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Traditional plant extract concentration mainly relies on vacuum evaporators, which require long-term high-temperature heating. The thermal processing easily causes oxidation, browning and activity loss of heat-sensitive natural active ingredients, resulting in low product quality and low material utilization rate. In addition, thermal concentration cannot remove micro-soluble impurities, leading to high moisture ash content and poor stability of finished extracts. Nanofiltration membrane separation technology adopts low-pressure physical interception to realize efficient water removal and synchronous purification of botanical extracts at room temperature. It concentrates effective components while removing partial small-molecule impurities, greatly improving product purity, color and yield. With the advantages of energy saving, no thermal damage and stable batch consistency, nanofiltration low-temperature concentration has become an indispensable core process in modern plant deep-proce
Crude plant extracts obtained via water or alcohol leaching contain a variety of non-target impurities, including inorganic salts, small-molecule pigments, free organic acids and heteropolysaccharides. These residual impurities lead to dark color, high ash content, poor purity and unstable shelf performance of finished plant extracts. Traditional refining methods such as resin adsorption and vacuum evaporation cannot achieve synchronous desalination, decolorization and low-temperature concentration, and often cause serious loss of heat-sensitive active ingredients. Cross-flow nanofiltration membrane technology utilizes dual effects of molecular screening and charge repulsion to realize selective separation of plant extract components. It effectively removes small-molecule salt ions and pigment impurities while retaining macromolecular active substances such as flavonoids and polyphenols. This integrated green process greatly improves the purity, appearance quality and stability of plan
Plant crude extracts obtained by water and ethanol leaching contain large quantities of suspended residues, macromolecular colloids, soluble protein, pectin and pigment impurities. Traditional processing methods such as static sedimentation, plate-frame filtration and alcohol precipitation cannot completely remove micro colloidal impurities, resulting in turbid liquid, easy precipitation, dark color and poor product stability. In addition, traditional high-temperature concentration and chemical purification easily cause loss of heat-sensitive polyphenols, flavonoids and natural active ingredients. Cross-flow ultrafiltration membrane technology realizes low-temperature physical purification and precise impurity removal for botanical extracts. It effectively intercepts invalid macromolecular impurities while retaining small-molecule active substances, significantly improving extract clarity, purity and storage stability. As a green and efficient refining solution, ultrafiltration has bec
