surfactin
surfactin
"Any mixture comprising isoforms of a bacterial cyclic lipopeptide antibiotic produced by various strains of Bacillus subtilis. The isoforms are cyclodepsipeptides containing at least seven amino acid residues. Among the most effective biosurfactants, surfactin can reduce the surface tension of water from 72 to 27 mN/m at a concentration as low as 0.005%."