magnetic paverkbara crystallised carbohydrate sferer or particles to anvendas together with bioadsorberande materials

摘要

PCT No. PCT/SE83/00106 Sec. 371 Date Nov. 7, 1983 Sec. 102(e) Date Nov. 7, 1983 PCT Filed Mar. 23, 1983 PCT Pub. No. WO83/03426 PCT Pub. Date Oct. 13, 1983.Magnetically responsive spheres having an average diameter less than 1,000 nm are prepared by dissolving a carbohydrate polymer in a polar solvent, suspending magnetic material in the dissolved carbohydrate, emulsifying the suspension with an emulsion liquid to form an emulsion containing droplets of the suspension and then contacting the emulsion with a crystallizing liquid capable of crystallizing the carbohydrate polymer. The resulting spheres may be bonded with a bioabsorptive material and can be employed in processes such as cell separation, affinity purification or immunochemical assays.