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Articles by E. Oti
Total Records ( 2 ) for E. Oti
  J.U. Amajor , C.O. Eleazu , E. Oti , A.I. Ikpeam and E.F. Udoh
  The effect of variety on the physico-chemical, carotenoid and microbial loads of flours of 5 varieties of sweet potato: TIS2532.OP.1.13, TIS8164, TIS87/0087, CIP1999024.02 and CIP440293 were determined. Proximate composition of the flours as determined using the AOAC methods showed that TIS8164 had the highest moisture content (9.43±0.03%) among other varieties studied while TIS5325OP.1.13 had the least (7.9±0.01%). CIP440293 had the highest ash content (0.52±0.02%) while CIP1999024.02 had the least (0.22±0.08%). The%crudefiber content of CIP440293 was the highest (0.36±0.05%) among other varieties while CIP1999024.2 had the least (0.21±0.02%). The processed flours contained higher starch contents than fresh samples with TIS5325OP.1.13 having the highest starch content (36.22±0.00%) for the processed flour and TIS87/0087 having the least (30.31±0.02%) as compared with the fresh samples in which TIS5325OP.1.13 gave the highest (28.22±0.00%) while TIS87/0087 gave the least (20.78±0.02%). In terms of carotenoid content, CIP440293 had the highest for the fresh sample (6.23x103 μg/100 g) while TIS87/0087 gave the least (0.54x103 μg/100 g). These values were reduced for the processed flours where CIP440293 again gave the highest (3.99x103 μg/100 g) while TIS87/0087 gave the least (0.02x103 μg/100 g). Sensory evaluation of the fufu samples made from the stored flours indicated that their quality and mouldability were accepted at the second month of storage unlike their colors. Results indicate the acceptability of these potato varieties and their applicability in alchoholic, food and sugar industries. With good microbial loads as evidenced at the 6th month of storage and antioxidant potentials, their shelf lives could be extended if packaged well and stored.
  A.O. Ubalua and E. Oti
  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.
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