Lactose is a special carbohydrate in human and mammal milk. It is a disaccharide composed of glucose and galactose. Its molecular formula is C12H22O11.
Lactose not only provides energy during infant development, but also participates in brain development.
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Description
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Appearance
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White or Almost White Crystalline Powder
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Solubility
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Freely but slowly soluble in water, practically insoluble
in ethanol (96%).
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Lactose Content (As anhydrous)
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Residue on Ignition
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Heavy Metals
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Clarify and Color of Solution
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Optical Rotation
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+54.4°~+55.9 (Dry basis,at 20ºC)
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Add 0.3ml of phenolphthalein TS: the solution is colorless, and not more than 0.4 ml of 0.1 N sodium hydroxide is required to
produce a pink ro red color.
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Loss on Drying
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Water
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Protein and Light-absorbing Impurities
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210-220nm:≤0.25
270-300nm:≤0.07
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TAMC
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Molds and Yeasts
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<50cfu/g
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Escherichia Coli
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Absent in 10g
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pH
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4.0-7.0
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Boundary particle size
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Over 200 mesh > 80%
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Lactose is mainly used to make baby food.
In addition to providing energy to the body, lactose has physiological significance different from other sugars. Lactose in the human stomach is not digested and absorbed, but direct to the intestine. Lactose is easily broken down into glucose and galactose by lactase in the human intestine for absorption. Galactose is a glycolipid component of brain and nerve tissue, which is very important for the intellectual development of infants. It can promote the production of cerebral glycosides and mucopolysaccharides.
Lactose can promote the formation of some lactic acid bacteria in the human intestine, inhibit the growth of putrefying bacteria, and contribute to intestinal peristalsis. Lactose is often fortified in baby foods because lactic acid helps absorb calcium and other substances that prevent rickets.
1.Spraying a natamycin solution of 300mg/L in ethanol on the cake can protect it from the mold growth and extend its shelf life.
2.Dipping the sausage in 300mg/L natamycin aqueous suspension can prevent it from mold growth and slime or sticky surface development.
3.Adding 5-10mg/L natamycin in wine,fruit and vegetable juices can prevent them from spoilage and extend their shelf life.
4.Spraying natamycin suspension of 300mg/L in water on the surface of cheese can prevent the cheese from mold growth and extend its shelf life.
