D-galactose, which people don't know much about, is white or almost white powder, odorless or slightly sweet, and can be dissolved in pyridine and water, as well as alcohol and glycerol. It is a monosaccharide consisting of 6 carbons and an aldehyde, classified as hexose and aldose, in which D-galactose is naturally present, especially in milk, contains this substance, lactose in milk is broken down into glucose and galactose is absorbed by the body.

It is plant gum, AGAR, viscose, raffinose and other important components of sugar, free state can be found in milk, and glucose together to form lactose, through nitric acid oxidation, and can form mucous acid. D-galactose provides energy for the body, which is formed by the action of lactose in lactic acid bacteria. It also facilitates the absorption of calcium, which is important for neural development in humans and animals. In addition, lactose also has some important effects on the organizational state of dairy products, especially D-galactose crystallization has an impact on taste, it can promote the growth and development of children, strong body, promote absorption. However, children within one year of stomach weakness, there may be lactose intolerance, this need to pay attention to, to timely supplement probiotics.

D-galactose is a monosaccharide in the plant kingdom in the form of polysaccharide and plant gum, free galactose exists in the ivy jam. It is a kind of mammalian milk in a disaccharide, in the food industry, has a wide range of applications, can make baby food and condensed milk products, in the pharmaceutical industry, can be used for pharmaceutical flavoring agent and excipient, can also be used as a bacterial medium.