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21日星期三
Nonfat yogurt drink is not necessarily more healthy
It is worth mentioning that not necessarily more healthy to drink skim milk, because milk anti-cancer substances and vitamins A, Ethyl lactate in milk fat. Unless your doctor for healthy people, if only drink a small cup of yogurt a day, the proposed election of full-fat. For people with diabetes, choose sugar-free yogurt more at ease. Yogurt contains bacteria, determine the health value of yogurt. Good bacteria allows fully fermented milk thus produce good taste. However, a survey found, yogurt, probiotic dairy drinks and other varieties and brand are very many, and which also contained a number of ferrous lactate. Many consumers said strain indicated on the package have not heard of most of their own, so the choice is difficult to distinguish between what they really want yogurt products. In this regard, industry experts said most of the yogurt contains Lactobacillus acidophilus, Streptococcus thermophilus, Lactobacillus bulgaricus and other species.
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