An Acidic Polysaccharide Isolated from the Midrib of Leaves of Nicotiana tabacum
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概要
- 論文の詳細を見る
An acidic polysaccharide (APS-H) purified from the hemicellulosic fraction of the midrib of Nicotiana tabacum was composed of D-galacturonic acid, L-rhamnose, L-arabinose and D-galactose in a molar ratio of 31.8:15.4:9.9:42.9. Its molecular weight was estimated to be 90, 000 by gel filtration chromatography. APS-H had a pectin-like structure in which the rhamnogalacturonan backbone was composed of (1→2)-linked L-rhamnopyranosyl and (1→4)-linked D-galacturonosyl residues in a ratio of approximately 1:2.1. It also contained (1→4)-linked D-galactan and (1→5)-linked L-arabinofuranosyl moieties as the side chains. Branch points occurred mainly at C-4 of (1→2)-linked L-rhamnosyl residues in the backbone and at C-6 of (l→4)-linked D-galactosyl residues in the side chains.
- 社団法人 日本農芸化学会の論文
著者
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NAKANO Junzo
Department of Forest Products, The University of Tokyo
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Eda Shigeru
Central Research Institute Nippon Tabacco Co. Ltd.
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Kato Kunio
Central Research Institute The Japan Tobacco & Salt Public Corporation
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ISHIZU Atushi
Department of Forest Products, The University of Tokyo
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