IJBLST 2017 Volume 9 Issue 7

International Journal of Biological Sciences and Technology (IJBLST) ISSN: 0975–8704

IJBST Journal Group -- Open Access -- NO Fees -- NO Processing Charges -- 100% Non Profit Initiatives


Title:
Phytochemical Screening and Antimicrobial Potential of Barteria nigritana Leaf Extracts in Different Solvents against Staphylococcus aureus and Escherichia coli

Authors & Affiliation:
Elsie Akpan, Ekemini Etuk
Department of Botany and Ecological studies. University of Uyo, Uyo, Nigeria


ABSTRACT:
The present study investigated the phytochemical screening and antimicrobial potential of methanolic, ethanolic and water extracts of the leaves of Barteria nigritana against clinical isolates (staphylococcus aureus and Escherichia coli). The phytochemical screening of the leaves of B. nigritana was carried out for the estimation of saponins, tannins, flavonoids, cardiac glycosides, deoxysugars, terpenes, phlobatannins, anthraquinones, alkaloids, phenols and carbohydrates. The antibacterial assay was carried out using the disc diffusion method. The phytochemical screening showed the presence of saponins, flavonoids, cardiac glycosides, deoxysugars, terpenes, alkaloids, and carbohydrates but absence of tannins, phlobatannins, anthraquinones and phenols. The antimicrobial assay showed some level of reactivity of all the extracts against the growth of Escherichia coli (gram negative bacteria) at an inhibition zone of 8mm in diameter, while Staphylococcus aureus (gram positive bacteria) was found to be resistant to all the extracts. 
Keywords: Barteria nigritana, Escherichia coli, Phytochemicals, Staphylococcus aureus

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Prof. Dr. Prabhu Britto Albert,
Sep 28, 2017, 9:43 PM
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Prof. Dr. Prabhu Britto Albert,
Sep 28, 2017, 9:43 PM