Environment, Vol. 3, Issue 2, Sep  2019, Pages 1-10; DOI: 10.31058/j.envi.2019.32001 10.31058/j.envi.2019.32001

Germination, Phytochemical Composition and Oxidation Products of Abelmoscheus Esculentus (Okra) Plant Cultivated on Spent Engine Oil Polluted Soil

, Vol. 3, Issue 2, Sep  2019, Pages 1-10.

DOI: 10.31058/j.envi.2019.32001

Onyegeme Okerenta Blessing Minaopunye 1* , Alozie Sunday Chukwuemaka 1

1 Department of Biochemistry, Faculty of Science, University of Port Harcourt, Port Harcourt

Received: 30 July 2019; Accepted: 20 August 2019; Published: 31 August 2019

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The indiscriminate disposal of spent engine oil (SEO) drained from engines after maintenance has been found to affect plant growth. This study evaluated the effect of SEO on growth, phytochemical composition, and oxidation products of Abelmoscheus esculentus (Okra) plant. A potted experiment simulated environment was developed at the University of Port Harcourt, Choba, Rivers State, to investigate the minimum concentration of SEO that could be inhibitory to the growth of A. esculentus (Okra) seed. The plastic containers filled with 4900g of humus soil were contaminated with various volumes Of SEO (0, 49, 147 and 294ml/4900g of humus soil) to give a percentage concentration of 0%, 1%, 3%, and 6% respectively. Each treatment had three replicates arranged in a complete randomized block design. Germination studies carried out showed the number of seeds of okra that grew into seedling decreased with the increasing level of the contaminant. Percentage germination was found to decrease from 100% in 0ml to 66% in 49ml, 33% in 147ml and no growth in 294ml. Phytochemical composition of the leaves after 3 months showed a significant decrease (p<0.05) in vitamin C, saponin and alkaloid and a significant increase (p<0.05) in flavonoid, cyanogenic glycoside and oxalate concentrations with a respective increase in SEO pollution. The result obtained in this study shows the phytotoxic effect of SEO and suggests that SEO at a concentration of 49ml (1%) /4900g of humus soil could be inhibitory to growth and seedling of Okra.


Abelmoschus Esculentus, Spent Engine Oil, Oxidation, Phytochemical, Polluted Soil


© 2017 by the authors. Licensee International Technology and Science Press Limited. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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