| abstract |
An object of the present invention is to provide a method for removing impurities derived from culture (proteins and polysaccharides) at the same time as removing inorganic salts from a microorganism culture solution and separating high-purity lactic acid advantageous for crystallization. A method for producing lactic acid comprising a step of separating lactic acid produced in a culture solution by fermentation culture of microorganisms, comprising: (a) filtering the culture solution through a nanofilter, followed by ( b) A method for producing lactic acid, comprising the step of crystallizing and isolating lactic acid. [Selection figure] None |