Helical amylose complexes with organic complexands, 1. Microcalorimetric and circular dichroitic investigations
Helical amylose complexes with organic complexands, 1. Microcalorimetric and circular dichroitic investigations
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螺旋直链淀粉与有机络合物的络合物，1.微量热和圆二色性研究
DOI：
10.1002/macp.1992.021930504
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发表时间：
1992
影响因子：
2.5
通讯作者：
S. Kubik
中科院分区：
文献类型：
--
作者：
G. Wulff;S. Kubik
用微量热法和圆二色谱法研究了不同合成直链淀粉（Pn在9 ~ 1000之间）与十二烷基硫酸钠和4-叔丁基苯酚的络合作用。并与α-、β-和γ-环糊精与相同客体分子的络合行为进行了比较。所有研究的直链淀粉与十二烷基硫酸钠在快速反应中形成复合物。在这些复合物中，直链淀粉具有每转六个葡萄糖单元的螺旋构象，其在复合之前应该已经存在于水溶液中。叔丁基苯酚仅与Pn高于100的直链淀粉形成复合物。在这种情况下，显然直链淀粉必须进行调整，以使叔丁基苯酚与每圈7或8个葡萄糖单元形成螺旋复合物。使用这些方法的十二烷基硫酸钠与支链淀粉的络合作用也被证明。
Complexation of different synthetic amyloses (Pn between 9 and 1000) with sodium dodecyl sulfate and 4-tert-butylphenol was investigated by means of microcalorimetry and circular dichroism. The results were compared with the complexation behaviour of α-, β and γ-cyclodextrins with the same guest molecules. All amyloses investigated formed complexes with sodium dodecyl sulfate in a fast reaction. In these complexes the amyloses possess a helical conformation with six glucose units per turn, which should already exist in aqueous solution before complexation. tert-Butylphenol only forms complexes with amyloses of a Pn higher than 100. In this case apparently the amylose must adjust to complex the tert-butylphenol in a helix with seven or eight glucose units per turn. Using these methods the complexation of sodium dodecyl sulfate with amylopectin was also demonstrated.