CN103074153A - Method for leaching vegetable oil by vegetable oil materials through protease enzymolysis - Google Patents
Method for leaching vegetable oil by vegetable oil materials through protease enzymolysis Download PDFInfo
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Abstract
The invention discloses a method for leaching vegetable oil by vegetable oil materials through protease enzymolysis. The method comprises the steps that a vegetable oil material is dried to be with a moisture content lower than 15% and/or squeezed by an oil press to prepare oil, the vegetable oil material is smashed and subjected to 20 to 40 meshes, oil particles are obtained, a protease water solution with the pH ranging from 6.5 to 7.5 is added to the oil particles and is stirred uniformly, the mixture has an enzymolysis reaction for 8 hours to 16 hours at a temperature ranging from 30 DEG C to 45 DEG C, oil after the enzymolysis reaction is dried to be with a moisture content lower than 10% at a temperature of 100 DEG C, No. 6 extraction solvent oil is used to leach vegetable oil. The method is based on a technology of vegetable oil material cold squeezing to prepare oil, squeezed oil protein is subjected to protease enzymolysis, and protein of the vegetable oil materials with an oil content being lower than 20% is directly subjected to protease enzymolysis, so that the oil can meet requirements of oil leaching extraction methods without being subjected to high-temperature steaming and frying, the benzopyrene content of the leached vegetable oil is within 2mcg/L, and edible safety of the vegetable oil is improved greatly.
Description
(1) technical field
The present invention relates to a kind of method of vegetable oil extraction, particularly a kind of method of protease hydrolyzed vegetable oil material extracted plant oil.
(2) background technology
At present, vegetables oil is produced used large-scale industry method both at home and abroad two kinds, and a kind of is the mechanical expression method, and a kind of is the solvent extraction method.The vegetable oil material higher to oil-contg, such as Semen Brassicae campestris, tea seed also adopts and squeezes first the preparation method that leaches afterwards.The yield of producing for improving vegetables oil, various method of making oil all need vegetable oil material high temperature is steamed stir-fry, to the sex change of oilseed protein height.Because steaming, fries to the albumen height sex change oil plant high temperature, can produce a kind of strong carcinogen benzopyrene, all contain a certain amount of benzopyrene in the vegetables oil no matter milling process or lixiviation process make, the oil that makes of solvent extraction method particularly, the oil that benzopyrene content obtains apparently higher than squeezing causes food safety to have a strong impact on.Existing country and tissue are limited in 2 micrograms per litre with interior (the existing national standard of China is in 10 micrograms per litre) with the content of benzopyrene in the edible vegetable oil in the world, reach this requirement, and existing vegetables oil preparation technique all can't be realized.Do not fry to the albumen height sex change and vegetable oil material high temperature is not steamed, can realize that by the Technology of existing method of making oil benzopyrene from edible oil content is controlled in 2 micrograms per litre, but oil extracting rate will obviously to reduce the waste vegetable oil resource.
(3) summary of the invention
The object of the invention provides a kind of method of protease hydrolyzed vegetable oil material extracted plant oil, namely first with the protease hydrolyzed vegetable oil material, the method of solvent extraction again, the inventive method reduces the content of strong carcinogen benzopyrene in the edible vegetable oil, reach and be lower than limiting the quantity of of 2 micrograms per litre, guarantee again simultaneously the oil extracting rate of vegetable oil material, make the vegetable oil material resid amount of carrying behind the oil in 1.0%.To improving the food safety of edible vegetable oil, guarantee the benefit of utilizing of vegetable oil material, all significant.
The technical solution used in the present invention is:
The invention provides a kind of method of protease hydrolyzed vegetable oil material extracted plant oil, described method is: oleaginousness is lower than 20% vegetable oil material and is dried to moisture content less than 15%, pulverize, cross 20 ~ 40 mesh sieves, obtain oil plant particle a, then the aqueous solution of protease a with pH value 6.5 ~ 7.5 adds among the oil plant particle a, stir, at 30 ~ 45 ℃ of preferred 40 ℃ of enzyme digestion reaction 12h of lower enzyme digestion reaction 8 ~ 16h(), oil plant behind the enzyme digestion reaction is dried to moisture content less than 10% at 100 ℃, then uses soybean extracting solvent no.6 extracted plant oil a; The consumption of proteolytic enzyme is take the enzyme work of proteolytic enzyme as 100 ~ 200U/g oil plant particle a among the described aqueous solution of protease a.
The major ingredient of described soybean extracting solvent no.6 is normal hexane (C
6H
14) 74% and hexanaphthene (C
6H
12) 16%.
Further, proteolytic enzyme is that the peak enzymolysis-ability pH value in reaction is 6.0 ~ 8.0 proteolytic enzyme among the described aqueous solution of protease a.
Further, to be lower than 20% vegetable oil material be soybean or rice bran to described oleaginousness.
Further, described method with soybean extracting solvent no.6 extracted plant oil a is: with the oil plant behind the enzyme digestion reaction 100 ℃ be dried to moisture content less than 10% rear adding flat rotary extractor in, 45 ~ 50 ℃ of lixiviates, obtain vegetables oil a with soybean extracting solvent no.6.
The present invention also provides the method for another kind of protease hydrolyzed vegetable oil material extracted plant oil, described method is: oleaginousness is dried to moisture content less than 15% at the vegetable oil material more than 20%, then temperature adopts oil press zhai squeezing liquefaction less than (preferred 78 ~ 88 ℃) under 90 ℃ of conditions in the oil press zhai thorax, obtain oil cake and vegetables oil b, oil cake is pulverized, cross 20 ~ 40 mesh sieves, obtain oil plant particle b; The aqueous solution of protease b of pH value 6.5 ~ 7.5 is added among the oil plant particle b, stir, at 30 ~ 45 ℃ of preferred 40 ℃ of enzyme digestion reaction 12h of lower enzyme digestion reaction 8 ~ 16h(), the oil plant behind the enzyme digestion reaction is dried to moisture content less than 10% at 100 ℃, use again soybean extracting solvent no.6 extracted plant oil c; The consumption of proteolytic enzyme is take the enzyme work of proteolytic enzyme as 100 ~ 200U/g oil plant particle b among the described aqueous solution of protease b.
Further, described oleaginousness is tea seed, peanut, walnut or Semen Brassicae campestris at the vegetable oil material more than 20%.
Further, adopt oil press zhai squeezing liquefaction in the described oil press zhai thorax under 78 ~ 88 ℃ of conditions of temperature, the oil cake oleaginousness is 10 ~ 19% after the squeezing.
Further, proteolytic enzyme is that the peak enzymolysis-ability pH value in reaction is 6.0 ~ 8.0 proteolytic enzyme among the described aqueous solution of protease b.
Further, described method with soybean extracting solvent no.6 extracted plant oil c is: with the oil plant behind the enzyme digestion reaction 100 ℃ be dried to moisture content less than 10% rear adding flat rotary extractor in, 45-50 ℃ of lixiviate, obtain vegetables oil c with soybean extracting solvent no.6.
Soybean extracting solvent no.6 outward appearance of the present invention is colourless transparent liquid, is the mixture of various lower paraffin hydrocarbonss, and product standard is GB 16629-96, and Taizhou, recommendation Jiangsu chemical industry company limited that increases income produces.
Aqueous solution of protease a of the present invention, aqueous solution of protease b are aqueous solution of protease, name for ease of distinguishing used aqueous solution of protease difference in the different methods, letter itself does not have implication, and described aqueous solution of protease is regulated the pH value with NaOH or the HCl of 1 mol/L.
Oil plant particle a of the present invention, oil plant particle b are the oil plant particle after different step is pulverized, and name for ease of distinguishing different methods gained oil plant particle difference, and letter itself does not have implication.
Vegetables oil a of the present invention, vegetables oil b and vegetables oil c are vegetables oil, name for ease of distinguishing different step gained plant oil mass difference, and letter itself does not have implication.
The resid amount of vegetable oil material of the present invention after enzymolysis, lixiviate adopts the Soxhlet extraction process to detect, and detects the content of benzopyrene in the oil by GB GBT22509-2008 method.The Soxhlet extraction process is undertaken by the operational requirement of GB GB19644-2010 regulation.
Compared with prior art, beneficial effect of the present invention is mainly reflected in:
The present invention is take vegetable oil material cold pressing oil technology as the basis, albumen with oil plant after the protease hydrolyzed squeezing, or to its albumen of the direct protease hydrolyzed of the vegetable oil material of oleaginousness below 20%, make oil plant steam to fry without high temperature and also can reach the requirement that lixiviation process is carried oil, and can directly utilize the equipment of existing extracted plant oil.The vegetables oil benzopyrene content that lixiviate obtains has improved the edible safety of vegetables oil greatly in 2 micrograms per litre.And steam the oil plant of frying without high temperature, put forward the economic worth of utilizing behind the oil and also improve.
(4) embodiment
The present invention is described further below in conjunction with specific embodiment, but protection scope of the present invention is not limited in this:
Embodiment 1:
Tea seed (Quzhou City, the Zhejiang Province product) sun shines to moisture content 14.7% oleaginousness 31.5%.Get 500 kilograms of oil press zhai that at room temperature adopt Wuhan grain farmer's machinofacture company limited to produce and carry out mechanical expression liquefaction (squeezing once), temperature is 85 ℃ in the thorax of oil press zhai, and the tea seed cake oleaginousness 12.7% behind the oil is put forward in squeezing.Get 400 kilograms of the tea seed cakes carried behind the oil, mechanical disintegration is crossed 40 mesh sieves, and adding pH value is 7.0 aqueous solution of protease, add-on is 160 liters, and the content of proteolytic enzyme in the aqueous solution of protease (Xingtai City Taihe county Measurement for Biochemistry company limited) is 500 unit/ml.After stirring, 40 ℃ of enzyme digestion reactions 8 hours.Oil plant behind the enzymolysis is dried to water content 8.2% at 100 ℃, then add in the flat rotary extractor (the sincere moral oil equipment in Mengzhou City, Henan company limited product), with 360 liters of soybean extracting solvent no.6s (Taizhou, Jiangsu increase income chemical industry company limited produce) 45 ℃ of lixiviates, oil plant is measured with soxhlet extraction after the lixiviate, residual oil content 0.86%.
Get 400 kilograms after carrying oil with the squeezing of a collection of tea seed, without protease hydrolyzed, direct 100 ℃ are dried to water content 8.3%, similarity condition soybean extracting solvent no.6 extraction oil producing, the residual oil content 3.3% in the oil plant.Two kinds of tea oil that technological method makes detect by GB GBT22509-2008 method, and the content of benzopyrene is respectively 1.78 micrograms per litre and 1.84 micrograms per litre in the oil.
Embodiment 2:
90 ℃ of tea seeds (Quzhou City, Zhejiang Province product) dry by the fire to moisture content 14.5% oleaginousness 30.6%.Get 500 kilograms of oil press zhai mechanical expression liquefactions that at room temperature adopt Wuhan grain farmer's machinofacture company limited to produce, temperature is 86 ℃ in the thorax of oil press zhai, and the tea seed cake oleaginousness 12.4% behind the oil is put forward in squeezing.Get 400 kilograms of the tea seed cakes carried behind the oil, mechanical disintegration is crossed 20 mesh sieves, adds the pH value and be 7.5 aqueous solution of protease, and add-on is 80 liters, and the content of proteolytic enzyme in the aqueous solution of protease (Xingtai City Taihe county Measurement for Biochemistry company limited) is 500 unit/ml.After stirring, kept 30 ℃ of enzyme digestion reactions 16 hours.100 ℃ of oil plants behind the enzymolysis are dried to water content 8.5%, add in the flat rotary extractor (the sincere moral oil equipment in Mengzhou City, Henan company limited product), with 320 liters of soybean extracting solvent no.6s (Taizhou, Jiangsu increase income chemical industry company limited produce) 50 ℃ of lixiviates, oil plant is measured with soxhlet extraction after the lixiviate, residual oil content 0.93%.
Get 400 kilograms after carrying oil with the squeezing of a collection of tea seed, without protease hydrolyzed, direct 100 ℃ are dried to water content 8.6%, adopt soybean extracting solvent no.6 extraction oil producing, the residual oil content 3.2% in the oil plant under the similarity condition.Two kinds of tea oil that technological method makes detect by GB GBT22509-2008 method, and the content of benzopyrene is respectively 1.76 micrograms per litre and 1.85 micrograms per litre in the oil.
Embodiment 3:
Tea seed (Quzhou City, the Zhejiang Province product) sun shines to moisture content 14.8% oleaginousness 31.2%.Get 500 kilograms of oil press zhai mechanical expression liquefactions that at room temperature adopt Wuhan grain farmer's machinofacture company limited to produce, temperature is 88 ℃ in the thorax of oil press zhai, and the tea seed cake oleaginousness 13.1% behind the oil is put forward in squeezing.Get 400 kilograms of the tea seed cakes carried behind the oil, mechanical disintegration is crossed 30 mesh sieves, and adding pH value is 6.5 aqueous solution of protease, add-on is 120 liters, and the content of proteolytic enzyme in the aqueous solution of protease (Xingtai City Taihe county Measurement for Biochemistry company limited) is 500 unit/ml.After stirring, kept 45 ℃ of enzyme digestion reactions 12 hours.100 ℃ of oil plants behind the enzymolysis are dried to water content 8.7%, add in the flat rotary extractor (the sincere moral oil equipment in Mengzhou City, Henan company limited products) with 400 liters of soybean extracting solvent no.6s (Taizhou, Jiangsu increase income chemical industry company limited product) 40 ℃ of lixiviates.Oil plant is measured with soxhlet extraction after the lixiviate, residual oil content 0.85%.
Get 400 kilograms after carrying oil with the squeezing of a collection of tea seed, without protease hydrolyzed, direct 100 ℃ are dried to water content 8.6%, similarity condition extraction oil producing, the residual oil content 3.5% in the oil plant.Two kinds of tea oil that technological method makes detect by GB GBT22509-2008 method, and the content of benzopyrene is respectively 1.72 micrograms per litre and 1.81 micrograms per litre in the oil.
Embodiment 4:
Semen Brassicae campestris (Huzhou City of Zhejiang Province product) sun shines to moisture content 14.8% oleaginousness 38.5%.Get 600 kilograms of oil press zhai mechanical expression liquefactions that at room temperature adopt Wuhan grain farmer's machinofacture company limited to produce, temperature is 87 ℃ in the thorax of oil press zhai, and the rapeseed cake oleaginousness 16.2% behind the oil is put forward in squeezing.Get 400 kilograms of the rapeseed cakes carried behind the oil, mechanical disintegration is crossed 30 mesh sieves, and adding pH value is 7.0 aqueous solution of protease, add-on is 120 liters, and the content of proteolytic enzyme in the aqueous solution of protease (Xingtai City Taihe county Measurement for Biochemistry company limited) is 500 unit/ml.After stirring, kept 40 ℃ of enzyme digestion reactions 12 hours.100 ℃ of oil plants behind the enzymolysis are dried to water content 8.6%, add in the flat rotary extractor (the sincere moral oil equipment in Mengzhou City, Henan company limited products) with 440 liters of soybean extracting solvent no.6s (Taizhou, Jiangsu increase income chemical industry company limited product) 45 ℃ of lixiviates.Oil plant after the lixiviate is measured with soxhlet extraction, residual oil content 0.91%.
Get 400 kilograms after carrying oil with the squeezing of a collection of Semen Brassicae campestris, without protease hydrolyzed, direct 100 ℃ are dried to water content 8.8%, similarity condition extraction oil producing, the residual oil content 4.7% in the oil plant.Two kinds of rape oils that technological method makes detect by GB GBT22509-2008 method, and the content of benzopyrene is respectively 1.83 micrograms per litre and 1.80 micrograms per litre in the oil.
Embodiment 5:
90 ℃ of Semen Brassicae campestris (Huzhou City of Zhejiang Province product) are dried by the fire to moisture content 14.6% oleaginousness 38.7%.Get 600 kilograms of oil press zhai mechanical expression liquefactions that at room temperature adopt Wuhan grain farmer's machinofacture company limited to produce, temperature is 86 ℃ in the thorax of oil press zhai, and the rapeseed cake oleaginousness 16.3% behind the oil is put forward in squeezing.Get 400 kilograms of the rapeseed cakes carried behind the oil, mechanical disintegration is crossed 40 mesh sieves, and adding pH value is 7.5 aqueous solution of protease, add-on is 130 liters, and the content of proteolytic enzyme in the aqueous solution of protease (Xingtai City Taihe county Measurement for Biochemistry company limited) is 500 unit/ml.After stirring, kept 45 ℃ of enzyme digestion reactions 11 hours.100 ℃ of oil plants behind the enzymolysis are dried to water content 8.4%, add in the flat rotary extractor (the sincere moral oil equipment in Mengzhou City, Henan company limited products) with 400 liters of soybean extracting solvent no.6s (Taizhou, Jiangsu increase income chemical industry company limited product) 50 ℃ of lixiviates.Oil plant is measured with soxhlet extraction after the lixiviate, residual oil content 0.94%.
Get 400 kilograms after carrying oil with the squeezing of a collection of Semen Brassicae campestris, without protease hydrolyzed, direct 100 ℃ are dried to water content 8.5%, and similarity condition adopts soybean extracting solvent no.6 extraction oil producing, the residual oil content 4.8% in the oil plant.Two kinds of rape oils that technological method makes detect by GB GBT22509-2008 method, and the content of benzopyrene is respectively 1.85 micrograms per litre and 1.83 micrograms per litre in the oil.
Embodiment 6:
Soybean (Jilin, Jilin Province product) moisture content 13.6%, oleaginousness 17.5%.Get 400 kilograms, mechanical disintegration is crossed 40 mesh sieves, and adding pH value is 7.0 aqueous solution of protease, and add-on is 120 liters, and the content of proteolytic enzyme in the aqueous solution (Xingtai City Taihe county Measurement for Biochemistry company limited) is 500 unit/ml.After stirring, kept 45 ℃ of enzyme digestion reactions 12 hours.100 ℃ of oil plants behind the enzymolysis are dried to water content 8.7%, add in the flat rotary extractor (the sincere moral oil equipment in Mengzhou City, Henan company limited products) with 400 liters of soybean extracting solvent no.6s (Taizhou, Jiangsu increase income chemical industry company limited product) 40 ℃ of lixiviates.Oil plant is measured with soxhlet extraction after the lixiviate, residual oil content 0.93%.
Get 400 kilograms with a collection of soybean, without protease hydrolyzed, direct 100 ℃ are dried to water content 8.6%, and similarity condition adopts soybean extracting solvent no.6 extraction oil producing, the residual oil content 4.2% in the oil plant.Two kinds of soybean oil that technological method makes detect by GB GBT22509-2008 method, and the content of benzopyrene is respectively 1.75 micrograms per litre and 1.83 micrograms per litre in the oil.
Claims (9)
1. the method for a protease hydrolyzed vegetable oil material extracted plant oil, it is characterized in that described method is: oleaginousness is lower than 20% vegetable oil material and is dried to moisture content less than 15%, pulverize, cross 20 ~ 40 mesh sieves, obtain oil plant particle a, then the aqueous solution of protease a with pH value 6.5 ~ 7.5 adds among the oil plant particle a, stir, at 30 ~ 45 ℃ of lower enzyme digestion reaction 8 ~ 16h, oil plant behind the enzyme digestion reaction is dried to moisture content less than 10% at 100 ℃, then uses soybean extracting solvent no.6 extracted plant oil a; The consumption of proteolytic enzyme is take the enzyme work of proteolytic enzyme as 100-200U/g oil plant particle a among the described aqueous solution of protease a.
2. the method for protease hydrolyzed vegetable oil material extracted plant oil as claimed in claim 1 is characterized in that proteolytic enzyme is that the peak enzymolysis-ability pH value in reaction is 6.0 ~ 8.0 proteolytic enzyme among the described aqueous solution of protease a.
3. the method for protease hydrolyzed vegetable oil material extracted plant oil as claimed in claim 1 is characterized in that it is soybean or rice bran that described oleaginousness is lower than 20% vegetable oil material.
4. the method for protease hydrolyzed vegetable oil material extracted plant oil as claimed in claim 1, it is characterized in that described method with soybean extracting solvent no.6 extracted plant oil a is: with the oil plant behind the enzyme digestion reaction 100 ℃ be dried to moisture content less than 10% rear adding flat rotary extractor in, 45 ~ 50 ℃ of lixiviates, obtain vegetables oil a with soybean extracting solvent no.6.
5. the method for a protease hydrolyzed vegetable oil material extracted plant oil, it is characterized in that described method is: oleaginousness is dried to moisture content less than 15% at the vegetable oil material more than 20%, then temperature is squeezed liquefaction less than employing oil press zhai under 90 ℃ of conditions in the oil press zhai thorax, obtain oil cake and vegetables oil b, oil cake is pulverized, cross 20 ~ 40 mesh sieves, obtain oil plant particle b; The aqueous solution of protease b of pH value 6.5 ~ 7.5 is added among the oil plant particle b, stir, at 30 ~ 45 ℃ of lower enzyme digestion reaction 8 ~ 16h, the oil plant behind the enzyme digestion reaction is dried to moisture content less than 10% at 100 ℃, use again soybean extracting solvent no.6 extracted plant oil c; The consumption of proteolytic enzyme is take the enzyme work of proteolytic enzyme as 100 ~ 200U/g oil plant particle b among the described aqueous solution of protease b.
6. the method for protease hydrolyzed vegetable oil material extracted plant oil as claimed in claim 5 is characterized in that described oleaginousness is tea seed, peanut, walnut or Semen Brassicae campestris at the vegetable oil material more than 20%.
7. the method for protease hydrolyzed vegetable oil material extracted plant oil as claimed in claim 5 is characterized in that adopting oil press zhai squeezing liquefaction in the described oil press zhai thorax under 78 ~ 88 ℃ of conditions of temperature, and the oil cake oleaginousness is 10 ~ 19% after the squeezing.
8. the method for protease hydrolyzed vegetable oil material extracted plant oil as claimed in claim 5 is characterized in that proteolytic enzyme is the proteolytic enzyme of peak enzymolysis-ability pH value in reaction 6.0 ~ 8.0 among the described aqueous solution of protease b.
9. the method for protease hydrolyzed vegetable oil material extracted plant oil as claimed in claim 5, it is characterized in that described method with soybean extracting solvent no.6 extracted plant oil c is: with the oil plant behind the enzyme digestion reaction 100 ℃ be dried to moisture content less than 10% rear adding flat rotary extractor in, 45 ~ 50 ℃ of lixiviates, obtain vegetables oil c with soybean extracting solvent no.6.
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| CN105087147A (en) * | 2015-10-09 | 2015-11-25 | 黑龙江林加林油脂有限公司 | Method for preparing soybean oil through cold pressing |
| CN108865419A (en) * | 2018-06-28 | 2018-11-23 | 广西浙缘农业科技有限公司 | A kind of process for cold pressing tea seeds to produce oil |
| CN110129125A (en) * | 2019-05-20 | 2019-08-16 | 张玲 | Method for processing edible oil by squeezing and enzymolysis |
| CN112680274A (en) * | 2021-03-16 | 2021-04-20 | 江西浪漫谷生态农业有限公司 | Refining method and system of rice bran oil |
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| CN112680274A (en) * | 2021-03-16 | 2021-04-20 | 江西浪漫谷生态农业有限公司 | Refining method and system of rice bran oil |
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Application publication date: 20130501 |