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9月24日星期二
Major natural pigment extracted from plants
Major natural pigment extracted from plants , many of them with physical activity. Over the past decade , the state approved the use of natural colorants varieties increased from 20 kinds of 40 kinds of country is currently the world's natural coloring agent approved by most countries. Calcium lactate colorants have disease prevention features, such as turmeric has anti-cancer effect , saffron yellow antihypertensive effect , an antioxidant red pepper , yellow corn have anti-cancer , anti-oxidation, buffered lactic acid effect of red yeast rice , mulberry red lipid-lowering effect , peanut red and blood clotting , grape skin red and lipid Metabolism , comfrey has anti-inflammatory effect of red , green tea is known as the role of lipids and lutein from marigold extract can effectively reduce age-related macular degeneration and cataracts and other diseases.
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