| abstract |
The present invention relates to the vectors useful for the administration of active principles (PA), preferably medicinal or nutritional, especially orally or parenterally. The technical problem solved by the invention is that consisting in the provision of vectors formed by (nano) or (micro) particles based on polyamino acids, and which are inert with respect to the PA (proteins), particle size distribution. controllable, resistant and economical. According to the invention, the particles have a mean size of less than 200 .mu.m and consist of a polyamino acid of the Leu / Glu type, in which Leu / Glu + Leu .gtoreq. 3% and M W .gtoreq. 4000 D. |