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Evaluation of Proximate, phytochemical and mineral elements compositions of some edible fruit grown in an oil producing community (Umuetchem) of Rivers State, Nigeria were investigated. The fruits were citrus sinensis (orange), Psidium guajava (guava), Ananas Comosus (Pineapple), Carica Papaya (pawpaw) and Dacryodes edulis (African pear). Proximate analysis on wet weight basis indicated that, both the test and control fruit samples [edible parts] were high in moisture contents. Proximate analysis showed slight variation between samples but not statistically significant (p<0.05). Samples were slightly higher in their energy content with values ranging from 37.64±0.70 to 433. 78 ± 0.05, relative to the control which had values in the ranged of 27.04±0.21 to 431.87±0.81. Phytochemical analysis of the fruits showed the presence of alkaloids, tannins, saponins, cyanogenic glycosides, flavonoids and phytates. All samples had very low concentration of cyanogenic glycoside (0.02±0.00) below lethal dose.These values showed no significant difference (p<0.05). Phytochemical analysis portrayed all these fruits safe for human consumption as they contained low concentrations of anti-nutrients, below reference toxic standard. The mineral elements analysis indicated that all the samples contained low levels of mineral elements with Potassium as predominant element. with a level as high as 35.10±0.05 in guava and as low as 10.04±0.01 [pineapple] relative to the control samples which had values in the range of 8.39±0.01 to 39.46±0.05, values showed no significant difference (p<0.05) All the samples were poor sources of Potassium, Magnesium, Sodium, Zinc and Iron and they showed significant difference (p<0.05). The concentrations of Lead (Pb) and nickel in all the samples from the two areas were very low and values showed no significant difference (p<0.05). Mercury was not detected in all the samples. The investigated parameters showed that samples were fairly adequate in their nutrients composition but very poor in mineral elements.

Proximate, Phytochemical and Mineral Elements Compositions of Some Edible Fruits Grown in Oil Producing Community of Rivers State, Nigeria