Assay for heavy metals using an inhibitive assay based on the acetylcholinesterase from Clarias batrachus
AbstractAcetylcholinesterase (AChE) is usually used as an inhibitive assay for insecticides. A lesser-known property of AChE is its inhibition by heavy metals. In this work, we evaluate an AChE from brains of Clarias batrachus (catfish) exposed to wastes from aquaculture industry as an inhibitive assay for heavy metals. We discovered that the AChE was inhibited completely by Hg2+, Ag2+, Pb2+, Cu2+, Cd2+, Cr6+ and Zn2+ during initial screening. When tested at various concentrations, the heavy metals exhibited exponential decay type inhibition curves. The calculated IC50 (mg/L) for the heavy metals Ag2+, Cu2+, Hg2+, Cr6+ and Cd2+ were 0.088, 0.078, 0.071, 0.87 and 0.913, respectively. The IC50 for these heavy metals are comparable, and some are lower than the IC50 values from the cholinesterases from previously studied fish. The assay can be carried out in less than 30 minutes at ambient temperature.
How to Cite
MUHAMMAD, Umar Abubakar et al. Assay for heavy metals using an inhibitive assay based on the acetylcholinesterase from Clarias batrachus. Bioremediation Science and Technology Research, [S.l.], v. 4, n. 2, p. 6-10, dec. 2016. ISSN 2289-5892. Available at: <http://journal.hibiscuspublisher.com/index.php/BSTR/article/view/369>. Date accessed: 21 may 2018.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).