Cooperativity in the binding of sodium dodecyl sulfate to amylose.
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概要
- 論文の詳細を見る
The binding isotherm of sodium dodecyl sulfate to amylose was potentiometrically investigated by using amyloses of various degrees of polymerization from 32 to 1100. From the Scatchard plots, the binding was found to be cooperative for the amyloses of DP≥76 and Langmuir type for those of DP≤57. By analogous experiments using a series of sodium alkyl sulfates, it was clarified that (1) eight carbon atoms of surfactant are required for the complexation and (2) more than twelve carbon atoms of surfactant are required for the cooperative binding. Thus, the amylose has an interrupted helical structure in solution and the cooperativity arises from the hydrophobic interaction between the surfactants included partly in the helic of amylose.
- 公益社団法人 日本化学会の論文
著者
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Yamamoto Masako
Department Of Anatomy Ii Azabu University School Of Veterinary Medicine
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Harada Shoji
Department Mechanical Engineering Kyushu Institute Of Technology
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Yasunaga Tatsuya
Department of Chemistry, Faculty of Science, Hiroshima University
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Sano Takayuki
Department of Chemistry, Faculty of Science, Hiroshima University
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