[Consumption of organic carbon sources and biosynthesis of lactic acid by the photosynthetic bacterium Rhodobacter sp. D-4].

Nonsulfur photosynthetic purple bacteria isolated from the Dzhermuk mineral springs (Armenia) were grown on sugar-containing media and found to be capable of synthesizing L(+)-lactic acid. Various organic compounds were tested as possible sole sources of carbon and an electron donors required to support bacterial growth and biosynthesis of lactic acid under various growth conditions.