Fig. 5
Biofilm biomass quantification using crystal violet staining after 24 h growth of Gram-negative P. fluorescens (a) and Gram-negative P. putida (b) 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 in comparison with all other conditions (p < 0.05)