title: Pigment production by Streptococcus agalactiae in quasi-defined media.
abstract: A quasi-defined medium that supports the growth of Streptococcus agalactiae as pigmented colonies has been developed. The medium contains starch, a peptic digest of albumin, amino acids, nucleosides, vitamins, and salts. The presence of free cysteine, which could be replaced with other sulphur-containing compounds and to a lesser degree by reducing agents, was required for pigment formation.
authors.affiliation: Microbiology Service, Virgen de las Nieves Hospital, 18014 Granada.
authors.forename: M
authors.initials: M
authors.lastname: Rosa-Fraile
authors.forename: A
authors.initials: A
authors.lastname: Sampedro
authors.forename: J
authors.initials: J
authors.lastname: Rodríguez-Granger
authors.forename: M L
authors.initials: ML
authors.lastname: García-Peña
authors.forename: A
authors.initials: A
authors.lastname: Ruiz-Bravo
authors.forename: A
authors.initials: A
authors.lastname: Haïdour
mesh_terms: D001431:Bacteriological Techniques; D003470:Culture Media / Q000737:chemistry; D006801:Humans; D010860:Pigments, Biological / Q000378:metabolism*; D013290:Streptococcal Infections / Q000382:microbiology*; D013292:Streptococcus agalactiae / Q000254:growth & development* / Q000302:isolation & purification* / Q000378:metabolism
chemical_list: D003470:Culture Media; D010860:Pigments, Biological