Antimicrobial Activities Of Oil Extracts Of Piper Guineense And Xylopia Aethiopica On Some Microbial Pathogens Of Food

ABSTRACT Oils extracted from the fruits of two Africa spices- Piper guineense and Xylopia aethiopica were evaluated for their antimicrobial activities using Escherichia coli, Salmonella sp, Aspergillus sp, Bacillus cereus, Penicillum commune and Rhizopus stolonifer as test isolates. Well-in-agar, disc diffusion and dilution susceptibility testing methods were used to assay for their antimicrobial properties. For the bacterial isolates the antimicrobial activity of the oils increased with increase in concentration. B. cereus was more susceptible to the oils than other isolates with zones of gr…