Rapid determination of surfactant critical micelle concentrations using pressure-driven flow with capillary electrophoresis instrumentation

Stanley, Floyd E.; Warner, Andrew M.; Schneiderman, Eva; Stalcup, Apryll M.

doi:10.1016/j.chroma.2009.09.026

Cited by 32 publications

(19 citation statements)

References 22 publications

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“…Table 1 shows comparative CMC and 14 minimum ST data of the four BSs analysed. The CMC values of the BSs were significantly lower in comparison with chemical surfactants such as sodium carpylate which has a CMC value of 1805 mg/L (Stanley et al, 2009). The surface tension of water is 72.75 mN/m (at 20°C) and good BSs can reduce surface tension of water to 35 mN/m, (Manivasgan et al, 2014).…”

Section: Critical Micelle Concentration and Surface Tensionmentioning

confidence: 99%

Systematic comparison of the functional physico-chemical characteristics and biocidal activity of microbial derived biosurfactants on blood-derived and breast cancer cells

Akiyode

George

Getti

et al. 2016

Journal of Colloid and Interface Science

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HEK 293 cell-line had the highest growth rate amongst the three cell lines. For TB assay, growth of HEK 293>THP-1 and for MTT, HEK 293>MCF-7 while the DT was in the order of THP-1>MCF-7>HEK 293. Sophorolipid showed anti-proliferative activity comparable to doxorubicin on THP-1>MCF-7>HEK 293. THP-1 showed high sensitivity to sophorolipid with IC50 of 10.50, 25.58 and 6.78(μg/ml) after 24, 48 and 72h respectively. However, sophorolipid was cytotoxic from 24 to 72h on HEK 293 cell lines with IC50 of 21.53, 40.57 and 27.53μg/ml respectively. Although, doxorubicin showed higher anti-proliferative activity than all biosurfactants, it had poorer selectivity index for the same time durations compared to the biosurfactants. This indicates that biosurfactants were more effective for slowing the growth of the tested cancer cell lines and hence may be potential candidates for use in human cancer therapy. Physico-chemical characteristics of the biosurfactants suggest that their mechanism of action may be due to activity on the cell membrane.

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Section: Critical Micelle Concentration and Surface Tensionmentioning

confidence: 99%

Systematic comparison of the functional physico-chemical characteristics and biocidal activity of microbial derived biosurfactants on blood-derived and breast cancer cells

Akiyode

George

Getti

et al. 2016

Journal of Colloid and Interface Science

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show abstract

“…Recently, Stanley et al reported a fast (~4 min) method for the determination of CMC values that uses CE instrumentation to monitor relative viscosity changes [235]. Similarly, a CE instrument was used to measure viscosity, conductivity and absorbance of pure ionic liquids and ionic liquid–molecular solvent mixtures using minimum sample volumes (~50 μL) [236].…”

Section: - Innovative Uses and Modifications Of Classic Ce Instrumenmentioning

confidence: 99%

Recent developments in instrumentation for capillary electrophoresis and microchip‐capillary electrophoresis

2010

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Over the last years there has been an explosion in the number of developments and applications of capillary electrophoresis (CE) and microchip-CE. In part, this growth has been the direct consequence of recent developments in instrumentation associated with CE. This review, which is focused on contributions published in the last five years, is intended to complement the papers presented in this special issue dedicated to Instrumentation and to provide an overview on the general trend and some of the most remarkable developments published in the areas of high voltage power supplies, detectors, auxiliary components, and compact systems. It also includes few examples of alternative uses of and modifications to traditional CE instruments.

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“…Therefore many methods can be used for CMC determination, e.g. spectrophotometry, electrochemistry, or CE including MEKC [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Rapid determination of the critical micelle concentration by Taylor dispersion analysis in capillaries using both direct and indirect detection

Petr

2017

J. Sep. Sci.

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The critical micelle concentration is a basic characteristic of surfactants. In this article, the process of formation of micelles is studied by Taylor dispersion analysis using capillary electrophoresis instrumentation as a substituent of capillary liquid chromatography. New methods for determination of critical micelle concentration are presented. Sodium octylbenzene sulfonate and sodium dodecylsulfate are used as model compounds with and without chromophore. Two novel approaches based on indirect ultraviolet detection and indirect Taylor dispersion analysis with direct ultraviolet detection are introduced for the determination of critical micelle concentration value of surfactant without any chromophore. The determined critical micelle concentration values are in correspondence with the tabulated values at 95% confidence level.

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Rapid determination of surfactant critical micelle concentrations using pressure-driven flow with capillary electrophoresis instrumentation

Cited by 32 publications

References 22 publications

Systematic comparison of the functional physico-chemical characteristics and biocidal activity of microbial derived biosurfactants on blood-derived and breast cancer cells

Systematic comparison of the functional physico-chemical characteristics and biocidal activity of microbial derived biosurfactants on blood-derived and breast cancer cells

Recent developments in instrumentation for capillary electrophoresis and microchip‐capillary electrophoresis

Rapid determination of the critical micelle concentration by Taylor dispersion analysis in capillaries using both direct and indirect detection

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