Fig 5. Comparison of pigmentation and bioassay between the wild type AM-7161 and mutant strains.
(A) and (B) Pigmentation of AM-7161 and mutant strains on solid and liquid R4 medium. (C) Absorbance values at 254 nm of crude extracts from AM-7161 and mutant strains. (D) Plate assay of antimicrobial activity of AM-7161 and mutant strains against S. epidermidis ATCC 35984. EtoAc is used as blank control. (E) The ratio of the inhibition zone diameter by mutant strains (Dm) to that of the inhibition zone by AM-7161 (Dw).