Do silver nanoparticles synthesized using plant extrats need centrifugation prior testing antimicrobial activity?

I get silver nanoparticles using plant extratcs, with UV - Vis around 436 nm. TEM also confirms nanoparticle formation, however when I test for antimicrobial activity (e.g. E.coli for example) we...

11 November 2017 5,058 7 View