Bioremediation of Neonicotinoid Pesticide, Imidacloprid, Mediated by Bacillus cereus

Author:

Talpur Farah Naz1ORCID,Unar Ahsanullah2,Bhatti Sana Kanwal1,Alsawalha Laila3,Fouad Dalia4,Bashir Humaira5,Afridi Hassan Imran1,Ataya Farid Shokry6ORCID,Jefri Ohoud A.7,Bashir Muhammad Sohail89ORCID

Affiliation:

1. National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan

2. School of Life Sciences, University of Sciences and Technology of China, Hefei 230052, China

3. Faculty of Science, Zarqa University, Zarqa 13110, Jordan

4. Department of Zoology, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia

5. Department of Botany, University of the Punjab, Quaid-e-Azam Campus, 54590 Lahore, Pakistan

6. Department of Biochemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia

7. Department of Biological Science, Faculty of Science, King Abdul-Aziz University, Jeddah 2158, Saudi Arabia

8. Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, China

9. Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China

Abstract

Imidacloprid, a toxic pesticide of the chloronicotinyl category, is employed extensively in agricultural fields, and its exposure causes serious health issues. Biodegradation is considered to be a green and economical approach to remediate pesticides. Herein, imidacloprid degradation efficiency of Bacillus sp. is highlighted, among which Bacillus cereus exhibited the greatest degradation; optimization of experimental variables (pH, imidacloprid and agitation time) via Box–Behnken factorial design and analysis of variance (ANOVA) revealed 92% biodegradation at the initial substrate concentration of 0.03 mM, aerobically in 11 days under favorable pH 7. The subsequent metabolites, identified through liquid chromatography–mass spectrometry, were 5-hydroxy imidacloprid, imidacloprid-guanidine and 6-chloronicotinic acid.

Funder

Research & Innovation, “Ministry of Education” in Saudi Arabia

Publisher

MDPI AG

Subject

Bioengineering

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