抄録
Fifteen components of new antibiotics, cephabacins, were isolated from the culture filtrates of Lysobacter lactamgenus YK-90, Xanthomonas lactanigenaYK-280 and X. lactaingena YK-278. They were purified by column chromatography using cation-exchange resins, activated carbon, high porous resins and cation-exchange Sephadex and by preparative reverse-phase HPLC. The basic, water-soluble antibiotics were characterized as having a cephem skeleton and oligopeptide(s) as a side chain constituent from their spectroscopic analyses and amino acid analyses.
