Vitamin E Purification via Series Anion Exchange Columns
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Solution Overview
Problem
Current methods for producing vitamin E concentrated fractions face challenges such as low recovery rates and purity due to thermal decomposition and contamination, especially when processing tocotrienol from rice bran or palm, and require large amounts of solvents for purification, making the process costly and inefficient.
Innovation Solution
A method involving a series of strongly basic anion exchange columns to adsorb and desorb vitamin E, utilizing the differing adsorption properties of vitamin E and free fatty acids to achieve high purity, with a desorption solution used to recover vitamin E from the columns, and a subsequent weakly basic anion exchange step for further purification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multistage molecular distillation method is used to produce vitamin E concentrated fraction, then separation of components is achieved, but thermal decomposition occurs and contamination from components with close separation properties reduces recovery rate and purity to about 50 mass %
Solution Approach 1:
The patent replaces the thermal distillation process with a chromatographic separation process using silica gel column chromatography. This substitution eliminates thermal decomposition of tocotrienol while achieving effective separation of vitamin E components from impurities like free fatty acids and sterols, thereby simultaneously improving purity and recovery rate.
Solution Approach 2:
The patent changes the separation mechanism from thermal-based (distillation) to adsorption-based (chromatography). By using silica gel as the stationary phase and appropriate eluents, the separation is achieved through differential adsorption properties rather than boiling point differences, preventing thermal damage to tocotrienol.
2Manufacturing precision
If chromatographic separation method is used for high-purification of vitamin E, then purity is improved, but large amount of eluent is required and elution time is long, increasing production costs and environmental burden
Solution Approach 1:
The patent uses a relatively small amount of eluent that is sufficient to achieve the required purity level, rather than using excessive amounts to ensure complete elution. The elution process is optimized to stop when the target purity is reached, reducing solvent consumption and processing time.
Solution Approach 2:
The patent employs silica gel, a porous material with high surface area and controlled pore structure, as the stationary phase. This provides efficient adsorption sites for separating vitamin E components, improving separation efficiency and reducing the volume of eluent needed to achieve complete elution.
3Manufacturing precision
If multistage molecular distillation method is applied to deodorizer distillate including tocotrienol, then separation is attempted, but low thermal stability of tocotrienol causes very low recovery rate and purity of several tens of percent by mass
Solution Approach 1:
The patent replaces thermal distillation with chromatographic separation using silica gel column chromatography. This substitution is particularly beneficial for tocotrienol which has low thermal stability, as it achieves effective separation without exposing the compound to high temperatures that would cause decomposition and loss of activity.
Solution Approach 2:
The chromatographic process operates under ambient or controlled conditions that protect tocotrienol from thermal degradation. The use of room temperature or low temperature elution conditions, combined with inert or oxygen-excluded environments during the process, preserves the integrity and activity of tocotrienol.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly increases the recovery rate and purity of vitamin E, reducing thermal decomposition and solvent use, resulting in a more efficient and cost-effective production process with high-purity vitamin E fractions.
Implementation Method 1
a method for producing a vitamin E concentrated fraction by adsorbing vitamin E included in a raw material on a strongly basic anion exchanger under mild conditions of 50° C. under atmospheric pressure
Implementation Method 2
desorbing the vitamin E from the ion exchanger
Data Source
AI summary
A vitamin E production method and a vitamin E production device which can highly purify vitamin E in a vitamin E concentrated fraction are provided. A raw oil supply section supplies a raw oil to a series column in which two or more columns including a strongly basic anion exchanger are coupled in series to adsorb vitamin E included in the raw oil on the strongly basic anion exchanger of at least one column from among the series column. A desorption solution supply section supplies a desorption solution to a column on which vitamin E has been adsorbed to desorb vitamin E from the strongly basic anion exchanger of the column.