Some strains of S. marcescens are capable of producing pigment, the intensity of which ranges from dark red to pale pink, depending on the age of the colonies. The pigment can be present after incubation at room temperature but usually disappears after subculturing. The pigment was extractred by 1902 and named "prodigiosin" . Serratia marcescens has a predilection for growth on foodstuffs, espe...

a simple acetone extraction process which they used in studying the spectral absorption of prodigiosin and 4 fractions separated by paper chromatography. It is possible, however, to study the spectral absorption of the pigment while it is still in the cells. The absorption spectra of the extract and the whole cells should agree if the extraction process does not affect the pigment; the native p...

The effect of dissolved oxygen concentrations on the behavior of Serratia marcescens and on yields of asparaginase and prodigiosin produced in shaken cultures and in a 55-liter stainless-steel fermentor was studied. A range of oxygen transfer rates was obtained in 500-ml Erlenmeyer flasks by using internal, stainless-steel baffles and by varying the volume of medium per flask, and in the fermen...

OBJECTIVE To isolate and characterize indigenous algicidal bacteria and their algae-lysing compounds active against Microcystis aeruginosa, strains TH1, TH2, and FACHB 905. METHODS The bacteria were identified using the Biolog automated microbial identification system and 16S rDNA sequence analysis. The algae-lysing compounds were isolated and purified by silica gel column chromatography and ...

Bacteria produce pigments for various reasons and it plays an important role. Some bacteria such as cyanobacteria have phycobilin pigments to carry out photosynthesis. Other example for pigment-producing bacterial strains includes Serratia marcescens that produces prodigiosin, Streptomyces coelicolor (prodigiosin and actinorhodin), Chromobacterium violaceum (violacein) and Thialkalivibrio versu...

1 Microbial Culture Collection, National Centre for Cell Science, Pashan, Pune – 411021, India. 2 Department of Microbiology, Elphinstone College, Fort, Mumbai 400 032, India. 3 Department of Botany, Savitribai Phule Pune University, Pune – 411007, India. 4 Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur 416013, India. 5 Biochemical Division, National Ch...

Sir: As part of a broad program on the genetics of Streptomyces coelicolor A3(2)1), RUDD and HOPWOOD2) carried out genetic studies on a nondiffusible red mycelial pigment produced by this organism. By UV irradiation of strain B18, a mutant blocked in the synthesis of the diffusible pigment actinorhodin3), they obtained a series of redmutants. These all mapped in a narrow region of the chromosom...

The genus Serratia a member of the Enterobacteriaceae (see Introduction to the Family Enterobacteriaceae from the second edition.), is comprised of a group of bacteria that are related both phenotypically and by DNA sequence. The type species of the genus is Serratia marcescens. Some species and biotypes of Serratia produce a nondiffusible red pigment, prodigiosin, or 2-methyl-3-amyl-6-methoxyp...