Colorimetric Sensing of Chlorpyrifos Pesticides Using Green Synthesized Silver Nanoparticles from Neem Root Extracts
This study explores the colorimetric sensing of chlorpyrifos (CP) pesticides using neem root extracts-synthesized silver nanoparticles (NRE-AgNPs). The NRE-AgNPs were synthesized via a cost-effective bio-reduction method from neem (Azadirachta indica) and evaluated for their pesticide’s colorimetri...
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North Carolina State University
2025-06-01
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| Online Access: | https://ojs.bioresources.com/index.php/BRJ/article/view/24621 |
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| author | Abidemi Mercy Babatimehin Oyebola Elizabeth Ogunbamowo Gabriel Olukayode Ajayi Ali El Gamal Talha Bin Emran Edwin Andrew Ofudje Mohamed Hefnawy |
| author_facet | Abidemi Mercy Babatimehin Oyebola Elizabeth Ogunbamowo Gabriel Olukayode Ajayi Ali El Gamal Talha Bin Emran Edwin Andrew Ofudje Mohamed Hefnawy |
| author_sort | Abidemi Mercy Babatimehin |
| collection | DOAJ |
| description | This study explores the colorimetric sensing of chlorpyrifos (CP) pesticides using neem root extracts-synthesized silver nanoparticles (NRE-AgNPs). The NRE-AgNPs were synthesized via a cost-effective bio-reduction method from neem (Azadirachta indica) and evaluated for their pesticide’s colorimetric sensing property. Phytochemical analysis confirmed the presence of tannins (80.4 mg/mL), phenols (60.8 mg/mL), flavonoids (54.6 mg/mL), alkaloids (28.9 mg/mL), reducing sugars (59.1 mg/mL), and cardiac glycosides (47.6 mg/mL), which facilitated nanoparticle formation and stability. Scanning electron microscopy revealed nanoparticles with an average particle size of 68.3 nm, while energy-dispersive X-ray spectrum confirmed the presence of silver (0.14% atomic, 0.25% weight) alongside stabilizing organic compounds. UV-Vis spectroscopy confirmed NRE-AgNP synthesis with a surface plasmon resonance peak at 405 nm. The nanoparticles responded sensitively to the presence of the chlorpyrifos, especially at 300 to 350 nm, marking a clear deviation from their original 405 nm signature, thus confirming the viability of AgNPs as an optical sensor. This study underscores the potential of neem root-based AgNPs as a sustainable and eco-friendly solution for pesticide sensing, offering promising applications in the environmental field. |
| format | Article |
| id | doaj-art-6e87355b11464102aceeee6d6ff593a6 |
| institution | DOAJ |
| issn | 1930-2126 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj-art-6e87355b11464102aceeee6d6ff593a62025-08-20T03:02:26ZengNorth Carolina State UniversityBioResources1930-21262025-06-01203694869652927Colorimetric Sensing of Chlorpyrifos Pesticides Using Green Synthesized Silver Nanoparticles from Neem Root ExtractsAbidemi Mercy Babatimehin0Oyebola Elizabeth Ogunbamowo1Gabriel Olukayode Ajayi2Ali El Gamal3Talha Bin Emran4Edwin Andrew Ofudje5Mohamed Hefnawy6Department of Chemical Science, Mountain Top University, Lagos- Ibadan Expressway, Move, Ogun State, Nigeria; Department of Biochemistry, Lagos State University, Ojo, Lagos, NigeriaDepartment of Chemical Science, Mountain Top University, Lagos- Ibadan Expressway, Move, Ogun State, Nigeria; Department of Medical Biochemistry, Lagos State University College of Medicine, Ikeja, Lagos, NigeriaDepartment of Biochemistry, Mountain Top University, Lagos - Ibadan Expressway, Move, Ogun state, NigeriaDepartment of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi ArabiaDepartment of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown University, Providence, RI 02912, USA; Department of Pharmacy, Faculty of Health and Life Science, Daffodil International University, Dhaka 1207, BangladeshDepartment of Chemical Science, Mountain Top University, Lagos- Ibadan Expressway, Move, Ogun State, NigeriaDepartment of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi ArabiaThis study explores the colorimetric sensing of chlorpyrifos (CP) pesticides using neem root extracts-synthesized silver nanoparticles (NRE-AgNPs). The NRE-AgNPs were synthesized via a cost-effective bio-reduction method from neem (Azadirachta indica) and evaluated for their pesticide’s colorimetric sensing property. Phytochemical analysis confirmed the presence of tannins (80.4 mg/mL), phenols (60.8 mg/mL), flavonoids (54.6 mg/mL), alkaloids (28.9 mg/mL), reducing sugars (59.1 mg/mL), and cardiac glycosides (47.6 mg/mL), which facilitated nanoparticle formation and stability. Scanning electron microscopy revealed nanoparticles with an average particle size of 68.3 nm, while energy-dispersive X-ray spectrum confirmed the presence of silver (0.14% atomic, 0.25% weight) alongside stabilizing organic compounds. UV-Vis spectroscopy confirmed NRE-AgNP synthesis with a surface plasmon resonance peak at 405 nm. The nanoparticles responded sensitively to the presence of the chlorpyrifos, especially at 300 to 350 nm, marking a clear deviation from their original 405 nm signature, thus confirming the viability of AgNPs as an optical sensor. This study underscores the potential of neem root-based AgNPs as a sustainable and eco-friendly solution for pesticide sensing, offering promising applications in the environmental field.https://ojs.bioresources.com/index.php/BRJ/article/view/24621azadirachta indicacolorimetric sensingnanoparticlespesticidesphytochemicals |
| spellingShingle | Abidemi Mercy Babatimehin Oyebola Elizabeth Ogunbamowo Gabriel Olukayode Ajayi Ali El Gamal Talha Bin Emran Edwin Andrew Ofudje Mohamed Hefnawy Colorimetric Sensing of Chlorpyrifos Pesticides Using Green Synthesized Silver Nanoparticles from Neem Root Extracts BioResources azadirachta indica colorimetric sensing nanoparticles pesticides phytochemicals |
| title | Colorimetric Sensing of Chlorpyrifos Pesticides Using Green Synthesized Silver Nanoparticles from Neem Root Extracts |
| title_full | Colorimetric Sensing of Chlorpyrifos Pesticides Using Green Synthesized Silver Nanoparticles from Neem Root Extracts |
| title_fullStr | Colorimetric Sensing of Chlorpyrifos Pesticides Using Green Synthesized Silver Nanoparticles from Neem Root Extracts |
| title_full_unstemmed | Colorimetric Sensing of Chlorpyrifos Pesticides Using Green Synthesized Silver Nanoparticles from Neem Root Extracts |
| title_short | Colorimetric Sensing of Chlorpyrifos Pesticides Using Green Synthesized Silver Nanoparticles from Neem Root Extracts |
| title_sort | colorimetric sensing of chlorpyrifos pesticides using green synthesized silver nanoparticles from neem root extracts |
| topic | azadirachta indica colorimetric sensing nanoparticles pesticides phytochemicals |
| url | https://ojs.bioresources.com/index.php/BRJ/article/view/24621 |
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