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26日星期一
Much too alkaline irritant active calcium
If active calcium too alkaline, irritation does not apply to infants and the elderly, too; Ethyl lactate in lactate easily to the human body fatigue; gluconate does not apply to most people with diabetes; calcium acetate due to acute toxic, easy to cause high blood pressure, soft tissue calcification, kidney stones and other side effects, the FDA has not been certified and so on. There also can not ignore the problem, select a high buffered lactic acid and bioavailability of calcium is one of the keys to improve calcium effect. Affect calcium absorption and bioavailability of many factors, in addition to calcium own factors, but also with individual age, the level of calcium in the body, diet, and calcitonin, estrogen and other hormone secretion. Generally, the absorption of calcium and more conventional 30% to 40%.
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