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Journal Of Tropical Biosciences

Year: 2015|   Volume No: 10|   ISSN: 0795-3089|   Page No: 0


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Title:  EFFECTS OF VERNONIA AMYGDALINA AND ALLIUM SATIVUM (LINN.) ON MICROBIAL CONTENT OF SMOKED CLARIAS GARIEPINUS (BURCHELL, 1822)

1-LAWAL, A. S., 2 -SULEIMAN, B. AND 3-AWODI, P.O.

 

1LAWAL, A. S.,*2 SULEIMAN, B. AND 3 AWODI, P.O.

1 AND 2-DEPARTMENT OF BIOLOGICAL SCIENCES,

AHMADU BELLO UNIVERSITY, ZARIA

3-DEPARTMENT OF MICROBIOLOGY,

AHMADU BELLO UNIVERSITY, ZARIA

ABSTRACT

This study was conducted to evaluate the effects of bitter leaf Vernonia amygdalina and garlic Allium sativum on microbial content of freshly smoked Clarias gariepinus. Sixteen table-size of life C. gariepinus with average weight and standard length of 287.0g and 34.3cm, respectively were purchased from Sabon-gari market, Zaria, Kaduna State. They were sorted into 4 groups, smoked and treated with garlic and or bitter leaf as follows: Smoked with garlic (SWG), Smoked with bitter leaf (SWB), Smoked with bitter leaf and garlic (SWB&G), while a group smoked without treatment (SWT) served as the control. Duplicate samples per group were tested for microbial loads, at the end of 24 and 72 hrs following recommended methods of the International Commission of Microbiological Specifications for Food. Some of the bacteria identified were Streptococcus species, Staphylococcus aureus and Staphylococcus epidermidis, while the fungi were Aspergillus niger, Fonsecaea spp., Trychophyton spp. and Malbranchea species. The bacterial load for the various treatments (SWT, SWG, SWB and SWB&G) showed significant differences (P < 0.05). The mean number of colony forming units for SWT was 292, SWB was 44, SWG was 132, and SWB&G was 70. SWB showed growth of a colony of Aspergillus niger while SWB&G showed growth of 5 colonies of Fonsecaea spp., Trichophyton spp. and Malbranchea spp. This study shows that bitter leaf has significantly higher (P ≤ 0.05) antimicrobial effect than garlic and is thus recommended for reducing microbial load on smoked Clarias gariepinus.

SUMMARY:

Correspondence:

Author: aquablends@gmail.com


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