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30日星期五
Carbonate and generated lactic acid changes
This is in addition to the body's acid drainage function, which add a deep breath exclude CO2 and renal elimination of excess acid from the outside, should be attributed to the buffering effect of the blood.
Blood produced during the metabolism of non-volatile acids, such as lactic acid, pyruvic acid, also as a buffer. These substances are generally not in the alveoli in the urine, mainly by plasma bicarbonate buffer, such as the role of lactic acid generated Ethyl lactate into carbon dioxide excreted via the alveoli. Blood alkaline substance has cushioning effect, which mainly comes from food. People eat vegetables and fruit, which contains potassium lactate, potassium phosphate, disodium hydrogen phosphate and sodium bicarbonate bases, their in vivo-generated base into the blood, the cause of the OH-concentration fluid. At this point depends mainly on the plasma bicarbonate --- carbonate, and also by hydrogen phosphate buffer and plasma proteins.
订阅:
博文评论 (Atom)
没有评论:
发表评论