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17日星期二
food nutrition fortifier
Expected relaxation of these additives, food nutrition fortifier , already in 2008, the National Standardization Technical Calcium lactate on Food Additives Food Additives WHO meeting on the sixth through the audit , the public consultation will further improve the relevant standards. It is reported that expand the scope and use of food additives include propylene glycol fatty acid ester , riboflavin , sodium pyrophosphate , sodium metabisulfite , sodium polyacrylate , sodium hexametaphosphate , calcium hydrogen phosphate , maltitol , calcium lactate and other 14 kinds . Among them,buffered lactic acid fatty acid ester as an emulsifier for all types of cakes , the maximum amount of 3 g / kg food ; sodium pyrophosphate as a water retention agent for frozen rice products and rice ( including dumpling powder ) , the maximum use amount of 1 g / kg of food ; sodium polyacrylate thickener can be used as raw dried pasta ( noodles ) , the maximum amount of 2 g / kg food ; hexametaphosphate as water retention agents, emulsifiers, acidity regulator agents can be used in ice cream category , flavor ice and popsicles foods , the maximum usage is 2 g / kg food .
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