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单词 trehalose
释义

Trehalose


Trehalose

 

a carbohydrate of the group of nonreducing di-saccharides. In natural trehalose, two D-glucose radicals are united by an α, α-glycoside bond.

Trehalose was first isolated from ergot; it is also contained in algae, yeasts, higher fungi, lichens, some higher plants, and the hemolymph of a number of works and insects. A rich source of trehalose is the exudate of the ash tree (Trehala manna), which is secreted as a result of an insect sting. Tubercle bacilli have been found to contain two derivatives of trehalose: the highly toxic cord factor, in which trehalose is bonded to two molecules of a higher fatty acid, and phosphoglucan, in which trehalose radicals are joined in to a linear chain by a phosphodiether bond. Biosynthesis of trehalose phosphate occurs with the participation of uridine diphosphate glucose.

trehalose


tre·ha·lose

(trē'hă-lōs), A nonreducing disaccharide, (α-d-glucosido)-α-d-glucoside, contained in trehala; also found in fungi, such as Amanita muscaria; elevated in people with a trehalase deficiency. Synonym(s): mycose

trehalose

(trĭ-hä′lōs′, -lōz′)n. A sweet-tasting, crystalline disaccharide, C12H22O11, found in trehala, in the hemolymph of numerous insects, and in many fungi.

tre·ha·lose

(trē-hā'lōs) A natural disaccharide occurring in some plants and in trehala, a mannalike Asian food consisting of beetle larvae; a food additive and sweetener. [trehala, fr. Turk. tigala, + -ose]

trehalose

(tre-ha'los) A disaccharide containing two linked glucose molecules. It is less sweet than sucrose, but can be used as a source of glucose. Synonym: mycose
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