VARIATIONS IN NUTRITIONAL POTENTIALS OF SOME VEGETABLES GROWN ON CRUDE-OIL CONTAMINATED AND REMEDIATED AGRICULTURAL SOIL

摘要

Variations in nutritional potentials of some edible vegetables grown on crude oil post remediated agricultural soil was carried out after four weeks of growth on the bioaugmented and natural attenuated soils. The result showed variations in both the vitamin content and proximate composition of the vegetables. Telfairia occidentalis grown on bioaugmented site had the highest concentration of vitamins B 2 , B 3 and E with an increase of 16.5425 % for vitamin B 2 and decrease of 7.8747 % and 6.6143 % for vitamins B 3 and E, while Tallinium triangulare grown on natural attenuated site had the highest concentration of vitamins A, B 1 , B 2 , B 3 , B 6 , C and E with decrease of 12.7558 %, 5.3239 %, 6.2900 %, 2.4000 %, 2.8834 %, 0.1508 %, and 21.4117 %. Moreover Amarantus hybridus grown on the natural attenuated site had the highest increase in vitamins A, B 1 , B 6, C and E with decrease of 5.4216 %, 16.2200 %, 4.7159 %, 1.7580 % and 3.5965 %. Proximate composition of the vegetables showed that Telfairia occidentalis grown on bioaugmented site had the highest concentration of lipid, carbohydrate, moisture, and crude fibre with increase of 125.1487 %, 3.0111 %, 3.0600 % and 6.2500 % respectively, while Tallinium triangulare grown on bioaugmented site had the highest concentrations of lipid, carbohydrate and ash with increase of 430.0000 %, 27.7592 % and 31.2846 % respectively. However, Amarantus hybridus also grown on bioaugmented site had the highest concentrations of lipid, carbohydrate and moisture with increase of 349.9631%, and 1.4593% for lipid and moisture, while carbohydrate had a decrease of 12.4762% when compared to their respective controls.