英语词汇“galactan”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

galactan

释义

galactan Chem.|gəˈlæktæn|
[a. G. galactan (C. Scheibler 1882, in Neue Zeitschr. f. Rübenzucker-Industrie VIII. 277/1), adapted from galactin (f. Gr. γαλακτ-, γάλα milk) to conform with G. dextran dextran.]
Any of a group of polysaccharides that yield galactose on hydrolysis and occur in many plants, esp. algæ, lichens, mosses, and conifers, and a few animals.
1886Jrnl. Chem. Soc. L. 609 This carbohydrate [from the seed of Lupinus luteus] very closely resembles galactin (or adopting Scheibler's nomenclature galactan), obtained by Muntz from the seed of the lucerne.1912C. A. Browne Handbk. Sugar Analysis xix. 599 In the galactans d-galactose shows the same tendency to form combinations with other sugars..; there are arabogalactans, xylogalactans, mannogalactans, glucogalactans and other combinations.1963Florkin & Stotz Comprehensive Biochem. V. vii. 222 Galactans of animal origin are rare. The snail Helix pomatia and a few other cold-blooded animals produce a highly branched levorotatory galactan containing d-galactose and a lesser amount of l-galactose.

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