| 摘要 |
PURPOSE:To enhance the productivity of the title substance by aerobically incubating lactic bacteria in a medium containing iron porphyrin, hemoprotein, etc., and a saccharide source. CONSTITUTION:Lactic bacteria (pref. such bacteria belonging to Lactococcus sp. having diacetyl productivity) is aerobically incubated in a medium containing at least one kind of substance selected from iron porphyrin, hemoprotein and iron porphyrin-contg. tissue or blood and a saccharide source such as glucose and, if needed, at least one kind of metal inorganic or organic salt of iron, copper or molybdenum. |
