阅读说明：本技术 一种小磨芝麻油处理工艺及其制备的芝麻油 (Ground sesame oil treatment process and sesame oil prepared by same ) 是由 侯彦宁 于 2020-07-28 设计创作，主要内容包括：本发明公开了一种小磨芝麻油处理工艺及其制备的芝麻油,涉及芝麻油提取技术领域；一种小磨芝麻油处理工艺,包括以下步骤：S1水洗：将芝麻用水淘洗,制得洁净芝麻；S2热炒：将洁净芝麻转入炒锅中翻炒,制得热芝麻；S3粉碎：将热芝麻粉碎,制得芝麻粉；S4搅拌：向芝麻粉中加入分散液,制得芝麻浆；S5一次压榨：将芝麻浆进行一次压榨,制得第一滤液；S6二次压榨：进行二次压榨,制得第二滤液；S7三次压榨：进行三次压榨,制得第三滤液；S8油水分离：将滤液转入油水分离机,将油相和水相分离,收集油相,制得芝麻油。小磨芝麻油处理工艺具有可提高芝麻油提取效率的优点。小磨芝麻油处理工艺制备的芝麻油具有成本低的优点。(The invention discloses a treatment process of ground sesame oil and sesame oil prepared by the same, and relates to the technical field of sesame oil extraction; a process for treating ground sesame oil comprises the following steps: s1 water washing: washing semen Sesami with water to obtain clean semen Sesami; s2 parching: transferring clean sesame into a frying pan, and stir-frying to obtain hot sesame; s3 crushing: pulverizing hot semen Sesami to obtain semen Sesami powder; s4 stirring: adding the dispersion liquid into the sesame powder to prepare sesame pulp; s5 primary pressing: squeezing the sesame pulp for the first time to obtain a first filtrate; s6 secondary pressing: performing secondary squeezing to obtain a second filtrate; s7 triple pressing: squeezing for three times to obtain a third filtrate; s8 oil-water separation: transferring the filtrate into oil-water separator, separating oil phase and water phase, collecting oil phase, and making into oleum Sesami. The process for treating the ground sesame oil has the advantage of improving the extraction efficiency of the sesame oil. The sesame oil prepared by the ground sesame oil treatment process has the advantage of low cost.)

1. A process for treating ground sesame oil is characterized by comprising the following steps:

s1 water washing: washing semen Sesami with water to remove dust, mud and impurities to obtain clean semen Sesami;

s2 parching: transferring clean sesame into a frying pan, heating to 180-;

s3 crushing: pulverizing hot semen Sesami to obtain semen Sesami powder;

s4 stirring: adding 0.45-0.55 times of sesame weight of dispersion into sesame powder, and stirring for 40-80min to obtain sesame pulp; the dispersion comprises 100 parts by weight of water and 0.4-0.8 part by weight of sodium dihydrogen phosphate;

s5 primary pressing: introducing the sesame paste into a membrane filter press; introducing 0.4-0.7MPa of air into a diaphragm cavity of the diaphragm filter press for pressurization, performing primary squeezing, expanding the diaphragm cavity to squeeze sesame pulp, allowing liquid substances in the sesame pulp to flow out of the diaphragm filter press to obtain a first filtrate, and relieving the pressure of the diaphragm cavity to normal pressure;

s6 secondary pressing: introducing water 0.2-0.3 times of sesame weight into the membrane filter press, standing for 10-20min, introducing 0.4-0.7MPa of air into the membrane cavity for pressurizing, performing secondary pressing, allowing liquid substances to flow out of the membrane filter press to obtain a second filtrate, and relieving the pressure of the membrane cavity to normal pressure;

s7 triple pressing: introducing water 0.2-0.3 times of sesame weight into a membrane filter press, standing for 10-20min, introducing 0.4-0.7MPa of air into a membrane cavity, pressurizing for three times, squeezing liquid substances out of the membrane filter press to obtain a third filtrate, and relieving the pressure of the membrane cavity to normal pressure;

s8 oil-water separation: mixing the first filtrate, the second filtrate and the third filtrate uniformly to obtain filtrate, transferring the filtrate into an oil-water separator, separating oil phase and water phase, collecting oil phase, and making into oleum Sesami.

2. The process for treating ground sesame oil according to claim 1, wherein: the particle size of the sesame powder is not more than 80 μm.

3. The process for treating ground sesame oil according to claim 1, wherein: the dispersion also comprises 1-2 parts by weight of food grade diatomite.

4. The process for treating ground sesame oil according to claim 1, wherein: step S8, mixing the first filtrate, the second filtrate and the third filtrate uniformly to obtain a filtrate, transferring the filtrate into an oil-water separator, separating an oil phase from a water phase, and collecting the oil phase to obtain sesame oil; drying the squeezed wet filter residue at the temperature of 100-120 ℃ for 40-80min to obtain the sesame residue cake.

5. The process for treating ground sesame oil according to claim 1, wherein: the stirring temperature of the step S4 is 50-80 ℃; and in the step S8, the oil-water separation temperature is 15-30 ℃.

6. The process for treating ground sesame oil according to claim 1, wherein: the pressurizing rate of the pressurization is 0.01-0.02 MPa/min.

7. The process for treating ground sesame oil according to claim 6, wherein: the membrane filter press comprises a feeding channel (6) feeding from the middle part of the membrane filter press, a water inlet channel communicated with the lower part of the membrane filter press and a liquid outlet channel communicated with the upper part of the membrane filter press; the step S5 introduces sesame pulp from the inlet passage (6), the liquid substance flows out from the outlet passage, and the steps S6-S7 introduces water from the inlet passage.

8. The process for treating ground sesame oil according to claim 7, wherein: the filter press comprises a square feeding and discharging panel (5), the first water inlet channel (1), the second water inlet channel (2), the first liquid outlet channel (3) and the second liquid outlet channel (4) are respectively distributed at four corners of the feeding and discharging panel (5), and the first water inlet channel (1) and the first liquid outlet channel (3) are in opposite angles; the first filtrate flows out from the first liquid outlet channel (3), the step S6 is that water enters from the first water inlet channel (1), the second filtrate flows out from the first liquid outlet channel (3), the step S7 is that water enters from the second water inlet channel (2), and the third filtrate flows out from the second liquid outlet channel (4).

9. The sesame oil is characterized in that: is prepared by the process for treating the ground sesame oil according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of sesame oil extraction, in particular to a ground sesame oil treatment process and sesame oil prepared by the ground sesame oil treatment process.

Background

Sesame oil is amber, orange yellow and reddish, crystal-clear and transparent, thick and mellow, can be used for preparing cold and hot dishes, removes fishy smell and raw fragrance, is added to soup, has fresh and palatable taste, is used for cooking and frying, has pure and positive taste, is a treasure in edible oil, contains unsaturated fatty acid and amino acid necessary for human bodies, is the top of various vegetable oils, also contains rich vitamins and trace elements such as iron, zinc, copper and the like necessary for human bodies, has cholesterol content far lower than animal fat, is popular with people, and leads people to more and more researches on sesame oil extraction processes.

CN107189851A discloses a high-quality sesame oil extraction and processing process, which comprises the following steps: the method comprises the following steps of raw material treatment, dehydration and drying, primary baking, secondary baking and water-substituted oil preparation, wherein the process of the water-substituted oil preparation of the technical scheme is as follows: and (3) centrifuging and separating the sesame paste liquid prepared in the secondary baking step at a high speed, removing oil residues, reserving an oil layer, standing the oil layer for 7-10 days at room temperature, and obtaining a crude sesame oil product by adopting a traditional oil skimming mode. According to the technical scheme, separation between liquid-phase oil residue and solid-phase oil residue in sesame paste liquid is realized through centrifugal separation in the oil preparation process by a water extraction method.

However, the main components of the solid-phase oil residue are proteins and other substances, and have certain lipophilicity, and a certain amount of liquid phase containing the sesame oil can be remained in the oil residue after centrifugal separation, so that the extraction efficiency of the sesame oil is influenced to a certain extent, and the cost of the sesame oil is increased to a certain extent.

Disclosure of Invention

Aiming at the defects in the prior art, the first purpose of the invention is to provide a process for treating ground sesame oil, which has the advantage of improving the extraction efficiency of the sesame oil.

A second object of the present invention is to provide sesame oil, which has the advantage of low cost.

In order to achieve the first object, the invention provides the following technical scheme: a process for treating ground sesame oil comprises the following steps:

s1 water washing: washing semen Sesami with water to remove dust, mud and impurities to obtain clean semen Sesami;

s2 parching: transferring clean sesame into a frying pan, heating to 180-;

s3 crushing: pulverizing hot semen Sesami to obtain semen Sesami powder;

s4 stirring: adding 0.45-0.55 times of sesame weight of dispersion into sesame powder, and stirring for 40-80min to obtain sesame pulp; the dispersion comprises 100 parts by weight of water and 0.4-0.8 part by weight of sodium dihydrogen phosphate;

s5 primary pressing: introducing the sesame paste into a membrane filter press; introducing 0.4-0.7MPa of air into a diaphragm cavity of the diaphragm filter press for pressurization, performing primary squeezing, expanding the diaphragm cavity to squeeze sesame pulp, allowing liquid substances in the sesame pulp to flow out of the diaphragm filter press to obtain a first filtrate, and relieving the pressure of the diaphragm cavity to normal pressure;

s6 secondary pressing: introducing water 0.2-0.3 times of sesame weight into the membrane filter press, standing for 10-20min, introducing 0.4-0.7MPa of air into the membrane cavity for pressurizing, performing secondary pressing, allowing liquid substances to flow out of the membrane filter press to obtain a second filtrate, and relieving the pressure of the membrane cavity to normal pressure;

s7 triple pressing: introducing water 0.2-0.3 times of sesame weight into a membrane filter press, standing for 10-20min, introducing 0.4-0.7MPa of air into a membrane cavity, pressurizing for three times, squeezing liquid substances out of the membrane filter press to obtain a third filtrate, and relieving the pressure of the membrane cavity to normal pressure;

s8 oil-water separation: mixing the first filtrate, the second filtrate and the third filtrate uniformly to obtain filtrate, transferring the filtrate into an oil-water separator, separating oil phase and water phase, collecting oil phase, and making into oleum Sesami.

By adopting the technical scheme, the clean sesame is fried at high temperature, so that the sesame oil can flow from the interior of the sesame to the surface of the sesame, and the sesame oil can be dissociated from the sesame by crushing and breaking the cell walls of the sesame; the sesame powder is added with a dispersion liquid containing sodium dihydrogen phosphate, on one hand, sodium dihydrogen phosphate is dissolved in water to increase the density of an aqueous phase and increase the density difference between the aqueous phase and an oil phase, so that the aqueous phase and the oil phase are easier to separate; on the other hand, the sodium dihydrogen phosphate is weakly acidic, and the weakly acidic sodium dihydrogen phosphate reacts with the basic amino group in the protein, so that the hydrophilicity of solid matters in sesame pulp is improved, the lipophilicity is reduced, the acidic sesame oil is favorably dissociated from the sesame, and the extraction efficiency of the sesame oil is favorably improved; separating liquid substances in the sesame pulp from the sesame pulp through primary diaphragm pressing, and separating the residual sesame oil in a filter cake through secondary pressing and third pressing by adding water; according to the sesame seed oil extraction device, sesame seeds are fried at high temperature, crushed, sodium dihydrogen phosphate is added into dispersion liquid, sesame pulp is squeezed by a diaphragm filter press, water is added for washing twice and squeezing for multiple times, sesame oil in the sesame seeds is separated from the sesame seeds under the combined action, the residual quantity of the sesame oil in a filter cake is reduced, and the extraction efficiency of the sesame oil is improved to a certain extent. In the traditional process for extracting the sesame oil by shaking the shaking tank, the tank body needs to be shaken for a long time to promote the sesame oil to be dissociated, the shaking is generally carried out for 6 to 7 hours, the energy consumption is high, and the shaking time is long; compared with the traditional process for extracting the sesame oil by shaking the shaking tank, the method has the advantages of low energy consumption and short processing period.

Preferably, the particle size of the sesame powder is not more than 80 μm.

By adopting the technical scheme, the sesame is crushed into the sesame powder with smaller particle size, so that the cell walls of the sesame can be more sufficiently damaged, the sesame oil can be conveniently dissociated from the sesame, and the sesame oil extraction efficiency can be improved.

Preferably, the dispersion further comprises 1-2 parts by weight of food grade diatomaceous earth.

By adopting the technical scheme, a small amount of food-grade diatomite is added into the dispersion liquid, and the diatomite has a certain filtration assisting effect, so that the adsorption of a filter cake on the sesame oil is reduced, and the extraction efficiency of the sesame oil is improved.

Preferably, in step S8, the first filtrate, the second filtrate and the third filtrate are mixed uniformly to obtain a filtrate, the filtrate is transferred to an oil-water separator, an oil phase and a water phase are separated, and the oil phase is collected to obtain sesame oil; drying the squeezed wet filter residue at the temperature of 100-120 ℃ for 40-80min to obtain the sesame residue cake.

By adopting the technical scheme, the wet filter residue is dried and then stored, so that the sesame residue cake can be recycled, the economic value is improved, and the cost is reduced; meanwhile, the sesame cake is dried and then is stored independently, and the sesame cake is not easy to rot to generate odor due to less residual sesame oil and water in the sesame cake, so that the sesame cake is beneficial to recycling of the sesame cake.

Preferably, the stirring temperature of the step S4 is 50-80 ℃; and in the step S8, the oil-water separation temperature is 15-30 ℃.

By adopting the technical scheme, the step S4 is stirred at a higher temperature, which is beneficial to the full reaction of amino groups on protein and sodium dihydrogen phosphate, is beneficial to accelerating the release of sesame oil from sesame powder and is beneficial to improving the extraction efficiency of the sesame oil; the oil-water separation is carried out at a lower temperature, which is beneficial to improving the separation effect of the oil phase and the water phase and reducing the impurity content in the sesame oil.

Preferably, the pressurization rate of the pressurization is 0.01 to 0.02 MPa/min.

By adopting the technical scheme, the filter cake is squeezed by slowly pressurizing, so that liquid substances flow out of the liquid outlet of the filter press in order, the probability of damage of the membrane filter press due to squeezing operation is reduced, equipment is protected better, and the process cost is reduced.

Preferably, the membrane filter press comprises a feeding channel feeding from the middle part of the membrane filter press, a water inlet channel communicated with the lower part of the membrane filter press and a liquid outlet channel communicated with the upper part of the membrane filter press; the step S5 introduces sesame pulp from the inlet passage, the liquid substance flows out from the outlet passage, and the steps S6-S7 introduces water from the inlet passage.

By adopting the technical scheme, sesame pulp is guided in from the middle part of the membrane filter press, so that the sesame pulp is uniformly distributed in a filter cavity of the membrane filter press, the sesame pulp is pressed better, and the sesame oil extraction efficiency is improved. The density of the sesame oil is about 0.92g/ml, the density of the water is about 1g/ml, the density of the water is greater than that of the sesame oil, the sesame oil is easy to move upwards, the water is easy to move downwards, the sesame oil flows out from the upper part of the membrane filter press and is beneficial to enabling the sesame oil to flow out firstly and then, the water flows out, the water flowing out later has a certain flushing effect on the filter cake and the sesame oil remained in a pipeline, and the water flowing in from the lower part of the membrane filter press is beneficial to fully leaching the sesame oil remained in the filter cake and is beneficial.

The filter press comprises a square feeding and discharging panel, the first water inlet channel, the second water inlet channel, the first liquid outlet channel and the second liquid outlet channel are respectively distributed at four corners of the feeding and discharging panel, and the first water inlet channel and the first liquid outlet channel are in opposite angles; the first filtrate flows out from the first liquid outlet channel, the step S6 is that water enters from the first water inlet channel, the second filtrate flows out from the first liquid outlet channel, the step S7 is that water enters from the second water inlet channel, and the third filtrate flows out from the second liquid outlet channel.

By adopting the technical scheme, the diagonal water inlet and outlet are beneficial to prolonging the circulation distance of water in the filter cake, better leaching of the filter cake is beneficial, and the sesame oil extraction efficiency is improved.

In order to achieve the second object, the invention provides the following technical scheme: a sesame oil is prepared by the above-mentioned process for processing ground sesame oil.

By adopting the technical scheme, the sesame oil is prepared by using the ground sesame oil treatment process disclosed by the application, so that the extraction efficiency of the sesame oil is improved, the yield of the sesame oil is improved, and the cost is reduced.

In summary, the invention includes at least one of the following beneficial technical effects:

1. according to the sesame oil extraction method, sesame is fried at high temperature, sesame is crushed to destroy cell walls of the sesame, so that sesame oil can be conveniently dissociated from the sesame, a small amount of weakly acidic sodium dihydrogen phosphate is added into dispersion liquid, the density of a water phase is increased, the separation effect of the water phase and an oil phase is improved, the weakly acidic sodium dihydrogen phosphate reacts with alkaline amino groups on protein in sesame pulp, the hydrophilicity of solid matters in the sesame pulp is improved, the lipophilicity is reduced, the sesame oil containing acidic carboxyl groups can be forced to dissociate, and the sesame oil extraction efficiency is improved; the sesame paste is squeezed by using a filter press, and then is leached twice and squeezed for many times by adding water, so that the residual sesame oil in a filter cake is reduced, the sesame oil extraction efficiency is improved, and the cost is reduced to a certain extent; in the traditional process for extracting the sesame oil by shaking the shaking tank, the tank body needs to be shaken for a long time to promote the sesame oil to be dissociated, the shaking is generally carried out for 6 to 7 hours, the energy consumption is high, and the shaking time is long; compared with the traditional process for extracting the sesame oil by shaking the shaking tank, the method disclosed by the application also has the advantages of low energy consumption and short processing period;

2. according to the method, the sesame oil extraction efficiency is improved by adding food-grade diatomite, controlling the particle size of sesame powder, preparing sesame pulp by stirring at a higher temperature, performing oil-water separation at a lower temperature, controlling the pressurizing rate and the like;

3. according to the sesame oil extracting device, sesame slurry is fed from the middle of the membrane filter press, water is introduced from the lower portion of the membrane filter press for leaching, liquid is discharged from the upper portion of the membrane filter press, water enters and is discharged from opposite angles, the leaching efficiency of filter cakes is improved, and the sesame oil extracting efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of a membrane filter press used for pressing in the present application.

Reference numerals: 1. a first water inlet channel; 2. a second water inlet channel; 3. a first liquid outlet channel; 4. a second liquid outlet channel; 5. a feeding and discharging panel; 6. a feed channel; 7. a feed valve; 8. a first water inlet valve; 9. a second water inlet valve; 10. a first liquid outlet valve; 11. and a second liquid outlet valve.

Detailed Description