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Pigment production by Streptococcus agalactiae in quasi-defined media
M Rosa-Fraile1, A Sampedro, J Rodríguez-Granger
1Microbiology Service, Virgen de las Nieves Hospital, 18014 Granada.
Applied and Environmental Microbiology
|January 3, 2001
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.