Cyclic Lipopeptide Purification via Macroporous Resin
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Solution Overview
Problem
Existing methods for purifying the cyclolipopeptide compound of Formula I are environmentally harmful due to the use of large amounts of organic solvents and silica gel, making them unsuitable for large-scale production and inadequate in achieving high purity.
Innovation Solution
A process involving the use of macroporous adsorption resins, where the fermentation liquid is extracted with an organic solvent, diluted, and then loaded onto the resin, followed by washing and elution with water or organic solvents, reducing solvent usage and improving purity without silica gel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional purification methods using acetone extraction, ethyl acetate washing, n-butanol extraction, and silica gel chromatography are employed, then the compound of Formula I can be purified, but large amounts of organic solvents and silica gel are consumed, causing environmental pollution and health hazards
Solution Approach 1:
The patent extracts and removes the harmful components (silica gel and large amounts of organic solvents) from the purification process. Instead of using silica gel chromatography, the invention employs a filtration step that eliminates silica gel entirely. The organic solvent system is replaced with water-based extraction using n-butanol, significantly reducing solvent consumption and environmental impact while maintaining effective purification of the compound of Formula I
Solution Approach 2:
The patent changes the fundamental parameters of the purification system by transitioning from organic solvent-based extraction (acetone, ethyl acetate) to a water-based system with n-butanol. This parameter change reduces the toxicity and environmental harm of the process while achieving the same purification objective. The flow rate parameter is also optimized to 0.1-10 column volumes per hour to enhance efficiency
2Manufacturing precision
If traditional purification methods with multiple extraction steps and silica gel chromatography are used, then purification can be achieved, but the process is complex and not suitable for large-scale production
Solution Approach 1:
The patent segments the purification process into distinct, simplified stages: filtration to remove mycelia, water extraction, n-butanol extraction, concentration, and silica gel-free filtration. This segmentation eliminates the need for complex silica gel chromatography while maintaining purification effectiveness. Each step is independent and can be easily scaled up for industrial production
Solution Approach 2:
The patent replaces expensive and environmentally persistent silica gel with a disposable filtration approach using common filter materials. This substitution simplifies the process equipment needed and makes the method more suitable for large-scale production where cost-effectiveness and ease of operation are critical
3Manufacturing precision
If traditional purification methods are employed, then the compound can be obtained, but great amounts of organic solvents are needed, increasing production costs and environmental burden
Solution Approach 1:
The patent fundamentally changes the solvent system parameters by replacing acetone and ethyl acetate with water and n-butanol. This substitution reduces the total volume of organic solvents required while maintaining effective extraction and purification. The water-based system is more environmentally friendly and reduces disposal costs
Solution Approach 2:
The patent extracts and eliminates the need for large volumes of organic solvents by implementing a concentrated n-butanol extraction step followed by efficient concentration. This approach minimizes solvent usage while achieving high purity, directly addressing the issue of excessive solvent consumption in traditional methods
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 method effectively reduces environmental pollution, lowers production costs, and achieves high purification yields, facilitating large-scale production of high-purity cyclolipopeptide compounds.
Implementation Method 1
loading extract 2 onto a macroporous adsorption resin
Implementation Method 2
the fermentation liquid is extracted by acetone
Data Source
Figure 1~2
AI summary
A method for purifying a cyclic lipopepteide or a salt thereof is provided. The method comprises the steps: (1) extracting a fermentation broth containing a compound of formula I or a salt thereof, to obtain an extract 1 after filtration or centrifugation; (2) diluting or concentrating the extract 1 under vacuum to decrease the content of the organic solvent, to obtain an extract 2; (3) loading the extract 2 onto a macroporous absorption resin; (4) washing the macroporpous adsorption resin with water, an organic solvent, or a mixture of water and an organic solvent as a washing solution; and (5) eluting the compound of formula I off from the macroporous adsorption resin with water, an organic solvent, or a mixture of water and an organic solvent as a washing solution as an eluant. Compared with the prior art, the purification method has the advantages that fewer organic solvent is used, no silica gel is used, the harm to the environment is less, and the purity of the collected compound of formula I is improved.