| slovo | definícia |
Lactin
(gcide) | Lactin \Lac"tin\, n. [L. lac, lactis, milk: cf. F. lactine. Cf.
Galactin.] (Physiol. Chem.)
See Lactose.
[1913 Webster] |
lactin
(gcide) | lactose \lac"tose`\ (l[a^]k"t[=o]s`), n.
1. (Physiol. Chem.) The main sugar present in milk, called
also sugar of milk or milk sugar. When isolated pure
it is obtained crystalline; it is separable from the whey
by evaporation and crystallization. It is a disaccharide
with the formula C12H22O11, being chemically
4-([beta]-D-galactosido)-D-glucose. It has a slightly
sweet taste, is dextrorotary, and is much less soluble in
water than either cane sugar or glucose. Formerly called
lactin. When hydrolyzed it yields glucose and galactose.
In cells it may be hydrolyzed by the enzyme
[beta]-galactosidase.
[1913 Webster +PJC]
2. (Chem.) See Galactose.
[1913 Webster] |
| | podobné slovo | definícia |
prolactin
(encz) | prolactin,druh hormonu Zdeněk Brožprolactin,prolaktin n: Zdeněk Brož |
Galactin
(gcide) | Galactin \Ga*lac"tin\, n. [Gr. ?, ?, milk. Cf. Lactin.]
(Chem.)
(a) An amorphous, gelatinous substance containing
nitrogen, found in milk and other animal fluids. It
resembles peptone, and is variously regarded as a
coagulating or emulsifying agent.
(b) A white waxy substance found in the sap of the South
American cow tree (Galactodendron).
(c) An amorphous, gummy carbohydrate resembling gelose,
found in the seeds of leguminous plants, and yielding
on decomposition several sugars, including galactose.
[1913 Webster] |
Lactin
(gcide) | Lactin \Lac"tin\, n. [L. lac, lactis, milk: cf. F. lactine. Cf.
Galactin.] (Physiol. Chem.)
See Lactose.
[1913 Webster]lactose \lac"tose`\ (l[a^]k"t[=o]s`), n.
1. (Physiol. Chem.) The main sugar present in milk, called
also sugar of milk or milk sugar. When isolated pure
it is obtained crystalline; it is separable from the whey
by evaporation and crystallization. It is a disaccharide
with the formula C12H22O11, being chemically
4-([beta]-D-galactosido)-D-glucose. It has a slightly
sweet taste, is dextrorotary, and is much less soluble in
water than either cane sugar or glucose. Formerly called
lactin. When hydrolyzed it yields glucose and galactose.
In cells it may be hydrolyzed by the enzyme
[beta]-galactosidase.
[1913 Webster +PJC]
2. (Chem.) See Galactose.
[1913 Webster] |
prolactin
(wn) | prolactin
n 1: gonadotropic hormone secreted by the anterior pituitary; in
females it stimulates growth of the mammary glands and
lactation after parturition [syn: prolactin, {lactogenic
hormone}, luteotropin] |
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