Minimum inhibitory concentration (MIC) of the plant extracts to determine MIC of the plant extracts by broth dilution susceptibility test, 1 ml, inoculum (10, cfu ml) of each organism was added
to an equal volume of two-fold dilutions of garlic, shallot and onion extract in respective liquid medium, and to a tube (lOx 1.0 cm) of growth medium (1 ml )
without extract, which served as a growth control.