Studies on surfactant-biopolymer interaction. I. Microcalorimetric investigation on the interaction of cetyltrimethylammonium bromide (CTAB) and sodium dodecylsulfate (SDS) with gelatin (Gn), lysozyme (Lz) and deoxyribonucleic acid (DNA)

被引：118

作者：

Chatterjee, A

Moulik, SP ^{[1
]}

Majhi, R

Sanyal, SK

机构：

[1] Jadavpur Univ, Dept Chem, Ctr Surface Sci, Kolkata 700032, W Bengal, India

[2] Univ Halle Wittenberg, Inst Phys Chem, D-06108 Halle An Der Saale, Germany

[3] Jadavpur Univ, Dept Chem Engn, Kolkata 700032, W Bengal, India

来源：

BIOPHYSICAL CHEMISTRY | 2002年 / 98卷 / 03期

关键词：

sodium dodecyl sulfate; cetyltrimethyl ammonium bromide; gelatin; lysozyme; DNA; microcalorimetry;

D O I：

10.1016/S0301-4622(02)00107-2

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The interaction of the surfactants cetyltrimethyl ammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) with the biopolymers gelatin (Gn), lysozyme (Lz) and deoxyribonucleic acid (DNA) was studied by isothermal titration microcalorimetry at varied biopolymer concentration, pH and temperature. The nature of interaction of the surfactants with the biopolymers was assessed from the observed enthalpy-[surfactant] profiles. The biopolymer-induced aggregation of the surfactants was observed. The enthalpies of aggregation of amphiphiles, binding of aggregates with macromolecules, organisational change of bound aggregates, and threshold concentrations for micelle formation of surfactants in the presence of biopolymers were estimated. The results collected on the three biopolymers were analysed and compared. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：313 / 327

页数：15

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