Ultrafiltration Membrane Purification & Concentration System for Icodextrin Production
Background Introduction
Icodextrin is a water-soluble branched glucose polymer derived from starch, linked by α-(1→4) glycosidic bonds and less than 10% α-(1→6) glycosidic bonds, classifying it as a dextrin. Its weight-average molecular weight ranges from 13,000 to 19,000 Daltons, while its number-average molecular weight falls between 5,000 and 6,500 Daltons. As a new-generation osmotic agent alternative to glucose for peritoneal dialysis solutions, icodextrin features isotonicity, low glucose content and minimal metabolic byproducts.
Nevertheless, starch—the starting raw material for icodextrin manufacturing—contains abundant low-molecular-weight sugars, aluminum salts and magnesium salts. If dialysis fluid carries excessive aluminum salts, dialysis patients will absorb excess aluminum via peritoneal dialysis treatment. Long-term heavy administration of such dialysis fluid causes aluminum accumulation in the human body and induces toxic effects. Research indicates that once aluminum enters the human body, it primarily deposits in the brain and may trigger brain damage and severe memory loss, which are characteristic symptoms of Alzheimer’s disease. Additionally, residual magnesium salts and small molecular sugars in icodextrin drug substance directly compromise the quality of icodextrin peritoneal dialysis fluid, so magnesium salt control constitutes a critical research objective throughout the production development process.
Application of Membrane Separation Technology in Icodextrin Manufacturing
Icodextrin is a starch hydrolysate with a defined target molecular weight range. Combined with existing production workflows, BluewavBio integrates ultrafiltration technology into icodextrin production. This process efficiently eliminates high-molecular-weight impurities, low-molecular-weight sugars and inorganic salts from icodextrin hydrolysate while enabling high-fold concentration under low-temperature conditions.
Icodextrin Membrane Concentration Process Flow
Technical Advantages of Icodextrin Membrane Concentration Technology
- High membrane separation precision meets strict purification specifications for icodextrin’s weight-average and number-average molecular weight;
- Membrane filtration achieves high-fold concentration with outstanding concentration efficiency;
- Low-temperature membrane filtration prevents thermal degradation and preserves the chemical stability of icodextrin;
- High equipment automation level delivers simple operation procedures;
- The entire unit adopts sanitary-grade construction materials, fully compliant with GMP certification standards.
BluewavBio is a professional manufacturer of membrane separation equipment with a team of senior engineers specializing in membrane engineering applications. After years of technical research and industrial practice, we have mastered advanced ultrafiltration, nanofiltration, reverse osmosis and ceramic membrane technologies. We focus on custom-designing and manufacturing lab-scale, pilot-scale and industrial membrane separation equipment for global clients. If you encounter any technical obstacles in membrane filtration, please feel free to contact us, and our professional technical team will provide dedicated technical support and solutions.