Method for the fermentative production of diacetyl and acetoin using lactic acid bacterium

摘要

A method for the fermentative production of diacetyl and acetoin, which comprises culturing a lactic acid bacterium in a culture medium containing a sugar source which said lactic acid bacterium can utilize, with shaking or under aeration in the presence of at least one additive selected from iron porphryin, heme protein, an animal tissue containing iron porphyrin, and blood and also in the presence of at least one metal salt. A culture solution containing high concentrations of diacetyl and acetoin obtained by this method or a diacetyl concentrate thereof may be used to increase or improve the flavor of foods such as oils and fats.