RESUMO
Aim:This study aims to determine the presence of some vitamins and minerals in both T. stansand C. aferleaves.Materials and Methods:Composition of some vitamins and minerals of ethanolic extract of T. stansand C. aferleaves wereevaluated andcollected at Malabo Campus, University of Calabar, Calabar and from Eman-Uruan local government area, Akwa IbomState, Nigeria respectively.The parameters investigated were determined using standard biochemical methods. Results:The leaves contained a variety of vitamins (A, D, E, B complex and C) with vitamin E-(276.33.±3.28mg/100g) for Tecoma stansand (265.67±5.49mg/100g)for Costus afer.T. stansrecorded higher concentration in mg/100 l for the determined vitamins except for vitamin D, whose concentration for C. afer(0.09±0.01mg/100g) was higher than the value (0.07±0.01mg/100g) for T. stansthough it was significant. T. stansis significantly different [p=0.05] from C. aferfor vitamins A and C respectively.The mineral compositions of T. stansand C. aferleaves contain considerable amount of Potassium (3.27 ± 0.009mg/l) and (4.63±0.09mg/l), Magnesium (26.03 ± 0.009mg/l) and (89.83±0.91?mg/l), Sodium (5.27 ± 0.078mg/l) and (16.23±0.12?mg/l), Calcium (25.33 ± 0.88mg/l) and (82.00±1.53?mg/l), Phosphorus (2.27±0.09mg/l) and (1.63±0.09?mg/l), respectively.C. afercontained significant (p <0.05) higher concentration of Mg, Ca, K and Na compared to T. stans.This indicates the tendency of T. stansand C. aferto be able to control osmotic balance, essential for bone formation, lower blood pressure and also act a source of antioxidant vitamins and minerals.Conclusion:The presence of these vitamins and minerals in both T. stansand C. aferleaves in this leafy vegetables supports the use of these leaves for food and ethnomedicinal purposes in Nigeria and parts of the world where they are cultivated.