These in-vitro studies collectively support the
ethnobotanical use of S. torvum. Nevertheless, methanolic extracts
from the various parts (leaves root and stem) were investigated in
the Biomphalaria glabrata assay (Tania et al., 2007). It was
discovered S.torvum extracts are active in brine shrimp bioassay
but were inactive against the mollusk Biomphalaria glabrata
leading to the conclusion that those chemical compounds
responsible for the inhibition of microbial activities are present in
methanolic extracts of leaves and fruit rather in the whole-plant
extracts (Fig 2).