Microencapsulation for controlled oral drug delivery system

摘要

The invention relates to a microencapsulated emulsion a drug-dispersed oil core surrounded by a water-insoluble capsule material. The capsule material is made up of a polysaccharide which has metal chelating capacity, a biocompatible and water-soluble polymer for improving the physical properties of the capsule material, and emulsifying agents. The ratio of polysaccharide to polymer in the capsule material is at least capsule material, and emulsifying agents. The ratio of polysaccharide to polymer in the capsule material is at least 0.25.