| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing lactic acid with a high optical purity. SOLUTION: In the production method, D-lactide or L-lactide is obtained through preferential crystallization of a crude lactide and subsequently hydrolyzed. By adding an alkali substance at hydrolysis, the lactide can be both hydrolyzed and neutralized at the same time, and a lactic acid salt can be easily obtained. COPYRIGHT: (C)2005,JPO&NCIPI |
