Complexation between Dodecyl Sulfate Surfactant and Zein Protein in Solution

Abstract

Interactions between sodium dodecyl sulfate and zein protein, a model system for the understanding of the effect of surfactants on skin, were investigated using a range of techniques involving UV-vis spectroscopy, TOC (total organic carbon analysis), electrophoresis, and static and dynamic light scattering. Zein protein was solubilized by SDS. The adsorption of SDS onto insoluble protein fraction caused the zeta potential of the complex to become more negative. From these values, we calculated the Gibbs energy of absorption, which decreases when the SDS concentration is raised. Finally the structure of the complex, based on the analysis by static and dynamic light scattering, is proposed to be rod like.

Effects of layered silicate structure on the mechanical properties and structures of protein‐based bionanocomposites

“…It indicated that the surface of REC in the nanocomposites was covered with PPI molecules, and hence produced the electrostatic interaction on the surface of the REC lamellas. 32,33 At the same time, when the MMT with higher f value than PPI was added, the f value of the MP-P nanocomposites firstly increased until the loading-level of 8 wt %, and then decreased. When the MMT content was higher than 16 wt %, the f values were even lower than that of neat PPI.…”

Significant effect of polar head group of surfactants on the solubilization of Zein in mixed micellar (SDS–DDAB) media

“…Zein is practically insoluble in water even at low concentrations of salt and requires a high percentage of ethanol in aqueous systems to maintain a folded conformation [14]. However, Zein can be dissolved in water by adding different types of surfactants [17,18]. Turro and co-workers [17] found that solubilization of Zein is enhanced in the presence of SDS.…”

“…Turro and co-workers [17] found that solubilization of Zein is enhanced in the presence of SDS. Similarly, in another study on SDS-Zein [18] authors have investigated the cooperative association between SDS and Zein at lower concentration of SDS. The ability of surfactants to dissolve Zein has been correlated to their skin irritation potential.…”

<strong>3D hierarchically scaffolds for bone repair: at the crossroads of experimental and computational outlooks</strong>

“…Nanomedicine goes beyond the use of classical medicine at cell scales, currently faces an exceptional opportunity to improve global healthcare [1,2]. One of the main goals of nanomedicine is to develop new biocompatible scaffolds [3].…”