Research Article

Response of Aspergillus species to the Toxicity of Domestic Detergents

Williams, Janet Olufunmilayo1*, Ogolo, Chinomso Nwaka1
1 Department of Microbiology, Rivers State University, Port Harcourt, Rivers State, Nigeria.
* Corresponding author: janet.williams@ust.edu.ng
Published: Jun, 2018
DOI: 10.67614/njm.2018.u7km55oq
Pages: 4334-4343

Abstract

This study was performed to assess the toxicity of two different domestic detergents at varying concentrations on the Aspergillus sp. subjected to different exposure times. The toxicological assessment was performed using the Aspergillus species isolated from fresh (Asarama stream, Asarama town, Andoni L.G.A) and brackish (Eagle island River, Port Harcourt) aquatic ecosystems both in Rivers state. The set-ups containing the test microorganism had the following concentrations of domestic detergents (Mymy and Zip): 6.25%, 12.5%, 25%, 50% and 75% and were exposed for 0, 4, 8, 12 and 24hrsrespectively.With the use of differential/selective media, the organism was isolated and further characterized by cell colonial and morphological identification. The median lethal concentration (Lc50) was employed to compute the toxicities of the two domestic detergents on the test organism. The result obtained showed that the Aspergillus sp. demonstrated great sensitivity to the toxicity elicited by the domestic detergents. The sensitivity of the Aspergillus sp. to the toxicity of the different toxicants, Mymy and Zip detergents from the two different water samples decreased in the following order (noting the lower the lethal concentration (Lc50), the more toxic the toxicant): Zip detergent in freshwater (37.26 mg/I) >Mymy detergent in brackish water (41.71 mg/1) > Zip detergent in brackish water (42.63 mg/1) >Mymy detergent in fresh water (47.82 mg/1). The Zip detergent showed more toxicity in fresh water with Lc50 of 37.26 and Mymy detergent showed less toxicity in fresh water with Lc50 of 47.82.

Keywords

Aspergillus species toxicity Mymy zip detergents fresh and backish water

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How to Cite

Olufunmilayo, W. J., & Nwaka, O. C. (2018). Response of Aspergillus species to the Toxicity of Domestic Detergents. Nigerian Journal of Microbiology, 32(1), 4334-4343. https://doi.org/10.67614/njm.2018.u7km55oq

W. J. Olufunmilayo, and O. C. Nwaka, "Response of Aspergillus species to the Toxicity of Domestic Detergents," Nigerian Journal of Microbiology, vol. 32, no. 1, pp. 4334-4343, June 2018. doi: 10.67614/njm.2018.u7km55oq

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