Biofilm Formation and Virulent Properties of Bacterial Isolates in Stored Drinking Water of Some Homes

C. N. Amadi-Ikpa, N. P. Akani, S.A. Wemedo and J.O. Williams
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C. N. Amadi-Ikpa: Department of Microbiology, Rivers State University, Nkpolu Oroworukwo, P.M.B.5080, Port Harcourt, Rivers State, Nigeria
N. P. Akani: Department of Microbiology, Rivers State University, Nkpolu Oroworukwo, P.M.B.5080, Port Harcourt, Rivers State, Nigeria
S.A. Wemedo: Department of Microbiology, Rivers State University, Nkpolu Oroworukwo, P.M.B.5080, Port Harcourt, Rivers State, Nigeria
J.O. Williams: Department of Microbiology, Rivers State University, Nkpolu Oroworukwo, P.M.B.5080, Port Harcourt, Rivers State, Nigeria

International Journal of Research and Innovation in Applied Science, 2020, vol. 5, issue 8, 42-48

Abstract: The change in stored drinking water quality in containers calls for concern due to possible build up of biofilm by bacteria which find their way into water. The study aimed at determining the biofilm and virulent properties of associated bacteria. Thus, thirty water samples from some homes were collected, stored and analyzed using spread and streaking techniques to isolate characteristic bacterial colonies on standard media. A total of 29 bacterial isolates belonging to five genera were identified molecularly. The bacteria isolates namely: Bacillus flexus, Chryseobacterium aquifrigidense, Providencia stuartii, Alcaligene faecalis and Providencia rustigianii were obtained. The bacterial isolates with their percentage virulent potential are as follow; Bacillus flexus 100%, Chryseobacterium aquifrigidense16.6% Providencia stuartii 33%, Alcaligene faecalis 66% and Providencia rustigianii 33.3%. All bacterial isolates developed/expressed biofim formation except Chryseobacterium aquifrigidense. Biofilm formation in the interior surface wall of drinking water storage container was also dependent on the nature and type of storage vessel or container used in the home. The virulence factors as exhibited by these potential pathogens have vital role in invading underlying or immune compromised individuals. Thus, the effect in the change of stored drinking water in containers can be mitigated when individuals maintain good personal hygiene and boost their immune system in order to put off the potential of opportunistic pathogens recovered in this study.

Date: 2020
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