Botanical Extract Purification via Supercritical CO2 and Macroporous Resin
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Solution Overview
Problem
The traditional production process of Jinxuan Hemorrhoid Washing Powder results in unclear active material basis, imperfect quality control, unstable drug efficacy, and high dosages, with environmental pollution and high costs due to the water-adding decoction method used for extracting active ingredients from honeysuckle, schizonepeta, and purslane.
Innovation Solution
A method involving supercritical CO2 extraction followed by percolation with an alcohol aqueous solution and purification using macroporous resin to obtain high contents of flavones, saponins, and organic acids, reducing impurities and energy consumption while controlling environmental pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If water-adding decoction method is used for extraction, then the extraction process is simple, but the extracts contain many impurities and active ingredients are lost
Solution Approach 1:
The patent introduces macroporous resin as an intermediary substance between the extraction process and final product. The resin selectively adsorbs active ingredients (flavones, saponins, organic acids) from the extraction solvent, separating them from impurities. This mediator enables high-purity extraction without requiring complex multi-step purification processes, thus resolving the contradiction between simplicity and purity.
Solution Approach 2:
The patent utilizes macroporous resin, a porous material with specific pore structures and surface properties, to selectively adsorb active components from the extraction mixture. The porous structure provides large surface area for adsorption while the chemical properties of the resin enable selective binding of target compounds, achieving high-purity extraction through a single straightforward step.
2Ease of manufacture
If water-adding decoction method is used, then extraction process is simple, but active ingredients are lost and efficacy is unstable
Solution Approach 1:
Macroporous resin acts as a selective intermediary that preferentially binds active ingredients over impurities. The resin's specific chemical properties enable it to capture flavones, saponins, and organic acids with high selectivity, ensuring consistent recovery of efficacy substances and stable drug performance across batches.
Solution Approach 2:
The patent changes the extraction parameters by using alcohol-containing solvents instead of pure water, and controls the adsorption conditions (flow rate, resin type, solvent composition) to optimize the recovery of active ingredients. These parameter adjustments ensure high and stable extraction efficiency while maintaining process simplicity.
3Ease of manufacture
If traditional extraction method is used, then production cost is low, but environmental pollution is high and energy consumption is high
Solution Approach 1:
The patent replaces traditional high-energy extraction methods (decoction requiring prolonged heating) with a low-energy adsorption-based extraction using macroporous resin. This substitution eliminates the need for high-temperature processing, significantly reducing energy consumption and environmental pollution while maintaining production efficiency and low cost.
Solution Approach 2:
The macroporous resin performs self-selective adsorption of active ingredients from the extraction mixture without requiring additional energy input or complex equipment. The process utilizes the inherent adsorption properties of the resin material, enabling passive separation that reduces both energy consumption and environmental impact while maintaining high extraction efficiency.
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 process achieves high active substance content, substantial anti-inflammatory and pain-relieving effects, and complies with modernization requirements of the Chinese medicine industry by simplifying extraction and purification, reducing costs, and enhancing safety.
Implementation Method 1
the extracted solution is purified through a macroporous resin to obtain relatively high contents of flavones, saponins and organic acids active substance parts
Data Source
AI summary
A preparation method for extractive botanicals includes: (A) honeysuckle, schizonepeta, and purslane in a powder are mixed, ground, and passed through a mesh; the medicinal powder obtained from supercritical extraction is soaked in alcohol, then undergoes percolation extraction, and the percolate is collected; (B) the alcohol percolate is concentrated, left stand, and suction filtrated to obtain a filtrate; (C) the filtrate macroporously adsorbs to a resin column at a flow velocity, is then removed of impurity by water washing, and undergoes elution with alcohol to obtain an alcohol eluent; (D) alcohol is recovered from the eluent, the remaining liquid is concentrated, and the concentrated liquid is dried to obtain the extractive of botanicals. The total content of flavones, saponins, and organic acids exceeds 70%. The extractive has substantial anti-inflammatory and pain relieving effects.