Lactic acid fermentation

1, fermentation
Calcium carbonate as a neutralizing agent for ferrous lactate fermentation broth with lime water and after secondary crystallization, the direct production of lactate. Saccharification fermentation feedstock liquid or paste of rice flour can be used (corn flour) dual enzymatic hydrolysis, the specific reference to lactic acid fermentation.
2, and in France
Lactic acid at 50% of the product was added calcium hydroxide or calcium oxide for neutralization reaction, and then filtered to remove insoluble impurities, and then cooling crystallization, separation, drying products. This process is simple, but the cost is higher. 2C3H6O3 + Ca (OH) 2 → (C3H5O3) 2Ca +2 H2O
3, gelatinization of rice by high pressure, calcium lactate water cooled to 50-53 ℃, access Aspergillus and Lactobacillus delbrueckii, lactic acid fermentation metabolites, calcium phosphate and then added to obtain a crude calcium lactate, and finally purified , or with calcium carbonate and dilute acid solution, and then the solution was evaporated in the system. Refining process is the use of magnesium hydroxide and magnesium hydroxide reacts with calcium, it is the nature of cohesion, so that part of the fermentation broth and protein impurities removed after condensation, and then concentrated in vacuo, crystallization, refining lactate.