A fed-batch fermentation method is for production of bacteriochlorophyll a (Bchla) from Rhodovulum sulfidophilum. The growth medium contains an inorganic nitrogen compound as a nitrogen source. During fermentation, the growth medium is supplemented with a succinate carbon source, an inorganic compound nitrogen source and a phosphorous source from external reservoirs connected to the fermenter vessel. After completion of the fermentation, Bchla is recovered from the separated cells.
