본 연구에서는 시베리아 지역에서 직접 채취하고 기원을 현지 학자로부터 동정받은 위 식물 잎의 메탄올 추출물을 얻었다.
In this study, methanol extracts of the aforementioned plant leaves were obtained, which were directly collected from Siberia and whose origin was identified by a local scientist.