From: Pharmacognostic standardisation of the leaves of Costus afer Ker Gawl. (Zingiberaceae) and Palisota hirsuta (Thunb.) K. Schum. (Commelinaceae)
Sample
Alkaloids
(%w/w)
Flavonoid
Saponin
Terpenoid
Total phenol
Costus afer
9.1
3.13
0.9
1
0.77
Palisota hirsuta
7.5
0
1.65
0.5
0.63