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Natural surfactin is a mixture of cyclic lipopeptides built from variants of a heptapeptide and a β-hydroxy fatty acid with chain lengths of 13–15 carbon atoms. The lipopeptide biosurfactant was produced byBacillus subtilisOKB 105 and part of the material subjected to esterification of its Glu and Asp residues. High-resolution preparative reversed phase HPLC on EnCaPharm 100 of surfactin and its monomethyl...
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