Method for shortening oil extraction time by water displacement method and increasing oil yield by water displacement method

Abstract

The present invention relates to a method for shortening the oil extraction time by the water displacement method and / or increasing the oil yield by the water displacement method. The method includes steps of grinding, slurry mixing, and oil separation. Among them, the reaction system for slurry mixing contains the material obtained by grinding, the enzyme reaction residue of oil seeds, and boiling water; wherein, the oil seeds are the same type of oil seeds as those used for grinding. By using the method of the present invention, the oil extraction time by the water displacement method can be shortened and / or the oil yield by the water displacement method can be increased.

Description

Technical Field

[0001] The present invention relates to a method for shortening the oil extraction time by the water displacement method and increasing the oil yield by the water displacement method. Background Art

[0002] The main methods for producing vegetable oils at home and abroad are mainly 4 types: pressing method, aqueous enzymatic method, leaching method, and water displacement method. The production of vegetable oil by the water displacement method utilizes the different affinities of non-oil components in oilseeds for oil and water, as well as the different specific gravities of oil and water to separate oil and water.

[0003] Sesame has a cultivation history of more than two thousand years in China and is one of the important oil crops. Sesame oil is derived from sesame and is also known as sesame oil and sesame seed oil, which is a traditional Chinese flavor vegetable oil. Among them, the sesame oil processed by the water displacement method is called small mill sesame oil. Its oil extraction process has the advantages of low operating temperature and less loss of nutritional components and flavor substances, and it is a traditional and unique oil extraction method in China. The unsaturated fatty acids contained in small mill sesame oil can prevent the formation of cerebral thrombosis, coronary heart disease, and arteriosclerosis. In particular, the vitamin E contained in it is an anti-aging substance proved by medical and nutrition experts. Long-term consumption of small mill sesame oil can strengthen the heart, boost qi, and prolong life.

[0004] The production of small mill sesame oil has been started since the Spring and Autumn Period. Its traditional original processing mode of washing, frying seeds, grinding pulp, blending pulp, stirring oil, settling oil, and swirling oil has been used until now. This process makes small mill sesame oil have a unique flavor and is highly favored by the industry. However, the processing characteristics of this process are time-consuming, low output, and low production efficiency.

[0005] At present, there are also many studies on small mill sesame oil in the literature, which mainly focus on process condition research, flavor analysis, quality comparison, and hemp residue treatment. Liu Yulan et al. compared the qualities of sesame oils obtained by the water displacement method, hydraulic pressing method, and screw pressing method using black sesame and white sesame as raw materials (Liu Yulan, Chen Liuyang, Wang Xuede, et al., Influence of sesame variety and oil extraction process on the quality of sesame oil [J], China Oils and Fats, 2010, 35(2): 6-10). Shang Xiaolei studied the rheological properties of sesame paste and the blending pulp process in the water displacement method (Shang Xiaolei, Study on the colloidal stability of sesame paste and the blending pulp process in the water displacement method [D], Henan University of Technology, master's thesis, 2013). Dai Liping et al. studied small mill hemp residue, and provided a feasible way for the utilization of hemp residue by extracting oil and removing water from the hemp residue and then granulating and drying it (Dai Liping, Ma Changnian, Research on the oil extraction and drying process and equipment of small mill hemp residue [J], China Oils and Fats, 2001, 26(1): 55-56). CN202011165429.8 discloses a production process of small mill sesame oil. CN201911302514.1 discloses a preparation method of small mill sesame oil, which improves the production speed and the obtained oil product has high purity. Summary of the Invention

[0006] In the first aspect of the present invention, a method for shortening the oil extraction time by the water displacement method and / or increasing the oil yield by the water displacement method is provided. The method includes steps of grinding, mixing slurries, and separating and extracting oil. Among them, the reaction system for mixing slurries contains the material obtained from grinding, the enzyme reaction residue of oil seeds, and boiling water; wherein, the oil seeds are the same type of oil seeds as those used for grinding.

[0007] In the second aspect of the present invention, there is provided the use of oil seed residue in reducing the oil extraction time by the water displacement method and / or increasing the oil yield by the water displacement method, or the use in preparing a material for reducing the oil extraction time by the water displacement method and / or increasing the oil yield by the water displacement method.

[0008] In one or more embodiments of the first and second aspects, the oil seeds are selected from: rice, sunflower seeds, peanuts, soybeans, rapeseeds, cottonseeds, safflower seeds, perilla seeds, tea seeds, cocoa beans, Chinese tallow tree seeds, almond kernels, almonds, tung tree seeds, rubber seeds, rice bran, corn, wheat germ, castor, flaxseeds, evening primrose seeds, hazelnuts, walnuts, English walnuts, grape seeds, sesame seeds, borage seeds, sea buckthorn seeds, tomato seeds, pumpkin seeds, or macadamia nuts.

[0009] In one or more embodiments of the first and second aspects, the enzyme reaction residue is the residue of oil seeds obtained after removing water, oil-soluble and water-soluble components by enzymatic oil extraction from the oil seeds.

[0010] In one or more embodiments of the first and second aspects, the enzymatic oil extraction includes mixing oil seeds and the oil produced from the oil seeds, performing an enzymatic hydrolysis reaction in the presence of a protease, performing a high-temperature heat treatment after the enzymatic hydrolysis reaction is completed, and separating the oil seed residue after the high-temperature heat treatment is completed.

[0011] In one or more embodiments of the first and second aspects, the protease is selected from alkaline protease, flavor protease, or a mixture thereof.

[0012] In one or more embodiments of the first and second aspects, the dosage of the protease is 0.1-2% of the weight of the oil seeds.

[0013] In one or more embodiments of the first and second aspects, the dosage of the protease is 0.3-1% of the weight of the oil seeds.

[0014] In one or more embodiments of the first and second aspects, the temperature of the enzymatic hydrolysis reaction is 40-60°C.

[0015] In one or more embodiments of the first and second aspects, the pH of the enzymatic hydrolysis reaction system is 6.5-8.5.

[0016] In one or more embodiments of the first and second aspects, in the enzymatic hydrolysis reaction system, the weight ratio of the oilseed to the oil is 1:1 to 1:5.

[0017] In one or more embodiments of the first and second aspects, the temperature of the high-temperature heat treatment is 160 - 220 °C.

[0018] In one or more embodiments of the first and second aspects, the temperature of the high-temperature heat treatment is 180 - 200 °C.

[0019] In one or more embodiments of the first and second aspects, the oilseed residue is separated by centrifugation.

[0020] In one or more embodiments of the first and second aspects, in the reaction system of slurry mixing, the dosage of the enzymatic reaction residue is 1 - 15% of the weight of the oilseed.

[0021] In one or more embodiments of the first and second aspects, in the reaction system of slurry mixing, the dosage of the enzymatic reaction residue is 3 - 15% of the weight of the oilseed.

[0022] In one or more embodiments of the first and second aspects, in the reaction system of slurry mixing, the dosage of the enzymatic reaction residue is 5 - 15% of the weight of the oilseed.

[0023] In one or more embodiments of the first and second aspects, in the reaction system of slurry mixing, the dosage of the enzymatic reaction residue is 1 - 10% of the weight of the oilseed.

[0024] In one or more embodiments of the first and second aspects, in the reaction system of slurry mixing, the weight ratio of boiling water to the material (slurry) is 0.8:1 to 1.5:1.

[0025] In one or more embodiments of the first and second aspects, in the reaction system of slurry mixing, the weight ratio of boiling water to the material (slurry) is 1:1 to 1.2:1.

[0026] In one or more embodiments of the first and second aspects, the slurry mixing time is 0.5 - 2 hours.

[0027] In one or more embodiments of the first and second aspects, the slurry mixing time is 50 - 80 minutes.

[0028] In one or more embodiments of the first and second aspects, the step of separating the oil includes, after the slurry mixing is completed, separating the oil layer, then stirring for 0.5 - 2 hours, and then shaking the oil for 1 - 4 hours, and then separating the oil layer.

[0029] In one or more embodiments of the first and second aspects, the total duration from slurry blending to the end of oil shaking does not exceed 4 hours.

[0030] The third aspect of the present invention provides a method for preparing small mill sesame oil, which method includes steps of grinding slurry, blending slurry, and separating out oil, wherein, the reaction system for slurry blending contains sesame slurry obtained from grinding slurry, enzyme reaction residue of sesame, and boiling water.

[0031] The fourth aspect of the present invention provides the application of sesame residue in reducing the preparation time of small mill sesame oil and / or increasing the oil yield of small mill sesame oil, or the application in preparing a material for reducing the preparation time of small mill sesame oil and / or increasing the oil yield of small mill sesame oil.

[0032] In one or more embodiments of the third and fourth aspects of the present invention, the enzyme reaction residue is sesame residue obtained after removing water, oil-soluble and water-soluble components from sesame by enzymatic oil extraction.

[0033] In one or more embodiments of the third and fourth aspects of the present invention, the enzymatic oil extraction includes mixing sesame and sesame oil, performing an enzymatic hydrolysis reaction in the presence of a protease, performing a high-temperature heat treatment after the enzymatic hydrolysis reaction ends, and separating out the sesame residue after the high-temperature heat treatment ends.

[0034] In one or more embodiments of the third and fourth aspects of the present invention, the protease is selected from alkaline protease, flavor protease or a mixture thereof.

[0035] In one or more embodiments of the third and fourth aspects of the present invention, the dosage of the protease is 0.1-2% of the weight of sesame.

[0036] In one or more embodiments of the third and fourth aspects of the present invention, the dosage of the protease is 0.3-1% of the weight of sesame.

[0037] In one or more embodiments of the third and fourth aspects of the present invention, the temperature of the enzymatic hydrolysis reaction is 40-60 °C.

[0038] In one or more embodiments of the third and fourth aspects of the present invention, the pH of the enzymatic hydrolysis reaction system is 6.5-8.5.

[0039] In one or more embodiments of the third and fourth aspects of the present invention, in the enzymatic hydrolysis reaction system, the weight ratio of sesame to sesame oil is 1:1 to 1:5.

[0040] In one or more embodiments of the third and fourth aspects of the present invention, the temperature of the high-temperature heat treatment is 160-220 °C.

[0041] In one or more embodiments of the third and fourth aspects of the present invention, the temperature of the high-temperature heat treatment is 180-200 °C.

[0042] In one or more embodiments of the third and fourth aspects of the present invention, the sesame residue is centrifuged out.

[0043] In one or more embodiments of the third and fourth aspects of the present invention, in the reaction system of slurry mixing, the dosage of the enzyme reaction residue is 1-15% of the weight of sesame.

[0044] In one or more embodiments of the third and fourth aspects of the present invention, in the reaction system of slurry mixing, the dosage of the enzyme reaction residue is 3-15% of the weight of sesame.

[0045] In one or more embodiments of the third and fourth aspects of the present invention, in the reaction system of slurry mixing, the dosage of the enzyme reaction residue is 5-15% of the weight of sesame.

[0046] In one or more embodiments of the third and fourth aspects of the present invention, in the reaction system of slurry mixing, the dosage of the enzyme reaction residue is 1-10% of the weight of sesame.

[0047] In one or more embodiments of the third and fourth aspects of the present invention, in the reaction system of slurry mixing, the weight ratio of boiling water to sesame slurry is 0.8:1 to 1.5:1.

[0048] In one or more embodiments of the third and fourth aspects of the present invention, in the reaction system of slurry mixing, the weight ratio of boiling water to sesame slurry is 1:1 to 1.2:1.

[0049] In one or more embodiments of the third and fourth aspects of the present invention, the slurry mixing time is 0.5-2 hours.

[0050] In one or more embodiments of the third and fourth aspects of the present invention, the slurry mixing time is 50-80 minutes.

[0051] In one or more embodiments of the third and fourth aspects of the present invention, the steps of separating oil include, after the slurry mixing is completed, separating the oil layer, then stirring for 0.5-2 hours, and then shaking the oil for 1-4 hours, and separating the oil layer.

[0052] In one or more embodiments of the third and fourth aspects of the present invention, the total duration from slurry mixing to the end of oil shaking does not exceed 4 hours.

[0053] The fifth aspect of the present invention provides a method for preparing oil and fat by the water substitution method. The method includes the steps of preparing oil and fat by any one of the methods described in the first aspect or the third aspect of the present invention, and the step of post-treating the oil and fat; preferably, the post-treatment step includes one or more of degumming, deacidification, decolorization, deodorization, and dewaxing; preferably, the oil and fat is sesame oil.

[0054] The sixth aspect of the present invention provides a method for preparing an oil and fat composition or a blended oil, including the step of mixing the oil and fat prepared by the method described in the fifth aspect of the present invention with a base oil.

[0055] In one or more embodiments, the base oil is preferably an animal oil and / or a vegetable oil. The animal oil is preferably one or more of lard, beef tallow, chicken and duck fat. The vegetable oil preferably originates from rice, sunflower seeds, peanuts, soybeans, rapeseeds, cottonseeds, safflower seeds, perilla seeds, tea seeds, cocoa beans, Chinese tallow tree seeds, almonds, apricot kernels, tung tree seeds, rubber seeds, rice bran, corn, wheat germ, sesame, castor, flaxseed, evening primrose seeds, hazelnuts, walnuts, grape seeds, sesame seeds, borage seeds, sea buckthorn seeds, tomato seeds, pumpkin seeds, and macadamia nuts.

[0056] The seventh aspect of the present invention provides an oil and fat prepared by the method described in the fifth aspect of the present invention, an oil and fat composition or a blended oil containing the oil and fat.

[0057] The eighth aspect of the present invention provides the application of oilseed residue in reducing the oil extraction time by the water substitution method and / or increasing the oil yield by the water substitution method, or the application in preparing a material for reducing the oil extraction time by the water substitution method and / or increasing the oil yield by the water substitution method.

[0058] In one or more embodiments, the oilseed residue is an enzyme reaction residue obtained by removing water, oil-soluble and water-soluble components after enzymatic oil extraction of the oilseed; preferably, the oilseed is selected from: rice, sunflower seeds, peanuts, soybeans, rapeseeds, cottonseeds, safflower seeds, perilla seeds, tea seeds, cocoa beans, Chinese tallow tree seeds, almonds, apricot kernels, tung tree seeds, rubber seeds, rice bran, corn, wheat germ, sesame, castor, flaxseed, evening primrose seeds, hazelnuts, walnuts, grape seeds, sesame seeds, borage seeds, sea buckthorn seeds, tomato seeds, pumpkin seeds, and macadamia nuts, preferably sesame, peanuts or rapeseeds, and more preferably sesame;

[0059] In one or more embodiments, the oilseed is subjected to enzymatic oil extraction by the enzymatic oil extraction method described in any embodiment herein. Detailed Embodiments

[0060] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as in the examples) can be combined with each other to form a preferred technical solution.

[0061] In the research on the preparation method of small mill sesame oil, the inventor found that adding sesame residue to sesame pulp, although the total oil content in the raw materials (sesame + sesame residue) increased, not only could not improve the oil yield of the finally obtained sesame oil, but on the contrary, the oil yield was lower than that obtained by extracting oil only from sesame pulp. Further research found that if the enzyme reaction residue of sesame after removing the oil was added to the sesame pulp, it could accelerate the oil extraction in the slurry mixing process of the small mill, improve the oil yield, and greatly enhance the production efficiency.

[0062] In this article, small mill sesame oil refers to sesame oil processed by the water displacement method, and its oil production process has the advantages of low operating temperature, less loss of nutrients and flavor substances.

[0063] The feature of the method for preparing small mill sesame oil of the present invention is that after the grinding step, an appropriate amount of the enzyme reaction residue of sesame is first added to the slurry, and after mixing, hot water is added for slurry mixing. Therefore, the method for preparing small mill sesame oil of the present invention includes grinding, adding the enzyme reaction residue of sesame to the slurry obtained by grinding, and adding hot water for slurry mixing after mixing.

[0064] In the present invention, the enzyme reaction residue is the sesame residue remaining after sesame is processed by the enzymatic method to extract oil and remove water, oil-soluble and water-soluble substances.

[0065] The enzyme can be various enzymes conventionally used in the art for the enzymatic production of sesame oil, such as alkaline protease and / or flavor protease. The required protease can be obtained through commercial channels. When using a mixture of two or more proteases, there is no special limitation on the dosage ratio of each enzyme in the mixture. For example, it can be in equal proportion. The total dosage of the enzyme is usually 0.1 - 2% of the weight of sesame. In some embodiments, the total dosage of the enzyme is 0.3 - 1% of the weight of sesame. In some other embodiments, the total dosage of the enzyme is 0.5 - 0.8% of the weight of sesame.

[0066] The temperature of the enzyme reaction and the pH value of the reaction system can be determined according to the optimal reaction temperature and optimal reaction pH value of the selected enzyme. Generally, the temperature of the enzyme reaction is between 40 - 60°C, and the pH value of the reaction system can be between 6.5 - 8.5.

[0067] In some embodiments, sesame seeds are mixed with sesame oil to obtain a reaction system. After adjusting the temperature and pH value of the reaction system, an appropriate amount of enzyme is added for reaction. After the reaction is completed, the obtained enzymatic hydrolysate is subjected to heat treatment, and the oil residue mixture obtained from the heat treatment is separated to obtain a solid substance, namely the sesame residue (enzyme reaction residue) used herein. The sesame seeds mixed with sesame oil can be pre-ground or ground after being mixed with sesame oil. The weight ratio of sesame seeds to sesame oil can be from 1:1 to 1:5, such as from 1:2 to 1:4. There is no special limitation on the reaction time of the enzyme, which can be judged according to the degree of hydrolysis. However, when the degree of hydrolysis no longer changes, it indicates that the reaction is completed. For example, the reaction time can be 1-8 hours. In this article, the temperature of the heat treatment can be 160-220 °C, such as 180-200 °C. The time of the heat treatment can be 1-3 hours. The sesame residue in the oil residue mixture can be separated by centrifugation.

[0068] The sesame oil can be refined sesame oil or the sesame oil obtained from each section in the process of preparing sesame oil.

[0069] In some embodiments, the sesame enzyme reaction residue or sesame residue used in the present invention is prepared as follows: sesame seeds and sesame oil are mixed at a weight ratio of 1:1 to 1:5 to obtain a reaction system. The temperature and pH value of the reaction system are adjusted to the reaction temperature and pH value of the enzyme. After reacting for 1-8 hours, the obtained reaction mixture is subjected to heat treatment at 150-220 °C. After the heat treatment is completed, the solid substance is separated, which is the sesame enzyme reaction residue or sesame residue.

[0070] In the present invention, the addition amount of the enzyme reaction residue of sesame seeds can be 1-15% of the weight of the sesame paste. In some embodiments, the addition amount of the enzyme reaction residue of sesame seeds is 3-15% of the weight of the sesame paste. In some embodiments, the addition amount of the enzyme reaction residue of sesame seeds is 5-15% of the weight of the sesame paste. In some embodiments, the addition amount of the enzyme reaction residue of sesame seeds is 7-12% of the weight of the sesame paste. In some embodiments, the addition amount of the enzyme reaction residue of sesame seeds is 1-10% of the weight of the sesame paste. In some embodiments, the addition amount of the enzyme reaction residue of sesame seeds is 3-10% of the weight of the sesame paste.

[0071] In the method for preparing small mill sesame oil of the present invention, the sesame raw materials can be cleaned, impurity-removed, washed, dried, roasted, cooled and ground into paste according to conventional methods. In some embodiments, the roasting temperature is 180-230 °C. In some embodiments, the roasting temperature is 200-220 °C. After roasting, it is usually cooled to 40-60 °C, such as about 50 °C, for grinding into paste.

[0072] In the present invention, the slurry mixing system contains sesame slurry obtained by grinding sesame, the enzymatic reaction residue of sesame as described herein, and boiling water. There is no special limitation on the mixing order of the three. For example, the enzymatic reaction residue can be first added to the sesame slurry, stirred evenly and then boiling water is added, or the enzymatic reaction residue and boiling water can be added simultaneously. Adequate stirring is carried out during the slurry mixing process. The amount of boiling water used for slurry mixing is usually 0.8 - 1.5 times the weight of the sesame slurry. In some embodiments, the weight ratio of boiling water to sesame slurry is 1:1 to 1:1.2. The time for slurry mixing is usually controlled within 0.5 - 2 hours and can be determined according to the actual production situation. In some embodiments, the slurry mixing time is 50 - 80 minutes.

[0073] After the slurry mixing is completed, the oil layer is separated, and then stirring is continued for 0.5 - 2 hours. In some embodiments, stirring is continued for 50 - 80 minutes. Then oil shaking is carried out, and the oil shaking time is usually 1 - 4 hours. In some embodiments, the oil shaking time is 1 - 2 hours or 2 - 4 hours. After the oil shaking is completed, the oil layer is obtained and mixed with the previously obtained oil to obtain the small mill sesame oil described in the present invention. When needed, the obtained oil can be filtered.

[0074] In a preferred embodiment, in the method of the present invention, the total time from the start of slurry mixing to the end of oil shaking does not exceed 4 hours.

[0075] The method for preparing small mill sesame oil of the present invention can accelerate the floating of sesame oil during the slurry mixing and oil stirring process by adding the enzymatic reaction oil residue of sesame, shortening the entire oil production process by 2 - 3 hours, greatly improving the production efficiency, and at the same time increasing the oil yield (oil extraction rate) by more than 1%. In some other embodiments, although the oil production time is not shortened, the oil yield is also significantly increased.

[0076] Therefore, the present invention also provides the application of sesame residue in shortening the oil production time of small mill sesame oil prepared by the water displacement method and / or increasing the oil extraction rate of small mill sesame oil prepared by the water displacement method, or the application in preparing materials for shortening the oil production time of small mill sesame oil prepared by the water displacement method and / or increasing the oil extraction rate of small mill sesame oil prepared by the water displacement method. Preferably, the sesame residue is as described in any embodiment herein.

[0077] In the slurry mixing process of the present invention, the enzyme reaction residue of oil seeds, the material obtained by grinding, and boiling water are mixed to shorten the time of oil extraction or oil production by the water displacement method and / or improve the oil yield. This slurry mixing method can also be used in the method of producing other oils by the water displacement method. The oil seeds that produce the enzyme reaction residue are the same type of oil seeds as the oil seeds for grinding or the oil seeds used to prepare the oil. For example, when rapeseed oil is prepared by the water displacement method, the enzyme reaction residue is the enzyme reaction residue of rapeseed, and the material obtained by grinding is the material (slurry) obtained by grinding rapeseed. Exemplary oil seeds can be oil seeds used to prepare rice bran oil, sunflower oil, peanut oil, soybean oil, rapeseed oil, cottonseed oil, safflower oil, perilla oil, tea seed oil, cocoa butter, Chinese tallow tree seed oil, almond oil, apricot kernel oil, tung oil tree seed oil, rubber seed oil, rice bran oil, corn oil, wheat germ oil, sesame oil, castor oil, linseed oil, evening primrose oil, hazelnut oil, walnut oil, grape seed oil, sesame oil, borage oil, sea buckthorn oil, tomato seed oil, pumpkin seed oil or macadamia nut oil, that is, they can be rice, sunflower seeds, peanuts, soybeans, rapeseeds, cottonseeds, safflower seeds, perilla seeds, tea seeds, cocoa beans, Chinese tallow tree seeds, almonds, apricot kernels, tung tree seeds, rubber seeds, rice bran, corn, wheat germ, sesame, castor, linseed, evening primrose seeds, hazelnuts, walnuts, grape seeds, sesame seeds, borage seeds, sea buckthorn seeds, tomato seeds, pumpkin seeds or macadamia nuts. For different oil seeds, different enzymes can be selected for reaction. After producing oil by the enzymatic method, the enzyme reaction residue of the corresponding oil seeds is obtained and used in the slurry mixing process of the present invention. Other steps and process conditions in the water displacement method can be referred to the foregoing and appropriately adjusted according to the specific oil seeds used.

[0078] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. The experimental methods without specific conditions noted in the following embodiments are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers. Unless otherwise specified, percentages and parts are calculated by weight.

[0079] In the following examples and comparative examples, the oil yield = total oil weight / (sesame slurry weight × oil content in the slurry).

[0080] The enzyme reaction residue used in the following examples was prepared as follows:

[0081] Preparation Example 1

[0082] After cleaning and removing impurities from the sesame raw materials, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 minutes, they are placed in an enzymolysis tank. The stirring is slowly started. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 8.5, and then 0.6% (by weight of sesame) of alkaline protease is added and reacted for 6 hours. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 190 °C for 1 hour to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0083] Preparation Example 2

[0084] After cleaning and removing impurities from the sesame raw materials, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:2 (w / w). After pulverizing for 2 minutes, they are placed in an enzymolysis tank. The stirring is slowly started. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 8.5, and then 0.6% (by weight of sesame) of alkaline protease is added and reacted for 6 hours. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 190 °C for 1 hour to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0085] Preparation Example 3

[0086] After cleaning and removing impurities from the sesame raw materials, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:4 (w / w). After pulverizing for 2 minutes, they are placed in an enzymolysis tank. The stirring is slowly started. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 8.5, and then 0.6% (by weight of sesame) of alkaline protease is added and reacted for 6 hours. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 190 °C for 1 hour to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0087] Preparation Example 4

[0088] After cleaning and removing impurities from the sesame raw materials, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 minutes, they are placed in an enzymolysis tank. The stirring is slowly started. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 8.5, and then 0.5% (by weight of sesame) of alkaline protease is added and reacted for 6 hours. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 190 °C for 1 hour to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0089] Preparation Example 5

[0090] After the sesame raw materials are cleaned and impurities are removed, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 min, they are placed in an enzymolysis tank. The stirring is started slowly. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 8.5, and then 0.7% (by weight of sesame) of alkaline protease is added and reacted for 6 h. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 190 °C for 1 h to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0091] Preparation Example 6

[0092] After the sesame raw materials are cleaned and impurities are removed, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 min, they are placed in an enzymolysis tank. The stirring is started slowly. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 8.5, and then 0.6% (by weight of sesame) of alkaline protease is added and reacted for 6 h. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 180 °C for 1 h to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0093] Preparation Example 7

[0094] After the sesame raw materials are cleaned and impurities are removed, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 min, they are placed in an enzymolysis tank. The stirring is started slowly. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 8.5, and then 0.6% (by weight of sesame) of alkaline protease is added and reacted for 6 h. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 200 °C for 1 h to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0095] Preparation Example 8

[0096] After the sesame raw materials are cleaned and impurities are removed, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 min, they are placed in an enzymolysis tank. The stirring is started slowly. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 6.5, and then 0.6% (by weight of sesame) of flavor protease is added and reacted for 6 h. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 190 °C for 1 h to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0097] Preparation Example 9

[0098] After the sesame raw materials are cleaned and impurities are removed, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 minutes, they are placed in an enzymolysis tank. The stirring is started slowly. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 7.0, and then neutral protease 0.6% (by weight of sesame) is added, and the reaction proceeds for 6 hours. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 190 °C for 1 hour to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0099] Preparation Example 10

[0100] After the sesame raw materials are cleaned and impurities are removed, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 minutes, they are placed in an enzymolysis tank. The stirring is started slowly. After the temperature in the tank rises to 50 °C, the pH value of the system is adjusted to 7.5, and then protease 0.6% (by weight of sesame, alkaline protease and flavor protease are compounded at a ratio of 1:1) is added, and the reaction proceeds for 6 hours. The obtained enzymolysis solution is transferred to a high-pressure reactor and reacted at 190 °C for 1 hour to obtain a mixture of oil residue after the enzyme reaction. It is centrifuged at 8000 r / min to remove oil, water, oil-soluble and water-soluble substances, and the enzyme reaction residue is obtained.

[0101] Comparative Example 1

[0102] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 210 °C and then discharged. After removing the smoke and cooling to 50 °C, they are ground into a pulp. 120 kg of the pulp is transferred to a pulp mixing pot, and 120 kg of boiling water is added for pulp mixing. After stirring thoroughly for 1 hour, an oil layer floats out. This oil layer is taken out and the oil weight is recorded as 21.2 kg. After continuing to stir for 1 hour, the oil shaking mode is started. After shaking the oil for 4 hours, an oil layer floats out. This oil layer is taken out and the oil weight is recorded as 38.7 kg; the total oil output is 59.9 kg, and the oil yield is 86.06%.

[0103] Comparative Example 2

[0104] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 210 °C and then discharged. After removing the smoke and cooling to 50 °C, they are ground into a pulp. 120 kg of the pulp is transferred to a pulp mixing pot, 3.6 kg of sesame cake powder (3% of the weight of the sesame pulp) is added and mixed thoroughly with the sesame pulp, and then 120 kg of boiling water is added for pulp mixing. After stirring thoroughly for 1 hour, an oil layer floats out. This oil layer is taken out and the oil weight is recorded as 19.9 kg. After continuing to stir for 1 hour, the oil shaking mode is started. After shaking the oil for 4 hours, an oil layer floats out. This oil layer is taken out and the oil weight is recorded as 37.9 kg; the total oil output is 57.8 kg, and the oil yield is 83.05%.

[0105] Preparation method of sesame cake powder used in this comparative example: After cleaning the sesame raw materials, roast them to 210 °C, press to remove the oil, collect the obtained sesame cake, and pulverize it to obtain sesame cake powder. The oil content of the sesame cake powder is 8.3%.

[0106] Comparative Example 3

[0107] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and fed into a roasting furnace for high-temperature roasting to 210 °C for discharging. The smoke is removed and cooled to 50 °C, then ground into slurry. Take 120 kg of the slurry and transfer it to a slurry mixing pot, add 3.6 kg of sesame meal (accounting for 3% of the weight of the sesame slurry), and stir it evenly with the sesame slurry. Then add 120 kg of boiling water for slurry mixing. After stirring for 1 h, the oil layer floats out. Take out this oil layer and record the oil weight as 20.9 kg. Continue to stir for 1 h and then start the oil shaking mode. After shaking the oil for 4 h, the oil layer floats out. Take out this oil layer and record the oil weight as 37.5 kg; the total oil output is 58.4 kg, and the oil yield is 83.9%.

[0108] Preparation method of the sesame meal used in this comparative example: After cleaning the sesame raw materials, roast them to 210 °C, press to remove the oil, collect the obtained sesame cake, repeatedly wash it with acetone to remove the oil, evaporate the acetone to obtain sesame meal, and pulverize it. The oil content of the sesame meal is 0%.

[0109] Example 1

[0110] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and fed into a roasting furnace for high-temperature roasting to 210 °C for discharging. The smoke is removed and cooled to 50 °C, then ground into slurry. Take 120 kg of the slurry and transfer it to a slurry mixing pot, add 1.2 kg of enzyme reaction residue (accounting for 1% of the weight of the sesame slurry), and stir it evenly with the sesame slurry. Then add 120 kg of boiling water for slurry mixing. After stirring for 1 h, the oil layer floats out. Take out this oil layer and record the oil weight as 21.7 kg. Continue to stir for 1 h and then start the oil shaking mode. After shaking the oil for 4 h, the oil layer floats out. Take out this oil layer and record the oil weight as 38.8 kg; the total oil output is 60.5 kg, and the oil yield is 86.93%.

[0111] Example 2

[0112] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and fed into a roasting furnace for high-temperature roasting to 210 °C for discharging. The smoke is removed and cooled to 50 °C, then ground into slurry. Take 120 kg of the slurry and transfer it to a slurry mixing pot, add 3.6 kg of enzyme reaction residue (accounting for 3% of the weight of the sesame slurry), and stir it evenly with the sesame slurry. Then add 120 kg of boiling water for slurry mixing. After stirring for 1 h, the oil layer floats out. Take out this oil layer and record the oil weight as 23.7 kg. Continue to stir for 1 h and then start the oil shaking mode. After shaking the oil for 4 h, the oil layer floats out. Take out this oil layer and record the oil weight as 38.1 kg; the total oil output is 61.4 kg, and the oil yield is 88.21%.

[0113] Example 3

[0114] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 210°C and then discharged. After removing the smoke and cooling to 50°C, they are ground into slurry. 120 kg of the slurry is transferred to a slurry mixing pot, and 6 kg (5% of the weight of the sesame slurry) of enzyme reaction residue is added and thoroughly stirred and mixed with the sesame slurry. Then, 120 kg of boiling water is added for slurry mixing. After thorough stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 25.7 kg. After continuing to stir for 1 h, the oil shaking mode is started. After 4 h of oil shaking, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 36.3 kg; the total oil output is 62.0 kg, and the oil yield is 89.08%.

[0115] Example 4

[0116] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 210°C and then discharged. After removing the smoke and cooling to 50°C, they are ground into slurry. 120 kg of the slurry is transferred to a slurry mixing pot, and 12 kg of enzyme reaction residue (10% of the weight of the sesame slurry) is added and thoroughly stirred and mixed with the sesame slurry. Then, 120 kg of boiling water is added for slurry mixing. After thorough stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 28.5 kg. After continuing to stir for 1 h, the oil shaking mode is started. After 4 h of oil shaking, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 35.0 kg; the total oil output is 63.5 kg, and the oil yield is 91.24%.

[0117] Example 5

[0118] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 210°C and then discharged. After removing the smoke and cooling to 50°C, they are ground into slurry. 120 kg of the slurry is transferred to a slurry mixing pot, and 18 kg of enzyme reaction residue (15% of the weight of the sesame slurry) is added and thoroughly stirred and mixed with the sesame slurry. Then, 120 kg of boiling water is added for slurry mixing. After thorough stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 31.5 kg. After continuing to stir for 1 h, the oil shaking mode is started. After 4 h of oil shaking, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 32.3 kg; the total oil output is 63.8 kg, and the oil yield is 91.67%.

[0119] Comparative Example 4

[0120] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until they are discharged at 210°C. After fuming and cooling to 50°C, they are ground into slurry. 120 kg of the slurry is transferred to a slurry mixing pot, and 12 kg of cellulose enzyme reaction residue (accounting for 10% of the sesame slurry weight) is added and thoroughly stirred and mixed with the sesame slurry. Then, 120 kg of boiling water is added for slurry mixing. After thorough stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 22.0 kg. After continuing to stir for 1 h, the oil shaking mode is started. After 4 h of oil shaking, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 38.5 kg; the total oil output is 60.5 kg, and the oil yield is 86.9%.

[0121] Preparation of the cellulose enzyme reaction sesame residue used in this comparative example: After the sesame raw materials are cleaned and impurities are removed, they are placed in a pulverizer, and first-grade sesame oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 min, they are placed in an enzymatic hydrolysis tank, and stirring is slowly started. After the temperature in the tank rises to 50°C, the pH value of the system is adjusted to 5.5, and then 0.6% of cellulose enzyme (accounting for the weight of sesame) is added, and the reaction lasts for 6 h. The obtained enzymatic hydrolysate is transferred to a high-pressure reaction kettle and reacted at 190°C to obtain a mixed liquid of oil residue after the enzyme reaction. The oil, water, and oil-soluble and water-soluble substances are removed by centrifugation at 8000 r / min to obtain the cellulose enzyme reaction residue.

[0122] Comparative Example 5

[0123] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until they are discharged at 210°C. After fuming and cooling to 50°C, they are ground into slurry. 120 kg of the slurry is transferred to a slurry mixing pot, and 12 kg of enzyme reaction peanut residue (accounting for 10% of the sesame slurry weight) is added and thoroughly stirred and mixed with the sesame slurry. Then, 120 kg of boiling water is added for slurry mixing. After thorough stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 28.0 kg. After continuing to stir for 1 h, the oil shaking mode is started. After 4 h of oil shaking, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 34.0 kg; the total oil output is 62.0 kg, and the oil yield is 89.08%. Compared with Example 1, with the same slurry mixing and stirring time, the oil output is 6.8 kg more, an increase of 32.07%, and the total oil yield increases by 3.02%. Adding enzyme reaction peanut residue can also increase the oil yield of small mill sesame oil, but the small mill sesame oil has an uncoordinated and impure flavor.

[0124] Preparation of the enzyme reaction peanut residue used in this comparative example: After the peanut raw materials are cleaned and impurities are removed, they are placed in a pulverizer, and first-grade peanut oil is added at a ratio of 1:3 (w / w). After pulverizing for 2 min, they are placed in an enzymatic hydrolysis tank, and stirring is slowly started. After the temperature in the tank rises to 50°C, the pH value of the system is adjusted to 8.5, and then 0.6% of protease (accounting for the weight of sesame) is added, and the reaction lasts for 6 h. The obtained enzymatic hydrolysate is transferred to a high-pressure reaction kettle and reacted at 190°C to obtain a mixed liquid of oil residue after the enzyme reaction. The oil, water, and oil-soluble and water-soluble substances are removed by centrifugation at 8000 r / min to obtain the enzyme reaction residue.

[0125] Comparative Example 6

[0126] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 210°C and then discharged. They are cooled by fume removal to 50°C, ground into slurry, 120 kg of the slurry is transferred to a slurry mixing pot, 120 kg of boiling water is added for slurry mixing, and after fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 21.2 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 2 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 32.5 kg; the total oil output is 53.7 kg, and the oil yield is 77.16%.

[0127] Example 6

[0128] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 210°C and then discharged. They are cooled by fume removal to 50°C, ground into slurry, 120 kg of the slurry is transferred to a slurry mixing pot, 3.6 kg of enzyme reaction residue (accounting for 3% of the sesame slurry weight) is added and thoroughly mixed with the sesame slurry, and then 120 kg of boiling water is added for slurry mixing. After fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 23.7 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 2 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 37.5 kg; the total oil output is 61.2 kg, and the oil yield is 87.93%.

[0129] Example 7

[0130] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 210°C and then discharged. They are cooled by fume removal to 50°C, ground into slurry, 120 kg of the slurry is transferred to a slurry mixing pot, 6 kg of enzyme reaction residue (accounting for 5% of the sesame slurry weight) is added and thoroughly mixed with the sesame slurry, and then 120 kg of boiling water is added for slurry mixing. After fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 25.7 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 2 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 36.1 kg; the total oil output is 61.9 kg, and the oil yield is 88.94%.

[0131] Example 8

[0132] After the sesame raw materials are cleaned and impurities are removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 210°C and then discharged. They are cooled by fume removal to 50°C, ground into slurry, 120 kg of the slurry is transferred to a slurry mixing pot, 12 kg of enzyme reaction residue (accounting for 10% of the sesame slurry weight) is added and thoroughly mixed with the sesame slurry, and then 120 kg of boiling water is added for slurry mixing. After fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 28.5 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 2 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 35.0 kg; the total oil output is 63.5 kg, and the oil yield is 91.24%.

[0133] Comparative Example 7

[0134] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 200°C and then discharged. After fuming and cooling to 50°C, they are ground into pulp. 120 kg of the pulp is transferred to a pulp mixing pot, 120 kg of boiling water is added for pulp mixing, and after fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 20.8 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 4 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 37.9 kg; the total oil output is 58.7 kg, and the oil yield is 84.33%.

[0135] Example 9

[0136] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 200°C and then discharged. After fuming and cooling to 50°C, they are ground into pulp. 120 kg of the pulp is transferred to a pulp mixing pot, 12 kg of enzyme reaction residue (accounting for 10% of the sesame pulp weight) is added and fully stirred and mixed with the sesame pulp, and then 120 kg of boiling water is added for pulp mixing. After fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 26.5 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 33.9 kg; the total oil output is 60.4 kg, and the oil yield is 86.78%.

[0137] Comparative Example 8

[0138] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 220°C and then discharged. After fuming and cooling to 50°C, they are ground into pulp. 120 kg of the pulp is transferred to a pulp mixing pot, 120 kg of boiling water is added for pulp mixing. After fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 21.2 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 4 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 38.0 kg; the total oil output is 59.2 kg, and the oil yield is 85.06%.

[0139] Example 10

[0140] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, and then enter a roasting furnace for high-temperature roasting until the temperature reaches 220°C and then discharged. After fuming and cooling to 50°C, they are ground into pulp. 120 kg of the pulp is transferred to a pulp mixing pot, 12 kg of enzyme reaction residue (accounting for 10% of the sesame pulp weight) is added and fully stirred and mixed with the sesame pulp, and then 120 kg of boiling water is added for pulp mixing. After fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 27.5 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 33.5 kg; the total oil output is 61.0 kg, and the oil yield is 87.64%.

[0141] Comparative Example 9

[0142] The sesame raw materials are cleaned and decontaminated by a vibrating screen, washed with water, dried, and then put into a frying furnace for high-temperature roasting to 210°C. The materials are cooled to 30°C by removing smoke, and then slurried. 120 kg of slurry is transferred to a slurry mixing pot, and 120 kg of boiling water is added to mix the slurry. After being fully stirred for 1 hour, the oil layer floats out and is taken out. The oil weight is recorded as 21.3 kg. After continuing to stir for 1 hour, the oil shaking mode is turned on. After shaking the oil for 4 hours, the oil layer floats out and is taken out. The oil weight is recorded as 38.7 kg. A total of 60.0 kg of oil is produced, and the oil yield is 86.21%.

[0143] Embodiment 11

[0144] The sesame raw material is cleaned and removed by a vibrating screen, washed with water, dried, and put into a frying furnace for high-temperature roasting to 210°C for discharging, smoke is removed and cooled to 30°C, and then slurry is ground. 120 kg of slurry is transferred to a slurry mixing pot, 12 kg of enzyme reaction residue (accounting for 10% of the weight of sesame slurry) is added to the sesame slurry and stirred thoroughly, and then 120 kg of boiling water is added to the slurry. After stirring thoroughly for 1 hour, the oil layer floats out, the oil layer is taken out, and the oil weight is recorded as 27.4 kg. After continuing to stir for 1 hour, the oil shaking mode is turned on. After shaking the oil for 1 hour, the oil layer floats out, the oil layer is taken out, and the oil weight is recorded as 33.7 kg. A total of 61.1 kg of oil is produced, and the oil yield is 87.79%.

[0145] Comparative Example 10

[0146] The sesame raw materials are cleaned and decontaminated by a vibrating screen, washed with water, dried, and then put into a frying furnace for high-temperature roasting to 210°C. The materials are cooled to 70°C by removing smoke, and then slurried. 120 kg of slurry is transferred to a slurry mixing pot, and 120 kg of boiling water is added to mix the slurry. After being fully stirred for 1 hour, the oil layer floats out and is taken out. The oil weight is recorded as 21.5 kg. After continuing to stir for 1 hour, the oil shaking mode is turned on. After shaking the oil for 4 hours, the oil layer floats out and is taken out. The oil weight is recorded as 38.6 kg. A total of 60.1 kg of oil is produced, and the oil yield is 86.35%.

[0147] Example 12

[0148] The sesame raw material is cleaned and removed by a vibrating screen, washed with water, dried, and put into a frying furnace for high-temperature roasting to 210°C for discharging, smoke is removed and cooled to 70°C, and then slurry is ground. 120 kg of slurry is transferred to a slurry mixing pot, 12 kg of enzyme reaction residue (accounting for 10% of the weight of sesame slurry) is added to the sesame slurry and stirred thoroughly, and then 120 kg of boiling water is added to the slurry. After stirring thoroughly for 1 hour, the oil layer floats out, the oil layer is taken out, and the oil weight is recorded as 27.4 kg. After continuing to stir for 1 hour, the oil shaking mode is turned on. After shaking the oil for 1 hour, the oil layer floats out, the oil layer is taken out, and the oil weight is recorded as 33.9 kg. A total of 61.3 kg of oil is produced, and the oil yield is 88.07%.

[0149] Comparative Example 11

[0150] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, fed into a roasting furnace for high-temperature roasting until discharged at 210°C, cooled by fume removal to 50°C, ground into slurry. 120 kg of the slurry is transferred to a slurry mixing pot, 100 kg of boiling water is added for slurry mixing, and after fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 21.0 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 4 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 38.3 kg; the total oil output is 59.3 kg, and the oil yield is 85.20%.

[0151] Example 13

[0152] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, fed into a roasting furnace for high-temperature roasting until discharged at 210°C, cooled by fume removal to 50°C, ground into slurry. 120 kg of the slurry is transferred to a slurry mixing pot, 12 kg of enzyme reaction residue (accounting for 10% of the sesame slurry weight) is added and thoroughly stirred and mixed with the sesame slurry, and then 100 kg of boiling water is added for slurry mixing. After fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 26.7 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 34.3 kg; the total oil output is 61.0 kg, and the oil yield is 87.52%.

[0153] Comparative Example 12

[0154] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, fed into a roasting furnace for high-temperature roasting until discharged at 210°C, cooled by fume removal to 50°C, ground into slurry. 120 kg of the slurry is transferred to a slurry mixing pot, 140 kg of boiling water is added for slurry mixing. After fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 22.0 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 4 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 37.3 kg; the total oil output is 58.3 kg, and the oil yield is 83.76%.

[0155] Example 14

[0156] After the sesame raw materials are cleaned and impurity-removed by a vibrating screen, they are washed with water, dried, fed into a roasting furnace for high-temperature roasting until discharged at 210°C, cooled by fume removal to 50°C, ground into slurry. 120 kg of the slurry is transferred to a slurry mixing pot, 12 kg of enzyme reaction residue (accounting for 10% of the sesame slurry weight) is added and thoroughly stirred and mixed with the sesame slurry, and then 140 kg of boiling water is added for slurry mixing. After fully stirring for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 23.7 kg. After continuing to stir for 1 h, the oil shaking mode is started. After shaking the oil for 1 h, an oil layer floats out. This oil layer is taken out, and the oil weight is recorded as 36.2 kg; the total oil output is 59.9 kg, and the oil yield is 86.06%.

[0157] In summary of the above examples, using this technology can shorten the entire oil extraction time by 2 - 3 hours and increase the oil yield by 1% - 3%.

Claims

1. A method for shortening the oil extraction time and / or increasing the oil yield by the water displacement method, the method comprising the steps of grinding, slurry mixing, and oil separation, wherein, the reaction system for slurry mixing contains the material obtained by grinding, the enzyme reaction residue of oil seeds, and boiling water; wherein, the oil seeds are the same type of oil seeds as those used for grinding; the enzyme reaction residue is the residue of oil seeds obtained after removing water, oil-soluble and water-soluble components by enzymatic oil extraction from oil seeds; the enzymatic oil extraction includes mixing oil seeds and the oil produced from the oil seeds, performing an enzymatic hydrolysis reaction in the presence of a protease, performing a high-temperature heat treatment after the enzymatic hydrolysis reaction ends, and separating the oil seed residue after the high-temperature heat treatment ends; the dosage of the enzyme reaction residue is 3-15% of the weight of the oil seeds; the protease is selected from alkaline protease, flavor protease, neutral protease or a mixture thereof; the dosage of the protease is 0.1-2% of the weight of the oil seeds; in the enzymatic hydrolysis reaction system, the weight ratio of the oil seeds to the oil is 1:1 to 1:5; the temperature of the high-temperature heat treatment is 160-220 °C.

2. The method according to claim 1, characterized in that, the oil seeds are selected from: rice, sunflower seeds, peanuts, soybeans, rapeseeds, cotton seeds, safflower seeds, perilla seeds, tea seeds, cocoa beans, almond kernels, almonds, rice bran, corn, wheat germ, sesame seeds, flax seeds, evening primrose seeds, hazelnuts, walnuts, grape seeds, borage seeds, sea buckthorn seeds, tomato seeds, pumpkin seeds, and macadamia nuts.

3. The method according to claim 2, characterized in that, the oil seeds are sesame seeds, peanuts or rapeseeds.

4. The method according to claim 2, characterized in that, the oil seeds are sesame seeds.

5. The method according to claim 1, characterized in that, the temperature of the enzymatic hydrolysis reaction is 40-60 °C; and / or the pH of the enzymatic hydrolysis reaction system is 6.5-8.5; and / or centrifugally separate the oil seed residue.

6. The method according to claim 1, characterized in that, the dosage of the protease is 0.3-1% of the weight of the oil seeds.

7. The method according to claim 1, characterized in that, the temperature of the high-temperature heat treatment is 180-200 °C.

8. The method according to claim 1, characterized in that, the method has one or more of the following characteristics: in the reaction system for slurry mixing, the weight ratio of boiling water to the material is 0.8:1 to 1.5:1; the slurry mixing time is 0.5-2 hours.

9. The method according to claim 1, characterized in that, the dosage of the enzyme reaction residue is 5-15% of the weight of the oil seeds.

10. The method according to claim 8, characterized in that, the weight ratio of boiling water to the material is 1:1 to 1.2:

1.

11. The method according to claim 8, characterized in that, the slurry mixing time is 50-80 minutes.

12. The method according to claim 1, characterized in that, the step of separating oil includes, after the slurry mixing ends, separating the oil layer, then stirring for 0.5-2 hours, and then shaking the oil for 1-4 hours, and separating the oil layer.

13. The method according to claim 12, characterized in that, The total duration from slurry mixing to the end of oil shaking does not exceed 4 hours.

14. A method for preparing oil and fat by the water substitution method, characterized in that, the method includes the step of preparing oil and fat by the method described in any one of claims 1-13, and the step of post-treating the oil and fat.

15. The method according to claim 14, characterized in that, the post-treatment step includes one or more of degumming, deacidification, decolorization, deodorization and dewaxing.

16. The method according to claim 14, characterized in that, the oil and fat is sesame oil.

17. A method for preparing an oil and fat composition or blended oil, comprising the step of mixing the oil and fat prepared by the method described in any one of claims 14-16 with a base oil.

18. The method according to claim 17, characterized in that, the base oil is animal oil and / or vegetable oil.

19. The method according to claim 18, characterized in that, the animal oil is one or more of lard, beef tallow, chicken oil, duck oil, and / or the vegetable oil is derived from rice, sunflower seeds, peanuts, soybeans, rapeseeds, cottonseeds, safflower seeds, perilla seeds, tea seeds, cocoa beans, almonds, apricots, rice bran, corn, wheat germ, sesame, flax seeds, evening primrose seeds, hazelnuts, walnuts, grape seeds, borage seeds, sea buckthorn seeds, tomato seeds, pumpkin seeds and macadamia nuts.

20. The oil and fat prepared by the method described in any one of claims 14-16, an oil and fat composition or blended oil containing the oil and fat.

21. Application of oilseed residue in reducing the oil extraction time of the water substitution method and / or increasing the oil yield of the water substitution method, or application in preparing a material for reducing the oil extraction time of the water substitution method and / or increasing the oil yield of the water substitution method; the oilseed residue is an enzyme reaction residue obtained by removing water, oil-soluble and water-soluble components from the oilseed after enzymatic extraction of oil; the enzymatic extraction of oil includes mixing the oilseed and the oil produced from the oilseed, carrying out an enzymatic hydrolysis reaction in the presence of a protease, carrying out a high-temperature heat treatment after the enzymatic hydrolysis reaction is completed, and separating the oilseed residue after the high-temperature heat treatment is completed; the protease is selected from alkaline protease, flavor protease, neutral protease or a mixture thereof; the dosage of the protease is 0.1-2% of the weight of the oilseed; in the enzymatic hydrolysis reaction system, the weight ratio of the oilseed to the oil is 1:1 to 1:5; the temperature of the high-temperature heat treatment is 160-220 °C; the dosage of the enzyme reaction residue is 3-15% of the weight of the oilseed.

22. The application according to claim 21, characterized in that, the oilseed is selected from: rice, sunflower seeds, peanuts, soybeans, rapeseeds, cottonseeds, safflower seeds, perilla seeds, tea seeds, cocoa beans, almonds, apricots, rice bran, corn, wheat germ, sesame, flax seeds, evening primrose seeds, hazelnuts, walnuts, grape seeds, borage seeds, sea buckthorn seeds, tomato seeds, pumpkin seeds and macadamia nuts.

23. The application according to claim 22, characterized in that, the oilseed is sesame, peanut or rapeseed.

24. The application according to claim 22, characterized in that, the oilseed is sesame.