Fig. 5From: Biosurfactant production by AL 1.1, a Bacillus licheniformis strain isolated from Antarctica: production, chemical characterization and properties a Partial electrospray mass spectrum in the positive-ion mode. b Partial electrospray mass spectrum in the negative-ion mode. c MS/MS of the sodium-ionized peak of the lipopeptide with m/z 1043’7. d Structure of the cyclic lipopeptide and fragmentations obtained by MS/MSBack to article page