High-temperature processing and organic solvent residues in conventional TCM extraction often compromise active ingredient integrity, but ultrafiltration membrane for herbal extraction delivers molecular-level separation to retain medicinal value.
With a pore size range of 0.001–0.1μm, ultrafiltration (UF) membranes precisely filter out macromolecular impurities (e.g., polysaccharides, proteins) while allowing small-molecule active compounds (alkaloids, flavonoids) to pass through. Made from PVDF (polyvinylidene fluoride), hollow fiber UF membranes offer acid and alkali resistance, adapting to diverse TCM extraction systems with varying pH levels.
In gastrodin extraction, traditional alcohol precipitation loses around 15% of gastrodin, whereas a UF membrane system achieves over 95% recovery, with impurity levels meeting pharmacopoeia standards. The process also eliminates solvent residues, aligning with global natural product safety regulations and supporting the modernization of traditional herbal medicine.
Membrane separation technology is a kind of technology that uses a selectively permeable membrane as the separation medium. By applying a certain driving force (such as pressure difference, concentration difference, etc.) on both sides of the membrane, the components on the feed side can selectively permeate through the membrane, so as to achieve the purposes of separation, purification, concentration and so on.
Nowadays, more and more enterprises have keenly perceived the remarkable advantages brought by membrane technology and are actively adopting this technology to boost their own development.
In the food and beverage industry, enterprises utilize membrane technology for operations such as juice concentration and protein purification. This not only effectively preserves the flavor and nutritional components of products but also enhances product quality and extends the shelf life.
In the chemical industry, membrane technology can be applied to the recovery and separation of solvents. It improves the utilization rate of raw materials, reduces production costs, and at the same time, decreases pollutant emissions, enabling green production.
In the water treatment industry, membrane technology plays an irreplaceable role. From the in-depth treatment of industrial wastewater to the purification of drinking water, by removing impurities, heavy metal ions, and microorganisms in water, it provides enterprises with high-quality production water and effluent that meets the standards.
In the biopharmaceutical industry, membrane separation technology can accurately separate and purify biological products, ensuring the activity and purity of products and facilitating the smooth progress of new drug research and development as well as production.
It can be said that membrane technology is gradually becoming an important means for enterprises to enhance their competitiveness and achieve sustainable development.
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