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lactose
The Columbia Encyclopedia, Sixth Edition | Date: 2008
lactose or milk sugar, white crystalline disaccharide (see carbohydrate ). It has the same empirical formula (C 12 H 22 O 11 ) as sucrose (cane sugar) and maltose but differs from both in structure (see isomer ). It yields the simple sugars D-glucose and D-galactose on hydrolysis , which is catalyzed by lactase, an enzyme found in gastric juice. People who lack this enzyme after childhood cannot digest milk and are said to be lactose intolerant. Lactose is formed in the mammary glands of all lactating animals and is present in their milk. It is produced commercially as a byproduct of milk processing. When milk sours, the lactose in it is converted by bacteria to lactic acid. Lactose is less sweet-tasting than sucrose and is not found in plants.
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The Columbia Encyclopedia, Sixth Edition 2008
The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press
Related newspaper, magazine, and journal articles from HighBeam Research
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Lactose: The Milk Sugar from a Biotechnological Perspective
Critical Reviews in Food Science and Nutrition; 10/1/2004; Adam, Ana C; Rubio-Texeira, Marta; Polaina, Julio; 4005 words
; Lactose is a very important sugar because of its abundance in the milk of humans and domestic animals. Lactose is a valuable asset as a basic nutrient and the main substrate in fermentative processes that led to the production of fermented milk products, such as yogurt and kefir. In some instances,
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Lactose leaps into non-food markets. (non-food uses of lactose)
Dairy Foods; 4/1/1991; Newton, Stephen; 1010 words
; What does a dairy processors do with leftover lactose? Practically all lactose that is not discarded flows into food and animal feed, according to the American Dairy Products Institute (ADPI). In 1989, total domestic lactose production totaled 170.9 million pounds, ADPI says. Human food uses
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Reducing lactose.
Dairy Foods; 11/1/1995; Gorski, Donna; 1118 words
; ... lactose-intolerant consumers not eliminate them. One reason people blame cramps and gas on dairy products is because of the pervasiveness of news stories about lactose intolerance and extensive advertising for products to counteract the problem, says the study's author Dr ...
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Investigate new uses for lactose.
Emerging Food R&D Report; 1/1/2002; 416 words
; As you know, lactose is a disaccharide and is the sugar naturally present in milk. During the manufacture of cheese, yogurt or other milk products, the water contained in milk must be removed in order to thicken the product. This concentration may be done in different ways, but it always represents
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I can no longer eat just what I want at meals How having a lactose intolerance can rule out hundreds of foods from cake to cottage pie in the pub
Birmingham Mail; 11/21/2006; Diane Parkes; 810 words
; THERE is nothing Barbara Allbutt would like more than a cheese sandwich - but just that one lunch could cause her untold problems because she is lactose intolerant. A more common problem than many realise, there are thousands of people in the UK who cannot eat produce that contain lactose such as
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 "Birmingham Mail (England)")
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I can no longer eat just what I want at meals; How having a lactose intolerance can rule out hundreds of foods from cake to cottage pie in the pub.(News)
Birmingham Mail (England); 11/21/2006; 837 words
; Byline: By Diane Parkes THERE is nothing Barbara Allbutt would like more than a cheese sandwich - but just that one lunch could cause her untold problems because she is lactose intolerant. A more common problem than many realise, there are thousands of people in the UK who cannot eat produce that
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Living With Lactose Intolerance
Philadelphia Tribune, The; 1/11/2005; 355 words
; Philadelphia Tribune, The 01-11-2005 Half the Hispanics in this country, along with most other people of color and a large number of European Americans, share something surprising. They're all lactose intolerant to some degree. Lactose is the pre-dominant sugar in milk. When people consume more
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Colonic Fermentation May Play a Role in Lactose Intolerance in Humans1
The Journal of Nutrition; 1/1/2006; He, Tao; Priebe, Marion G; Harmsen, Hermie J M; Stellaard, Frans; Et al; 5402 words
; ABSTRACT The results of our previous study suggested that in addition to the small intestinal lactase activity and transit time, colonic processing of lactose may play a role in lactose intolerance. We investigated whether colonic fermentation of lactose is correlated with lactose intolerance.
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Can lactose-intolerant patients use lactose-containing medications?
Drug Topics; 1/28/2008; Nathan, Joseph P; Schilit, Sara; Rosenberg, Jack M; 710 words
; Submitted on Nov. 19, 2007 Q Over the past several months, the International Drug Information Center of the Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, N. Y, has received a number of inquiries concerning intolerabilities to certain
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Lactose Intolerance?
Pediatrics for Parents; 6/1/2001; Meyerhoff, Michael K.; 300 words
; ... they come close to the lactose content of milk. Dr. Saviano believes that most people with lactose intolerance can consume lactose-containing foods, but they have to exercise some caution and follow his recommendations. Family Practice News, 3/15/01
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Related entries from encyclopedias, dictionaries, and thesauruses
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Lactose Intolerance
Gale Encyclopedia of Children's Health: Infancy through Adolescence
... follow severe dietary restrictions. Foods that contain lactose include milk, low-fat milk, skim milk, chocolate ... and butter. Other foods that may contain hidden lactose are: nondairy creamers, powdered artificial sweeteners ... puddings, custards, confections, and some meat products. Lactose is also used ...
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lactose
Britannica Concise Encyclopedia
... glucose and galactose , linked together. Lactose-intolerant adults, and more rarely infants, cannot digest lactose because they lack the enzyme (lactase ... bloating when they eat foods containing it. Lactose, which makes up 2–8% of the milk ...
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milk, lactose-hydrolysed
A Dictionary of Food and Nutrition
milk, lactose-hydrolysed Milk in which the lactose has been hydrolysed to glucose and galactose by treatment with the enzyme lactase, intended for infants who are lactase-deficient (lactose intolerant). See also disaccharide intolerance .
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lactose intolerance
A Dictionary of Food and Nutrition
lactose intolerance See disaccharide intolerance .
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Carbohydrate Intolerance
Gale Encyclopedia of Children's Health: Infancy through Adolescence
... Diagnosis The doctor may recommend a lactose-free diet for two or three weeks to ... causing the symptoms. During the lactose-free period, the child should avoid ... result in milk that is 90 percent lactose free. Chewable lactase enzyme tablets ...
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