| 释义 |
pentosan Biochem.|ˈpɛntəʊsæn|
Also † -ane.
[a. G. pentosan (Schulze & Tollens 1892, in Ann. d. Chem. CCLXIX. 55), after glucosan, hexosan, etc.: see pentose.]
Any of the class of polysaccharides, occurring widely in plants, of which the constituent monosaccharides are pentoses.
1892Jrnl. Chem. Soc. LXII. 1420 (heading) The pentosans of woody vegetable fibre. 1913Haas & Hill Introd. Chem. Plant Products ii. 51 Gums: (a) Natural gums and pentosanes (C5H8O4)n. (b) Mucilages and pectic bodies. 1931E. C. Miller Plant Physiol. viii. 420 The pentosans have the general formula (C5H8O4)n and occur, for the most part, in the cell walls of various plant parts. 1938[see araban]. 1963R. R. A. Higham Handbk. Papermaking ii. 34 The presence of pentosans in wood pulps helps to produce increased fibre bonding in paper. 1973R. W. Bailey in Butler & Bailey Chem. & Biochem. Herbage I. iv. 165 Hemicelluloses may be divided into two broad classes; pentosans, based largely on pentoses and non-cellulose hexosans which are pentose-free. |