title: Isolation and structural identification of bifidogenic growth stimulator produced by Propionibacterium freudenreichii.
abstract: A bifidogenic growth stimulator produced by Propionibacterium freudenreichii was purified, and its chemical structure was determined. We obtained 7.1 mg of a bifidogenic growth stimulator from 1738 g of lyophilized P. freudenreichii cells by silica gel column chromatography, Sephadex LH-20 column chromatography, and preparative HPLC. The mass of the bifidogenic growth stimulator was 217.037 (C11H7NO4) as determined by high resolution mass spectrometry. Various experimental analyses indicated that the chemical structure of the bifidogenic growth stimulator was 2-amino-3-carboxy-1,4-naphthoquinone.
authors.affiliation: Central Research Institute, Meiji Milk Products Co., Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Mori
authors.forename: Y
authors.initials: Y
authors.lastname: Sato
authors.forename: N
authors.initials: N
authors.lastname: Taketomo
authors.forename: T
authors.initials: T
authors.lastname: Kamiyama
authors.forename: Y
authors.initials: Y
authors.lastname: Yoshiyama
authors.forename: S
authors.initials: S
authors.lastname: Meguro
authors.forename: H
authors.initials: H
authors.lastname: Sato
authors.forename: T
authors.initials: T
authors.lastname: Kaneko
mesh_terms: D001644:Bifidobacterium / Q000187:drug effects / Q000254:growth & development*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002851:Chromatography, High Pressure Liquid; D006133:Growth Substances / Q000096:biosynthesis / Q000737:chemistry* / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D009285:Naphthoquinones / Q000737:chemistry* / Q000302:isolation & purification*; D011424:Propionibacterium / Q000378:metabolism*
chemical_list: C108806:2-amino-3-carboxy-1,4-naphthoquinone; D006133:Growth Substances; D009285:Naphthoquinones