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lactase - translation to french

MAMMALIAN PROTEIN FOUND IN HOMO SAPIENS

Lactaid; EC 3.2.1.108; Lactose galactohydrolase; Lactase enzyme; Lactase supplements; Lactase supplement

lactase

n. lactase, enzyme found in the intestinal juices of mammals and in certain yeasts and is able to hydrolize lactose into glucose and galactose (Chemistry)

Definition

lactase

['lakte?z]

¦ noun Biochemistry an enzyme which converts lactose to glucose and galactose.

Origin

C19: from lactose + -ase.

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Wikipedia

Lactase

Lactase is an enzyme produced by many organisms. It is located in the brush border of the small intestine of humans and other mammals. Lactase is essential to the complete digestion of whole milk; it breaks down lactose, a sugar which gives milk its sweetness. People who have deficiency of lactase, and consume dairy products, may experience the symptoms of lactose intolerance. Lactase can be purchased as a food supplement, and is added to milk to produce "lactose-free" milk products.

Lactase (also known as lactase-phlorizin hydrolase, or LPH), a part of the β-galactosidase family of enzymes, is a glycoside hydrolase involved in the hydrolysis of the disaccharide lactose into constituent galactose and glucose monomers. Lactase is present predominantly along the brush border membrane of the differentiated enterocytes lining the villi of the small intestine. In humans, lactase is encoded by the LCT gene on chromosome 2.

https://en.wikipedia.org/wiki/Lactase

Examples of use of lactase

1. La déficience en lactase est un phénom';ne génétique normal chez la majorité des humains.

2. A la naissance, la sécrétion de lactase est maximale, puis elle baisse dans l‘enfance et devient faible chez l‘adulte.

3. Une indisposition causée par la baisse ou l‘absence dans l‘organisme d‘une enzyme, la lactase, qui permet cette digestion.» Rien ŕ voir, cependant, avec une allergie: «Il n‘y en pas au lactose.

4. L‘importance du lait Pour les chercheurs américains comme pour Alicia Sanchez–Mazas, professeure de génétique des populations et directrice du Département d‘anthropologie et d‘écologie de l‘Université de Gen';ve, l‘apparition de l‘agriculture dans plusieurs endroits du globe il y a environ 11000 ans (période du Néolithique) est cruciale. «Un excellent exemple d‘adaptation génétique lié ŕ l‘agriculture est celui de l‘apparition de la lactase, un g';ne permettant de digérer le lait.