ORIENTAL MEDICINE HERB EXTRACTS FOR INSECT REPELLENET AND MANUFACTURING METHOD THEREOF

摘要

A manufacturing method with the extract for murdering insect is arranged to using environment-friendly natural material and solves the problems, such as that agriculture drug will be kept. One manufacturing method of extract includes the following steps: with insect is murdered: injection extraction solvent belongs to coreana into 1 weight ratio to Rhododendron brachycarpum and paulownia: 10~200; Wherein solvent is extracted to put and filter it; It depressurizes and concentrates extracted extract; It mixes concentrating and keeps extract decompression comparative example constant.