Antimicrobial Activity of Vigna unguiculata L. Walp Seed Oil

Abstract

The antimicrobial activity of three varieties of Vigna unguiculata L. Walp seed oil (LBS-1, LBS-2 and LBS-3) were investigated against five Gram positive bacteria ( Bacillus megaterium, Bacillus subtilis, Sarcina lutea, Salmonella typhi and Staphylococcus aureus ) and four Gram negative ( Escherichia coli, Shigella dysenteriae, Shigella sonnei, Shigella shiga ) and four fungi ( Penicilium spp., Mucor spp., Candida albicans and Aspergillus fumigatius ). The LBS-1 oil at the concentration of 400 I¼g/ disc showed the highest activity against Sarcina lutea (19±0.1 mm) than that of LBS-2 (14±0.3 mm) and LBS-3 (12±0.3 mm) oil whereas LBS-3 oil showed highest activity against Staphylococcus aureus (16±0.1 mm) than that of LBS-1 (10±0.6 mm) and LBS-2 (13±0.4 mm) oil. All the three oils are active against the three tested fungi namely Penicilium spp., Mucor spp. and Candida albicans but showed no sensitivity against Aspergillus fumigatius .