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lactase

lactase The enzyme that metabolizes lactose. It is present in the stomach of neonatal mammals, but usually ceases to be secreted after weaning, hence milk is indigestible to most mammalian species after this time. In humans, it is a polymorphism: lactase is secreted throughout life in most people of north European and north Indian origin, but its frequency declines towards the tropics and most tropical, East Asian, Australian Aboriginal, Pacific, and Native American peoples cannot digest milk.

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"lactase." A Dictionary of Zoology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"lactase." A Dictionary of Zoology. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lactase

"lactase." A Dictionary of Zoology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lactase

lactase

lactase (β-galactosidase) The enzyme that breaks down the milk sugar, lactose, to glucose and galactose by catalysing the hydrolysis of galactose residues.

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"lactase." A Dictionary of Biology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

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"lactase." A Dictionary of Biology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lactase-0

lactase

lactase (lak-tayz) n. an enzyme, secreted by the glands of the small intestine, that converts lactose (milk sugar) into glucose and galactose during digestion.

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"lactase." A Dictionary of Nursing. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

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"lactase." A Dictionary of Nursing. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/lactase

lactase

lactase The enzyme that hydrolyses lactose to glucose and galactose in the brush border of intestinal mucosal cells. See also disaccharide intolerance.

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"lactase." A Dictionary of Food and Nutrition. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"lactase." A Dictionary of Food and Nutrition. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/lactase

"lactase." A Dictionary of Food and Nutrition. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/lactase

lactase

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"lactase." Oxford Dictionary of Rhymes. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"lactase." Oxford Dictionary of Rhymes. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/lactase

"lactase." Oxford Dictionary of Rhymes. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/lactase