Abstract
The oxidation of steroid ketones, as oxidation products of hydroxysteroids, by Proactinomyces erythropolis [Nocardia e], results in disruption of the molecule. Yields of degradation products were small but,by a continuous culture process described, sufficient individual products were isolated for identification. Two types of oxidation are encountered, ring fission at >CO, and removal of the side chain. A steroid cycle in nature is suggested with the soil microflora providing a disposal mechanism for waste materials.