Antibacterial Colorants: Characterization of Prodiginines and Their Applications on Textile Materials

• DOI: 10.1021/bp070481r
• Publication Date: 2008-05-17T07:00:22Z
• Authors: Farzaneh Alihosseini; Kou‐San Ju; Jozsef Lango; Bruce D. Hammock; Gang Sun
• Keywords: Absorbance; DEPT; Proton NMR; Fragmentation

Abstract A strain of Vibrio sp. isolated from marine sediments produced large quantities bright red pigments that could be used to dye many fibers including wool, nylon, acrylics, and silk. Characterization the by electrospray ionization mass spectrometry (ESI‐MS) nuclear magnetic resonance (NMR) revealed three prodiginine‐like structures with nonpolar characteristics low molecular mass. UV‐visible spectra major constituent in methanol solution showed absorbance at λ max 530 nm wavelength. The accurate result main product has a m / z 323.1997. Further analysis using fragmentation (MS/MS), 1 H NMR, COSY, HMQC NMR DEPT confirmed detailed structure pigment an elementary composition C 20 25 N 3 O. Fabrics dyed microbial prodiginines demonstrated antibacterial activity.