Blackwell Publishing Journal Backfiles 1879-2005
Abstract The laser Raman spectra of lyophilized spores of 5 species (6 strains) of Bacillus were examined. Under the experimental conditions employed, only Bacillus megaterium species showed 3 intense Raman bands at 1515, 1157 and 1007 cm−1. Spores of other species, despite their high content of dipicolinic acid, did not show distinct Raman signals.The strong, scattering bands at 1515 and 1157 cm−1 in the spectra of spores of B. megaterium may be attributable to conjugated double-bond systems, probably of membrane-associated carotenoids. Their high intensities are due to resonance enhancement.
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