Antiadherent and Antibiofilm Activity of Humulus lupulus L. Derived Products: New Pharmacological Properties

Figure 2

Antibiofilm activity of Humulus lupulus-derived extracts and xanthohumol against S. aureus ATCC 29213. Bacteria were cultured for 24 h in absence or constant presence of the phytocompounds used at their 1/2, 1/4, and 1/8 MICs. Biofilm formation was assessed using a LIVE/DEAD BacLight kit. Results are presented as the percentage of the biomass viability, compared to the control. All presented results are mean from 2 independent experiments performed in quadruplicate ± S.D. Black bars: control; grey bars: spent hops; open bars: hop cones; striped bars: xanthohumol.