Carrier particles for exclusion chromatography, useful e.g. for separating nucleic acid from other components of crude extract, comprises porous sporopollenin capsules

摘要

Carrier particles (A) for chromatography based on microcapsules (MC) with porous walls, are new. Carrier particles (A) for chromatography are made from, or contain, microcapsules (MC) of diameter 5-50 micron; the MC walls comprise a continuous, but hydrophilically selective and porous separation layer (3) less than 500 nm thick, pores in (3) are 50-500 nm wide with mean spacing 3 micron, and the walls additionally have a mechanically rigid structure, representing less than 10% of capsule volume, that is not, or only slightly, swellable in water. An Independent claim is also includes for a method for preparing (A) from conifer exines.