Lactic acid - main properties

1, moisture: with water, ethanol, glycerol miscible, acidic aqueous solution, PKa = 2.5. Not Soluble in chloroform, carbon disulfide and petroleum ether. Heating under normal pressure, concentrated to 50%
Part Calcium lactate into milk, so the product often contains 10% to 15% of the milk anhydride, because of its hydroxyl
Group and a carboxyl group, under certain conditions, the ferrous lactate reaction can occur, the product has three.
2 toxicity: rat oral LD50 for 3.73g/kg weight; ADI Unlimited regulations. Lactic acid has three Kinds of isomers: DL-type, D-type and L-type. The rats were divided into three groups, each cast Pharmacy An amount of 1.7g/kg body weight, DL-type, D-type and L-lactic acid, oral anatomy detected after three hours
, DL-lactic acid can increase the liver glycogen, 40% ~ 95% in the absorption and transformation within 3h; D-and L-Lactic acid in the blood lactate increased, there is excreted in the urine.
3, Biology: lactate dehydrogenase in the fermentation process pyruvate is converted to L-lactic acid. In General lactate metabolism and movement is generated continuously, but the concentration is generally not increase. Only in lactate production speed up the process, lactic acid can not be transported in a timely manner when the concentration will increase. Acid transport speed by a series of factors, including monocarboxylic transporter, lactate dehydrogenase
The concentration of catalase and isomeric forms, tissue oxidation. Generally blood lactate Concentration when it is not moving 1-2mmol / L, in the strong movement can rise to 20mmol / L.