Solubilization of Hydrophobic Dyes in Surfactant Solutions

Tehrani‐Bagha, Ali Reza; Holmberg, Krister

doi:10.3390/ma6020580

Cited by 234 publications

(130 citation statements)

References 97 publications

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“…[40][41][42][43][44][45] Apart from bulk water, micelles are treated as a separate phase. Thus, small (polar) guest molecules will distribute between both the aqueous and the micellar pseudo-phase.…”

Section: Acs Paragon Plus Environmentmentioning

confidence: 99%

Nile Red Dye in Aqueous Surfactant and Micellar Solution

et al. 2015

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The solubilization behavior of nile red dye in aqueous surfactant and micellar solutions was studied by optical spectroscopic techniques, dynamic light scattering, and atomic force microscopy. Nile red exhibits considerable absorption in the submicellar concentration region. When dispersed in aqueous surfactant and/or micellar solution, nile red molecules tend to form nonemissive dimers and/or H-type aggregates through π-π stacking interactions. This phenomenon may limit the use of nile red in solubilization studies. In the presence of ionic SDS and CTAB micelles, the solubilization of nile red appears to take place primarily at the charged micellar surface within the interfacial region. Similarly, spectra in micellar solution of nonionic Triton X-100 revealed that nile red dye penetrates the hydrophilic, interfacial poly(oxyethylene) region of the micelles but cannot reach the hydrophobic, innermost core. Our results therefore suggest that nile red dye must be chosen carefully when probing (micellar) hydrophobic environments and (micro)domains.

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Section: Acs Paragon Plus Environmentmentioning

confidence: 99%

Nile Red Dye in Aqueous Surfactant and Micellar Solution

et al. 2015

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“…Tensioactive agents or surfactants could facilitate enzymes release or substrates diffusion by increasing membrane permeability and/or increasing dyes solubility in aqueous media (Gül and Dönmez 2012;Hadibarata et al 2013;Tehrani-Bagha and Holmberg 2013). Moreover, as described in many researches, surfactants could promote decolorizing enzyme activities (Champagne et al 2010;Zhang et al 2012).…”

Section: Introductionmentioning

confidence: 96%

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Mnif

Maktouf

Fendri

et al. 2015

Environ Sci Pollut Res

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Aeromonas veronii GRI (KF964486), isolated from acclimated textile effluent after selective enrichment on azo dye, was assessed for methyl orange biodegradation potency. Results suggested the potential of this bacterium for use in effective treatment of azo-dye-contaminated wastewaters under static conditions at neutral and alkaline pH value, characteristic of typical textile effluents. The strain could tolerate higher doses of dyes as it was able to decolorize up to 1000 mg/l. When used as microbial surfactant to enhance methyl orange biodecolorization, Bacillus subtilis SPB1-derived lipopeptide accelerated the decolorization rate and maximized slightly the decolorization efficiency at an optimal concentration of about 0.025%. In order to enhance the process efficiency, a Taguchi design was conducted. Phytotoxicity bioassay using sesame and radish seeds were carried out to assess the biotreatment effectiveness. The bacterium was able to effectively decolorize the azo dye when inoculated with an initial optical density of about 0.5 with 0.25% sucrose, 0.125% yeast extract, 0.01% SPB1 biosurfactant, and when conducting an agitation phase of about 24 h after static incubation. Germination potency showed an increase toward the nonoptimized conditions indicating an improvement of the biotreatment. When comparing with synthetic surfactants, a drastic decrease and an inhibition of orange methyl decolorization were observed in the presence of CTAB and SDS. The nonionic surfactant Tween 80 had a positive effect on methyl orange biodecolorization. Also, studies ensured that methyl orange removal by this strain could be due to endocellular enzymatic activities. To conclude, the addition of SPB1 bioemulsifier reduced energy costs by reducing effective decolorization period, biosurfactant stimulated bacterial decolorization method may provide highly efficient, inexpensive, and time-saving procedure in treatment of textile effluents.

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“…plant oils, lanolin or oils of mineral origin (15)(16)(17)(18). Other additives which are popular with HDL users are hydrophobic active substances derived from plants.…”

Section: Introductionmentioning

confidence: 99%

Supercritical carbon dioxide blackcurrant seed extract as an anti-irritant additive for hand dishwashing liquids

Wasilewski

Seweryn

Bujak

2016

Green Chemistry Letters and Reviews

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The study investigated the effect of hydrophobic, blackcurrant seed extract (Ribes nigrum L.) obtained under supercritical CO 2 conditions on the anti-irritant properties of hand dishwashing liquids. A range of liquids differing in extract concentration (0-0.5 wt%) were prepared. The product prototypes were subjected to tests focusing on their anti-irritating property and functionality. Based on the zein values and measurements of changes in the pH level of the bovine albumin solution, the liquids were shown to be markedly safer to use. It was noted that an increase in extract concentration in a product leads to a deterioration of detergent and foaming properties. The highest concentration of the extract allowing the achievement of acceptable results was 0.3 wt%. The results suggest that hydrophobic plant extract, for example, from blackcurrant seed can be an interesting raw material for reducing the irritating potential of liquid agents designed for hand dishwashing. ARTICLE HISTORY

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Solubilization of Hydrophobic Dyes in Surfactant Solutions

Cited by 234 publications

References 97 publications

Nile Red Dye in Aqueous Surfactant and Micellar Solution

Nile Red Dye in Aqueous Surfactant and Micellar Solution

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Supercritical carbon dioxide blackcurrant seed extract as an anti-irritant additive for hand dishwashing liquids

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