Triphala green nano colloids: synthesis, characterization and screening biomarkers

  • S. Ranjani
  • K. Tamanna
  • S. HemalathaEmail author
Original Article


Silver nanocolloids are synthesized using the extract of Triphala which is a compound formulation consisting of three different mixtures of plants (Emblica officinalis, Terminalia belerica, Terminalia chebula) (Tp). Formulating the Triphala extracts into silver nanocolloids (TpAgNc) can cure harmful diseases and can bring remarkable changes in the medicinal field because of the synergistic effect of silver and extract. Biophysical characterization of TpAgNc was performed using UV–visible spectroscopy, FT-IR, FESEM, EDAX, Particle size distribution and zeta potential. Antimicrobial activity of TpAgNc was evaluated against biofilm-forming clinical strains of Klebsiella pneumoniae. minimum susceptibility concentration, minimum bactericidal concentration, growth and biofilm inhibition assays were performed. TpAgNc showed potential antibacterial and antibiofilm activity against biofilm-forming K. pneumoniae. Further, the expression of antibiotic-resistant gene CTXM-15 and Amp C was analysed in TpAgNc treated and control. The expressions of both CTXM-15 and Amp C were downregulated in TpAgNc-treated pathogenic K. pneumonia when compared to control. Our results suggest that there is a strong correlation between biofilm formation, virulence and CTXM-15 expression in clinical strains of K. pneumoniae. The present research work revealed that TpAgNc can be incorporated in different formulations to control pathogenic bacteria causing life-threatening infections in humans and animals.


Silver nanocolloids Triphala K. pneumoniae CTXM-15 AmpC 



The authors gratefully acknowledges the Ministry of Science and Technology, Department of Science and Technology (KIRAN Division) (GoI), New Delhi. (Ref No. DST/WOS-B/2018/1583-HFN (G)). The authors also thankful to B.S. Abdur Rahman Institute of science & Technology, Chennai for providing research facilities in school of life sciences.

Compliance with ethical standards

Conflict of interest

Authors have no conflict of interest.


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Copyright information

© King Abdulaziz City for Science and Technology 2019

Authors and Affiliations

  1. 1.School of Life SciencesB.S.Abdur Rahman Crescent Institute of Science and TechnologyChennaiIndia

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