THE EFFECT OF CRUDE OIL POLLUTION AND BIOREMEDIATION ON THE NEUTRACEUTICAL CONSTITUENTS OF Cucu.....

The impact of crude oil-polluted soil and green manure (Calopogonium mucunoides Desv. and Aspilia africana (Pers.) C. D. Adams) on the proximate composition, mineral content, and vitamin A and C content of Cucurbita maxima was investigated. 4 kg of sandy-loam was thoroughly mixed with 10, 20, 30, 40, and 50 ml of crude oil to produce polluted soils. As a control, unpolluted garden soil was used. The treatment consisted of introducing 3 kg of green manure (Calopogonium mucunoides and Aspilia africana) to varied amounts of crude oil-polluted soils; 10 - 50 ml of crude oil. The research was carried out in perforated polythene bags (18 x 36 cm). The results of this study revealed that when crude oil pollution increased, the proximate composition, vitamin A and C content, and mineral content of C. maxima decreased significantly (P0.05). When compared to the pollution treatment, the addition of green manure (Calopogonium mucunoides and Aspilia africana) to alleviate the hindering conditions in the crude oil polluted soil considerably (P0.05) improved the growth characteristics of Cucurbita maxima. The neutraceutical contents of Cucurbita maxima were found to be negatively affected by crude oil contamination, resulting in decreased growth and quality.

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