mannann.

Brit.

/ˈmanan/,

/ˈmanən/, U.S.

/ˈmænæn/,

/ˈmænən/

Origin: Formed within English, by derivation. Etymons: mannose n., -an suffix.

Etymology: < mann- (in mannose n.) + -an suffix, after glucosan n.

Biochemistry.

Any of a group of polysaccharides that are composed chiefly of mannose residues and occur in many yeasts (as components of the cell wall) and in certain plants (esp. as reserve foods).

ΘΚΠ

the world > matter > chemistry > organic chemistry > carbohydrates > sugars > polysaccharides > [noun] > having mannose residues as constituents

mannan1895

galactomannan1897

1895 Jrnl. Chem. Soc. 68 ii. 128 (heading) Mannan as a reserve material in the seeds of Diospyros Kaki.

1931 E. C. Miller Plant Physiol. viii. 412 The hexosans may be further classified..into the dextrosans.., the levulosans.., the mannans, and the galactans.

1965 New Scientist 6 May 381/1 The cell-walls of the [coffee] bean consist of a mannan which is an insoluble polysaccharide..and protein.

1988 Q. N. Myrvik & R. S. Weiser Fund. Med. Bacteriol. & Mycol. (ed. 2) xxxvi. 501 The basic units of fungal cell walls are certain high MW polysaccharides, such as chitin and mannan.

This entry has been updated (OED Third Edition, September 2000; most recently modified version published online March 2022).

单词	mannan
释义	mannann. Brit. /ˈmanan/, /ˈmanən/, U.S. /ˈmænæn/, /ˈmænən/ Origin: Formed within English, by derivation. Etymons: mannose n., -an suffix. Etymology: < mann- (in mannose n.) + -an suffix, after glucosan n. Biochemistry. Any of a group of polysaccharides that are composed chiefly of mannose residues and occur in many yeasts (as components of the cell wall) and in certain plants (esp. as reserve foods). ΘΚΠ the world > matter > chemistry > organic chemistry > carbohydrates > sugars > polysaccharides > [noun] > having mannose residues as constituents mannan1895 galactomannan1897 1895 Jrnl. Chem. Soc. 68 ii. 128 (heading) Mannan as a reserve material in the seeds of Diospyros Kaki. 1931 E. C. Miller Plant Physiol. viii. 412 The hexosans may be further classified..into the dextrosans.., the levulosans.., the mannans, and the galactans. 1965 New Scientist 6 May 381/1 The cell-walls of the [coffee] bean consist of a mannan which is an insoluble polysaccharide..and protein. 1988 Q. N. Myrvik & R. S. Weiser Fund. Med. Bacteriol. & Mycol. (ed. 2) xxxvi. 501 The basic units of fungal cell walls are certain high MW polysaccharides, such as chitin and mannan. This entry has been updated (OED Third Edition, September 2000; most recently modified version published online March 2022). < n.1895
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