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16501

Antibacterial activities of crude extracts of Nigerian spices and herbs on enteropathogens

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Last updated: 22 Jan 2023

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Abstract

Aim: This study was designed to evaluate the antibacterial activities of water and ethanolic extracts of Nigerian herbs and spices against enteric pathogens.   Methodology: Crude extracts of fresh leaves of Ocimum gratissimum, Psidium guajava, Vernonia amygdalina, Kigelia africana, Azadrichata indica, Pistia stratiotes, Euphobia hirta;bulb of Allum sativum and rhizomes of Zingiber officinale and Curcuma longa were evaluatedusing the agar diffusion assay method and minimal inhibitory concentration (MIC) to determine the antibacterial activities against Vibrio cholerae, Escherichia coli and Salmonella sp.  Gentamicin (28 mg/ml) was used as antibiotic control. Results: Antimicrobial sensitivity test indicated that while Salmonella sp. was not inhibited by ethanolic extracts of Euphobia hirta and Curcuma longa, both water and ethanolic extracts of others inhibited the growth of Vibrio cholerae, Escherichia coli and Salmonella sp. to varying degree.  The minimal inhibitory concentrations (MIC) determined for the crude extracts of the various herbs and spices, using water and aqueous ethanol inhibited the test isolates at high dilutions.  Conclusion: This study has shown the antibacterial potential of the herbs and spices against the tested enteric pathogens. The antibacterial activities of all the herbs and spices observed in this study justify their use in alternative medicine. 

DOI

10.21608/eajbsg.2014.16501

Keywords

Antimicrobial, Enteric pathogens, herbs, Spices, Nigeria

Authors

First Name

Janet

Last Name

Olaitan

MiddleName

Olubukola

Affiliation

Department of Biological Sciences, Faculty of Basic and Applied Sciences, Osun State University, Osogbo, Osun State, Nigeria.

Email

janet.olaitan@uniosun.edu.ng

City

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Orcid

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First Name

Olufunke

Last Name

Shittu

MiddleName

B.

Affiliation

Department of Microbiology, College of Natural Sciences, Federal University of Agriculture,

Email

olufunke_b@yahoo.com

City

-

Orcid

-

Volume

6

Article Issue

2

Related Issue

3522

Issue Date

2014-12-01

Receive Date

2018-10-13

Publish Date

2014-12-01

Page Start

59

Page End

68

Print ISSN

2090-0872

Online ISSN

2090-0880

Link

https://eajbsg.journals.ekb.eg/article_16501.html

Detail API

https://eajbsg.journals.ekb.eg/service?article_code=16501

Order

8

Type

Original Article

Type Code

689

Publication Type

Journal

Publication Title

Egyptian Academic Journal of Biological Sciences, G. Microbiology

Publication Link

https://eajbsg.journals.ekb.eg/

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Details

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Article

Created At

22 Jan 2023