| LC control no. | sh 85076945 |
|---|---|
| LC classification | QK898.L5 Botanical chemistry TS933.L5 Wood chemistry |
| Topical heading | Lignin |
| Variant(s) | Lignins |
| See also | Crosslinked polymers Plant polymers Wood--Chemistry |
| Found in | Smook, G.A. Handbook of pulp & paper terminology, c1990: p. 44 (lignin: Natural binding constituent of the cells of wood and plant stalks, a complex three-dimensional polymer of phenylpropane or propylbenzene structure. The chemistry of lignin is characterized by having hydroxyl or methoxyl groups attached to the benzene carbon atoms.) Concise encyc. biochemistry, 1988 (Lignin: a polymer responsible for the thickening and strengthening of plant cell walls. Chemically, lignin cannot be exactly defined; a highly cross linked, macromolecular, branched polymer, formed irreversibly by dehydrogenation and condensation) MeSH browser, July 26, 2006 (Lignin. Scope note: The most abundant natural aromatic organic polymer found in all vascular plants. Lignin together with cellulose and hemicellulose are the major cell wall components of the fibers of all wood and grass species. Lignin is composed of coniferyl, p-coumaryl, and sinapyl alcohols in varying ratios in different plant species.) Lignin Institute home page, July 26, 2006: what is lignin? (Lignins are derived from an abundant and renewable resource: trees, plants, and agricultural crops; commercial lignin is currently produced as a co-product of the paper industry, separated from trees by a chemical pulping process; because lignins are very complex natural polymers with many random couplings, the exact chemical structure is not known) |
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