Green synthesis of antimicrobial selenium and gold nanoparticles using Aegle marmelos fruit extract

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Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Pub Email:
Doi: 10.1007/s42535-022-00469-1
First Page: 971
Last Page: 979
Views: 1310

Keywords: Selenium nanoparticle, Gold nanoparticle, Aegle marmelos , Antibacterial activity, Pathogens


Nanoparticles of selenium and gold when synthesized through the green route using aqueous plant extract, exhibit strong antimicrobial activities with minimum or no toxicity. Aegle marmelos (L) Correa, an ethnobotanically well-known fruit for its wide medicinal values, has been utilized in this work for the synthesis of both, selenium and gold nanoparticles. The synthesis of the nanoparticles was first detected by the change in colour and formation of colloids in the reaction solution, followed by UV–visible spectroscopy. The λmax of selenium and gold nanoparticles were found at 333 nm and 552 nm, respectively. The XRD spectrum confirms the pure crystalline nature of the nanoparticles. Scanning electron microscopic image revealed their shape as mostly spherical, however, few of the gold nanoparticles were found to be triangular. Both the nanoparticles have shown significantly strong antibacterial activity against the tested pathogens (Micrococcus luteus, Klebsiella pneumoniae, Staphylococcus epidermidis, Pseudomonas aeruginosa, and Staphylococcus aureus) and the best activity has been observed in S. epidermidis for both SeNP and AuNP.

Selenium nanoparticle, Gold nanoparticle, 
              Aegle marmelos
            , Antibacterial activity, Pathogens

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The authors would like to acknowledge the Department of Biotechnology, Botany, Chemistry, and Instrumentation & USIC (SAIF), Gauhati University; and Guwahati Biotech Park, Assam, India for providing the technical and analytical facilities in conducting the research work.

Author Information

Sarkar Rajesh Dev
Department of Biotechnology, Gauhati University, Guwahati, India

Mena Sushmita
Department of Microbiology, Central University of Tamil Nadu, Thiruvarur, India

Kumar Amrit
Department of Botany, Gauhati University, Guwahati, India

Sharma Rantumoni
Department of Botany, Gauhati University, Guwahati, India

Nath Namita
Department of Botany, Gauhati University, Guwahati, India

Jha Dhruva Kumar
Department of Botany, Gauhati University, Guwahati, India

Kalita Mohan Chandra
Department of Biotechnology, Gauhati University, Guwahati, India