Alkaline extracted cyanide from cassava wastewater and its sole induction of chromosomal aberrations on Allium cepa L. root tips

Simple item page
dc.contributor.authorOgunyemi, Adewale
dc.contributor.authorAbayomi, Akeem A.
dc.contributor.authorOpawale, Rachael O.
dc.contributor.authorSamuel, Titilola A.
dc.contributor.authorIlori, Matthew O.
dc.contributor.authorAmund, Olukayode O.
dc.contributor.authorBabajide, Alo
dc.date.accessioned2021-05-24T15:15:57Z
dc.date.available2021-05-24T15:15:57Z
dc.date.issued2021-04
dc.descriptionStaff Publicationen_US
dc.description.abstractCassava, a staple crop in Nigeria, processed by numerous factories in rural and sub-urban locations is known to contain some level of cyano compounds. Lack of stringent environmental regulations on management of cassava wastewater (CWW) from cassava processing factories had led to its indiscriminate discharge on the environment. CWW samples were obtained from cassava processing factories from selected states (Lagos (A), Oyo (B), Ogun 1 (C1), Ogun 2 (C2) and Cross River (D)) in Nigeria to determine the cytotoxic and genotoxic effects of extracted cyanide from the wastewaters. The cyanide was hydrolyzed via chemical degradation utilizing 1.25 M NaOH and subsequently titrated using silver nitrate with p-dimethylaminobenzalrhodamine as indicator. Further, in order to explore the potential toxicity of this pollutant present in the effluent, a battery of short-term biological assay (Allium cepa chromosomal aberration test) was used. Bulbs with roots of Allium cepa L. were treated with different concentrations (0.05%, 0.1%, 0.2%, 0.4%, and 0.8%) of CWW, and after 48 h the root tips were processed for cytological studies by the aceto-orcein squash procedure. The results revealed that cyanide concentrations on re-fluxing were in the range of 1.0 mg/L and 1.3 mg/L. All concentrations induced a number of chromosomal aberrations in the root tip cells. The mitotic index decreased significantly (p < 0.05) with increasing concentration. The cytotoxic effects showed strong concentration dependent root growth inhibition with EC50 values of 30, 20, 37, 43 and 22 % for A, B, C1, C2 and D, after 72 h. The findings thus indicate that alkali treatment is very efficient in degrading the cyanide content of CWW and has shown that the combination of physico-chemical analysis along with the sole toxicity assessment could provide valuable information about the sole toxicity of cyanide as a chemical pollutant present in the cassava effluent.en_US
dc.identifier.urihttps://doi.org/10.1080/09593330.2021.1916088
dc.identifier.urihttp://repository.elizadeuniversity.edu.ng/handle/20.500.12398/1022
dc.language.isoenen_US
dc.publisherTaylor and Francis Online : Environmental Technologyen_US
dc.subjectAllium cepa Len_US
dc.subjectCassava wastewateren_US
dc.subjectChromosome aberrationsen_US
dc.subjectCytotoxicityen_US
dc.subjectGenotoxicityen_US
dc.subjecthydrolysis Alkalien_US
dc.titleAlkaline extracted cyanide from cassava wastewater and its sole induction of chromosomal aberrations on Allium cepa L. root tipsen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Alkaline extracted cyanide from cassava wastewater and its sole induction of chromosomal aberrations on.pdf
Size:
211.7 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.61 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Articles Biological Sciences