Green synthesis of silver nanoparticles using Viola odorata and Onosma hispidum: Evaluation of their antimicrobial, antioxidant, and hemolytic properties against multidrug-resistant microbes

IF 2.3 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Electronic Journal of Biotechnology Pub Date : 2025-03-01 DOI:10.1016/j.ejbt.2024.12.003
Aneeta Andleeb , Aneeza Khalid , Sadia Khalil , Hammad Arshad , Saima Sadaf
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Abstract

Background

Rapid increase in antimicrobial resistance poses a significant threat to global health, necessitating alternative strategies to combat multi-drug resistant (MDR) pathogens. Advances in nanobiotechnology may offer promising solutions to this pressing issue. This study revolves around developing an efficient method for synthesizing silver nanoparticles (AgNPs) based on aqueous extracts of Viola odorata leaves (VoL) and Onosma hispidum root barks (OhRb), traditional medicinal perennial herbs, followed by evaluating their antioxidant and antimicrobial potential against MDR pathogens.

Results

The synthesis of nanoparticles was completed in 15–20 min at 55–60°C using green approach. The characterized AgNPs showed significant antimicrobial activity against Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Staphylococcus aureus, Streptococcus agalactiae, and Candida albicans, with zones of inhibition ranging from 12 mm ± 0.636 to 25 mm ± 0.282. Minimum inhibitory concentration and minimum bactericidal concentrations ranged from 0.39 to 6.125 µg/mL. Additionally, the nanoparticles demonstrated significant antioxidant potential compared to the aqueous plant extracts. Importantly, the investigation into the effects of the nanoparticles on red blood cells revealed no pronounced hemolysis even at higher concentrations (300 µg/mL) of VoL-AgNPs and OhRb-AgNPs, demonstrating their biocompatibility and hemolytic safety profile.

Conclusions

The VoL-AgNPs and OhRb-AgNPs exhibit appreciable antimicrobial and antioxidant activities with minimal hemolysis, underscoring their potential to combat MDR pathogens, and further applicability in therapeutic settings. However, in vivo studies are warranted to explore their biomedical applications, such as in wound dressings and treatments for disorders caused by free radical damage.
How to cite: Andleeb A, Khalid A, Khalil S, et al. Green synthesis of silver nanoparticles using Viola odorata and Onosma hispidum: Evaluation of their antimicrobial, antioxidant, and hemolytic properties against multidrug resistant microbes. Electron J Biotechnol 2025;74. https://doi.org/10.1016/j.ejbt.2024.12.003.

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来源期刊
Electronic Journal of Biotechnology
Electronic Journal of Biotechnology 工程技术-生物工程与应用微生物
CiteScore
5.60
自引率
0.00%
发文量
50
审稿时长
2 months
期刊介绍: Electronic Journal of Biotechnology is an international scientific electronic journal, which publishes papers from all areas related to Biotechnology. It covers from molecular biology and the chemistry of biological processes to aquatic and earth environmental aspects, computational applications, policy and ethical issues directly related to Biotechnology. The journal provides an effective way to publish research and review articles and short communications, video material, animation sequences and 3D are also accepted to support and enhance articles. The articles will be examined by a scientific committee and anonymous evaluators and published every two months in HTML and PDF formats (January 15th , March 15th, May 15th, July 15th, September 15th, November 15th). The following areas are covered in the Journal: • Animal Biotechnology • Biofilms • Bioinformatics • Biomedicine • Biopolicies of International Cooperation • Biosafety • Biotechnology Industry • Biotechnology of Human Disorders • Chemical Engineering • Environmental Biotechnology • Food Biotechnology • Marine Biotechnology • Microbial Biotechnology • Molecular Biology and Genetics •Nanobiotechnology • Omics • Plant Biotechnology • Process Biotechnology • Process Chemistry and Technology • Tissue Engineering
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