CN104705419A - Edible oil plasticizer removing method - Google Patents
Edible oil plasticizer removing method Download PDFInfo
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- CN104705419A CN104705419A CN201310678376.3A CN201310678376A CN104705419A CN 104705419 A CN104705419 A CN 104705419A CN 201310678376 A CN201310678376 A CN 201310678376A CN 104705419 A CN104705419 A CN 104705419A
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- edible oil
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- methyl alcohol
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Abstract
The present invention discloses an edible oil plasticizer removing method which belongs to the technical field of edible oil processing and food safety. The plasticizer removing method uses methanol as solvent, conducts liquid-liquid extraction for the edible oil and separates the methanol and the edible oil after extraction. The plasticizer removing method has high removal efficiency and no plasticizer compositions are detected in the treated edible oils. The plasticizer removing method almost has no effect on other ingredients in the edible oils and the appearance, color, and physical and chemical properties of the treated edible oils are not changed. Besides, the removing method has fast-rate processing and low cost.
Description
Technical field
The present invention relates to a kind of method of the impurity removed in edible oil, particularly a kind of method removing plasticiser in edible oil, belong to edible oil processing and technical field of food safety.
Background technology
Plasticiser is phthalate compound.Phthalic acid ester, as the plasticizer of igelite (PVC) and softening agent by a large amount of for plastics, be also commonly used to the additive etc. of pest repellant, the carrier of pesticide, cosmetics, synthetic rubber, lubricating oil, printing ink in addition.It is the class important compound in environmental hormone class material.Conventional plasticiser has dimethyl ester (DMP), diethyl phthalate (DEP), dipropyl phthalic base ester (DPP), di-n-butyl phthalate (DnBP), o-benzene butyl phthalate ester (DiBP), phthalic acid butyl benzyl ester (BBP), phthalic acid two is base ester (DHP), phthalic acid dioctyl ester (DnOP), phthalic acid ((2 one ethylhexyl) ester (DEHP), diisononyl phthalate (DiNP), diisooctyl phthalate (DiDP).
Plasticiser can be blended in food, air and other material, after entering human body by approach such as digestion, respiratory apparatus, skin contact and feeds, series of chemical in body, play estrogenic effect, become the immeasurable one harm of interference human endocrine, cause human body limb deformity, endocrinopathy, reproductive system pathology, occur the adverse consequences such as sperm quantity minimizing, breast cancer incidence rising.In water at present around us, have the existence of plasticiser in soil, in air, plasticiser has caused global extensive concern to the harm of human health.China has been listed in the blacklist of Food contamination control, and the Ministry of Public Health issues bulletin on June 1st, 2011 and to require that in food DBP residual quantity will will will lower than 1.5 mg/kg lower than the residual quantity of 9.0 mg/kg, DEHP lower than 0.3 mg/kg, DINP residual quantity.
Plasticiser with the forming process of plastics in not completely with plastics macromolecule carbon chain polymerization, but to connect with molecular separating force, keep respective independently chemical property each other.Along with using and the passing of time, can constantly disengage to air, in soil and waters, causing the pollution to environment, thus potential impact is caused to human health.Within 1998, Australia analyzes plastics packed food, and result shows that plasticiser pollutant concentration is from 5 ~ 8160mg/kg.A research of Denmark in 2000 29 kinds of foodstuff samples and 11 kinds of infant foods, wherein the content of DBP is 0.09 ~ 0.19mg/kg.Within 2002,50 kinds of processed foods have been investigated by Japan, find that the average content (ug/kg) of DBP, BBP, DEHP, DINP is respectively 47.7,16.6,749,358ug/kg, domestic Cai Zhi is rung in 2002 and analyzes and researches to the soya-bean oil that market, Shanghai is sold, soybean salad oil, edible blend oil, peanut oil, and in result edible oil, the content of DBP content 2.98 mg/kg, DOP wants 24.16 mg/kg.
The main method removing plasticiser comprises biodegradation, Treatment by Photocatalysis Oxidation, charcoal absorption, ozone oxidation etc., but these methods are not all suitable for the plasticiser removed in edible oil.Also there is no a kind of method effectively removing plasticiser in edible oil at present.
Summary of the invention
The present invention is for providing a kind of method removing plasticiser in edible oil.
A kind of method removing plasticiser in edible oil provided by the present invention, comprise with methyl alcohol is solvent, liquid is carried out to edible oil--liquid extracts, after extraction, methyl alcohol is separated with edible oil, further, edible oil is added in extractor, add methyl alcohol, using circulating pump bottom extractor, extract edible oil to be circulated in extractor upper entrance and to carry out liquid--liquid extracts, further, described liquid--liquid extraction temperature is between room temperature to 64.5 DEG C, further, described liquid--during liquid extraction, the weight of methyl alcohol used is 1 ~ 5 times of edible oil weight, further, use circulating pump circulation time, the total amount of the edible oil be recycled is 1 times of the quantity of edible oil adding extractor to 20 times, further, using circulating pump bottom extractor, extract edible oil to be circulated in extractor and to carry out liquid--liquid extract rear standing 3 little of 36 hours, further, described liquid--liquid extraction times is 1-5 time.
A kind of Advantageous Effects removing the method for plasticiser in edible oil provided by the present invention is: one is that removal efficiency is high: the inventive method removes plasticiser Be very effective in edible oil, effectively can process the edible oil that various plasticiser exceeds standard, detect through national authority mechanism, edible oil after process, does not all detect plasticiser composition; Two is with strong points, the inventive method removes the plasticiser in edible oil targetedly, on other compositions in edible oil substantially without impact, edible oil outward appearance after process, color, physicochemical property all do not change, three is that process is quick, cost is low, the inventive method disposal ability is large, and method is simple, quick, and with low cost.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Detailed description of the invention
In order to better understand and implement technical scheme of the present invention, provide some embodiments of the present invention at this, these embodiments, in order to better explain technical solutions according to the invention, are not formed any form restriction of the present invention.
A kind of method removing plasticiser in edible oil, comprise with methyl alcohol is solvent, liquid is carried out to edible oil--liquid extracts, after extraction, methyl alcohol is separated with edible oil, further, edible oil is added in extractor, add methyl alcohol, using circulating pump bottom extractor, extract edible oil to be circulated in extractor upper entrance and to carry out liquid--liquid extracts, further, described liquid--liquid extraction temperature is between room temperature to 64.5 DEG C, further, described liquid--during liquid extraction, the weight of methyl alcohol used is 1 ~ 5 times of edible oil weight, further, use circulating pump circulation time, the total amount of the edible oil be recycled is 1 times of the quantity of edible oil adding extractor to 20 times, further, using circulating pump bottom extractor, extract edible oil to be circulated in extractor and to carry out liquid--liquid extract rear standing 3 little of 36 hours, further, described liquid--liquid extraction times is 1-5 time.
The present invention utilizes plasticiser and the edible oil difference in physicochemical property to isolate the plasticiser in edible oil, the present invention take methyl alcohol as solvent, liquid is carried out to edible oil--liquid extracts, the plasticiser in edible oil is made to be extracted in methyl alcohol, separation of methanol and edible oil again, through repeatedly such liquid--liquid extraction process, thus the residual quantity of plasticiser in edible oil is reduced in safe range.Accompanying drawing is shown in concrete technological process, and the present invention is further elaborated by reference to the accompanying drawings, and after methanol solvate and the edible oil be extracted are squeezed into extractor, methyl alcohol and edible oil meeting layering, methyl alcohol is on top, and edible oil is in bottom.With pump, the edible oil of bottom is got to tank top, be sprayed at above methyl alcohol, plasticiser in the process that edible oil precipitates downwards by methanol layer in edible oil can be extracted in methyl alcohol, so with after pump circulation certain hour, leaves standstill and allows edible oil fully be deposited to tank bottom and methyl alcohol layering.Get in precipitation tank with pump by edible oil, heating edible oil makes the part methanol gasifying dissolved in oil be separated with edible oil, and methanol gas enters methanol condenser, flows into methanol tank, recycle after being condensed into liquid.After edible oil in extractor is all got, got to by the methyl alcohol in tank in methyl alcohol evaporator, heating makes methanol gasifying evaporate, and methanol vapor enters in methanol condenser, flows into methanol tank, recycle after being condensed into liquid.After methyl alcohol in methyl alcohol evaporator is evaporated, the raffinate containing higher plasticiser is discharged from bottom.
If content of plasticizing agent is higher in raw material edible oil, can above-mentioned treated edible oil be returned in extractor from precipitation tank, carry out second time and extract process.Same method also can carry out third time, the 4th time, the 5th time process, and till the residual quantity of plasticiser in edible oil reaches requirement, extracting methanol usage in above-mentioned extraction is each time 1-5 times that is extracted edible oil.
In above-mentioned processing procedure, the temperature that edible oil and methyl alcohol process in extractor is between room temperature to methyl alcohol boiling temperature 64.5 DEG C.Use pump circulation time, the total amount of the oil be recycled is 1 times of edible oil in tank to 20 times, is namely 1 to 20 times of edible oil in tank by the edible oil total amount getting to tank top, and the rear time of repose that circulated is 3 little of 36 hours.
Embodiment 1:
1. mixing of materials: weigh peanut oil 500kg(plasticiser index after testing, detecting DBP residual quantity is 0.93 mg/kg, BBP content is 0.35 mg/kg, DiDP content is 0.52 mg/kg) add the methyl alcohol of equivalent, extract peanut oil with pump out from extractor bottom and get to tank top, be sprayed onto on methanol layer, metering peanut oil is recycled 20 times;
2. feed separation: then leave standstill 5 hours, allow peanut oil and the complete multi_layer extraction of methyl alcohol;
3. edible oil precipitation: peanut oil is got in precipitation tank with pump, heating peanut oil makes the part methanol gasifying dissolved in oil be separated with oil;
4. reclaim methyl alcohol: the methanol gas after separation enters methanol condenser, flow into methanol tank after being condensed into liquid, recycle.After peanut oil in extractor is all got, got to by the methyl alcohol in tank in methyl alcohol evaporator, heating makes methanol gasifying evaporate, and methanol vapor enters in methanol condenser, flows into methanol tank, recycle after being condensed into liquid.After methyl alcohol in methyl alcohol evaporator is evaporated, the raffinate containing higher plasticiser is discharged from bottom;
5. return in extractor by above-mentioned treated peanut oil from precipitation tank, repeat 1. 2. 3. 4. step, carry out four extraction process, in peanut oil, namely the residual quantity of plasticiser reaches requirement.
Embodiment 2:
1. mixing of materials: weigh peanut oil 500kg(plasticiser index after testing, detecting DBP residual quantity is 0.63 mg/kg, BBP content is 0.15 mg/kg, DiDP content is 0.22 mg/kg) add the methyl alcohol of 2 times of weight, extract peanut oil with pump out from extractor bottom and get to tank top, be sprayed onto on methanol layer, metering peanut oil is recycled 15 times;
2. feed separation: then leave standstill 10 hours, allow peanut oil and the complete multi_layer extraction of methyl alcohol;
3. edible oil precipitation: peanut oil is got in precipitation tank with pump, heating peanut oil makes the part methanol gasifying dissolved in oil be separated with oil;
4. reclaim methyl alcohol: the methanol gas after separation enters methanol condenser, flow into methanol tank after being condensed into liquid, recycle.After peanut oil in extractor is all got, got to by the methyl alcohol in tank in methyl alcohol evaporator, heating makes methanol gasifying evaporate, and methanol vapor enters in methanol condenser, flows into methanol tank, recycle after being condensed into liquid.After methyl alcohol in methyl alcohol evaporator is evaporated, the raffinate containing higher plasticiser is discharged from bottom;
5. return in extractor by above-mentioned treated peanut oil from precipitation tank, repeat 1. 2. 3. 4. step, carry out three extraction process, in peanut oil, namely the residual quantity of plasticiser reaches requirement.
Embodiment 3:
1. mixing of materials: weigh rapeseed oil 500kg(plasticiser index after testing, detecting DBP residual quantity is 0.56mg/kg, BBP content is 0.32 mg/kg, DiDP content is 038 mg/kg) add the methyl alcohol of 5 times of weight, extract rapeseed oil with pump out from extractor bottom and get to tank top, be sprayed onto on methanol layer, metering rapeseed oil is recycled 15 times;
2. feed separation: then leave standstill 10 hours, allow peanut oil and the complete multi_layer extraction of methyl alcohol;
3. edible oil precipitation: rapeseed oil is got in precipitation tank with pump, heating rapeseed oil makes the part methanol gasifying dissolved in oil be separated with oil;
4. reclaim methyl alcohol: the methanol gas after separation enters methanol condenser, flow into methanol tank after being condensed into liquid, recycle.After rapeseed oil in extractor is all got, got to by the methyl alcohol in tank in methyl alcohol evaporator, heating makes methanol gasifying evaporate, and methanol vapor enters in methanol condenser, flows into methanol tank, recycle after being condensed into liquid.After methyl alcohol in methyl alcohol evaporator is evaporated, the raffinate containing higher plasticiser is discharged from bottom;
5. return in extractor by above-mentioned treated rapeseed oil from precipitation tank, repeat 1. 2. 3. 4. step, carry out four extraction process, in rapeseed oil, namely the residual quantity of plasticiser reaches requirement.
Embodiment 4:
1. mixing of materials: weigh soybean oil 500kg(plasticiser index after testing, detecting DBP residual quantity is 0.76mg/kg, BBP content is 0.19 mg/kg, DiDP content is 0.46 mg/kg) add the methyl alcohol of 3 times of weight, extract soybean oil with pump out from extractor bottom and get to tank top, be sprayed onto on methanol layer, metering soybean oil is recycled 15 times;
2. feed separation: then leave standstill 10 hours, allow peanut oil and the complete multi_layer extraction of methyl alcohol;
3. edible oil precipitation: soybean oil is got in precipitation tank with pump, heating soy oil makes the part methanol gasifying dissolved in oil be separated with oil;
4. reclaim methyl alcohol: the methanol gas after separation enters methanol condenser, flow into methanol tank after being condensed into liquid, recycle.After soybean oil in extractor is all got, got to by the methyl alcohol in tank in methyl alcohol evaporator, heating makes methanol gasifying evaporate, and methanol vapor enters in methanol condenser, flows into methanol tank, recycle after being condensed into liquid.After methyl alcohol in methyl alcohol evaporator is evaporated, the raffinate containing higher plasticiser is discharged from bottom;
5. return in extractor by above-mentioned treated soybean oil from precipitation tank, repeat 1. 2. 3. 4. step, carry out five extraction process, in soybean oil, namely the residual quantity of plasticiser reaches requirement.
After describing various specific embodiment of the present invention above in detail, those of ordinary skill in the art should be well understood to, according to the various common practise of this area, can carry out various equivalent variations, equivalent replacement according to thinking of the present invention or simply revise, these all should belong to the scope of technical solution of the present invention.
Claims (7)
1. remove a method for plasticiser in edible oil, it is characterized in that: comprising with methyl alcohol is solvent, carries out liquid to edible oil--liquid extracts, and the plasticiser in edible oil is extracted in methyl alcohol, then is separated with edible oil by methyl alcohol.
2. a kind of method removing plasticiser in edible oil according to claim 1, it is characterized in that: edible oil is added in extractor, adding methyl alcohol, use circulating pump bottom extractor, extract edible oil and be circulated in extractor upper entrance and carry out liquid--liquid extracts.
3. a kind of method removing plasticiser in edible oil according to claim 1, is characterized in that: described liquid--liquid extraction temperature is between room temperature to 64.5 DEG C.
4. a kind of method removing plasticiser in edible oil according to claim 1, is characterized in that: described liquid--during liquid extraction, the weight of methyl alcohol used is 1 ~ 5 times of edible oil weight.
5. a kind of method removing plasticiser in edible oil according to claim 2, is characterized in that: use circulating pump circulation time, and the total amount of the edible oil be recycled is 1 times of the quantity of edible oil adding extractor to 20 times.
6. a kind of method removing plasticiser in edible oil according to claim 2, is characterized in that: use circulating pump bottom extractor, extract edible oil and be circulated in extractor and carry out liquid--liquid extract rear standing 3 little of 36 hours.
7. a kind of method removing plasticiser in edible oil according to the arbitrary claim of claim 1 to 6, is characterized in that: described liquid--liquid extraction times is 1-5 time.
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| CN201310678376.3A CN104705419A (en) | 2013-12-14 | 2013-12-14 | Edible oil plasticizer removing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105795005A (en) * | 2016-04-09 | 2016-07-27 | 江西阁皂山天然食品有限公司 | Preparation method of edible oil |
| CN105925371A (en) * | 2016-05-19 | 2016-09-07 | 河南省筑城粮油机械工程有限公司 | Edible-oil processing technology for decreasing content of trans-fatty acid and removing plasticizer |
| CN107216946A (en) * | 2016-03-22 | 2017-09-29 | 浙江医药股份有限公司新昌制药厂 | The minimizing technology of plasticiser in a kind of fish oil |
| CN111296566A (en) * | 2020-04-03 | 2020-06-19 | 黑龙江赫益乳业科技有限公司 | Plasticizing agent degradation device in whey |
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| CN105925371A (en) * | 2016-05-19 | 2016-09-07 | 河南省筑城粮油机械工程有限公司 | Edible-oil processing technology for decreasing content of trans-fatty acid and removing plasticizer |
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| CN111296566A (en) * | 2020-04-03 | 2020-06-19 | 黑龙江赫益乳业科技有限公司 | Plasticizing agent degradation device in whey |
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