Figure 2

Interaction indexes (II) of the EDI (■), EHE (●) and EHI (▲) extracts as a function of the percentage of streptomycin in the mixture for S. aureus (a), B. cereus (b), K. pneumoniae (c) and S. flexneri (d). The optimum proportion of the mixture was 75% extract (II maximum). There was a large difference in the II of EHE between the B. cereus and the other bacteria. There was no difference in the extracts with regard to the antibacterial activity of streptomycin against K. pneumoniae.