I graduated from Kangwon National University in 1992 and joined the Rural Development Administration as a sericultural researcher. I studied mulberry variety breeding for three years after being issued. Since 1995, I have been studying the efficacy and diversity of mulberry leaves while shifting Original sericulture to Functional sericulture. I have been promoting the study of functional and food-based materials of mulberry fruit to the media. As a result, the farmer, area and production volume of the mulberry fruit in Korea have increased sharply, contributing to the pioneering of the mulberry fruit industry. In 2003, I received Ph.D. from Seoul National University under the theme ‘mulberry fruit’. Currently, I’m studying the effect of eliminating of ordor and functionality in order to increase consumption of mulberry leaves and twig.