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Acetylcholinesterase from Puntius javanicus for the detection of carbamates and organophosphates


Sabullah, Mohd Khalizan and Ahmad, Siti Aqlima and Abd. Shukor, Mohd. Yunus and Shamaan, Nor Arifin and Khalid, Ariff and Gansau, Azlan Jualang and Dahalan, Farrah Aini and Sulaiman, Mohd Rosni (2015) Acetylcholinesterase from Puntius javanicus for the detection of carbamates and organophosphates. Journal of Chemical and Pharmaceutical Sciences, 8 (2). pp. 348-353. ISSN 0974-2115


A new alternative local source of acetylcholinesterase (AChE) has been found to be sensitive towards several insecticides. AChE was purified from the brain tissue of Puntius javanicususing affinity chromatography (procainamide hydrochloride coupled with sephacryl 6B) with the total recovery of 40% at 8.48 purification fold. All carbamate (CB) insecticides tested at the concentration of 1 mg/L were capable of lowering AChE activity to less than 30%; Bendiocarp (18.80%), carbaryl (5.96%,), carbofuran (6.12%), methomyl (13.91%) and propoxur (15.851%). The P. javanicus AChE was found to be unaffected by several activated organophosphates (OP) such as acephate and dimethoate, while trichlorfon slightly inhibited the enzyme activity (p<0.05). Chlorpyrifos, diazinon, malathion and parathion lowered AChE activity to 43.02, 40.97, 37.11 and 46.72%, respectively. Pesticides that inhibit AChE activities more than 50% were further tested in different concentrations to determine the half maximal inhibitory concentration (IC50). Carbofuran and carbaryl showed the lowest IC50 value at 0.035 and 0.031 mg/L, respectively, as both showed no significant differences (p<0.05), followed by bendiocarp, propoxur, methomyl, malathion, diazinon, parathion and chlorpyrifos at 0.045, 0.076, 0.090, 0.063, 0.103, 0.151 and 0.202 mg/L, respectively. Based on these results, the sensitivity of AChE from brain P. javanicus brain tissue shows promise as an alternative biosensor for the detection of insecticides contamination.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Biotechnology and Biomolecular Sciences
Publisher: SPB Pharma Society
Keywords: Puntius javanicus; Acetylcholinesterase; Carbamate; Organophosphate
Depositing User: Mohd Hafiz Che Mahasan
Date Deposited: 22 Jul 2016 02:54
Last Modified: 22 Jul 2016 02:54
URI: http://psasir.upm.edu.my/id/eprint/43643
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