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Table 4 Results of phytochemical screening

From: In vitro antihelmintic effect of fifteen tropical plant extracts on excysted flukes of Fasciola hepatica

Colorimetric reaction Plant extract
L. camara B. frutescens P. auritum C. cajan A. mexicana
Phenolic compounds (FeCl3) ++ + ++ ++ +
Coumarins (UV) -- ++ -- -- +
Flavanones (NH3) + Yellow -- + Yellow + Yellow + Yellow
Flavonoids (Shinoda) -- -- + Red + Orange + Red
Sesquiterpene lactones (Baljet) + -- + + +
Alkaloids (Meyer) +++ +++ +++ +++ +++
Alkaloids (Dragendorff) +++ +++ +++ +++ +++
Steroids and triterpenoids (Liberman, Burchard) ++ ++ + + +
Glycosides (α-naphtol) -- -- -- -- +
  1. Symbology: −− negative; + weak positive; ++ positive; +++ strong positive.