Method for extracting treatment ingredients for gastrointestinal diseases from bark of liriodendron tulipifera

摘要

The present invention relates to a method for extracting treatment ingredients for gastrointestinal diseases from the bark of Liriodendron tulipifera, the treatment ingredients containing epitulipinolide and costunolide as active ingredients, and to a therapeutic agent for gastrointestinal diseases, containing epitulipinolide and costunolide extracted using said method.