 It is an antibiotic produced by the Gram-positive endospore-forming bacteria "Bacillus subtilis".In the course of various studies of its properties, surfactin was found to exhibit effective characteristics like antibacterial, antiviral, antifungal, anti-mycoplasma and hemolytic activities.Surfactin's structure consists of a peptide loop of seven amino acids (L-aspartic acid, L-leucine, glutamic acid, L-leucine, L-valine and two D-leucines), and a hydrophobic fatty acid chain thirteen to fifteen carbons long which allows it to penetrate cellular membranes.