A new facile methylation method for cell-wall polysaccharides

✍ Scribed by Akira Isogai; Atsushi Ishizu; Junzo Nakano; Shigeru Eda; Kunio Katō

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 615 KB
• Volume: 138
• Category: Article
• ISSN: 0008-6215
• DOI: 10.1016/0008-6215(85)85227-7

✦ Synopsis

A new methylation method involving powdered sodium hydroxide and methyl iodide has been developed for the facile methylation of cell-wall polysaccharides. Commercial cellulose powder, wood cellulose, and unbleached kraft pulp in solution in SO,-diethylamine-methyl sulfoxide could be completely methylated. Suspensions of holocelluloses, prepared from spruce and beech wood-meals and containing 4% of lignin, and cell-wall polysaccharides containing relatively large amounts of uranic acid and isolated from midrib of Nicotiana rubacum (CWM), were almost completely methylated in one step. Some decarboxylation occurred with the latter polymers.