CN107460034A - Giving off a strong fragrance rapeseed oil and preparation method thereof - Google Patents

Abstract

The invention relates to a strong fragrant rapeseed oil and a preparation method thereof. The preparation method comprises the following steps: first, the rapeseed is subjected to impurity removal treatment to obtain clean rapeseed; the tea leaves and/or tea seed peels are subjected to ultrafine grinding treatment, then sieve, then add soft water and perform ultrasonic treatment, then filter and collect the filtrate; use the rapeseed to carry out the filtrate by atomizing water equipment; place the rapeseed in a conditioning tower , carry out rapeseed treatment; put the product into a drum seed frying machine to fry seeds; press the product and then centrifuge, then filter and collect the filtrate to obtain fragrant rapeseed oil. The preparation method of the fragrant rapeseed oil of the present invention can produce the fragrant rapeseed oil with strong flavor and smooth mouthfeel, and can make the fragrant rapeseed oil produced by the traditional frying process free of benzopyrene Or the content does not exceed the national standard, so that the fragrant rapeseed oil is natural, green and healthy.

Description

Fragrant rapeseed oil and preparation method thereof

technical field

The invention belongs to the technical field of food oil processing, and in particular relates to a strong-flavored rapeseed oil and a preparation method thereof.

Background technique

With the continuous improvement of people's living standards, great changes have taken place in residents' consumption concepts. They have changed from eating bland and tasteless rapeseed salad oil to eating fragrant rapeseed oil with traditional strong fragrance. Its unique fragrant rapeseed oil Flavor - strong aroma, smooth taste, loved by residents in Hunan, Hubei, Yunnan, Guizhou and Sichuan.

The flavor of fragrant rapeseed oil is mainly due to the Maillard reaction and oil oxidation reaction of rapeseed under high temperature conditions, which generate small molecular odor substances such as aldehydes, alcohols, ketones and heterocyclics, and deepen the color of the oil. Processing The process has a significant impact on the flavor of Luzhou-flavored rapeseed oil, and the types and relative contents of heterocyclic substances in pre-pressed crude oil obtained by high-temperature steaming, frying and pressing are significantly higher than those in other rapeseed oils. The higher the temperature, the longer the frying time, and the more flavor substances will be obtained, but the carcinogen benzopyrene will also be produced.

Benzopyrene, also known as 3,4-benzopyrene, is one of the three major carcinogens (nitrosamines, aflatoxins and benzopyrene) recognized in the world. Many studies have shown that benzopyrene can induce leukemia, The occurrence of lung cancer, liver cancer and breast cancer, because benzopyrene has strong lipophilic properties, can enter oily food through processing, transportation, storage and other ways. The research on the formation mechanism of benzopyrene in edible vegetable oil has not yet made great progress, and the reason for the formation of benzopyrene in edible vegetable oil is still unclear.

At present, the patents on Luzhou-flavored rapeseed oil are all focused on its oil production and refining process, and little attention has been paid to reducing the content of benzopyrene while inheriting the traditional high-temperature frying process, and retaining the flavor of Luzhou-flavored rapeseed oil in childhood. For example: Patent Application No. 201610797438.6, a processing method of fragrant rapeseed oil and patent application No. 201610773485.7, adopt degumming, alkali refining, decolorization, deodorization and other processes to process fragrant rapeseed oil, and process fragrant rapeseed through the above process Most of the flavor and nutrients of the oil have been lost. Patent Application No. 201210477466.1 The preparation method of Luzhou-flavored rapeseed oil adopts a low-temperature frying process with a temperature of 140°C to 145°C. The Luzhou-flavored rapeseed produced by this frying process The flavor of the oil is not mellow, and the fragrance is relatively light. In the first issue of "Agricultural Products Processing" in 2011, Zhang Qianyi and other scholars pointed out that the ideal temperature for frying seeds is between 180°C and 200°C . Patent Application No. 201510360202.1 A preparation method of Luzhou-flavored rapeseed oil. In order to make the prepared Luzhou-flavored rapeseed oil mellow, a high-temperature inert gas is used for heating, drying and drying treatment. This method has high production costs and is easy to produce Benzopyrene is not suitable for industrial production.

Contents of the invention

One object of the present invention is to propose a kind of preparation method of fragrant rapeseed oil.

The preparation method of the fragrant rapeseed oil of the present invention comprises the following steps: S101: firstly remove impurities from the rapeseed to obtain clean rapeseed; S102: subject the tea leaves and/or tea seed peels to superfine grinding, and then Sieve, then according to the material-liquid ratio of 1g: (4mL-8mL) add soft water and perform ultrasonic treatment, then filter and collect the filtrate; S103: use atomization watering equipment to treat the rapeseed obtained in the step S101 The filtrate; S104: place the rapeseed obtained in the step S103 in a conditioning tower, and carry out the treatment of the rapeseed; wherein, the temperature of the rapeseed is 28°C-30°C, and the time is 8h-10h; S105: the The product obtained in the step S104 is put into a drum seed frying machine, and then the temperature of the seed frying machine is adjusted to 180°C-200°C, and then the seeds are fried; S106: after pressing the product obtained in the step S105 Centrifuge, then filter and collect the filtrate to obtain fragrant rapeseed oil.

The preparation method of the fragrant rapeseed oil of the present invention uses discarded tea seed peel as a raw material of tea extract, recycles the tea seed peel, turns waste into wealth, and increases the income of tea growers. Because tea leaves and tea seed peels contain physiologically active substances such as polyphenols and flavonoids, which can inhibit the formation of benzopyrene under high temperature conditions, the tea with strong flavor and smooth taste is produced by the Luzhou-flavored oil-making process (high-temperature fried seeds) At the same time, the fragrant rapeseed oil can make the fragrant rapeseed oil produced by the traditional frying process not contain benzopyrene or the content does not exceed the national standard, making the fragrant rapeseed oil natural, green and healthy.

Another object of the present invention is to propose another preparation method of fragrant rapeseed oil.

The preparation method of the fragrant rapeseed oil includes the following steps: S101: firstly remove impurities from the rapeseed to obtain clean rapeseed; S102: put tea leaves and/or tea seed peels in an extraction tank, and then add Heat the water for leaching, then filter and collect the filtrate; wherein, the ratio of solid to liquid is 1:(2-6), the leaching temperature is 40°C-60°C, the leaching time is 2h-3h, then filter and collect the filtrate; S103: Applying the filtrate to the rapeseed obtained in the step S101 using an atomized watering device; S104: placing the rapeseed obtained in the step S103 in a conditioning tower for moistening the rapeseed; wherein , the temperature of moistening rapeseed is 28°C-30°C, and the time is 8h-10h; S105: Put the product obtained in the step S104 into the drum seed frying machine, and then adjust the temperature of the seed frying machine to 180°C-200°C After ℃, fry the seeds; S106: press the product obtained in the step S105, centrifuge, then filter and collect the filtrate to obtain the fragrant rapeseed oil.

In addition, the preparation method of fragrant rapeseed oil of the present invention can also have the following additional technical features:

Further, in the step S106, a screw oil press is used for pressing.

Further, in the step S101, the impurity removal treatment includes the following steps: using a vibrating sieve to remove impurities, and then using a specific gravity stone remover to remove stones.

Further, in the step S105, the time for frying the seeds is 30 minutes to 60 minutes.

Further, the moisture content of the rapeseed obtained in the step S103 is 10%-12%.

Further, in the step S102, the ultrasonic temperature is 30°C-50°C, the ultrasonic time is 30min-60min, and the ultrasonic power is 200W-250W.

Further, the weight ratio of the rapeseed in the step S101 to the tea leaves and/or tea seed peels in the step S102 is 500:1.

Another object of the present invention is to propose the fragrant rapeseed oil prepared by said method.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

detailed description

Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

Example 1

Embodiment 1 proposes a kind of preparation method of fragrant rapeseed oil, comprises the steps:

(1) First use a vibrating sieve to remove impurities, and then use a specific gravity stoner to remove stones to obtain clean rapeseed.

(2) Ultrafine pulverize the tea leaves and/or tea seed peels, then sieve, add soft water according to the solid-liquid ratio of 1g: 4mL, and then perform ultrasonic treatment, then filter and collect the filtrate. The ultrasonic temperature is 50°C. The time is 30min, and the ultrasonic power is 250W. Wherein, the weight ratio of the rapeseed in the step (1) to the tea leaves and/or tea seed peels in the step (2) is 500:1.

(3) The rapeseed obtained in the step (1) is subjected to the filtrate by means of atomizing watering equipment, and finally the rapeseed with a water content of 10% is obtained.

(4) The rapeseed obtained in the step (3) is placed in a tempering tower, and the rapeseed is moistened; wherein, the temperature of the rapeseed is 30° C., and the time is 8 hours.

(5) Put the product obtained in the step (4) into a drum seed frying machine, then adjust the temperature of the seed frying machine to 200° C., and then fry the seeds for 30 minutes.

(6) The product obtained in the step (5) was squeezed by a screw press and then centrifuged, then filtered and the filtrate was collected to obtain Luzhou-flavored rapeseed oil with a benzopyrene content of 2.3 μg/kg.

Example 2

Embodiment 2 proposes a kind of preparation method of fragrant rapeseed oil, comprises the steps:

(1) First use a vibrating sieve to remove impurities, and then use a specific gravity stoner to remove stones to obtain clean rapeseed.

(2) Ultrafine pulverize the tea leaves and/or tea seed peels, then sieve, add soft water according to the solid-liquid ratio of 1g: 8mL, and then perform ultrasonic treatment, then filter and collect the filtrate, the ultrasonic temperature is 30°C, ultrasonic The time is 60min, and the ultrasonic power is 200W. Wherein, the weight ratio of the rapeseed in the step (1) to the tea leaves and/or tea seed peels in the step (2) is 500:1.

(3) The rapeseed obtained in the step (1) is subjected to the filtrate by means of an atomized watering device, and finally the rapeseed with a water content of 12% is obtained.

(4) The rapeseed obtained in the step (3) is placed in a tempering tower, and the rapeseed is moistened; wherein, the temperature of the rapeseed is 28° C., and the time is 10 hours.

(5) Put the product obtained in the step (4) into a drum seed frying machine, then adjust the temperature of the seed frying machine to 180° C., and then fry the seeds for 60 minutes.

(6) Press the product obtained in the step (5) by using a screw press, centrifuge, then filter and collect the filtrate to obtain Luzhou-flavored rapeseed oil with a benzopyrene content of 1.5 μg/kg.

Example 3

Embodiment 3 proposes a kind of preparation method of fragrant rapeseed oil, comprises the steps:

(1) First use a vibrating sieve to remove impurities, and then use a specific gravity stoner to remove stones to obtain clean rapeseed.

(2) Ultrafine pulverize the tea leaves and/or tea seed peels, then sieve, add soft water according to the solid-liquid ratio of 1g: 6mL, and then perform ultrasonic treatment, then filter and collect the filtrate, the ultrasonic temperature is 40°C, ultrasonic The time is 45min, and the ultrasonic power is 225W.

(3) The rapeseed obtained in the step (1) is subjected to the filtrate by means of an atomized watering device, and finally the rapeseed with a water content of 11% is obtained.

(4) The rapeseed obtained in the step (3) is placed in a tempering tower, and the rapeseed is moistened; wherein, the temperature of the rapeseed is 29° C., and the time is 9 hours.

(5) Put the product obtained in the step (4) into a drum seed frying machine, then adjust the temperature of the seed frying machine to 190° C., and then fry the seeds for 45 minutes.

(6) The product obtained in the step (5) was squeezed by a screw press and then centrifuged, then filtered and the filtrate was collected to obtain Luzhou-flavored rapeseed oil with a benzopyrene content of 1.6 μg/kg.

Example 4

Embodiment 4 proposes a kind of preparation method of fragrant rapeseed oil, comprises the steps:

(1) Firstly, the rapeseed is subjected to impurity removal treatment to obtain clean rapeseed.

(2) Put tea leaves and/or tea seed peels in an extraction tank, then add water for heating and extraction, then filter and collect the filtrate; wherein, the ratio of solid to liquid is 1:2, the extraction temperature is 60°C, and the extraction temperature is 60°C. The extraction time was 2h, then filtered and the filtrate was collected.

(3) The rapeseed obtained in the step (1) is subjected to the filtrate by using an atomization watering device.

(4) The rapeseed obtained in the step (3) is placed in a tempering tower, and the rapeseed is moistened; wherein, the temperature of the rapeseed is 30° C., and the time is 8 hours.

(5) Put the product obtained in the step (4) into a drum seed frying machine, then adjust the temperature of the seed frying machine to 200° C., and then fry the seeds.

(6) Pressing the product obtained in step (5) and then centrifuging, then filtering and collecting the filtrate to obtain fragrant rapeseed oil with a benzopyrene content of 2.0 μg/kg.

Example 5

Embodiment 5 proposes a kind of preparation method of fragrant rapeseed oil, comprises the steps:

(1) Firstly, the rapeseed is subjected to impurity removal treatment to obtain clean rapeseed.

(2) Put the tea leaves and/or tea seed peels in an extraction tank, then add water for heating and extraction, then filter and collect the filtrate; wherein, the ratio of solid to liquid is 1:6, the extraction temperature is 40°C, and the extraction temperature is 40°C. The extraction time was 3h, then filtered and the filtrate was collected.

(3) The rapeseed obtained in the step (1) is subjected to the filtrate by using an atomization watering device.

(4) The rapeseed obtained in the step (3) is placed in a tempering tower, and the rapeseed is moistened; wherein, the temperature of the rapeseed is 28° C., and the time is 10 hours.

(5) Put the product obtained in the step (4) into a drum seed frying machine, then adjust the temperature of the seed frying machine to 180° C., and then fry the seeds.

(6) The product obtained in the step (5) was squeezed and then centrifuged, then filtered and the filtrate was collected to obtain fragrant rapeseed oil with a benzopyrene content of 1.8 μg/kg.

Example 6

Embodiment 6 proposes a kind of preparation method of fragrant rapeseed oil, comprises the steps:

(1) Firstly, the rapeseed is subjected to impurity removal treatment to obtain clean rapeseed.

(2) Put the tea leaves and/or tea seed peels in an extraction tank, then add water for heating and extraction, then filter and collect the filtrate; wherein, the ratio of solid to liquid is 1:4, the extraction temperature is 50°C, and the extraction temperature is 50°C. The extraction time was 2.5h, then filtered and the filtrate was collected.

(3) The rapeseed obtained in the step (1) is subjected to the filtrate by using an atomization watering device.

(4) The rapeseed obtained in the step (3) is placed in a tempering tower, and the rapeseed is moistened; wherein, the temperature of the rapeseed is 29° C., and the time is 9 hours.

(5) Put the product obtained in the step (4) into a drum seed frying machine, then adjust the temperature of the seed frying machine to 190° C., and then fry the seeds.

(6) Centrifuge the product obtained in the step (5) after pressing, then filter and collect the filtrate to obtain fragrant rapeseed oil with a benzopyrene content of 2.2 μg/kg.

Example 7

Embodiment 7 proposes a kind of preparation method of fragrant rapeseed oil, comprises the steps:

(1) Select the rapeseed with a moisture content of 7.5%, and obtain 500 kg of clean rapeseed through processes such as vibrating sieve to remove impurities and specific gravity stoner to remove stone.

(2) Weigh 1 kg of the leaves of Ketian tea leaves and place them in an extraction tank for extraction under the conditions of a solid-to-liquid ratio of 1:6, an extraction temperature of 60°C, and an extraction time of 2 hours, and collect the filtrate.

(3) Using atomized watering equipment, the rapeseeds are subjected to the aqueous extract of Mujiangye Ketian tea. It is required that the water content of the rapeseeds be controlled at 11%. Rapeseed treatment, time to moisten rapeseed: 9 hours at a temperature of 30°C.

(4) Transport the raw materials after moistening the rapeseed to the drum seed frying machine, control the frying temperature at 190°C, and use the scraper conveyor to transport the seed to the screw oil press after 30 minutes of frying time, then press and centrifuge at low temperature to obtain a strong aroma Rapeseed oil, benzopyrene content 1.5μg/kg.

Example 8

Embodiment 8 proposes a kind of preparation method of fragrant rapeseed oil, comprises the steps:

(1) Select rapeseed with a moisture content of 7%, and obtain clean 500kg rapeseed through processes such as vibrating sieve to remove impurities and specific gravity stoner to remove stone.

(2) Weigh 1 kg of tea seed peel and place it in an extraction tank to extract and collect the filtrate under the conditions of a solid-to-liquid ratio of 1:4, an extraction temperature of 60°C, and an extraction time of 2 hours.

(3) Use atomized watering equipment to extract the aqueous solution of tea seed peel on the rapeseed. It is required to control the water content of the rapeseed at 12% after watering, and place the watered rapeseed in the conditioning tower to moisten the vegetables Seed treatment, time for moistening rapeseed: 8 hours at a temperature of 30°C.

(4) Transport the raw materials after moistening the rapeseed to the drum seed frying machine, control the frying temperature at 190°C, and use the scraper conveyor to transport the seed to the screw oil press after 30 minutes of frying time, then press and centrifuge at low temperature to obtain a strong aroma Rapeseed oil, benzopyrene content 2.5μg/kg.

Example 9

Embodiment 9 proposes a kind of preparation method of fragrant rapeseed oil, comprises the steps:

(1) Select rapeseed with a moisture content of 8%, and obtain clean 500kg rapeseed through processes such as vibrating sieve to remove impurities and specific gravity stoner to remove stone.

(2) Weigh 1 kg of Jietan tea and place it in an extraction tank for extraction under the conditions of a solid-to-liquid ratio of 1:5, an extraction temperature of 60°C, and an extraction time of 2 hours, and collect the filtrate.

(3) Using atomization watering equipment, the rapeseeds are soaked in the Jietan tea tea extraction aqueous solution, and the water content of the rapeseeds after watering is required to be controlled at 11%, and the watered rapeseeds are placed in the conditioning tower for moistening Rapeseed treatment, time to moisten rapeseed: 9 hours at a temperature of 30°C.

(4) Transport the raw materials after moistening the rapeseed to the drum seed frying machine, control the frying temperature at 190°C, and use the scraper conveyor to transport the seed to the screw oil press after 30 minutes of frying time, then press and centrifuge at low temperature to obtain a strong aroma Rapeseed oil, benzopyrene content 2.0μg/kg.

Adopt three kinds of methods of preparing fragrant rapeseed oil to compare below:

Method A: use the method of frying seeds at low temperature to produce (without watering and moistening the rapeseed), wherein the water content of the rapeseed is 9%, and the temperature of the seeds is 160°C, and the time for frying the seeds is 30 minutes. deal with.

Method B: the traditional method is used for production (without watering and moistening the rapeseed), wherein the water content of the rapeseed is 9%, and the frying temperature is 190° C., and the frying time is 30 minutes for pressing.

Method C: use the method in Example 3 to extract, wherein the rapeseed has a water content of 9%, and the water content of the rapeseed is 12% after the water and moistening of the rapeseed is carried out with the tea extract of Mujiangyeke sweet tea. The temperature of the fried seeds is 190°C. The pressing process was carried out under the condition of seed time 30min.

The physical and chemical indicators of the strong fragrant rapeseed oil obtained by three kinds of oil production methods are shown in Table 1:

Table 1: Physicochemical indicators of fragrant rapeseed oil obtained by three processing methods

From Table 1, it can be obtained that the fragrant rapeseed oil prepared by method C using this patent not only has a minimum benzopyrene content of 1.5 μg/kg, and a peroxide value of 2 mmol/kg, but also has a rich and mellow flavor, a smooth taste, and the best quality. Good; because the rapeseed oil of method A adopts the low-temperature frying process, the oil flavor is not strong, and the content of benzopyrene is 4 μg/kg; the method B adopts the traditional aroma rapeseed oil production process and high-temperature frying seeds, and the obtained aroma Although rapeseed oil has a rich and mellow flavor, its benzopyrene content is as high as 12 μg/kg, exceeding the national standard of 10 μg/kg.

Randomly select 18 normal adults for the test, divide them into 6 groups on average, eat the food cooked with the fragrant rapeseed oil of the embodiments 1-6 every day, and cook with the fragrant rapeseed oil of 30g every day, for one month Afterwards, the content of cholesterol (TC) and triglyceride (TG) in the test personnel's body was detected. See Table 2 for details.

Table 2: TC and TG contents before and after eating the food cooked with fragrant rapeseed oil in each embodiment

As can be seen from Table 2, after eating the fragrant rapeseed oil cooking food of Examples 1 to 6 of the present invention, the content of cholesterol (TC) and triglyceride (TG) in the tester's body does not increase significantly, especially It is after eating the fragrant rapeseed oil cooking food of embodiment 4-6, the content of cholesterol (TC) and triglyceride (TG) in the tester's body all have obvious decline, illustrate that embodiment 4-6 adopts heating extraction The fragrant rapeseed oil prepared by this method can regulate body functions, lower cholesterol and blood fat, etc.

The preparation method of the fragrant rapeseed oil of the present invention uses discarded tea seed peel as a raw material of tea extract, recycles the tea seed peel, turns waste into wealth, and increases the income of tea growers. Because tea leaves and tea seed peels contain physiologically active substances such as polyphenols and flavonoids, which can inhibit the formation of benzopyrene under high temperature conditions, the tea with strong flavor and smooth taste is produced by the Luzhou-flavored oil-making process (high-temperature fried seeds) At the same time, the fragrant rapeseed oil can make the fragrant rapeseed oil produced by the traditional frying process not contain benzopyrene or the content does not exceed the national standard, making the fragrant rapeseed oil natural, green and healthy.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (9)

1. a kind of preparation method of giving off a strong fragrance rapeseed oil, it is characterised in that comprise the following steps：

S101：Vegetable seed is subjected to removal of impurities processing first, obtains clean vegetable seed；

S102：Tealeaves and/or tea seeds pericarp are handled by ultramicro grinding, then sieves, is 1g according still further to solid-liquid ratio：(4mL ~8mL) add soft water after be ultrasonically treated, then filter and collect filtrate；

S103：The vegetable seed that the step S101 is obtained carries out the filtrate using atomizing-dampening system equipment to it；

S104：The obtained vegetable seed of the step S103 is positioned in tempering tower, carries out moistening vegetable seed processing；Wherein, vegetable seed temperature is moistened Spend for 28 DEG C~30 DEG C, the time is 8h~10h；

S105：The obtained products of the step S104 are put into roller seeds frying machine, the temperature for then adjusting the seeds frying machine is After 180 DEG C~200 DEG C, stir-fry seed is carried out；

S106：Centrifuged after the obtained products of the step S105 are carried out into squeezing processing, then filter and collect filtrate, obtain To giving off a strong fragrance rapeseed oil.

2. a kind of preparation method of giving off a strong fragrance rapeseed oil, it is characterised in that comprise the following steps：

S101：Vegetable seed is subjected to removal of impurities processing first, obtains clean vegetable seed；

S102：Tealeaves and/or tea seeds pericarp are placed in pot for solvent extraction, water is then added and carries out heating extraction, then filter simultaneously Collect filtrate；Wherein, solid-liquid ratio 1:(2~6), extraction temperature are 40 DEG C~60 DEG C, and extraction time is 2h~3h, is then filtered And collect filtrate；

S103：The vegetable seed that the step S101 is obtained carries out the filtrate using atomizing-dampening system equipment to it；

S104：The obtained vegetable seed of the step S103 is positioned in tempering tower, carries out moistening vegetable seed processing；Wherein, vegetable seed temperature is moistened Spend for 28 DEG C~30 DEG C, the time is 8h~10h；

S105：The obtained products of the step S104 are put into roller seeds frying machine, the temperature for then adjusting the seeds frying machine is After 180 DEG C~200 DEG C, stir-fry seed is carried out；

S106：Centrifuged after the obtained products of the step S105 are carried out into squeezing processing, then filter and collect filtrate, obtain To giving off a strong fragrance rapeseed oil.

3. the preparation method of giving off a strong fragrance rapeseed oil according to claim 1 or 2, it is characterised in that in the step S106, Squeezing processing is carried out using screw oil expeller.

4. the preparation method of giving off a strong fragrance rapeseed oil according to claim 1 or 2, it is characterised in that in the step S101, The removal of impurities processing comprises the following steps：Using vibratory sieve impurity elimination, then stone is removed with specific-gravity stoner.

5. the preparation method of giving off a strong fragrance rapeseed oil according to claim 1 or 2, it is characterised in that in the step S105, The stir-fry seed time is 30min~60min.

6. the preparation method of giving off a strong fragrance rapeseed oil according to claim 1 or 2, it is characterised in that the step S103 is obtained The vegetable seed moisture be 10%~12%.

7. the preparation method of giving off a strong fragrance rapeseed oil according to claim 1, it is characterised in that in the step S102, surpass Sound temperature is 30 DEG C~50 DEG C, and ultrasonic time is 30min~60min, and ultrasonic power is 200W~250W.

8. the preparation method of giving off a strong fragrance rapeseed oil according to claim 1 or 2, it is characterised in that in the step S101 Vegetable seed is 500 with the tealeaves in the step S102 and/or the weight ratio of tea seeds pericarp:1.

9. giving off a strong fragrance rapeseed oil prepared by the method described in claim any one of 1-8.