SUSTAINED RELEASE PREPARATION OF PRESERVATIVE CONTAINING ESSENTIAL OIL FOR AGRICULTURAL PRODUCTS

摘要

PURPOSE: A quality preservative for agricultural product containing a powdery microcapsule in which vegetable oil is microcapsulated with a water soluble polymer solution and solvent is provided which is safe to human body and environment friendly and can maintain microbial and insecticidal effects for a long period time. CONSTITUTION: Vegetable oils having microbial and insecticidal effect are emulsified, cross-linked with a water soluble polymer solution and then dried to produce a powdery microcapsule(10) and a solvent(20) for slowly releasing the vegetable oil by dissolving the water soluble polymer as a film material, wherein powdery microcapsule and solvent are packed separatedly and then the solvent is added to the powdery microcapsule to release plant oil in the capsule when used.