Fig. 7From: Synthesis and self-assembly of curcumin-modified amphiphilic polymeric micelles with antibacterial activityCell viability assays denoted by absorbance at 495 nm of pre-formed 24 h Gram-negative P. fluorescens (a) and Gram-negative P. putida (b) biofilms in the presence of micelles, curcumin-functionalised micelles and free curcumin. Control corresponds to the addition of a bacterial culture medium instead of micelles/curcumin solution. Error bars are expressed in terms of standard deviation. Asterisk means statistical significance (p < 0.05); Double asterisk means statistical significance in comparison with control (p < 0.05)Back to article page