Continuous Silver-Complex Purification of Polyunsaturated Fatty Acids
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Solution Overview
Problem
Polyunsaturated fatty acids are prone to oxidation, isomerization, and degradation, making them difficult to separate and purify, which hampers their application in health foods and pharmaceuticals.
Innovation Solution
A method using a continuous reactor that involves complexing polyunsaturated fatty acids with a silver salt aqueous solution, followed by sequential cleaning and extraction steps with organic solvents, and finally concentrating and drying to achieve high purity and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If polyunsaturated fatty acid is separated and purified using conventional methods, then purity can be improved, but the fatty acid is prone to oxidation, isomerization, and degradation
Solution Approach 1:
The patent uses silver salt aqueous solution to form a complex with polyunsaturated fatty acid, creating a protected environment that prevents oxidation and degradation. The complexation reaction occurs in an aqueous medium that acts as an inert environment relative to the fatty acid's susceptibility to oxidation, thereby maintaining stability while enabling purification.
Solution Approach 2:
The silver salt acts as an intermediary substance that forms a complex with the polyunsaturated fatty acid. This complex serves as a mediator that allows the fatty acid to be purified without direct exposure to conditions that would cause degradation, enabling separation while preserving integrity.
2Manufacturing precision
If conventional batch purification method is used, then purification can be achieved, but the process is time-consuming and low efficiency
Solution Approach 1:
The patent employs a continuous reactor system where the polyunsaturated fatty acid continuously reacts with silver salt aqueous solution, and the complex continuously passes through extraction and separation stages. This continuous operation eliminates idle time between batches and maintains constant purification action, significantly improving productivity while maintaining high purity.
3Manufacturing precision
If multiple purification steps are performed to achieve high purity, then manufacturing precision improves, but the process complexity increases
Solution Approach 1:
The patent combines complexation, extraction, and separation operations into an integrated continuous process. The silver salt complexation step is merged with the extraction process, where the complex is directly extracted with organic solvent in a continuous flow system, reducing the number of discrete steps and equipment required while achieving high purity.
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
The method effectively purifies polyunsaturated fatty acids, achieving a purity of over 98% and enabling their efficient recycling and application in health foods and pharmaceuticals.
Implementation Method 1
reacting a polyunsaturated fatty acid and a silver salt aqueous solution in the mixing unit
Implementation Method 2
reacting the first aqueous layer and a first organic solvent in the mixing unit, and using the extracting and separating unit to separate a second aqueous layer and a first organic layer
Implementation Method 3
concentrating and drying the second organic layer to obtain a purified polyunsaturated fatty acid
Data Source
AI summary
The present invention relates to a method for purifying polyunsaturated fatty acid using a continuous reactor, and the method comprises: (a) complexing step, (b) cleaning step, (c) extracting step, and (d) concentrating and drying step. The method of the present invention reacts a polyunsaturated fatty acid and a silver salt aqueous solution in a continuous reactor to form a complex of the polyunsaturated fatty acid and silver, and then cleans the complex with a first organic solvent to improve the purity of the complex; afterwards, a second organic solvent is used to extract the purified polyunsaturated fatty acid. The method of the present invention can continuously produce polyunsaturated fatty acids with high yield and high purity.