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7月23日星期二
provides nutrients
If the body to promote the growth of potassium lactate bacteria in vivo metabolic activity of normal play, can be directly available for the host to provide essential amino acids and vitamins (such as vitamin B and K), also increase the biological activity of mineral elements, and then to the host magnessium lactate nutrients to enhance animal nutrition metabolism, direct and promote its growth. Dalmin etc. (2001) study reported that lactic acid bacteria can improve water quality, improve the survival rate of P. monodon, growth rate and health. Hamad (1979) test proved, wheat, rice and other cereal fermented with lactic acid bacteria, greatly improved nutritional value. In addition, lactic acid bacteria produce acid metabolites acidic intestinal environment, and general digestive enzymes suitable acidic PH value (6.5 amylase, glucoamylase 4.4), thus facilitating digestion and absorption of nutrients. Jun Ho machine can also strengthen the production and secretion of intestinal peristalsis, but also can promote digestion and absorption of nutrients (tension et al, 2000).
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