BIODEGRADABLE MICROPARTICLES FOR CONTROLLED RELEASE ADMINISTRATION, WITH PURIFIED AMYLOPECTIN-BASED STARCH OF REDUCED MOLECULAR WEIGHT

摘要

A vaccine composition which comprises an immnunologically active substance embedded in microparticles essentially consisting of starch having an amylopectin content exceeding 85% by weight, of which at least 80% by weight has an average molecular weight within the range of 10-10000 kDa, and without any covalent chemical cross-linking between the starch molecules. A process for preparing such vaccine composition.