The synthesized AgNPs in the phospholipids membranes with KLec/Ag = 2 had a ratio of 1.6 and 2 for E. coli and S. aureus, respectively.
The smaller ratio suggests that a little amount of antibacterial agent is needed to reach the bactericidal effect. Therefore, the synthesized AgNPs with a ratio lower than 2 could be considered as a bactericidal agent