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Method for removing phthalate plasticizer in edible oil

A technology of phthalic acid and edible oil, applied in the direction of edible oil/fat, application, food science, etc., can solve pollution and other problems, and achieve the effect of easy operation, low cost and good removal effect

Pending Publication Date: 2021-07-16
HUNAN UNIV OF CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for removing phthalate plasticizers in edible oil to solve the technical problem of food safety caused by the pollution of edible oil by phthalates in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for removing phthalate plasticizers in edible oil, wherein the content of DINP (diisononyl phthalate) is 25.3mg / kg; the content of DBP (dibutyl phthalate) The content is 15.65mg / kg; the content of DEHP (phthalate diester) is 64.84mg / kg, and the removal method includes the following steps:

[0034] 1. Carry out vacuum rectification of 95% ethanol at 30°C, raise the temperature of edible oil to 55°C, then add 100mL of rectified ethanol to the heated 1000mL edible oil, and keep stirring at 55°C 120min, stirring speed is set as 50rpm, obtains mixed solution;

[0035] 2. Add water to the above mixed solution for two consecutive washings. The volume ratio of the added water to edible oil is 20%, the washing temperature is 50°C, the stirring speed is 50 rpm during washing, and the oil is obtained by washing for 20 minutes;

[0036] 3. Repeat steps 1 and 2 once;

[0037] 4. Import the oil obtained after water washing into a vacuum decolorization tank, vacuum dehydrat...

Embodiment 2

[0042] A method for removing phthalate plasticizers in edible oil, wherein the content of DINP is 12.61 mg / kg; the content of DBP is 5.32 mg / kg; the content of DEHP is 28.04 mg / kg, the removal method Include the following steps:

[0043] 1. Carry out vacuum rectification of butanol with a concentration of 95% at 30°C, raise the temperature of edible oil to 55°C, then add 50mL of butanol after rectification to the heated 1000mL edible oil, stir at constant temperature for 120min, stir The speed is set at 50rpm to obtain a mixed solution;

[0044] 2. Add water to the above mixed solution for two consecutive water washes, the volume ratio of the added water to edible oil is 15%, the temperature of water washing is 30°C, the stirring speed during water washing is 50rpm, and the water washes for 20min to obtain the oil product;

[0045] 3. Import the oil obtained after washing into the vacuum decolorization tank, vacuum dehydrate at 120°C, the vacuum gauge pressure is 0.08MPa, and...

Embodiment 3

[0050] A method for removing phthalate plasticizers in edible oil, wherein the content of DINP is 8.7mg / kg; the content of DBP is 3.52mg / kg; the content of DEHP is 9.26mg / kg, the removal method Include the following steps:

[0051] 1. Carry out vacuum rectification of cyclohexanol with a concentration of 95% at 40°C, raise the temperature of edible oil to 30°C, then add 10mL of rectified cyclohexanol to the heated 1000mL edible oil, and stir at constant temperature for 120min , and the stirring speed was set at 50rpm to obtain a mixed solution;

[0052] 2. Add water to the above mixed solution for two consecutive washings. The volume ratio of the added water to edible oil is 15%, the temperature of washing is 70°C, the stirring speed is 50 rpm during washing, and the oil is obtained by washing for 20 minutes;

[0053] 3. Import the oil obtained after washing into the vacuum decolorization tank, vacuum dehydrate at 120°C, the vacuum gauge pressure is 0.08MPa, and complete the ...

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Abstract

The invention provides a method for removing a phthalate plasticizer in edible oil. The content of the phthalate plasticizer is less than or equal to 65 mg / kg. The method comprises the following steps of heating the edible oil, adding an auxiliary agent into the edible oil, and dissolving the phthalate plasticizer in the edible oil in the auxiliary agent to obtain a mixed solution, wherein the volume ratio of the auxiliary agent to the edible oil is 0.5%-12%, adding water into the obtained mixed solution for washing to obtain an oil product, and dehydrating and deodorizing the obtained oil product to obtain finished oil. According to the removal method, the phthalate plasticizer in the edible oil can be dissolved in the aid by adding a small amount of the auxiliary agent, and then the auxiliary agent and the plasticizer are removed by a water washing method; the method can be completed in a refining process of the edible oil, does not need other additional equipment, is low in cost and easy to operate, does not destroy nutritional ingredients in the edible oil, and has a good removal effect.

Description

technical field [0001] The invention relates to the technical field of edible oil processing, in particular to a method for removing phthalate plasticizers in edible oil. Background technique [0002] As plasticizers, phthalates can improve the elasticity and plasticity of plastics, and are widely used in daily life; when they are used as plasticizers, they are usually connected by van der Waals force or hydrogen bonds between polymer macromolecules , Polar or partly polar, generally a liquid with a high boiling point, low volatility and good miscibility with polymers, or a solid with a low melting point; generally insoluble in water and other polar substances, easily soluble in organic solvents , is a fat-soluble substance, so it is easy to migrate from the polymer to food, and long-term use will cause potential harm to the human body. For example, phthalates can enter the human body through skin contact, respiratory tract, digestive system, etc. Multiple systems of the bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00A23D9/04
CPCC11B3/001C11B3/006A23D9/04
Inventor 孟蕾覃功信
Owner HUNAN UNIV OF CHINESE MEDICINE
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