Cassava Research Programme, National Root Crops Research Institute (NRCRI), Umudike, PMB 7006, Umuahia, Abia state, Nigeria; Postharvest Technology Programme, National Root Crops Research Institute (NRCRI), Umudike, PMB 7006, Umuahia, Abia State, Nigeria
Ubalua, A.O., Cassava Research Programme, National Root Crops Research Institute (NRCRI), Umudike, PMB 7006, Umuahia, Abia state, Nigeria; Oti, E., Postharvest Technology Programme, National Root Crops Research Institute (NRCRI), Umudike, PMB 7006, Umuahia, Abia State, Nigeria
The inhibitory effects of water, petroleum ether and ethanol extracts of three medicinal plants were investigated on the growth of Botryodiplodia theobromae, Aspergillus flavus, Fusarium solani, Rhizopus sp., Mucor and Erwinia spp isolated from rotted cassava roots on potato dextrose agar. The ethanol extracts of garlic and Landolphia owerrience gave a wider spectrum of activity against the pathogens compared to that of petroleum ether and water. The combination of the extracts of Garlic (Alium sativum) and Garcinia kola demonstrated a remarkable inhibition of the pathogens after 16 days in storage with 2% rot, while that of Garlic and Landolphia owerrience roots exhibited little or no activity unlike the individual extracts. The potency shown by the extracts in overcoming the colonies of the tested pathogens recommends their use as protectants rather than eradicants. © Asian Network for Scientific Information, 2008.
agar; alcohol; Garcinia kola extract; garlic extract; glucose; Landolphia owerrience extract; petroleum ether; plant extract; water; antimicrobial activity; article; Aspergillus flavus; cassava; controlled study; Erwinia; Fusarium solani; Garcinia kola; medicinal plant; microbial growth; Mucor; nonhuman; plant root; postharvest decay; preservation; Rhizopus; Allium sativum; Aspergillus flavus; Botryodiplodia theobromae; Erwinia; Fusarium solani; Garcinia kola; Landolphia; Manihot esculenta; Mucor; Rhizopus; Sativum; Solanum tuberosum