Microbiological Risk Assessment and Anti-Microbial Activities of Azadirachta Indica Stem Extract Against Sanitary Indicator Bacteria Associated With Kunnu Samples

Dr. AJAO; A.T. YAKUBU,S.E

Microbiological Risk Assessment and Anti-Microbial Activities of Azadirachta Indica Stem Extract Against Sanitary Indicator Bacteria Associated With Kunnu Samples

Dr. AJAO * § B.Sc, M.Sc Microbiology and PhD

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A.T. YAKUBU,S.E

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§ Kwara State Polytechnic,Ilorin

Microbiological Risk Assessment and Anti-Microbial Activities of Azadirachta Indica Stem Extract Against Sanitary Indicator Bacteria Associated With Kunnu Samples

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Abstract

Microbiological risk assessment of kunnu sold in Ilorin metropolis and therapeutic effect of methanolic extract of A. indica against sanitary indicator bacteria isolated from it was evaluated. Antibiotic susceptibility pattern and invitro therapeutic efficacy of Azadirachta indica stem extract was determined. This study indicated that the Kunnu samples were grossly contaminated with high plate count of 7.2 x 106 cfu/ml. Total Salmonella/Shigella plate count, Listeria monocytogenes counts, Total Staphylococcal count, total coliform count and E.coli were ranged between (12×101 -7.6 x 103) cfu/ml, (4.8×102 -25×104)cfu/ml, (9.4×101 -1.0×104)cfu/ml (0.30×102 -1.36×105)cfu/ml and (0.21×101 -27×103)cfu/ml respectively. Erythromycin, Gentamycin, Cephalosporin, Ciprofloxacin and Chloramphenicol showed high level of antimicrobial activity against the tested isolates, while they displayed about 40% resistance to Penicillin, Streptomycin, Bacitracin, and Ampicillin. Methanolic extract of A. Indica stem showed inhibitory activity against all the bacterial isolates in which diameter of zone of inhibition, MIC and MBC ranged between 15-28mm, 3.125-50mg/ml and 3.125-100mg/ml respectively. E.coli showed highest zone of inhibition of 28mm with 3.125mg/ml and 6.25mg/ml of MIC and MBC respectively while pseudomonas sp showed lowest zone of inhibition of 15mm and 50-100mg/ml for MIC and MBC respectively. Control of both pathogens and spoilage bacteria in kunnu becomes important in order to produce food that when properly handled and stored, will have a long shelf life and reduce the incidence of food borne diseases.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Dr. AJAO, A.T. YAKUBU,S.E. 1970. "Microbiological Risk Assessment and Anti-Microbial Activities of Azadirachta Indica Stem Extract Against Sanitary Indicator Bacteria Associated With Kunnu Samples". Global Journal of Science Frontier Research - G: Bio-Tech & Genetics GJSFR-G Volume 11 (GJSFR Volume 11 Issue G8).

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GJSFR Volume 11 Issue G8

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords

A indica kunnu Microbiological risk assessment sanitary indicator bacteria susceptibility

Classification

GJSFR-G Classification FOR Code: 060504

060503

Submission ReceivedSeptember 10, 2011
Peer Review Double Blind
Handling Editor
Accepted September 30, 2011
Published October 11, 2011

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English

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Total Score: 152

Country: Nigeria

Subject: Global Journal of Science Frontier Research

Authors: Dr. AJAO, A.T. YAKUBU,S.E (PhD/Dr. count: 1)

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