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Preliminary Study on the Potassium content of Nigerian Bananas and the Methanolic Extraction, Phytochemical and Antimicrobial Studies of Oils from Banana Peels

Audu, O. Y. and Durodola, B. M. and Mordi, Raphael C. and Olu-Owolabi, F. E and Uzoamaka, G. C. and Ayo-Ajayi, J. I. and Fadairo, E. A. and Olanrewaju, I. O. and Owoeye, T. F. and Olurunshola, S. J. (2015) Preliminary Study on the Potassium content of Nigerian Bananas and the Methanolic Extraction, Phytochemical and Antimicrobial Studies of Oils from Banana Peels. In: 2nd Covenant University Conference on African Development Issues (CU-ICADI), 11th - 13th May, 2015, Africa Leadership Development Center, Covenant University, Ota, Nigeria..

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Abstract

Banana is eaten all over the world by all sections of the population. It is known to contain potassium and it has been suggested that it could serve as a source of potassium. Recently, a valuable chemical component, a lectin, called BanLec, was isolated from banana fruit and found to possess anti-HIV-1 activity. However, the peels of banana are thrown away as rubbish and farmers are known to use them as feed for their animals. It is therefore necessary to determine the potassium content of some Nigerian bananas and to also extract the oils from their peels. The components of the extracted oils are to be determined and tested for their biological activity. The potassium content of five (5) varieties of Nigerian bananas (Dwarf Cavendish AAA GP; Lady Finger AA GP; Dwarf Chinese Double; Double Dwarf Senorata AA GP; Giant Cavendish (Williams) AAA GP and Dwarf Red AAA GP) was determined using flame photometer. The potassium content varied from 0.15 mg/g (Dwarf Red) to 1.80 mg/g (Lady Finger). Compared to the value of 358 mg per 100 g reported in the literature, these values are very low and considerable lower than the RDA of 4700 mg. The conclusion is that Nigerian bananas will not be a viable source of potassium for candidates with potassium deficiency. A report on the methanolic extract of oil from their peels is given. Two (2) of the five (5) varieties were chosen and methanolic extraction of oils from their peels was undertaken. The crude extract was subjected to phytochemical analysis, which revealed the presence of the following of steroids, saponin and terpenoids, anthraquinones and tannins. A report is also given on antimicrobial studies of the methanolic extracts, which revealed that the oils were effective against some bacteria.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Banana, Musa acuminata colla, Musa sapientum, methanolic extraction, phytochemical study, microbial study
Subjects: Q Science > QH Natural history > QH301 Biology
T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 26 Jun 2015 20:47
Last Modified: 19 Feb 2016 11:37
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/5349

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