lactose


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to lactose: lactose intolerance

lactose

 [lak´tōs]
a sugar derived from the milk of mammals, which on hydrolysis yields glucose and galactose; used as a tablet and capsule diluent, a powder bulking agent, and as a component of infant feeding formulas. Many persons are intolerant to lactose as a result of hereditary deficiency of lactase.

lac·tose

(lak'tōs),
A reducing disaccharide present in mammalian milk and consisting of a galactosyl residue linked B1,4 to a glucopyranose; obtained from cow's milk and used in modified milk preparation, in food for infants and convalescents, and in pharmaceutical preparations; in large doses, acts as an osmotic diuretic and as a laxative. Human milk contains 6.7% lactose.

lactose

/lac·tose/ (lak´tōs) a disaccharide occurring in mammalian milk, which on hydrolysis yields glucose and galactose; used as a tablet and capsule diluent, a powder bulking agent, and as a component of infant feeding formulas.

lactose

(lăk′tōs′)
n.
A white crystalline disaccharide, C12H22O11, found in milk, that may be hydrolyzed to yield glucose and galactose. Refined lactose obtained from whey is used in infant foods, bakery products, confections, and pharmaceuticals as a diluent and excipient. Also called milk sugar.

lactose

[lak′tos]
Etymology: L, lac + Gk, glykys, sweet
a disaccharide found in the milk of all mammals. On hydrolysis, lactose yields the monosaccharides glucose and galactose. Lactose is used as a laxative, a diuretic, and a component of formulas for infants. Also called lactin, milk sugar. See also lactase deficiency, lactose intolerance, sugar.

lactose

A reducing disaccharide that is hydrolysed by beta-galactosidase into d-galactose and d-glucose; it is synthesised by mammalian mammaries, and causes intolerance to milk products that occurs in some adults.

lac·tose

(lak'tōs)
A disaccharide present in cow's milk and used in food for infants and convalescents and in pharmaceutical preparations; large doses act as an osmotic diuretic and as a laxative.
Synonym(s): milk sugar.

lactose

The main sugar in milk. It is broken down by the digestive enzyme lactase (beta-galactosidase) to galactose and glucose.
Lactoseclick for a larger image
Fig. 203 Lactose . The condensation reaction between galactose and glucose.

lactose

or

milk sugar

a DISACCHARIDE carbohydrate found in the milk of mammals. Lactose is produced by a CONDENSATION REACTION between galactose and glucose. See Fig. 203 .

The sugar can be broken into its component monosaccharides by LACTASE. Souring of milk is due to the conversion of lactose to LACTIC ACID by microorganisms present in the milk.

Lactose

A sugar found in milk and milk products. Some people are lactose intolerant, meaning they have trouble digesting lactose. Lactose intolerance can produce symptoms resembling those of IBS.

lactose

a disaccharide of glucose and galactose; the major sugar in human and bovine milk (milk sugar). The least sweet of disaccharides, lactose can be artificially processed and is often present in carbohydrate-rich, high-calorie drinks. Broken down to glucose and galactose in the small intestine by the action of the enzyme lactase. In some individuals who have lactase deficiency, ingestion leads to accumulation of gas and fluid in the large intestine, with pain and diarrhoea.

lactose,

n sugar extracted from milk, often used as a dilutent in the creation of homeopathic remedies and in nonmedicated tablets.

lac·tose

(lak'tōs)
A disaccharide present in cow's milk and used in food for infants and convalescents and in pharmaceutical preparations.
Synonym(s): milk sugar.

lactose,

n a disaccharide found in the milk of all mammals. Lactose is used as a component of formulas for infants; it is also used as a laxative and a diuretic.
lactose intolerance,
n an inability to digest the lactose in milk and milk products.

lactose

a sugar derived from milk, which on hydrolysis yields glucose and galactose.

lactose digestion test
oral test of foal's ability to digest milk sugar.
lactose intolerance
inability to digest lactose in the diet because of the lack of the enzyme lactase in the small intestine. Clinical consequences are intestinal discomfort and diarrhea.
lactose tolerance test
a monitor of intestinal epithelial damage, similar to the starch digestion test. The test measures the rise in blood glucose at timed intervals after oral administration of lactose; essentially a test of disaccharidase efficiency of the gut.

Patient discussion about lactose

Q. can you be lactose intolerant just in the morning? if i drink milk or eat a dairy product in the morning i get nausous, vomit and have diarehha. but i eat dairy products in the evening and im fine. is it possible to be lactose intolerant just in the morning?

A. Not that I'm aware of.. You are either lactose intolerant or you're not. However, it depends on how much dairy products you eat, and perhaps you consume more dairy products in the morning, on an empty stomach, where it all absorbs, where as in the evening you might eat less and combine it with other food. I would suggest you dicrease the total amount of dairy you eat, in order to get rid of these symptms.

Q. lactose intolerant If you are lactose intolerant and you consume a dairy related product can it cause a fever?

A. No
Lactose Intolerance means you lack the enzyme to digest milk.
You get diarrhea NOT fever
DrMDK

Q. I am lactose intolerant. Can I have any other dairy food?

A. If you are lactose intolerant then you must avoid all lactose containing foods like milk, yoghurt & cheese. You can consume these dairy products If your intolerance is less or else you can have cultured yoghurt and lactobacillus milk as a better dairy option.

More discussions about lactose
References in periodicals archive ?
Many people mistakenly ascribe symptoms of a variety of intestinal disorders, including irritable bowel syndrome, to lactose intolerance and avoid lactose-containing foods without undergoing testing.
Sometimes parents perceive themselves as being lactose intolerant when they're not and then impose that condition on their child without any testing," said Dr.
While lactose is a natural sugar found in milk, one in seven people in the UK find it difficult to digest.
However, if you have a milk allergy, rather than lactose intolerance, avoid all milk products, including those made with sheep and goats' milk.
5 billion pounds of surplus lactose not used for whey products.
Often - more than half the people with lactose intolerance suffer from: chronic tiredness, muscle pain, joint pain (with or without swelling and stiffness)
Milk and lactose intakes and ovarian cancer risk in the Swedish Mammography Cohort.
That means your body can't completely break down lactose, a type of sugar found in milk because you don't produce enough of the enzyme lactase.
1) (He made it by doctoring regular milk with lactase, an enzyme that breaks lactose into its component sugars--glucose and galactose.
A second lactose plant began production, nearly doubling lactose capacity, while allowing even more room for future projects.
Calculate the average percentage of fat, protein, lactose, and water for the mammals in the above chart.
Lactose is a sugar found naturally in milk and other dairy products.