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Method for removing plasticizer in natural vitamin E

A natural vitamin and plasticizer technology, applied in the field of plasticizer removal, can solve the problems of plasticizer and other problems, and achieve the effect of strong operability, easy operation and low energy consumption

Active Publication Date: 2016-01-13
NINGBO DAHONGYING BIO ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention proposes a method for removing plasticizers in natural vitamin E, which solves the problem of plasticizers in extracting natural vitamin E in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Use a balance to accurately weigh 100g of natural vitamin E (replaced by "VE" below), heat it in a 200ml absolute ethanol water bath until it is completely dissolved, then weigh 30g of 30% NaOH solution, dissolve it in the VE solution, and then add 3g The natural vitamin C prevents the oxidation of VE. Among them, vitamin C can be added to prevent the oxidation of VE.

[0036] The mixed solution was transferred to a three-necked flask, protected by nitrogen gas, and saponified by heating to reflux for 1 h.

[0037] After 1 hour, transfer the saponified solution to a large beaker, pickle it with 10% sulfuric acid aqueous solution to pH<7, transfer the saponified solution to a separatory funnel, and wash it with hot water three times. Separate the moisture in the oil layer, and take the filtrate oil layer.

[0038] Pour the dehydrated VE oil layer into a rotary evaporator, distill under reduced pressure, and distill off the ethanol and trace residual water contained in ...

Embodiment 2

[0042] Accurately weigh 100g of natural vitamin E (replaced by "VE" below) with a balance, heat it in a 200ml anhydrous methanol water bath until it is completely dissolved, then weigh 30g of 30% NaOH solution, dissolve it in the VE solution, and add 3g to it The natural vitamin C prevents the oxidation of VE. Among them, vitamin C can be added to prevent the oxidation of VE.

[0043] The mixed solution was transferred to a three-necked flask, protected by nitrogen gas, and saponified by heating to reflux for 1 h.

[0044] After 1 hour, transfer the saponified solution to a large beaker, pickle it with 10% sulfuric acid aqueous solution to pH<7, transfer the saponified solution to a separatory funnel, and wash it with hot water for 5 times. Separate the moisture in the oil layer, and take the filtrate oil layer.

[0045] Pour the dehydrated VE oil layer into a rotary evaporator, distill under reduced pressure, and distill off the methanol and trace residual water contained i...

Embodiment 3

[0049]Accurately weigh 100g of natural vitamin E (replaced by "VE" in the following) with a balance, heat it in a 100ml absolute ethanol water bath until it is completely dissolved, then weigh 30g of 30% KOH solution, and dissolve it in the VE solution. Dissolve in the VE solution, and then add 5g of tert-butylhydroquinone (TBHQ) to it to prevent the oxidation of VE. Among them, vitamin C can be added to prevent the oxidation of VE.

[0050] The mixed solution was transferred to a three-necked flask, protected by nitrogen gas, and saponified by heating to reflux for 1 h.

[0051] After 1 hour, transfer the saponified solution to a large beaker, pickle it with 10% sulfuric acid aqueous solution to pH<7, transfer the saponified solution to a separatory funnel, and wash it with hot water for 5 times. Separate the water in the oil layer, and take the filtrate oil layer.

[0052] Pour the dehydrated VE oil layer into a rotary evaporator, distill under reduced pressure, and distil...

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PUM

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Abstract

The invention provides a method for removing a plasticizer from natural vitamin E. The method includes: using an organic solvent to dissolve natural vitamin E to obtain a vitamin E solution; adding excess lye into the vitamin E solution; after dissolution of the lye in the vitamin E solution, adding an antioxidant to obtain a mixed solution; heating the mixed solution to perform saponification reflux, thus obtaining a saponified solution; using an acidic solution to conduct pickling on the saponified solution to pH of less than 7; washing the saponified solution with pH of less than 7 repeatedly till neutral; removing water from an oil layer to obtain a dehydrated vitamin E oil layer; and distilling the dehydrated vitamin E oil layer, thus obtaining the natural vitamin E. The method for purification by saponification provided by the invention has the advantages of obvious effect, safety and reliability, excellence, high efficiency and low consumption, and the whole process has the characteristics of simple operation, short cycle, and very strong operability.

Description

technical field [0001] The invention relates to the technical field of removing plasticizers, in particular to a method for removing plasticizers in natural vitamin E. Background technique [0002] Plasticizer is a polymer material additive widely used in industry. Its main component is Phthalic Acid Esters (PAEs for short). Adding this substance in some plastic processing can make the particle molecules spread more evenly. Can increase ductility, elasticity and softness. There are many types of phthalates, which are difficult to degrade, have strong bioaccumulation, and are highly toxic to humans, organisms, and plants. The harm of such pollutants to humans is mainly manifested in carcinogenicity, teratogenicity, and immunity. Inhibition, etc., especially the abnormal human reproductive function is the most eye-catching, and its toxicity is far more than melamine. Due to the toxicity of plasticizers, they are added to food containers and food packaging materials, and ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/72
CPCC07D311/72
Inventor 张源仁王嘉磊肖翔甄洪锋郑东
Owner NINGBO DAHONGYING BIO ENG