Article

Comparative Study of Silver Nanoparticles: Green Synthesis, Characterization and Biological Evaluation of Carica papaya and Andrographis paniculata Leaf Extract

Author : C. Shunmugadevi and P. Palanisamy

Green synthesized the silver nanoparticles from Carica papaya and Andrographis paniculata fresh and dried leaves extracts. The entire silver nanoparticles have been characterized by UV–visible spectrophotometer, SEM, FTIR, and X-ray diffraction method. The average size of fresh leaves Carica papaya and Andrographis paniculata silver nanoparticles between 5-30 and 40-60 nm and average size of dried leaves Carica papaya and Andrographis paniculata silver nanoparticles between 20-60 and 50-70 nm. The result showed that the particles were of spherical and cubic shape in case of fresh and dried leaves Carica papaya and Andrographis paniculata silver nanoparticles. Fresh leaves Carica papaya silver nanoparticles exhibited better antimicrobial and DPPH radical scavenging than the dried leaves Carica papaya silver nanoparticles. Similarly the fresh and dried leaves Carica papaya and Andrographis paniculata silver nanoparticles can cleave DNA completely compared to untreated DNA.


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