Phytogenic Synthesis of Platinum Nanoparticles: Characterization and In Vitro Biological Evaluation of Antioxidant, Antimicrobial, and Anticancer Activities.
- 1Department of Physics, SNJBs KKHA Arts, SMGL Commerce and SPHJ Science College, Chandwad, Maharashtra, India.
- 2Department of Applied Sciences, K K Wagh Institute of Engineering Education and Research, Nashik, Maharashtra, India.
Abstract
This study presents the eco-friendly synthesis of platinum nanoparticles (PtNPs) utilizing Coleus barbatus leaf extract as both a reducing and stabilizing agent. Fourier transform infrared spectroscopy (FTIR) identified key biomolecules, including ascorbic acid, terpenoids, amino acids, and hydrocarbons, responsible for reducing platinum ions. X-ray diffraction (XRD) analysis confirmed a face-centered cubic (FCC) crystal structure with a crystallite size of 62 nm. Zeta potential measurements, ranging from 9.4 to 11.8 mV, indicated moderate colloidal stability. Morphological characterization via scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) revealed spherical PtNPs with diameters between 42 and 65 nm. The biological efficacy of the synthesized PtNPs was assessed through antimicrobial, antioxidant, and anticancer assays. The NPs demonstrated significant antibacterial activity against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive), effectively inhibiting bacterial growth. Antioxidant evaluation showed strong free radical scavenging capabilities, particularly against superoxide ions and hydroxyl radicals. Furthermore, cytotoxicity tests on the MCF-7 breast cancer cell line revealed potent anticancer properties, yielding an IC₅₀ value of 2.28. These findings underscore the potential of C. barbatus-mediated PtNPs as effective agents for antimicrobial treatments, antioxidant applications, and cancer therapy, highlighting the promise of green chemistry in nanomedicine.
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BibTeX
@article{ahemad2026phytogenic,
title = {{Phytogenic Synthesis of Platinum Nanoparticles: Characterization and In Vitro Biological Evaluation of Antioxidant, Antimicrobial, and Anticancer Activities.}},
author = {Huda Imran Ahemad and Manoj A More and Yogesh B Aher and Sarika D Shinde and Dnyaneshwari Y Patil and Gotan H Jain and Ganesh E Patil},
journal = {Chemistry \& biodiversity},
year = {2026},
month = nov,
doi = {10.1002/cbdv.71899},
url = {https://europepmc.org/article/MED/42967601},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Phytogenic Synthesis of Platinum Nanoparticles: Characterization and In Vitro Biological Evaluation of Antioxidant, Antimicrobial, and Anticancer Activities.
AU - Huda Imran Ahemad
AU - Manoj A More
AU - Yogesh B Aher
AU - Sarika D Shinde
AU - Dnyaneshwari Y Patil
AU - Gotan H Jain
AU - Ganesh E Patil
PY - 2026
DA - 2026/11/01
JO - Chemistry & biodiversity
DO - 10.1002/cbdv.71899
UR - https://europepmc.org/article/MED/42967601
AB - This study presents the eco-friendly synthesis of platinum nanoparticles (PtNPs) utilizing Coleus barbatus leaf extract as both a reducing and stabilizing agent. Fourier transform infrared spectroscopy (FTIR) identified key biomolecules, including ascorbic acid, terpenoids, amino acids, and hydrocarbons, responsible for reducing platinum ions. X-ray diffraction (XRD) analysis confirmed a face-centered cubic (FCC) crystal structure with a crystallite size of 62 nm. Zeta potential measurements, ranging from 9.4 to 11.8 mV, indicated moderate colloidal stability. Morphological characterization via scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) revealed spherical PtNPs with diameters between 42 and 65 nm. The biological efficacy of the synthesized PtNPs was assessed through antimicrobial, antioxidant, and anticancer assays. The NPs demonstrated significant antibacterial activity against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive), effectively inhibiting bacterial growth. Antioxidant evaluation showed strong free radical scavenging capabilities, particularly against superoxide ions and hydroxyl radicals. Furthermore, cytotoxicity tests on the MCF-7 breast cancer cell line revealed potent anticancer properties, yielding an IC₅₀ value of 2.28. These findings underscore the potential of C. barbatus-mediated PtNPs as effective agents for antimicrobial treatments, antioxidant applications, and cancer therapy, highlighting the promise of green chemistry in nanomedicine.
SN - 1612-1872
SN - 1612-1880
ER -