Fig. 2
From: Rhamnolipids and surfactin inhibit the growth or formation of oral bacterial biofilm
Inhibition of biofilm formation by biosurfactants. Total biofilm formation of (a, d) A. actinomycetemcomitans Y4, (b, e) S. mutans UA159, and (c, f) S. sanguinis ATCC10556 by rhamnolipids (a-c) or surfactin (d-f). Rhamnolipids was used at a final concentration ranging from 6.5 w/v% to 1.21 × 10− 8 w/v% (a 2-fold serial dilution was applied) in BHI broth. Surfactin was used at a final concentration ranging from 10.36 w/v% to 1.93 × 10− 8 w/v% (a 2-fold serial dilution was applied) in BHI broth. Error bars indicate standard deviations of at least three experiments