A strain of Vibrio sp. isolated from marine sediments produced large quantities of bright red pigments that could be used to dye many fibers including wool, nylon, acrylics, and silk. Characterization of the pigments by electrospray ionization mass spectrometry (ESI-MS) and nuclear magnetic resonance (NMR) revealed three prodiginine-like structures with nonpolar characteristics and low molecular mass. UV–visible spectra of the major constituent in methanol solution showed absorbance at λmax 530 nm wavelength. The accurate mass result showed that the main isolated product has a molecular mass of m/z 323.1997. Further analysis using mass fragmentation (MS/MS), 1H NMR, COSY, HMQC NMR and DEPT confirmed the detailed structure of the pigment with an elementary composition of C20H25N3O. Fabrics dyed with the microbial prodiginines demonstrated antibacterial activity.
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机译：一株弧菌。从海洋沉积物中分离出的大量鲜红色颜料可用于染色许多纤维，包括羊毛，尼龙，丙烯酸纤维和丝绸。通过电喷雾电离质谱（ESI-MS）和核磁共振（NMR）对颜料进行表征，发现具有非极性特性和低分子量的三种类似地精的结构。甲醇溶液中主要成分的紫外可见光谱显示在λmax530 nm波长处有吸收。精确的质量结果表明，主要的分离产物的分子量为m / z 323.1997。使用质量裂解（MS / MS），1 H NMR，COSY，HMQC NMR和DEPT进行的进一步分析证实了具有C20H25N3O元素组成的颜料的详细结构。用微生物蛋白原染色的织物显示出抗菌活性。
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