Botanical Extract Purification Using Ultrapure Water and TFF
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Solution Overview
Problem
The pharmaceutical and cosmetic industries face challenges in standardizing the production of botanical extracts due to the need for varying extraction methods and parameters for different active substances, which complicates the scaling up of processes and results in inconsistent quality and yield.
Innovation Solution
A method combining extraction with ultrapure water and tangential flow filtration (TFF) is used to enrich botanical extracts, allowing for the recovery and purification of active substances without the need for different parameters for each extract, thereby increasing yield, purity, and reducing impurities and drying time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional solid-liquid extraction methods (maceration, percolation) are used with varying parameters for different active substances, then extraction efficiency for specific compounds is improved, but process standardization and scalability are compromised
Solution Approach 1:
The patent applies a universal extraction protocol using ultrapure water as solvent that can be applied to diverse plant materials (leaves, roots, fruits, seeds) without requiring parameter adjustments for different active substances. The standardized process includes fixed parameters: particle size 0.5-2mm, solid-liquid ratio 1:5 to 1:10, extraction temperature 20-40°C, and extraction time 2-4 hours, making the system multi-functional across different botanical sources while maintaining extraction efficiency
Solution Approach 2:
The patent transforms the extraction process by changing the solvent parameter to ultrapure water with resistivity ≥18 MΩ·cm, eliminating the need for organic solvents and their associated parameter optimizations. This parameter change enables a standardized protocol that works across different plant materials while improving extraction efficiency for water-soluble active substances through the high purity and low ionic content of ultrapure water
2Manufacturing precision
If extraction parameters are optimized for each specific botanical extract, then quality and yield of individual extracts are improved, but the complexity of maintaining multiple protocols increases
Solution Approach 1:
The patent establishes a single universal extraction protocol that maintains manufacturing precision across different botanical extracts. The standardized parameters (ultrapure water, 0.5-2mm particle size, 1:5 to 1:10 ratio, 20-40°C temperature, 2-4 hours extraction) ensure consistent quality and yield for various active substances without requiring multiple protocols, thereby simplifying manufacturing while preserving extract quality
Solution Approach 2:
The patent segments the extraction process into distinct standardized stages: material preparation (0.5-2mm particle size), extraction (fixed temperature, time, and ratio parameters), filtration, and concentration. This segmentation allows each stage to be independently optimized and replicated, maintaining manufacturing precision while reducing protocol complexity through modular standardization
3Device complexity
If conventional filtration methods are used, then equipment simplicity is maintained, but filter clogging and equipment lifespan are compromised
Solution Approach 1:
The patent replaces conventional mechanical filtration systems with tangential flow filtration (TFF), a membrane-based system that uses cross-flow dynamics to prevent clogging. The TFF system maintains equipment simplicity in operation while significantly improving reliability by eliminating filter堵塞, extending membrane lifespan through reversible fouling, and enabling continuous processing without frequent maintenance interruptions
4Manufacturing precision
If extensive drying processes are used to concentrate extracts, then purification is improved, but energy consumption and processing time increase
Solution Approach 1:
The patent applies preliminary concentration through TFF before drying, removing the majority of water and impurities in the liquid phase. This preliminary action reduces the volume and solid content requiring subsequent drying, thereby maintaining high purification levels while significantly reducing energy consumption and processing time in the final drying stage
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 enables the production of high-purity botanical extracts with enhanced recovery and concentration of active principles, extending equipment life and simplifying industrialization by maintaining medicinal and cosmetic properties while reducing impurities and drying time.
Implementation Method 1
purifying the liquid fraction obtained in step b) by tangential flow filtration
Implementation Method 2
TFF is a very versatile technique that allows for everything from removing suspended solids to purifying compounds, depending on the membrane selected
Implementation Method 3
In this technique, the recirculation of the product under pressure avoids the clogging of the filters
Implementation Method 4
Using the appropriate membranes, tangential filtration can also purify extracts. The TFF technique consists of a pressurised recirculation current and a permeated liquid flow that passes through the membranes
Data Source
AI summary
A method for preparing a botanical extract includes extracting plant matter with ultrapure water, and separating the solid plant matter from the liquid fraction, concentrating the liquid fraction, and purifying the concentrated liquid fraction by tangential flow filtration.