Pure lactic acid is a colorless liquid, is a colorless to pale yellow liquid. Odorless, hygroscopic. The relative density of 1.2060 (25/4 ℃). Melting point 18 ℃. Boiling point 122 ℃ (2kPa). Refractive index nD (20 ℃) ??1.4392. With water, ethanol, glycerin, insoluble in chloroform, carbon disulfide and petroleum ether. Heating under normal pressure, concentrated to 50%, part of the anhydride into milk, thus products often contain 10% -15% of the milk anhydride.
2013年8月8日星期四
Calcium lactate production and use
Gelatinization of rice by high pressure, diluted with 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. Sodium lactate 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. Used as a nutrient supplement for calcium, for bread, cakes and other buffering agents, leavening agent. Also be used for bread, cakes, pasta, powdered milk market system, tofu, miso, magnessium lactate. As with other calcium supplements which are easily absorbed. As drug use, can prevent calcium deficiency disease, such as rickets, tetany, and women's pregnancy and lactation required calcium supplement.
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