| 摘要 |
A method for producing L-threonine is described which includes the steps of culturing a microorganism belonging to the genus Escherichia that has an ability to produce L-threonine, in a fermentation medium containing a carbon source, a nitrogen source, and a sulfur source, and collecting L-threonine, wherein the sulfur concentration in the medium is regulated so that it is a predetermined level or lower.
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