Dye-Surfactant Solution of Coomassie Brilliant Blue G250 and Tween 20: Micellar and Interaction Parametric Studies

Abstract

<jats:p>Coomassie brilliant blue G250 (CBBG250) is used in textile, printing, and biotechnology applications. Fluorescence probe, UV-Vis spectrophotometric, and electrical conductivity methods were used to study the interactions between CBBG250 and the surfactant Tween 20 in aqueous solution. The fluorescence intensity ratio of pyrene (<jats:italic>I</jats:italic><jats:sub>3</jats:sub>/<jats:italic>I</jats:italic><jats:sub>1</jats:sub>) in the mixed system showed that <jats:italic>I</jats:italic><jats:sub>3</jats:sub>/<jats:italic>I</jats:italic><jats:sub>1</jats:sub> increased significantly when the concentration of Tween 20 was greater than the critical micelle concentration (<jats:italic>cmc</jats:italic>, 5.25 × 10<jats:sup>–5</jats:sup> <jats:italic>mol/L</jats:italic>). The micropolarity of the association system decreased as the concentration of CBBG250 in the solution increased. All results show that an interaction between CBBG250 and Tween 20 existed. Thermodynamic parameters were then determined, showing that the association was a spontaneous process that was driven by both enthalpy and entropy.</jats:p>

Medium-chain triglycerides and conjugated linolenic acids in functional yogurts: impact of GIT and potential biological activities

“…This can lead to the introduction of errors in the presence of high concentrations of the tween, thus giving false readings. [23][24][25] Despite this, the protein values were similar to those published by other authors. 26,27 Concerning the sugars, no significant differences ( p > 0.05) between the control and yogurts with the oil in free from.…”

“…This can lead to the introduction of errors in the presence of high concentrations of the tween, thus giving false readings. 23–25…”

Study on preparation and structure of chrysanthemum‐shaped micron calcium carbonate based on inverse microemulsion

“…The inverse microemulsion is a water-in-oil dispersion system mainly composed of oil, aqueous, co-surfactants, and surfactants. Due to the special properties of surfactants [20][21][22][23][24][25][26], they can help to form nano-scale microreactors in microemulsion [27]. As an emerging preparation method, it has many advantages, such as the equipment and preparation process are simple, the size of the nanoparticles can be controlled by adjusting the size of the reactor.…”