… In a chemical sense, cellulose is a polysaccharide (polymer of sugars) that is insoluble in water, acid, and alkali and consists of anhydroglucose units β-linked by the 1st and 4th carbons, of sufficient molecular weight to give a characteristic X-ray diffraction pattern, as shown in Figure 1. Pure cellulose is called α-cellulose, to distinguish it from β-cellulose and γ-cellulose. α-cellulose becomes insoluble when dissolved in 17.5% sodium hydroxide and then diluted to 8% sodium hydroxide. … *Some of the terminology that mentions "γ-cellulose" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 化学的意味では,セルロースは水や酸,アルカリに不溶で,図1に示すように,1位の炭素と4位の炭素によってβ‐結合された無水グルコース単位から成り,特有のX線回折図を与える十分な分子量の多糖(糖のポリマー)である。純粋なセルロースはα‐セルロースと呼ばれ,β‐セルロースとγ‐セルロースとは区別される。α‐セルロースは17.5%水酸化ナトリウムに溶解後希釈して8%水酸化ナトリウムにすると不溶化する。… ※「γ-セルロース」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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