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Advisor(s)
Abstract(s)
Siderophore production by Bacillus megaterium was detected, in an iron-deficient
culture medium, during the exponential growth phase, prior to the sporulation, in the presence
of glucose; these results suggested that the onset of siderophore production did not require
glucose depletion and was not related with the sporulation. The siderophore production by B.
megaterium was affected by the carbon source used. The growth on glycerol promoted the very
high siderophore production (1,182 μmol g−1 dry weight biomass); the opposite effect was
observed in the presence of mannose (251 μmol g−1 dry weight biomass). The growth in the
presence of fructose, galactose, glucose, lactose, maltose or sucrose, originated similar concentrations
of siderophore (546–842 μmol g−1 dry weight biomass). Aeration had a positive effect
on the production of siderophore. Incubation of B. megaterium under static conditions delayed
and reduced the growth and the production of siderophore, compared with the incubation in
stirred conditions.
Description
Keywords
Bacillus megaterium Carbon source Environmental-friendly chelating agents Iron chelator Siderophore production
Citation
Publisher
Springer