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A method for removing phthalates in animal and vegetable oils

A technology of animal and vegetable oil and phthalic acid, which is applied in the direction of oil/fat refining and fat production, can solve problems such as waste of resources, and achieve the effect of simple and feasible process

Active Publication Date: 2011-12-28
SUN YAT SEN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the production process of many foods, medicines or cosmetics, they are contaminated with phthalates due to contact with plastic products, rubber products or packaging materials rich in phthalates, resulting in a large amount of raw materials and animal and plant essential oils, food , medicines and cosmetics products were found to contain excessive phthalates and were discarded, resulting in a great waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Mix walnut kernel oil contaminated with phthalates, which is detected to contain DEHP30mg / kg, DINP14mg / kg, DBP20mg / kg, and 60% cyclohexanone as a stripping agent, and then fully stir for 1 minute. The ratio of kernel oil and 60% cyclohexanone is 1: 8 (weight ratio), makes the phthalates substance contained in the walnut kernel oil be fully dissolved and adsorbed in the stripping agent;

[0022] 2. Stand still, and adopt the usual industrial cooling method to accelerate the layered separation of walnut kernel oil and stripping agent. Separation of stripping agent cyclohexanone with dissolved and adsorbed phthalates;

[0023] 3, the walnut kernel oil that step 2 is separated is repeated four times of stripping process again by above step 1 and 2, obtains the walnut kernel oil that further removes phthalates;

[0024] 4. Use the usual industrial vacuum distillation method to remove the residual stripping agent cyclohexanone in walnut kernel oil. The vacuum degree used ...

Embodiment 2

[0026] 1. Mix the Amaranth oil polluted with phthalates that is detected to contain DEHP50mg / kg, DINP13mg / kg, and DBP17mg / kg, and 70% methanol as a stripping agent, and then fully stir for 10 minutes. The ratio of grass oil and 70% methanol is 1: 20 (weight ratio), so that the phthalates contained in Amaranth oil are fully dissolved and adsorbed in the stripping agent;

[0027] 2. Leave it to stand to separate the amaranth oil from the stripping agent methanol that dissolves and absorbs phthalates, and adopt the usual industrial siphon method to separate the amaranthus oil and the lower layer of the amaranthus oil After stratification, the dissolved and adsorbed stripping agent methanol that floats on the upper layer is separated from phthalates;

[0028] 3. Repeat the back extraction process for five times by the step 2 separated Amaranth oil according to the above steps 1 and 2 to obtain the Amaranth oil further removed from phthalates;

[0029] 4. Use the usual industrial ...

Embodiment 3

[0031] 1. Mix lycopene, which is detected to contain DEHP5mg / kg, DINP8mg / kg, and DBP10mg / kg, which is contaminated with phthalates, and 70% butanol as a stripping agent, and then fully stir for 3 minutes. The ratio of lycopene to 70% butanol is 1:8 (weight ratio), so that the phthalates contained in lycopene are fully dissolved and adsorbed in the stripping agent;

[0032] 2. Stand still, and use the usual industrial separating funnel separation method to separate the lycopene that sinks in the lower layer after mixing from the stripping agent butanol that dissolves and absorbs phthalates in the upper layer;

[0033] 3. The lycopene separated in step 2 is repeatedly subjected to the back extraction process four times according to the above steps 1 and 2 to obtain lycopene for further removal of phthalates;

[0034] 4. Use the usual industrial vacuum distillation method to remove the residual stripping agent butanol in lycopene. The vacuum distillation adopts the conditions of ...

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PUM

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Abstract

The invention relates to a method for removing phthalates from animal fat and vegetable oil, comprising the following steps: using a solvent which can dissolve and absorb the phthalates as a stripping agent, uniformly mixing the animal fat and vegetable oil containing the phthalates with the stripping agent, letting the phthalates in the animal fat and vegetable oil be dissolved and absorbed in the stripping agent by utilizing the dissolving and absorbing function of the stripping agent to the phthalates, then separating the stripping agent from the animal fat and vegetable oil to obtain the vegetable fat without the phthalates. Through detection, in the animal fat and vegetable oil processed by the method, the detectable amount of the phthalates is reduced to below 0.3 mg / kg, and the stripping agent is not detected.

Description

technical field [0001] The invention relates to a method for removing phthalates in animal and vegetable oils. Background technique [0002] Phthalates are a class of chemicals that can play a softening role. They are widely used as plasticizers for plastics, rubber and synthetic materials. They are widely used in toys, food packaging, pharmaceutical packaging, wallpapers, cosmetics and detergents, etc. Hundreds of products. Phthalate esters commonly used as plasticizers refer to esters of phthalic acid and alcohols with 4 to 15 carbons, among which di(2-ethyl)hexyl phthalate (DEHP ), dibutyl phthalate (DBP) and diisobutyl phthalate (DIBP) are the most common varieties. [0003] Phthalate esters can cause great harm to the human body, and food and food additives require residual di(2-ethyl)hexyl phthalate (DEHP), diisononyl phthalate ( DINP) and dibutyl phthalate (DBP) maximum detectable amount were 1.5mg / kg, 9.0mg / kg and 0.3mg / kg respectively. During the production proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00
Inventor 刘昕陈海黄晓霓李少松肖健王超刘小卓孙虹霞
Owner SUN YAT SEN UNIV