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Table 1 Phytochemical composition of plants

From: Anti-hyperglycemic effects of three medicinal plants in diabetic pregnancy: modulation of T cell proliferation

Chemical compounds class Test Plant name (part used)
Nauclea latifolia(root and stem) Picralima nitida(seeds) Oxytenanthera abyssinica(leaves)
Alkaloids General test: Dragendorff reagent +++ - +++
Extraction: Mayer reagent +++ ++ +++
Gallic tannins Saturation of Na acetate + a few drips of FeCl3, 1% + +++ ++
Cathechic tannins Stiasny reagent - - +++
Flavonoids Shinoda reagent (cyanidine reaction) - ++ ++
Anthocyanes Adding some drips of HCl 5% to 1 mL of decocted + alcalinisation (with drips of ammoniac 50%) - + +
Leucoanthocyanes Shinoda reagent (chlorhydric alcohol) - - +
Quinonic derivates Born-Trager reaction Concentrated HCl ++ + -
Diluted HCl +++ ++ -
Saponosides Foam index (FI) of diluted aqueous decoction (positive if FI ≥ 100, meaning foam height ≥ 1 cm) +++ - +
(FI > 1 cm) (FI < 1 cm) (FI = 1 cm)
Triterpenoids Liebermann-Buchard reaction (acetic anhydride-sulfuric acide 50 :1) - - -
Steroids Kedde reaction (dinitrobenzoic acid 2% in ethanol + NaOH (1 N) 1:1) - - +++
Cardenolids RAYMOND reaction (Dinitrobenzene 1% in ethanol + NaOH 20%) - - -
Cyanogenic derivates Grignard reaction (soaked paper with picric acid 5% - - -
Mucilages Viscosity study (in absolute ethanol) +++ ++ -
  1. Chemical compounds of total brut extract of selected parts of plants. The phytochemical analysis was performed as described in Methods section. (+++) too high, (++) high (+) low: indicates the presence of the compounds in the plants; (−) indicates the absence of compound in plants.