The invention discloses an effective part extract of
valeriana amurensis P.Smirn. and a
quality control method and medical use thereof. The content of total lignanoid substances in the extract accounts for over 50 percent of the total weight of the extract, wherein (+)
pinoresinol-4,4'-O-beta-D-diglucopyranoside and (+)
pinoresinol-8-O-beta-D-glucopyranoside are the main
active components in the effective part extract, and the sum of the contents of the two
active components accounts for more than 13 percent of the total weight of the extract. The invention also discloses a preparation method and the
quality control method of the effective part extract. The effective part extract contains one effective part group of total lignanoid components and can effectively treat
central nervous system degenerative diseases including
senile dementia, tristimania and the like. The process for preparing the effective part extracts of the
valeriana amurensis P.Smirn. for resisting the
senile dementia can adapt to industrial production, and provides a new method for treating the
central nervous system degenerative diseases by using the
valeriana amurensis P.Smirn..