Table 3.
Qualitative DPPH assay on TLC of the 30 plants studied
| Combretum species | Extractants | |||
| Acetone | Hexane | DCM | Methanol | |
| C. celastroides ssp. celastroides | ++ | − | − | ++ |
| C. celastroides ssp. orientale | ++ | − | − | ++ |
| C. imberbe | ++ | − | − | ++ |
| C. padoides | ++ | − | − | ++ |
| C. caffrum | ++ | − | − | ++ |
| C. erythrophyllum | ++ | − | − | ++ |
| C. kraussii | ++ | − | − | ++ |
| C. woodii | +++ | +++ | +++ | |
| C. collinum ssp. suluense | − | − | − | − |
| C. collinum ssp. taborense | +++ | − | − | +++ |
| C. zeyheri | ++ | − | − | + |
| C. albopunctatum | − | − | − | + |
| C. apiculatum ssp. apiculatum | ++ | − | − | ++ |
| C. edwardsii | ++ | − | − | + |
| C. moggi | + | − | − | ++ |
| C. molle | ++ | − | − | ++ |
| C. petrophilum | ++ | − | − | ++ |
| C. hereroense | +++ | − | − | +++ |
| C. microphyllum | + | − | − | + |
| C. paniculatum | − | − | − | − |
| C. bracteosum | − | − | − | − |
| C. mossambicense | − | − | − | − |
| C. acutifolium | ++ | − | − | ++ |
| C. nelsonii | ++ | − | − | ++ |
| Terminalia species | ||||
| T. prunioides | +++ | − | − | ++ |
| T. brachystemma | +++ | − | − | + |
| T. sericea | +++ | − | − | +++ |
| T. gazensis | +++ | − | − | +++ |
| T. mollis | +++ | +++ | − | +++ |
| T. sambesiaca | +++ | − | − | + |
The degree of activity, determined qualitatively from observation of the yellow colour intensity: weak (+), moderate (++), strong (+++) and no activity (−).