galactose /ga·lac·tose/ (gah-lak´tōs) a six-carbon aldose epimeric with glucose but less sweet, occurring naturally in both d- and l- forms (the latter in plants). It is a component of lactose and other oligosaccharides, cerebrosides and gangliosides, and glycolipids and glycoproteins.
Galactose
galactose
galactose [gah-lak´tōs]
galactose (g
lak´tōs),
ga·lac·tose (g -l k t s )n. A monosaccharide commonly occurring in lactose. Also called brain sugar. |
Galactose
One of the two simple sugars, together with glucose, that makes up the protein, lactose, found in milk. Galactose can be toxic in high levels.
Mentioned in: Galactosemia, Lactose Intolerance
galactose
[gəlak′tōs]
Etymology: Gk, gala + glykys, sweet
a simple sugar found in the dextrorotatory form in lactose (milk sugar), nerve cell membranes, sugar beets, gums, and seaweed and in the levorotatory form in flaxseed mucilage. Prepared galactose, a white crystalline substance, is less sweet and less soluble in water than glucose but is similar in other properties.
galactose [gah-lak´tōs]
a monosaccharide sugar of the aldose group, derived from lactose. d-galactose is found in lactose, in cerebrosides of the brain, in the sugar beet, and in many gums and seaweeds; l-galactose is found in flaxseed mucilage.
galactose tolerance test a laboratory test done to determine the liver's ability to convert the sugar galactose into glycogen. Two methods may be used. The oral method requires about 5 hours to complete, and the intravenous method, which is more accurate, requires about 2 hours. With the oral method, elimination of more than 3 g of galactose in the urine during a 5-hour period indicates liver damage. With the intravenous method, all galactose should have been eliminated from the blood 45 minutes after its injection.
galactose (g
lak´tōs),n a simple sugar found in the dextrorotatory form in lactose (milk sugar), nerve cell membranes, sugar beets, gums, seaweed, and, in the levorotatory form, in flaxseed mucilage. Galactose, a white crystalline substance, is less sweet and less soluble in water than glucose but is similar in other properties.
galactose
a monosaccharide derived from lactose. d-galactose is found in lactose, cerebrosides of the brain, raffinose of the sugar beet, and in many gums and seaweeds; l-galactose is found in flaxseed mucilage.
galactose 1-phosphate uridylyl transferase
involved in the metabolism of galactose to glycogen. Congenital galactosemia of humans and macropods is associated with a deficiency of this enzyme.
galactose tolerance test
a laboratory test done to determine the liver's ability to convert the sugar galactose into glycogen. Not much used in animals.
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