The present invention relates to a Rhodovulumsulfidophilum HMBA-1 (Rhodovulum sulfidophilum HMBA-1) strain and a culture thereof, wherein the Rhodovulum sulfidophilum HMBA-1 strain is easy to cultivate, and when producing livestock manure or compost or It has excellent reduction effect of ammonia and hydrogen sulfide generated in sewage organic matter, so it can be usefully used as a natural microbial preparation. Therefore, if the strain of the present invention or a culture thereof is treated in or near the origin of the odor, compared to chemical treatment, it is possible to obtain a safe and continuous odor reduction effect for humans or animals.
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