| abstract |
Succinic acid is produced by allowing a bacterium modified to enhance fumarate reductase activity or cell preparation thereof to react with an organic raw material in a reaction solution containing one of a carbonate ion, a bicarbonate ion, and carbon dioxide gas to generate succinic acid. More preferably, succinic acid is produced by allowing a bacterium modified to enhance activities of fumarate reductase and pyruvate carboxylase and decrease lactate dehydrogenase activity or cell preparation thereof to react with an organic raw material in a reaction solution containing one of a carbonate ion, a bicarbonate ion, and carbon dioxide gas to generate succinic acid. Succinic acid is obtained by collecting the produced succinic acid. |