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1日星期日
liquor functional bacteria growth and reproduction
Pit mud is liquor functional bacteria growth and reproduction of the carrier. Pit mud extremely complex microbial flora , microorganisms inhabiting pit mud addition caproic acid bacteria, butyric acid bacteria , there is an impact on the flavor-generating substance , with special features methanogens , methane -oxidizing bacteria ,Zinc lactate bacteria and thermophilic Bacillus and other microorganisms . After years of practice, the old heart of the wine cellar mud artificial culture techniques better, using high-quality Wong ( less sediment , with adhesive ) , pit leather mud ( mud pit closures have been used ) , fresh lees, wheat koji , yellow water quality , quality wine tail, potassium lactate bacteria , Dry Active pit Mud functional Bacteria at 35 ℃ under the conditions of insulation, airtight fermentation 30 days or so you can collate cellar.
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