| Vegetable species | Secondary metabolite concentrationa | |||||
| Alkaloids | Flavanoids | Saponins | Steroids | Tanins | Triterpenes | |
| Amaranthus dubius Mart. Ex Thell. | + | + | - | +++ | ++ | - |
| Gnetum africanum Welw. | + | +++ | + | +++ | ++ | - |
| Lomariopsis guineensis (Unerw.) Alston | - | ++ | - | +++ | ++ | - |
| Pennisetum purpureum Schumach | + | +++ | - | - | ++ | + |
| Vernonia amygdalina Del. | + | ++ | + | +++ | ++ | - |