Abstract
Aqueous extracts of the Thiorhodacea Chromatium strain D, and the Athiorhodaceae
Rhodopseudomonas spheroides, Rhodospirillum ntolischianum and Rhodospirillum
rubrura were disintegrated by supersonic vibration as well as, in two additional
experiments, by detergent action.
The 850 m/~ maximum of the Chromatium infrared absorption spectrum was
reduced by aerobic supersonic disintegration. In nitrogen, this treatment did not
induce
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