Biosurfactants produced by Pseudomonas aeruginosa SB24 (rhamnolipid congeners), Bacillus amyloliquefaciens ST34 (surfactin and bacillomycin L analogues and homologues) and pigmented (P1) and non-pigmented (NP1) Serratia marcescens strains (serratamolide and glucosamine derivative homologues) were
