…These are collectively called dextrins. Among them, those with a molecular weight of about 10,000 are called amylodextrins, those with a molecular weight of about 7,000 are called erythrodextrins, and those with a molecular weight of about 4,000 are called acrodextrins, and their colors when reacted with iodine are blue-blue, reddish brown, and light brown, respectively. When starch is hydrolyzed with β-amylase, the decomposition stops at the branch points (1,6-glucoside bond points) of the starch molecule, and an undecomposed product with a molecular weight of about 150,000 remains. … *Some of the terminology that mentions "acrodextrin" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これらを総称してデキストリンという。そのうち,分子量1万程度のものをアミロデキストリン,分子量7000程度のものをエリスロデキストリン,分子量4000程度のものをアクロデキストリンと呼び,ヨード反応による呈色はそれぞれ青藍色,赤褐色,淡褐色である。デンプンをβ‐アミラーゼで加水分解すると,デンプン分子の分枝点(1,6‐グルコシド結合点)で分解が止まってしまい,分子量15万程度の未分解物が残る。… ※「アクロデキストリン」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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