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从鱿鱼顶骨β-甲壳素合成的丙酰化甲壳素的结晶结构
Authors
吴玉松
宓锦校
+3 more
王勉
董炎明
阮永红
Publication date
18 November 2001
Publisher
Abstract
分别从α 甲壳素 (来源于蟹壳 )和 β 甲壳素 (来源于鱿鱼顶骨 )制备丙酰化甲壳素。丙酰化β 甲壳素的大角X光衍射图出现 2 0个衍射峰 ,而丙酰化α 甲壳素只在 2 0°左右出现弥散峰。发现丙酰化β 甲壳素的结晶属三斜晶系 ,a =7.997,b =1 3.0 67,c =6.31 6(任意单位 ) ,α =98°5 6′ ,β =1 0 4°1 9′,γ =82°2 6′。列表说明了各衍射峰的归属。据分析 ,每个单元晶胞内含一根分子链的 2 .5个葡萄糖残基单元。分子轴为b
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Last time updated on 16/06/2016