D-Galactose is a monosaccharide sugar that serves as an energy source and glycosylation component. It is a C-4 epimer of glucose and often used as a source of carbon in culture media. Galactose is a component of the disaccharide lactose and released upon hydrolysis by β-galactosidase enzymes.

Why is D-galactose important?

Because galactose is a precursor to glucose production, it is an important energy-providing nutrient. … Galactose serves as a substrate for cerebrosides, gangliosides and mucoproteins in the brain and nervous system, which supports its neural and immunological role [2,3,6,7].

Is D-galactose a reducing sugar?

Galactose is classified as a monosaccharide, an aldose, a hexose, and is a reducing sugar.