• AJI JOVITHA A.T
• Dr.Deivasigamani.B

ABSTRACT Mangroves fill in saline water front natural surroundings in the tropical and subtropical areas. Mangrove environment is of an incredible natural and financial noteworthiness. The AgNPs exhibit higher antibacterial activity on marine ecosystem. In this study, we investigated the antibacterial effects of silver nanoparticles (AgNps) were tested against, two gram-positive and gram-negative pathogenic bacteria viz., Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae at 20 µg concentration. They were highly sensitive to AgNPs, whereas less sensitive to AgNO3.Furthermore, the green synthesized AgNPs from Rhizophora mucronata screened for antibacterial activity. In the antibacterial activity of optimized AgNPs was found remarkably sensitive to the AgNPs with 23mm of inhibition zone. The standard antibiotics of streptomycin at 10 µg, when tested against the bacteria, which revealed high antibacterial activity against all the pathogenic bacteria. The MIC concentration evaluated against the bacteria showed were 18.10 ± 0.65 µg/mL for Bacillus subtilis and Staphylococcus aureus showed 26.05 ± 0.92 µg/mL, respectively. Our research outcome opens up new improved antimicrobial composition in pharmaceutical and medical sectors for the treatment of bacterial disease for marine and aquaculture

Rhizophora mucronata, Antimicrobial, Minimum Inhibitory Concentration (MIC)

" STUDY ON ANTIBACTERIAL EFFECTS OF SILVER NANOPARTICLES FROM MANGROVE (RHIZOPHORA MUCRONATA) BARK EXTRACT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 12, page no.297-302, December-2020, Available :http://www.jetir.org/papers/JETIR2012041.pdf

" STUDY ON ANTIBACTERIAL EFFECTS OF SILVER NANOPARTICLES FROM MANGROVE (RHIZOPHORA MUCRONATA) BARK EXTRACT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 12, page no. pp297-302, December-2020, Available at : http://www.jetir.org/papers/JETIR2012041.pdf