Eco-friendly synthesis of gold nanoparticles using carboxymethylated gum Cochlospermum gossypium (CMGK) and their catalytic and antibacterial applications

  • Kondaiah SekuEmail author
  • Bhagavanth Reddy GangapuramEmail author
  • Babu Pejjai
  • Mushtaq Hussain
  • Syed Sulaiman Hussaini
  • Narasimha Golla
  • Kishore Kumar Kadimpati
Original Paper


Gold nanoparticles (AuNPs) were synthesized by the green method with activated Cochlospermum gossypium (carboxymethylated Cochlospermum gossypium gum or carboxymethylated gum kondagogu: CMGK) as stabilizer and reducing agent. The obtained size of AuNPs was 11 ± 2 nm. The impacts of HAuCl4 concentration, CMGK concentration, and reaction time on the synthesis of AuNPs were investigated. The techniques, UV − visible spectroscopy, FTIR, DLS, TEM, and powder XRD, were used for characterization. The reducing capacity of the synthesized CMGK-AuNPs was tested for reduction of 4-nitrophenol (4-NP) along with NaBH4. The effects of NaBH4, catalyst dose, and temperature were studied for reduction of 4-NP. The AuNPs showed good antibacterial activity against E. coli and Bacillus subtilis. The outcomes of the study indicated that CMGK–AuNPs have notable antimicrobial and environmental applications.


Gold nanoparticles Carboxymethylated kondagogu gum Antibacterial activity Catalytic activity 



Dr. S. Kondaiah is thankful to UGC, New Delhi, India, for the financial support from UGC Minor Research Project Grant (Sanction letter: F. No.: 4–4/2014–15(MRP-SEM/UGC-SERO). Dr.Seku wishes to thank the Principal and the Management of Malla Reddy Engineering College (Autonomous) for research facilities.

Compliance with ethical standards

Conflict of interests

There is no conflict of interest among the authors to publish the work.


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Copyright information

© Institute of Chemistry, Slovak Academy of Sciences 2019

Authors and Affiliations

  • Kondaiah Seku
    • 1
    Email author
  • Bhagavanth Reddy Gangapuram
    • 2
    Email author
  • Babu Pejjai
    • 3
  • Mushtaq Hussain
    • 1
  • Syed Sulaiman Hussaini
    • 1
  • Narasimha Golla
    • 4
  • Kishore Kumar Kadimpati
    • 5
  1. 1.Department of ChemistryShinas College of TechnologyShinasSultanate of Oman
  2. 2.Department of ChemistryPalamuru University P.G. CenterMahbubnagarIndia
  3. 3.Solar Photovoltaic Laboratory, Department of PhysicsSri Venkateswara UniversityTirupatiIndia
  4. 4.Department of VirologySri Venkateswara UniversityTirupatiIndia
  5. 5.Department of PharmaceuticsNarayana Pharmacy CollegeNelloreIndia

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