Comparative morphological study of five varieties of Colocasia esculenta (L.) Schott present in Anambra State, Nigeria was carried out, in order to furnish plant taxonomists with information which could be of great he...Comparative morphological study of five varieties of Colocasia esculenta (L.) Schott present in Anambra State, Nigeria was carried out, in order to furnish plant taxonomists with information which could be of great help in delimitation of the varieties. Significant difference was established at p < 0.05. The result showed that adaxial surface of “kochuo” had a purplish dot on the centre, abaxial leaf surface had a conspicuous purplish colour at the point of attachment to the leaf, and the cormels had numerous striking vertical purple stripes on the surface. There was presence of foliaceous (leaf-like) appendages at the veins of the abaxial surface of the leaf of “ogeriobosi”. The leaf length ranged from 35.6 ± 7.70 cm (“kochuo”) to 49.9 ± 3.55 cm (“ogeriobosi”). Petiole length of “ogeriobosi” was the highest (63.3 ± 3.83 cm), whereas the least was Colocasia esculenta var. antiquorum (26.67 ± 2.20 cm). The corm length ranged from 4.10 ± 0.10 cm (Colocasia esculenta var. antiquorum) to 8.60 ± 0.35 cm (“ogeriobosi”), while the cormel length ranged from 3.70 ± 0.96 cm (Colocasia esculenta var. antiquorum) to 7.03 ± 0.36 cm (“ogeriobosi”). This work has revealed diagnostic and differential morphological characters, which could be useful for identification and description of varieties of C. esculenta. In addition, it provided additional information which might be helpful in resolving the on-going controversy in the taxonomy of Colocasia, which would, in turn, probably lead to possible delimitation of C. esculenta.展开更多
The micronutrient compositions of stored cocoyam-based products were determined using gas chromatography and atomic absorption spectrophotometry.The dried cormels and dried cocoyam leaves were pulverized with a locall...The micronutrient compositions of stored cocoyam-based products were determined using gas chromatography and atomic absorption spectrophotometry.The dried cormels and dried cocoyam leaves were pulverized with a locally fabricated machine and stored in various plastic containers for 0,1,2,3 months.The data obtained were analyzed statistically using SPSS version 21.Means were separated at P≤0.05 using Fisher’s Least Significant Differences.The vitamin contents(mg/100g)of achicha were as follows:cocoindia had total carotene(1.84),B1(0.071),B2(0.044),B3(0.41),C(4.14)while edeofe had vitamin E(0.84)and total carotene(1.24),B1(0.021),B2(0.013),B3(0.18),C(2.47)and E(0.57)after storage.The vitamin contents(mg/100g)of mpoto were as follows:cocoindia had B1(0.53),B2(0.31),B3(1.75),C(18.46)and E(5.28)while edeofe had total carotene(3.44μg/100g)and B1(0.26),B2(0.14),B3(1.19),C(8.61)and E(2.46),and anampu had total carotene(2.56μg/100g)after storage.The mineral composition(mg/100g)of achicha are as follows:anampu had Ca(48.78),Na(18.52),Mg(10.18),Mn(0.17)and P(19.61),Fe(2.47),Zn(2.60),I2(51.71);edeofe had P(26.27),Fe(3.66),Zn(2.91),and Ca(40.53),Na(10.67),Mg(6.29),K(285.77),Mn(0.075);and cocoindia had K(405.87)and I2(69.34)after storage.The mineral compositions of mpoto(mg/100g)are as follows:anampu had Ca(157.57),Mg(95.84),K(485.52),P(45.52),I2(90.33)and Zn(2.61);edeofe had Fe(4.87),Zn(4.52),and Ca(152.29),Na(176.54),Mg(84.77),K(325.87),P(35.53),Mn(0.25),I2(65.29)and cocoindia had Mg(95.84),Mn(0.63)and Fe(3.61)after storage.Micronutrients of the products reduced significantly(P≤0.05)during storage.Fortified Colocasia products with micronutrients will meet the required recommended dietary intake.展开更多
文摘Comparative morphological study of five varieties of Colocasia esculenta (L.) Schott present in Anambra State, Nigeria was carried out, in order to furnish plant taxonomists with information which could be of great help in delimitation of the varieties. Significant difference was established at p < 0.05. The result showed that adaxial surface of “kochuo” had a purplish dot on the centre, abaxial leaf surface had a conspicuous purplish colour at the point of attachment to the leaf, and the cormels had numerous striking vertical purple stripes on the surface. There was presence of foliaceous (leaf-like) appendages at the veins of the abaxial surface of the leaf of “ogeriobosi”. The leaf length ranged from 35.6 ± 7.70 cm (“kochuo”) to 49.9 ± 3.55 cm (“ogeriobosi”). Petiole length of “ogeriobosi” was the highest (63.3 ± 3.83 cm), whereas the least was Colocasia esculenta var. antiquorum (26.67 ± 2.20 cm). The corm length ranged from 4.10 ± 0.10 cm (Colocasia esculenta var. antiquorum) to 8.60 ± 0.35 cm (“ogeriobosi”), while the cormel length ranged from 3.70 ± 0.96 cm (Colocasia esculenta var. antiquorum) to 7.03 ± 0.36 cm (“ogeriobosi”). This work has revealed diagnostic and differential morphological characters, which could be useful for identification and description of varieties of C. esculenta. In addition, it provided additional information which might be helpful in resolving the on-going controversy in the taxonomy of Colocasia, which would, in turn, probably lead to possible delimitation of C. esculenta.
文摘The micronutrient compositions of stored cocoyam-based products were determined using gas chromatography and atomic absorption spectrophotometry.The dried cormels and dried cocoyam leaves were pulverized with a locally fabricated machine and stored in various plastic containers for 0,1,2,3 months.The data obtained were analyzed statistically using SPSS version 21.Means were separated at P≤0.05 using Fisher’s Least Significant Differences.The vitamin contents(mg/100g)of achicha were as follows:cocoindia had total carotene(1.84),B1(0.071),B2(0.044),B3(0.41),C(4.14)while edeofe had vitamin E(0.84)and total carotene(1.24),B1(0.021),B2(0.013),B3(0.18),C(2.47)and E(0.57)after storage.The vitamin contents(mg/100g)of mpoto were as follows:cocoindia had B1(0.53),B2(0.31),B3(1.75),C(18.46)and E(5.28)while edeofe had total carotene(3.44μg/100g)and B1(0.26),B2(0.14),B3(1.19),C(8.61)and E(2.46),and anampu had total carotene(2.56μg/100g)after storage.The mineral composition(mg/100g)of achicha are as follows:anampu had Ca(48.78),Na(18.52),Mg(10.18),Mn(0.17)and P(19.61),Fe(2.47),Zn(2.60),I2(51.71);edeofe had P(26.27),Fe(3.66),Zn(2.91),and Ca(40.53),Na(10.67),Mg(6.29),K(285.77),Mn(0.075);and cocoindia had K(405.87)and I2(69.34)after storage.The mineral compositions of mpoto(mg/100g)are as follows:anampu had Ca(157.57),Mg(95.84),K(485.52),P(45.52),I2(90.33)and Zn(2.61);edeofe had Fe(4.87),Zn(4.52),and Ca(152.29),Na(176.54),Mg(84.77),K(325.87),P(35.53),Mn(0.25),I2(65.29)and cocoindia had Mg(95.84),Mn(0.63)and Fe(3.61)after storage.Micronutrients of the products reduced significantly(P≤0.05)during storage.Fortified Colocasia products with micronutrients will meet the required recommended dietary intake.
