CN103289820B - Method for reducing peroxide in plant oil - Google Patents
Method for reducing peroxide in plant oil Download PDFInfo
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- CN103289820B CN103289820B CN201310268638.9A CN201310268638A CN103289820B CN 103289820 B CN103289820 B CN 103289820B CN 201310268638 A CN201310268638 A CN 201310268638A CN 103289820 B CN103289820 B CN 103289820B
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Abstract
The invention relates to a method for reducing peroxide in plant oil. The invention relates to the field of plant oil processing technology, and particularly relates to a method for reducing peroxide in the plant oil. According to the method, the peroxide in the plant oil can be effectively lowered by reducing, neutralizing and purifying by taking gallic acid as a reducing agent and NaOH as a neutralizer, thus refined plant oil with peroxide value of less than 1meq/kg can be obtained. According to the method, oil is processed by adopting a green and non-toxic processing agent, impurities are easily separated, no residual treating agent exists, the safety of the obtained refined plant oil can be guaranteed, the processing procedures are simple, the industrialized production can be easily realized, and the method is applicable to processing of a great amount of plant oil.
Description
Technical field
The present invention relates to the processing technique field of vegetables oil, particularly reduce the wherein method of superoxide.
Background technology
In vegetables oil, contain a large amount of unsaturated fatty acidss, at storage period, be subject to the effect of moisture and enzyme in light, heat, airborne oxygen and grease.Often can there is the chemical transformation of all kinds of complexity and cause the variation of grease character.Intermediate product-superoxide in process spoiled by rancid oil or fat, that grease and airborne oxygen generation oxygenizement produce, there is the activity of height, can continue to decompose to generate to there are volatile aldehydes, ketone and low molecular lipid acid etc., make grease there is a kind of special stink and be with smell excitatory (being commonly called as " rancid " taste), reduce oil quality, becoming sour, it is edible poisoning to cause when serious, therefore reduce superoxide in grease, reduce the peroxide value of grease, to ensure that oil quality is safely very necessary.Patent documentation and Scientific Magazine were introduced the method for several reduction oil peroxidation values at present, but these methods are mostly for a certain concrete oil product, there is no versatility, and some treatment process complicated operation, exists the residual problem for the treatment of agent.
Summary of the invention
The object of the invention is to propose the method for peroxide value in a kind of reduction grease of being convenient to suitability for industrialized production.
The present invention includes following steps:
1) reduction: under 50～90 DEG C of temperature condition, vegetables oil is mixed and carries out reduction reaction with gallic acid, obtain the oil solution after reduction;
2) neutralization: be 5% the NaOH aqueous solution to adding mass concentration in the oil solution after reduction, stir 30 min under the envrionment temperature of 40～50 DEG C, then stratification, discharges water waste liquid, obtains oil phase;
3) purifying: be 5～10% the NaCl aqueous solution to adding mass concentration in oil phase, agitator treating under the envrionment temperature of 30～50 DEG C, then centrifugal point of oil-yielding stratum, repeats above-mentioned washing process, until the water separating is neutrality; Oil phase obtains refined plant oil through vacuum hydro-extraction.
The present invention, taking gallic acid as reductive agent, taking NaOH as neutralizing agent, can effectively reduce superoxide in vegetables oil through reduction, neutralization and three steps of purifying, can obtain the refined plant oil that peroxide value is less than 1meq/kg.
The present invention has advantages of as follows:
1, the present invention adopts green, nontoxic treatment agent to process grease, is easy to separate, non-processor agent is residual, guarantees the security of gained refined plant oil after processing;
2, treating processes of the present invention is simple, and easy handling, without special device, only needs traditional stirring, heating and centrifugal separation equipment, is easy to realize industrialized production;
3, in the minimizing vegetables oil that the present invention proposes, the method for superoxide, is suitable for many oil products, as rapeseed oil, Semen Maydis oil, soybean oil, Trisun Oil R 80, flax wet goods.
In addition, when reduction of the present invention, the mass ratio that feeds intake of vegetables oil and gallic acid is 10 ︰ 0.1～2.Gallic acid consumption is depending on the peroxide value of pending vegetables oil, and its consumption raises and increases with peroxide value.
In described and time, the NaOH aqueous solution adding and the mass ratio of vegetables oil are 0.1～1 ︰ 10.NaOH consumption increases with gallic acid amount, makes the impurity in oil phase fully transfer to water.
When described purifying, the mass ratio that feeds intake of vegetables oil and 5～10%NaCl solution is 10 ︰ 1.The water potential of hydrogen of washing times depending on separating, finishes washing when water is neutrality.
If the peroxide value of pending vegetables oil is higher, while being greater than 50meq/kg as peroxide value, can repeating aforesaid method and process for several times, until its peroxide value is less than 1meq/kg.
Embodiment
One, embodiment 1:
1, reduction: getting peroxide value is the rapeseed oil 100g of 28.6 meq/kg, is heated to 90 DEG C, stirs, and then 5g gallic acid is joined in oil, and insulation, continues to stir 6h, carries out reduction reaction, obtains the oil solution after reduction.
2, neutralization: to add 60mL mass concentration be 5%NaOH solution in the oil solution after reduction, stirs 30 min under the envrionment temperature of 40 DEG C, and stratification, discharges water waste liquid, oil phase processing to be purified.
3, purifying: add 50mL mass concentration 5%NaCl solution agitator treating under the envrionment temperature of 50 DEG C in oil phase, centrifugal point of oil-yielding stratum, repeats above-mentioned washing process, until the water separating is neutrality.
4, to obtain peroxide value through vacuum hydro-extraction be the refining rapeseed oil of 0.98 meq/kg to oil phase.
Two, embodiment 2:
1, reduction: get the soybean oil 100g that peroxide value is 19.5 meq/kg, be heated to 80 DEG C, stir, then 8g gallic acid is joined in oil, insulation, continues to stir 8h, carries out reduction reaction, obtains the oil solution after reduction.
2, neutralization: to add 100mL mass concentration be 5%NaOH solution in the oil solution after reduction, stirs 30 min under the envrionment temperature of 50 DEG C, and stratification, discharges water waste liquid, oil phase processing to be purified.
3, purifying: add 50mL mass concentration 8%NaCl solution agitator treating under the envrionment temperature of 40 DEG C in oil phase, centrifugal point of oil-yielding stratum, repeats above-mentioned washing process, until the water separating is neutrality.
4, to obtain peroxide value through vacuum hydro-extraction be 0.88 meq/kg refined soybean oil to oil phase.
Claims (2)
1. reduce a method for superoxide in vegetables oil, comprise reduction reaction, neutralization reaction, and purification step;
It is characterized in that:
Described reduction reaction is: vegetables oil and gallic acid are blended under 50～90 DEG C of temperature condition and carry out reduction reaction, obtain the oil solution after reduction; The mass ratio that feeds intake of described vegetables oil and gallic acid is 10 ︰ 0.1～2;
Described neutralization reaction is: be 5% the NaOH aqueous solution to adding mass concentration in the oil solution after reduction, stir 30 min under the envrionment temperature of 40～50 DEG C, then stratification, discharges water waste liquid, obtains oil phase; The NaOH aqueous solution adding and the mass ratio of vegetables oil are 0.1～1 ︰ 10;
Described purifying is: be 5～10% the NaCl aqueous solution to adding mass concentration in oil phase, and agitator treating under the envrionment temperature of 30～50 DEG C, then centrifugal point of oil-yielding stratum, repeats above-mentioned washing process, until the water separating is neutrality; Oil phase obtains refined plant oil through vacuum hydro-extraction.
2. reduce according to claim 1 the method for superoxide in vegetables oil, while it is characterized in that described purifying, the mass ratio that feeds intake of vegetables oil and the NaCl aqueous solution is 10 ︰ 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310268638.9A CN103289820B (en) | 2013-07-01 | 2013-07-01 | Method for reducing peroxide in plant oil |
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| CN201310268638.9A CN103289820B (en) | 2013-07-01 | 2013-07-01 | Method for reducing peroxide in plant oil |
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| CN103289820A CN103289820A (en) | 2013-09-11 |
| CN103289820B true CN103289820B (en) | 2014-07-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9868917B2 (en) * | 2013-04-11 | 2018-01-16 | Jeffery Thompson | Mechanically enhanced separation of reaction products in biodiesel production |
| CN106916629B (en) * | 2015-12-28 | 2021-03-05 | 丰益(上海)生物技术研发中心有限公司 | Treatment method of color reversion grease |
| CN108277499A (en) * | 2018-05-02 | 2018-07-13 | 合肥博创机械制造有限公司 | A kind of rust remover and preparation method thereof for mechanical equipment |
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| JPS5618681A (en) * | 1979-07-23 | 1981-02-21 | Pola Chem Ind Inc | Prevention of photo-oxidation of fat, oil and surfactant |
| CN1249904A (en) * | 1998-10-05 | 2000-04-12 | 毛嶙晟 | Composite edible health fish oil |
| CN101717695B (en) * | 2009-11-13 | 2011-11-23 | 广东亿超生物科技有限公司 | Method for effectively reducing peroxidation value of nature fats |
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