Assertion: valerian's root | /r/MadeOf | tannin
Facets:
Source sentences:
text: In addition, Valerian root also contains 5-10% of inorganic substances, a lot of glutamic acid (starch and saccharose) organic acids (benzoic, salicylic, caicic, and chloroform), some lipid, sterol, and tannin.
text: Furthermore, the root contains flavonoids, mucous substances, tannins, resins, sugars, starches, fats, manganese, calcium, choline, and B vitamins.