abstract |
The present invention provides a method for producing lactic acid, which removes calcium components and sulfuric acid in a lactic acid solution derived from a microorganism culture. The present invention provides a method for producing lactic acid, characterized in that the calcium component and sulfuric acid in a lactic acid solution derived from a microorganism culture solution are separated by a nanofiltration membrane to remove the calcium component and sulfuric acid. What to provide. [Selection figure] None |