| abstract |
The present invention relates to delivery vehicles which are useful for the administration of active principles (APs), preferably medicinal or nutritional active principles, in particular via the oral or parenteral route. The technical problem solved by the invention is that which consists in providing delivery vehicles composed of (nano)- or (micro)particles based on polyamino acids, and which are invert with respect to the AP (proteins), of controllable particle size, strong and inexpensive. According to the invention, the particles have an average size of less than 200 mu m and consist of a polyamino acid of the Leu/Glu type, in which Leu/Glu+Leu>/=3% and the Mw>/=4,000 D. |