ℃, squeezing for 25min under the pressure of 30MPa, and standing for impurity removal after squeezing to obtain cold-pressed rapeseed oil with total impurities less than 0.4%.
Example 6
10kg of rapeseeds which are complete in particles and cleaned and subjected to impurity removal are placed into a cloth bag, the cloth bag is treated by high-temperature steam at 141 ℃ for 15min, then the rapeseeds are flatly paved in an iron plate, the air bag is dried in a fume hood until the moisture content is 20%, then the rapeseeds are placed under a medium-wave infrared lamp to be heated and fried, the infrared power is 1.5kW, the distance between the rapeseeds and an infrared lamp tube is 100mm, the thickness of the rapeseeds is 5mm, the air flow rate is 15L/h, the irradiation and seed frying temperature is 180 ℃, and the time is 15 min. And after the seeds are fried, cooling to 25 ℃, squeezing for 20min under the squeezing pressure of 35MPa, standing after squeezing to remove impurities and obtain cold-pressed rapeseed oil with total impurities less than 0.4%.
Example 7
10kg of rapeseeds which are complete in particles and cleaned and subjected to impurity removal are placed into a cloth bag, the cloth bag is treated by high-temperature steam at 121 ℃ for 15min, then the rapeseeds are flatly paved in an iron plate, the air bag is dried in a fume hood until the moisture content is 20%, then the rapeseeds are placed under a medium-wave infrared lamp to be heated and fried, the infrared power is 1.5kW, the distance between the rapeseeds and an infrared lamp tube is 100mm, the thickness of the rapeseeds is 5mm, the air flow rate is 20L/h, the irradiation and seed frying temperature is 200 ℃, and the irradiation and seed frying. And after the seeds are fried, cooling to 25 ℃, squeezing for 20min under the squeezing pressure of 35MPa, standing after squeezing to remove impurities and obtain cold-pressed rapeseed oil with total impurities less than 0.4%.
Comparative example 1
Preparing rapeseed oil by adopting high-temperature steam treatment (no infrared treatment): 10kg of rapeseed which is complete in particle, cleaned and impurity-removed is loaded into a cloth bag, the cloth bag is treated by high-temperature steam at 121 ℃ for 15min, then the rapeseed is flatly paved in an iron plate, the cloth bag is dried in a fume hood until the water content is 16%, the cloth bag is squeezed after being cooled to 30 ℃, the squeezing pressure is 30MPa, the time is 25min, and the cold-pressed rapeseed oil is obtained after the pressing, standing and impurity removal are carried out, wherein the total impurities are less than 0.4%.
Comparative example 2
Preparing rapeseed oil by infrared seed frying (without steam treatment): 10kg of rapeseeds which are complete in particles and cleaned and subjected to impurity removal are adjusted to have the water content of 16 percent, then the rapeseeds are heated and fried under a medium-wave infrared lamp, the infrared power is 1kW, the distance between the rapeseeds and an infrared lamp tube is 80mm, the thickness of the rapeseeds is 6mm, the air flow rate is 20L/h, the irradiation and seed frying temperature is 180 ℃, and the time is 15 min. And after the seeds are fried, cooling to 30 ℃, squeezing for 15min under the squeezing pressure of 35MPa, standing after squeezing to remove impurities and obtain cold-pressed rapeseed oil with total impurities less than 0.4%.
Comparative example 3
Preparing rapeseed oil by adopting roller seed frying (without steam treatment) at 141 ℃: and (2) loading 10kg of rapeseed which is complete in particle and is cleaned and impurity-removed into a roller seed frying machine, frying the rapeseed for 15min at 141 ℃, cooling to 25 ℃, squeezing at 35MPa for 20min, standing after squeezing for impurity removal until the total impurities are less than 0.4%, and thus obtaining the cold-pressed rapeseed oil.
Comparative example 4
Preparing rapeseed oil by traditional 180 ℃ roller seed frying: 10kg of rapeseed which is complete in particle and is cleaned and purified is added into a roller seed frying machine to fry seeds for 15min at 180 ℃, the seeds are squeezed after being cooled to 25 ℃, the squeezing pressure is 35MPa, the time is 20min, the total impurities are less than 0.4 percent after the pressing and the standing and the impurity removal, and the cold-pressed rapeseed oil is obtained.
Comparative example 5
Preparing rapeseed oil by infrared seed frying after high-temperature steam treatment (without ventilation drying): 10kg of rapeseeds which are complete in particles and cleaned and subjected to impurity removal are placed into a cloth bag, the cloth bag is treated by high-temperature steam at 141 ℃ for 15min, then the rapeseeds are flatly paved in an iron plate and placed under a medium-wave infrared lamp to heat and fry the rapeseeds, the infrared power is 1.5kW, the distance between the rapeseeds and an infrared lamp tube is 100mm, the thickness of the rapeseeds is 5mm, the air flow rate is 15L/h, the irradiation and seed frying temperature is 180 ℃, and the time is 15 min. And after the seeds are fried, cooling to 25 ℃, squeezing for 20min under the squeezing pressure of 35MPa, standing after squeezing to remove impurities and obtain cold-pressed rapeseed oil with total impurities less than 0.4%.
Table 1 shows the acid value, tocopherol content, Canoll content, and oxidation completion time of rapeseed oil prepared in examples 1 to 10 and comparative examples 1 to 5.
Table 1 acid value, tocopherol content, canoll content and oxidation completion time of rapeseed oils of examples and comparative examples
As can be seen from the tables, the highest tocopherol content in the rapeseed oil prepared by processing infrared stir-frying seeds with high-temperature steam reaches 1033.70mg/kg, the Canoll content reaches 2124.40mg/kg, the oxidation completion time reaches 13.26h, and the oil yield reaches 29.9%. The rapeseed oil prepared by the method has better oil yield, tocopherol content and Canoll content than the rapeseed oil prepared by the existing method, and the oxidation completion time is longer. The possible reasons are: the invention applies the steam treatment method to the pretreatment of the rapeseed, and the damp and hot steam increases the moisture content of the rapeseed, thereby being beneficial to the dissociation and flow of phenolic substances in the rapeseed. Meanwhile, infrared further heating of the rapeseed promotes decarboxylation of the sinapic acid, and the content of Canoll in the rapeseed oil is increased.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A preparation method of cold-pressed rapeseed oil rich in antioxidant is characterized by comprising the following steps: the rapeseed is treated by high-temperature steam, then dried, then subjected to infrared irradiation heating seed frying, cooled and then cold-pressed to obtain the rapeseed oil.
2. The method according to claim 1, wherein the steam temperature of the high-temperature steam is 101 to 141 ℃, the pressure is 0.1MPa, and the steam treatment time is 10 to 15 min.
3. The process according to claim 1 or 2, characterized in that the drying is a through-air drying.
4. The method according to claim 3, wherein the aeration-drying is carried out by spreading and drying the rapeseed subjected to the high-temperature steam treatment in an aeration place until the moisture content is 12 to 20%.
5. A preparation method according to any one of claims 1 to 4, characterized in that the infrared wavelength used for heating the seeds by infrared irradiation is medium wave, the power is 1 to 1.5kW, the seed frying temperature is 160 to 200 ℃, and the time is 10 to 20 min.
6. The method according to any one of claims 1 to 5, wherein the seeds are cooled to 25 to 35 ℃ and then subjected to hydraulic pressing under a pressure of 30 to 40MPa for 15 to 30 min.
7. The preparation method according to any one of claims 1 to 6, characterized in that the method comprises the following steps:
(1) rapeseed selection and impurity removal: selecting rapeseeds with complete particles, wherein the water content is 9% -10%, and removing solid impurities in the rapeseeds;
(2) wrapping the rapeseeds obtained in the step (1) with a cloth bag, and then carrying out high-temperature steam treatment, wherein the steam temperature is 101-141 ℃, the pressure is 0.1MPa, and the time is 10-15 min;
(3) flatly paving the rapeseeds obtained in the step (2) while the rapeseeds are hot, and drying the rapeseeds in a ventilated place until the moisture content is 12% -20% and the air flow rate is 10-20L/h;
(4) placing the rapeseeds obtained in the step (3) under a medium-wave infrared lamp to heat and fry the rapeseeds, wherein the power of a heating pipe is 1-1.5 kW, the distance between the heating pipe and the rapeseeds is 50-150 mm, the thickness of the rapeseeds is 5-7 mm, the air flow rate is 10-20L/h, the irradiation temperature is 160-200 ℃, and the irradiation time is 10-20 min;
(5) and after the seeds are fried, reducing the temperature to 25-35 ℃, and pressing oil by hydraulic pressure for 15-30 min at the pressure of 30-40 MPa to obtain cold-pressed rapeseed oil.
8. The process of claim 7, wherein in step (5), impurities are removed to a total impurity of less than 0.4%.
9. The method according to claim 7, characterized in that it comprises in particular:
(1) rapeseed selection and impurity removal: selecting rapeseeds with complete particles, wherein the water content is 9% -10%, and removing solid impurities in the rapeseeds;
(2) wrapping the rapeseeds obtained in the step (1) with a cloth bag, and then carrying out high-temperature steam treatment, wherein the steam temperature is 141 ℃, the pressure is 0.1MPa, and the time is 15 min;
(3) flatly paving the rapeseeds obtained in the step (2) while the rapeseeds are hot, and drying the rapeseeds in a ventilated place until the moisture content is 20%;
(4) placing the rapeseeds obtained in the step (3) under a medium-wave infrared lamp to heat and fry the rapeseeds, wherein the power of a heating pipe is 1.5kW, the distance between the heating pipe and the rapeseeds is 100mm, the thickness of the rapeseeds is 5mm, the air flow rate is 15/h, the irradiation temperature is 180 ℃, and the irradiation time is 15 min;
(5) and (3) cooling to room temperature after seed frying is finished, pressing under the pressure of hydraulic oil pressing of 35MPa for 20min, and standing to remove impurities to obtain cold-pressed rapeseed oil.
10. Use of the preparation method according to any one of claims 1 to 9 in the field of grain and oil processing.
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|---|---|---|---|---|
| CN113845969A (en) * | 2021-09-17 | 2021-12-28 | 丰益(上海)生物技术研发中心有限公司 | Rapeseed oil and preparation method thereof |
| CN113845969B (en) * | 2021-09-17 | 2023-11-10 | 丰益(上海)生物技术研发中心有限公司 | Rapeseed oil production method and rapeseed oil |
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| CN113105938B (en) | 2022-09-06 |
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