Cladophora fascicularis Mediated Silver Nanoparticles: Assessment of Their Antibacterial Activity Against Aeromonas hydrophila

This study reports on the bioactive potential of silver nanoparticle synthesized from seaweed, Cladophora fascicularis aqueous extract. C. fascicularis assisted silver nanoparticles (Cf-AgNPs) was characterized by UV–visible spectroscopy, XRD, FT-IR, FESEM, TEM, and EDX analysis. The Cf-AgNPs exhibited a maximum absorption peak at 427 nm. The carboxyl (–C=O) and amine (N–H) groups of C. fascicularis extract is answerable for the synthesis of Cf-AgNPs. The microscopic analysis confirmed that the synthesized Cf-AgNPs are spherical in shape with an average size of 45 nm. The Cf-AgNPs exhibited a dose depended antibacterial activity against Aeromonas hydrophila . Noteworthy bacterial inhibition (19 mm) was observed at 150 µg/ml, whereas, the lowest activity (10 mm) was recorded at 25 µg/ml. Similarly, Cf-AgNPs significantly (P