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Das S, Roy P, Sardar PS, Ghosh S. Addressing the interaction of stem bromelain with different anionic surfactants, below, at and above the critical micelle concentration (cmc) in phosphate buffer at pH 7: Physicochemical, spectroscopic, & molecular docking study. Int J Biol Macromol 2024; 271:132368. [PMID: 38761912 DOI: 10.1016/j.ijbiomac.2024.132368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 05/04/2024] [Accepted: 05/12/2024] [Indexed: 05/20/2024]
Abstract
The structural stability and therapeutic activity of Stem Bromelain (BM) have been explored by unravelling the interaction of stem BM in presence of two different types of anionic surfactants namely, bile salts, NaC and NaDC and the conventional anionic surfactants, SDDS and SDBS, below, at and above the critical micelle concentration (cmc) in aqueous phosphate buffer of pH 7. Different physicochemical parameters like, surface excess (Γcmc), minimum area of surfactants at air water interface (Amin) etc. are calculated from tensiometry both in absence and presence of BM. Several inflection points (C1, C2 and C3) have been found in tensiometry profile of surfactants in presence of BM due to the conformational change of BM assisted by surfactants. Similar observation also found in isothermal titration calorimetry (ITC) profiles where the enthalpy of micellization (ΔH0obs) of surfactants in absence and presence of BM have calculated. Further, steady state absorption and fluorescence spectra monitoring the tryptophan (Trp) emission of free BM and in presence of all the surfactants at three different temperatures (288.15 K, 298.15 K, and 308.15 K) reveal the nature of fluorescence quenching of BM in presence of bile salts/surfactants. Time resolved fluorescence studies at room temperature also support to determine the several quenching parameters. The binding constant (Kb) of BM with all the surfactants and free energy of binding (∆G0 of bile salts/surfactants with BM at different temperatures have been calculated exploiting steady state fluorescence technique. It is observed that, the binding of NaC with BM is greater as compared to other surfactants while Stern-Volmer quenching constant (KSV) is found greater in presence of SDBS as compared with others which supports the surface tension and ITC data with the fact that surface activity of surfactant(s) is decreasing with the binding of the surfactants at the core or binding pocket of BM. Circular Dichroism (CD) study shows the stability of secondary structure of BM in presence of NaC and NaDC below C3, while BM lost its structural stability even at very low surfactant concentration of SDDS and SDBS which also supports the more involvement of bile salts in binding rather than surfactants. The molecular docking studies have also been substantiated for better understanding the several experimental investigations interaction of BM with the bile salts/surfactants.
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Affiliation(s)
- Sourav Das
- Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India; Department of Chemistry, The Bhawanipur Education Society College, Kolkata 700020, India
| | - Pritam Roy
- Laboratory of Molecular Bacteriology (Rega Institute), University: Katholieke Universiteit Leuven (KU Leuven), Herestraat 49, Leuven 3000, Belgium
| | - Pinki Saha Sardar
- Department of Chemistry, The Bhawanipur Education Society College, Kolkata 700020, India.
| | - Soumen Ghosh
- Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
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2
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Nabi A, Jesudason CG, Sabir JSM, Kamli MR. Thermodynamic Insights of the Molecular Interactions of Dopamine (Neurotransmitter) with Anionic Surfactant in Non-Aqueous Media. Pharmaceuticals (Basel) 2023; 16:1187. [PMID: 37764995 PMCID: PMC10537161 DOI: 10.3390/ph16091187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/22/2023] [Accepted: 07/27/2023] [Indexed: 09/29/2023] Open
Abstract
This study was aimed at establishing the interactions prevailing in an anionic surfactant, sodium dodecyl sulfate, and dopamine hydrochloride in an alcoholic (ethanol) media by using volumetric, conductometric, and tensiometric techniques. Various methods were utilized to estimate the critical micelle concentration (cmc) values at different temperatures. The entire methods yielded the same cmc values. The corresponding thermodynamic parameters viz. the standard free energy of micellization (Gmico), enthalpy of micellization (Hmico), and entropy of micellization (Smico) were predicted by applying the pseudo-phase separation model. The experimental density data at different temperatures (298.15 K, 303.15 K, 308.15 K, and 313.15 K) were utilized to estimate the apparent molar volumes (Vϕo) at an infinite dilution, apparent molar volumes (Vφcmc) at the critical micelle concentration, and apparent molar volumes (ΔVφm) upon micellization. Various micellar and interfacial parameters, for example, the surface excess concentration (Γmax), standard Gibbs free energy of adsorption at the interface (ΔGoad), and the minimum surface area per molecule (Amin), were appraised using the surface tension data. The results were used to interpret the intermolecular interactions prevailing in the mixed systems under the specified experimental conditions.
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Affiliation(s)
- Arshid Nabi
- Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | | | - Jamal S. M. Sabir
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Majid Rasool Kamli
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
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Ghasemi M, Jamadagni SN, Johnson ES, Larson RG. A Molecular Thermodynamic Model of Coacervation in Solutions of Polycations and Oppositely Charged Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10335-10351. [PMID: 37469275 DOI: 10.1021/acs.langmuir.3c00359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
To guide the rational design of personal care formulations, we formulate a molecular thermodynamic model that predicts coacervation from cationic polymers and mixed micelles containing neutral and anionic surfactants and added salt. These coacervates, which form as a result of dilution of conditioning shampoos during use, deposit conditioning agents and other actives to the scalp or skin and also provide lubrication benefits. Our model accounts for mixing entropy, hydrophobic interactions of polycation with water, free energies of bindings of oppositely charged groups to micelles and polycations, and electrostatic interactions that capture connectivity of charged groups on the polycation chain and the micelle. The model outputs are the compositions of surfactants, polycation, salt, and water in the coacervate and in its coexisting dilute phase, along with the binding fractions and coacervate volume fraction. We study the effects of overall composition (of surfactant, polycation, and added salt), charge fractions on micelles and polycations, and binding free energies on the phase diagram of coacervates. Then, we perform coacervation experiments for three systems: sodium dodecyl sulfate (SDS)-JR30M, sodium methyl cocoyl taurate (Taurate)-JR30M, and sodium lauryl alaninate (Alaninate)-JR30M, where JR30M is a cationic derivative of hydroxyethylcellulose (cat-HEC), and rationalize their coacervation data using our model. For comparison with experiment, we also develop a parametrization scheme to obtain the requisite binding energies and Flory-Huggins χ parameter. We find that our model predictions agree reasonably well with the experimental data, and that the sulfate-free surfactants of Taurate and Alaninate display much larger 2-phase regions compared to SDS with JR30M.
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Affiliation(s)
- Mohsen Ghasemi
- The Procter & Gamble Company, Mason, Ohio 45040, United States
| | | | - Eric S Johnson
- The Procter & Gamble Company, Mason, Ohio 45040, United States
| | - Ronald G Larson
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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4
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Thermochemical investigation of aqueous solution of Gemini surfactant (12-2-12) and its interactions with pharmacologically important amino acids. MONATSHEFTE FUR CHEMIE 2023. [DOI: 10.1007/s00706-022-03007-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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5
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Rozamliana J, Gurung J, Pulikkal AK. Interaction of metanil yellow dye with cationic surfactants: Conductometric and spectroscopic studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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6
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Abhari P, Abdi S, Nasiri M. Effect of various types of anions and anionic surfactants on the performance of micellar-enhanced ultrafiltration process in the removal of Pb(II) ions: An optimization with the response surface methodology. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Experimental investigation of N-lauroyl sarcosine and N-lauroyl-L-glutamic acid as green surfactants for enhanced oil recovery application. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Synergistic Interaction and Binding Efficiency of Tetracaine Hydrochloride (Anesthetic Drug) with Anionic Surfactants in the Presence of NaCl Solution Using Surface Tension and UV–Visible Spectroscopic Methods. Gels 2022; 8:gels8040234. [PMID: 35448135 PMCID: PMC9025005 DOI: 10.3390/gels8040234] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/02/2022] [Accepted: 04/07/2022] [Indexed: 02/01/2023] Open
Abstract
Surfactants are ubiquitous materials that are used in diverse formulations of various products. For instance, they improve the formulation of gel by improving its wetting and rheological properties. Here, we describe the effects of anionic surfactants on an anesthetic drug, tetracaine hydrochloride (TCH), in NaCl solution with tensiometry and UV–visible techniques. Various micellar, interfacial, and thermodynamic parameters were estimated. The outputs were examined by using different theoretical models to attain a profound knowledge of drug–surfactant mixtures. The presence of attractive interactions among drug and surfactant monomers (synergism) in mixed micelle was inferred. However, it was found that sodium dodecyl sulfate (SDS) showed greater interactions with the drug in comparison to sodium lauryl sarcosine (SLS). The binding of the drug with surfactants was monitored with a spectroscopic technique (UV–visible spectra). The results of this study could help optimize the compositions of these mixed aggregates and find the synergism between monomers of different used amphiphiles.
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Interfacial Properties, Wettability Alteration and Emulsification Properties of an Organic Alkali-Surface Active Ionic Liquid System: Implications for Enhanced Oil Recovery. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072265. [PMID: 35408664 PMCID: PMC9000228 DOI: 10.3390/molecules27072265] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/21/2022] [Accepted: 03/21/2022] [Indexed: 11/23/2022]
Abstract
Combinatory flooding techniques evolved over the years to mitigate various limitations associated with unitary flooding techniques and to enhance their performance as well. This study investigates the potential of a combination of 1-hexadecyl-3-methyl imidazolium bromide (C16mimBr) and monoethanolamine (ETA) as an alkali–surfactant (AS) formulation for enhanced oil recovery. The study is conducted comparative to a conventional combination of cetyltrimethylammonium bromide (CTAB) and sodium metaborate (NaBO2). The study confirmed that C16mimBr and CTAB have similar aggregation behaviors and surface activities. The ETA–C16mimBr system proved to be compatible with brine containing an appreciable concentration of divalent cations. Studies on interfacial properties showed that the ETA–C16mimBr system exhibited an improved IFT reduction capability better than the NaBO2–CTAB system, attaining an ultra-low IFT of 7.6 × 10−3 mN/m. The IFT reduction performance of the ETA–C16mimBr system was improved in the presence of salt, attaining an ultra-low IFT of 2.3 × 10−3 mN/m. The system also maintained an ultra-low IFT even in high salinity conditions of 15 wt% NaCl concentration. Synergism was evident for the ETA–C16mimBr system also in altering the carbonate rock surface, while the wetting power of CTAB was not improved by the addition of NaBO2. Both the ETA–C16mimBr and NaBO2–CTAB systems proved to form stable emulsions even at elevated temperatures. This study, therefore, reveals that a combination of surface-active ionic liquid and organic alkali has excellent potential in enhancing the oil recovery in carbonate reservoirs at high salinity, high-temperature conditions in carbonate formations.
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Vu T, Koenig P, Weaver M, Hutton HD, Kasting GB. Effects of cationic counterions and surfactant on viscosity of an amino acid-based surfactant system. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Savaroğlu G, Ocak E, Hür E. Micellization, acoustic and thermodynamic study of procaine in aqueous solution at different temperatures. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Liu X, Wu K, Song W, Lei Q, Zhang H, Pan J, Ge X. Aqueous solution thickening of amino acid‐based surfactant by alkylpyrrolidone. J SURFACTANTS DETERG 2021. [DOI: 10.1002/jsde.12544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xuemin Liu
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu China
| | - Ke Wu
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu China
| | - Weili Song
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu China
| | - Qiuyun Lei
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu China
| | - Hui Zhang
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu China
| | - Jiajia Pan
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu China
| | - Xin Ge
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu China
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13
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Zhou Y, Huang L, Yang B, He C, Xu B. Contrastive Study of the Foaming Properties of N-Acyl Amino Acid Surfactants with Bovine Serum Albumin and Gelatin. J Oleo Sci 2021; 70:807-816. [PMID: 33967168 DOI: 10.5650/jos.ess20313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A detailed study on the foamability, foam stability, foam liquid-carrying capacity, and foam morphology of two N-acyl amino acid surfactants with bovine serum albumin (BSA) and gelatin were performed by foam scanning. The results showed that the foamability of the mixed system increased gradually and then tended to be stable with increasing surfactant concentration. The foamability of the high-concentration BSA system was stronger than that of the low-concentration BSA system. The foamability and foam stability of sodium N-lauroyl phenylpropanoic acid (N-C12P)/BSA were better than those of sodium N-lauroyl propylamino acid (N-C12A)/BSA, and the foamability and foam stability of N-C12A/gelatin was better than those of N-C12P/gelatin. The liquid-carrying capacity of the foam initially increased and then decreased with increasing time, and the maximum liquid-carrying capacity increased with increasing surfactant concentration. When the concentration of the surfactant was 8 mM, the drainage rate of N-C12A/protein was higher than that of N-C12P/protein. The morphology of the bubble gradually changed from spherical to polyhedron and the number of bubbles gradually decreased with time increasing. Differences in surfactant structure and protein type had an important effect on the number and area of foam.
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Affiliation(s)
- Yawen Zhou
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University
| | - Luyang Huang
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University
| | - Bo Yang
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University
| | - Chengxuan He
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University
| | - Baocai Xu
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University
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14
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Bagheri A. Comparison of the interaction between propranolol hydrochloride (PPL) with anionic surfactant and cationic surface active ionic liquid in micellar phase. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126183] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Afzal S, Lone MS, Maswal M, Dar AA. Modulation of surface tension and rheological behavior of methyl cellulose – Amino acid based surfactant mixture by hydrophobic drug rifampicin: An insight into drug stabilization and pH-responsive release. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114353] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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16
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Garcia MT, Ribosa I, Gonzalez JJ, Comelles F. Catanionic mixtures of surface-active ionic liquids and N-lauroyl sarcosinate: Surface adsorption, aggregation behavior and microbial toxicity. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Experimental investigation of the behaviour of a novel amino acid-based surfactant relevant to EOR application. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113848] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Perinelli D, Cespi M, Lorusso N, Palmieri GF, Bonacucina G, Blasi P. Surfactant Self-Assembling and Critical Micelle Concentration: One Approach Fits All? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5745-5753. [PMID: 32370512 PMCID: PMC8007100 DOI: 10.1021/acs.langmuir.0c00420] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Critical micelle concentration (CMC) is the main chemical-physical parameter to be determined for pure surfactants for their characterization in terms of surface activity and self-assembled aggregation. The CMC values can be calculated from different techniques (e.g., tensiometry, conductivity, fluorescence spectroscopy), able to follow the variation of a physical property with surfactant concentrations. Different mathematical approaches have been applied for the determination of CMC values from the raw experimental data. Most of them are independent of the operator, despite not all of the fitting procedures employed so far can be applied in all techniques. In this experimental work, the second derivative of the experimental data has been proposed as a unique approach to determine the CMC values from different techniques (tensiometry, conductimetry, densimetry, spectrofluorimetry, and high-resolution ultrasound spectroscopy). To this end, the CMC values of five different surfactants, specifically three anionic (sodium dodecyl sulfate, sodium deoxycolate, and N-lauroyl sarcosinate) and two nonionic, such as polyethylene glycol ester surfactants [polyethylenglicol (8) monostearate and polyethylenglicol (8) monolaurate], have been determined by this approach. The "second-derivate" approach provides a reliable determination of the CMC values among all of the techniques investigated, which were comparable to those calculated by the other operator-free routinely methods employed, such as segmental linear regression or Boltzmann regression. This study also highlighted the strengths and shortcomings of each technique over the others, providing an overview of the CMC values of commonly used anionic and nonionic surfactants in the pharmaceutical field, determined by employing different experimental approaches.
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da Silva MA, Calabrese V, Schmitt J, Hossain KMZ, Bryant SJ, Mahmoudi N, Scott JL, Edler KJ. Impact of wormlike micelles on nano and macroscopic structure of TEMPO-oxidized cellulose nanofibril hydrogels. SOFT MATTER 2020; 16:4887-4896. [PMID: 32424387 DOI: 10.1039/d0sm00135j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, we investigated the effect of adding surfactant mixtures on the rheological properties of TEMPO-oxidized cellulose nanofibril (OCNF) saline dispersions. Three surfactant mixtures were studied: cocamidopropyl betaine (CAPB)/sodium dodecyl sulfate (SDS), which forms wormlike micelles (WLMs); cocamidopropylamine oxide (CAPOx)/SDS, which forms long rods; and CAPB/sodium lauroyl sarcosinate (SLS), which forms spherical micelles. The presence of micelles in these surfactant mixtures, independent of their morphology, leads to an increase of tan δ, making the gels less solid-like, therefore acting as a plasticizer. WLMs were able to suppress strain stiffening normally observed in OCNF gels at large strains. OCNF/WLM gels have lower G' values than OCNF gels while the other micellar morphologies have a reduced impact on G'. The presence of unconnected micelles leads to increased dissipative deformation in OCNF gels without affecting the connectivity of the fibrils, while the presence of entangled micelles interferes with the OCNF network.
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Affiliation(s)
- Marcelo A da Silva
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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Thermodynamic insights into molecular interactions of sodium lauryl sulfate (SLS) with caffeine and theophylline in aqueous media at different temperatures. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
:
Micellar chemistry is gaining considerable interest among organic chemists because these
reactions are carried out in environmentally benign solvents like water. Owing to the exhaustive use
of toxic solvents in carrying out the different chemical reactions, there is a pressing need for alternative
approaches either environmental friendly or having minimum impact on the environment. In this
article, we aim to discuss the various aspects of micellar chemistry viz-a-viz its role in guiding the
chemical reactions. Micelles help to drive various kinds of organic reactions including oxidations,
reductions, carbon-carbon bond formation, carbon-heteroatom bond formation, multi-component reactions,
Pd-coupling reaction, olefin metathesis reaction, Morita-Baylis-Hillman reaction, etc. in water.
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Affiliation(s)
- Bilal A. Bhat
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Sanatnagar, Srinagar 190005, India
| | - Bashir A. Shairgojray
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Sanatnagar, Srinagar 190005, India
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23
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Barai M, Mandal MK, Karak A, Bordes R, Patra A, Dalai S, Panda AK. Interfacial and Aggregation Behavior of Dicarboxylic Amino Acid-Based Surfactants in Combination with a Cationic Surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:15306-15314. [PMID: 31689362 DOI: 10.1021/acs.langmuir.9b02895] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The interfacial and micellization behavior of three dicarboxylic amino acid-based anionic surfactants, abbreviated as AAS (N-dodecyl derivative of -aminomalonate, -aspartate, and -glutamate) in combination with hexadecyltrimethylammonium bromide (HTAB) were investigated by surface tension, conductance, UV-vis absorption/emission spectroscopy, dynamic light scattering (DLS), and viscosity studies. Critical micelle concentration (CMC) values of the surfactant mixtures are significantly lower than the predicted values, indicating associative interaction between the components. Surface excess, limiting molecular area, surface pressure at the CMC, and Gibbs free energy indicate spontaneity of the micellization processes compared to the pure components. CMC values were also determined from the sigmoidal variation in the plot of micellar polarity and pyrene UV-vis absorption/emission intensities with surfactant concentration. The aggregation number, determined by static fluorescence quenching method, increases with decreasing mole fraction of the AAS (αAAS), where the micelles are mainly dominated by the HTAB molecules. The size of the micelle increases with decreasing αAAS, leading to the formation of larger and complex aggregates, as also supported by the viscosity studies. Micelles comprising 20-40 mol % AAS are highly viscous, in consonance with their sizes. Some of the mixed surfactant systems show unusual viscosity (shear thickening and increased viscosity with increasing temperature). Such mixed surfactant systems are considered to have potential in gel-based drug delivery and nanoparticle synthesis.
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Affiliation(s)
- Manas Barai
- Department of Chemistry and Chemical Technology , Vidyasagar University , Midnapore 721102 , West Bengal , India
| | - Manas Kumar Mandal
- Department of Chemistry and Chemical Technology , Vidyasagar University , Midnapore 721102 , West Bengal , India
| | - Atanu Karak
- Department of Chemistry and Chemical Technology , Vidyasagar University , Midnapore 721102 , West Bengal , India
| | - Romain Bordes
- Chemistry and Chemical Engineering, Applied Surface Chemistry , Chalmers University of Technology , SE-412 96 Gothenburg , Sweden
| | - Anuttam Patra
- Chemistry of Interfaces Group , Luleå University of Technology , SE-97187 Luleå , Sweden
| | - Sudipta Dalai
- Department of Chemistry and Chemical Technology , Vidyasagar University , Midnapore 721102 , West Bengal , India
| | - Amiya Kumar Panda
- Department of Chemistry and Chemical Technology , Vidyasagar University , Midnapore 721102 , West Bengal , India
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Preisig N, Schad T, Jacomine L, Bordes R, Stubenrauch C. How Promoting and Breaking Intersurfactant H-Bonds Impact Foam Stability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14999-15008. [PMID: 31725301 DOI: 10.1021/acs.langmuir.9b02407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
On the basis of previous results revealing that intersurfactant H-bonds improve foam stability, we now focus on how foams stabilized by two different N-acyl amino acid surfactants are affected by different salts (NaF, NaCl, NaSCN), which can promote or break intersurfactant H-bonds. The chosen surfactants, namely, sodium N-lauroyl sarcosinate (C12SarcNa) and sodium N-lauroyl glycinate (C12GlyNa), differ only by one methyl group at the nitrogen of the amide bond that blocks intersurfactant H-bonds in the case of C12SarcNa. The salts were chosen because they are kosmotropic (NaF), chaotropic (NaSCN), and in between (NaCl) and thus influence the formation of an H-bond network in different ways. Surface tension measurements showed that the addition of salts decreased the cmcs of both surfactants and increased the packing density, as expected. Moreover, in presence of the salts, the head groups of the H-bond forming surfactant C12GlyNa were more tightly packed at the surface than the C12SarcNa head groups. The effect of the salts on foam stability was studied by analysis of the foam height, the foam liquid fraction, and by image analysis of the foam structure. As expected, the salts had no significant effect on foams stabilized by C12SarcNa, which is unable to form intersurfactant H-bonds. In contrast, the stability of C12GlyNa-containing foams followed the trend NaF > NaCl > NaSCN, which is in agreement with NaF promoting and NaSCN breaking intersurfactant H-bonds. Surface rheology measurements allowed us to correlate foam stability with surface elasticity. This study provides new insights into the importance of H-bond promoters and breakers, which should be used in the future design of tailor-made surfactants.
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Affiliation(s)
- Natalie Preisig
- Universität Stuttgart, Institut für Physikalische Chemie , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Tamara Schad
- Universität Stuttgart, Institut für Physikalische Chemie , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Leandro Jacomine
- Institut Charles Sadron , 23 rue du Loess , 67037 Strasbourg , France
| | - Romain Bordes
- Department of Chemistry and Chemical Engineering, Applied Chemistry , Chalmers University of Technology , SE-41296 Göteborg , Sweden
| | - Cosima Stubenrauch
- Universität Stuttgart, Institut für Physikalische Chemie , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
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25
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Effect of Benzheterazoles on the Micellar Behavior of Sodium Dodecylsulfate in Dimethylsulfoxide: A Conductometric and Spectroscopic Approach. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Mondal S, Raposo ML, Ghosh A, Prieto G, Ghosh S. Physicochemical and conformational studies on interaction of myoglobin with an amino-acid based anionic surfactant, sodium N-dodecanoyl sarcosinate (SDDS). Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.05.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Bagheri A, Jafari-Chashmi P. Study of aggregation behavior between N-lauryl sarcosine sodium and Dodecyltrimethylammonium bromide in aqueous solution, using conductometric and spectrophotometric techniques. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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28
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Study on foaming properties of N-acyl amino acid surfactants: Sodium N-acyl glycinate and sodium N-acyl phenylalaninate. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Patra N, Mal A, Dey A, Ghosh S. Influence of solvent, electrolytes, β-CD, OTAB on the krafft temperature and aggregation of sodium tetradecyl sulfate. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.02.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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Mandal B, Ghosh S, Moulik SP. Interaction between a bio-tolerable amino-acid based amphiphile (N-dodecanoylsarcosinate, SDDS) and modified cationic polymers, hydroxyethylcelluloses (JR 400, and LM 200) in isopropanol-water medium. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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31
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Dey J, Ghosh R, Das Mahapatra R. Self-Assembly of Unconventional Low-Molecular-Mass Amphiphiles Containing a PEG Chain. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:848-861. [PMID: 29923405 DOI: 10.1021/acs.langmuir.8b00779] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The design and synthesis of biocompatible surfactants are important for a wide range of applications in cosmetics, personal care products, and nanomedicine. This feature article summarizes our studies over the past 8 years on the design, synthesis, surface activity, and self-assembly of a series of unconventional low-molecular-mass amphiphiles containing a poly(ethylene glycol) (PEG) tail or spacer and different ionic or zwitterionic headgroups, including carboxylate, sulfonate, and quaternary ammonium salts. Despite having a so-called polar PEG chain as a tail or spacer, these ionic amphiphiles are found to have a tendency to adsorb at the air/water interface and self-assemble in pH 7.0 buffers at 298 K in the same way that conventional hydrocarbon tail surfactants do. However, they are observed to be relatively less surface-active compared to hydrocarbon tail surfactants. Although these amphiphilic molecules have less surface activity, they do self-assemble in aqueous buffer at 298 K, producing a range of microstructures, including spherical micelles, disclike micelles, and vesicles. In fact, our group is the first to report the self-assembly of PEG-tailed ionic amphiphiles in water at room temperature. Some of these molecules are also found to gel various organic liquids on heat-cool treatment or by ultrasound irradiation. We think that the present article will arouse general interest among researchers working toward the development of new biocompatible amphiphiles and soft materials.
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Affiliation(s)
- Joykrishna Dey
- Department of Chemistry , Indian Institute of Technology Kharagpur , Kharagpur 721302 , India
| | - Rita Ghosh
- Department of Chemistry , Indian Institute of Technology Kharagpur , Kharagpur 721302 , India
| | - Rita Das Mahapatra
- Department of Chemistry , Indian Institute of Technology Kharagpur , Kharagpur 721302 , India
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32
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Chauhan S, Pathania L. Impact of cationic surfactants on cefepime properties in aqueous medium: Micellization and characterization of microenvironment. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.10.071] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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33
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Bhanja P, Mohanty B, Patra AK, Ghosh S, Jena BK, Bhaumik A. IrO
2
and Pt Doped Mesoporous SnO
2
Nanospheres as Efficient Electrocatalysts for the Facile OER and HER. ChemCatChem 2018. [DOI: 10.1002/cctc.201801312] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Piyali Bhanja
- School of Materials ScienceIndian Association for the Cultivation of Science Jadavpur 700 032 India
| | - Bishnupad Mohanty
- Colloids & Material Chemistry DepartmentCSIR-Institute of Minerals and Materials Technology Bhubaneswar 751013 India
| | - Astam K. Patra
- School of Materials ScienceIndian Association for the Cultivation of Science Jadavpur 700 032 India
| | - Soumen Ghosh
- Department of ChemistryJadavpur University Jadavpur Kolkata 700 032 India
| | - Bikash Kumar Jena
- Colloids & Material Chemistry DepartmentCSIR-Institute of Minerals and Materials Technology Bhubaneswar 751013 India
| | - Asim Bhaumik
- School of Materials ScienceIndian Association for the Cultivation of Science Jadavpur 700 032 India
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34
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Jafari-Chashmi P, Bagheri A. The strong synergistic interaction between surface active ionic liquid and anionic surfactant in the mixed micelle using the spectrophotometric method. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.094] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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35
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Bajani D, Gharai D, Dey J. A comparison of the self-assembly behaviour of sodium N-lauroyl sarcosinate and sodium N-lauroyl glycinate surfactants in aqueous and aqueo-organic media. J Colloid Interface Sci 2018; 529:314-324. [DOI: 10.1016/j.jcis.2018.06.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/08/2018] [Accepted: 06/12/2018] [Indexed: 12/31/2022]
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36
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Patra N, Ray D, Aswal VK, Ghosh S. Exploring Physicochemical Interactions of Different Salts with Sodium N-Dodecanoyl Sarcosinate in Aqueous Solution. ACS OMEGA 2018; 3:9256-9266. [PMID: 31459057 PMCID: PMC6644383 DOI: 10.1021/acsomega.8b00718] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 08/01/2018] [Indexed: 05/27/2023]
Abstract
Amino acid-based surfactants are used in academics and industry. Sodium N-dodecanoyl sarcosinate (SDDS) is such an amino acid-based surfactant having applications in pharmaceutical, food, and cosmetic formulations. Although the surface properties of this surfactant have been studied in the presence of univalent cationic and anionic salts, there is no report on such solution in the presence of higher valencies. In this experiment, critical micelle concentration (CMC) of SDDS from tensiometry, conductometry, and fluorimetry has been determined. In each case, CMC decreases with increasing salt concentration. Counterion binding of micelles (β), diffusion coefficient (D 0), and surface properties, e.g., Gibbs free energy for micellization (ΔG m 0), Gibbs surface excess (Γmax), area of exclusion per surfactant monomer (A min), surface pressure at CMC (πcmc), etc., have been evaluated using methods such as tensiometry, conductometry, and fluorimetry. The hydrodynamic radius of SDDS in the presence of different salts was measured by the light scattering method. Aggregation number and shape of micelle have been determined by small-angle neutron scattering experiment. The nature of amphiphilic packing and the aggregation numbers of the assemblies have also been explored. The results from different experiments have been rationalized and represented systematically.
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Affiliation(s)
- Nitai Patra
- Centre
for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Debes Ray
- Solid
State Physics Division, Bhabha Atomic Research
Centre, Mumbai 400085, India
| | - Vinod Kumar Aswal
- Solid
State Physics Division, Bhabha Atomic Research
Centre, Mumbai 400085, India
| | - Soumen Ghosh
- Centre
for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
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37
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Seweryn A. Interactions between surfactants and the skin - Theory and practice. Adv Colloid Interface Sci 2018; 256:242-255. [PMID: 29685575 DOI: 10.1016/j.cis.2018.04.002] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 04/03/2018] [Accepted: 04/04/2018] [Indexed: 01/14/2023]
Abstract
One of the primary causes of skin irritation is the use of body wash cosmetics and household chemicals, since they are in direct contact with the skin, and they are widely available and frequently used. The main ingredients of products of this type are surfactants, which may have diverse effects on the skin. The skin irritation potential of surfactants is determined by their chemical and physical properties resulting from their structure, and specific interactions with the skin. Surfactants are capable of interacting both with proteins and lipids in the stratum corneum. By penetrating through this layer, surfactants are also able to affect living cells in deeper regions of the skin. Further skin penetration may result in damage to cell membranes and structural components of keratinocytes, releasing proinflammatory mediators. By causing irreversible changes in cell structure, surfactants can often lead to their death. The paper presents a critical review of literature on the effects of surfactants on the skin. Aspects discussed in the paper include the skin irritation potential of surfactants, mechanisms underlying interactions between compounds of this type and the skin which have been proposed over the years, and verified methods of reducing the skin irritation potential of surfactant compounds. Basic research conducted in this field over many years translate into practical applications of surfactants in the cosmetic and household chemical industries. This aspect is also emphasized in the present study.
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38
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Kumar D, Rub MA. Interaction of ninhydrin with chromium-glycylglycine complex in the presence of dimeric gemini surfactants. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.172] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Chauhan S, Kaur M, Singh K, Chauhan M, Kohli P. Micellar and antimicrobial activities of ionic surfactants in aqueous solutions of synthesized tetraalkylammonium based ionic liquids. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.09.042] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Binding interaction of sodium-N-dodecanoyl sarcosinate with hemoglobin and myoglobin: Physicochemical and spectroscopic studies with molecular docking analysis. J Colloid Interface Sci 2017; 496:267-277. [DOI: 10.1016/j.jcis.2017.02.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 02/14/2017] [Accepted: 02/14/2017] [Indexed: 11/22/2022]
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41
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Maurya JK, Khan AB, Dohare N, Ali A, Kumar A, Patel R. Effect of aromatic amino acids on the surface properties of 1-dodecyl-3-(4-(3-dodecylimidazolidin-1-yl)butyl)imidazolidine bromide gemini surfactant. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1306782] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Jitendra Kumar Maurya
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi
| | - Abbul Bashar Khan
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi
| | - Anwar Ali
- Department of Chemistry, Jamia Millia Islamia (A Central University), New Delhi
| | - Amit Kumar
- Centre for Nano and Material Sciences, Jain University, Bangalore, India
| | - Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi
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42
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Joondan N, Jhaumeer-Laulloo S, Caumul P, Akerman M. Synthesis, physicochemical, and biological activities of novel N-acyl tyrosine monomeric and Gemini surfactants in single and SDS/CTAB-mixed micellar system. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3675] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Nausheen Joondan
- Department of Chemistry, Faculty of Science; University of Mauritius; Réduit Mauritius
| | | | - Prakashanand Caumul
- Department of Chemistry, Faculty of Science; University of Mauritius; Réduit Mauritius
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43
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Hąc-Wydro K, Pałasińska I, Miśkowiec P. The comparative studies on the ability of anionic surfactants to bind lead(II) ions. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.02.067] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Vashishat R, Chabba S, Mahajan RK. Effect of surfactant head group on micellization and morphological transitions in drug-Surfactant catanionic mixture: A multi-technique approach. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.03.058] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Chemical–physical properties and cytotoxicity of N -decanoyl amino acid-based surfactants: Effect of polar heads. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.12.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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46
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Mandal B, Ghosh S, Moulik SP. Detailed characterization of lysozyme (Lyz)–surfactant (SDDS) interaction and the structural transitions. NEW J CHEM 2016. [DOI: 10.1039/c5nj01498k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Surfactant interaction can influence the protein structure manifesting molecular unfolding–folding.
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Affiliation(s)
- Bithika Mandal
- Centre for Surface Science
- Department of Chemistry
- Jadavpur University
- Kolkata – 700032
- India
| | - Soumen Ghosh
- Centre for Surface Science
- Department of Chemistry
- Jadavpur University
- Kolkata – 700032
- India
| | - S. P. Moulik
- Centre for Surface Science
- Department of Chemistry
- Jadavpur University
- Kolkata – 700032
- India
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47
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Influence of iso-perthiocyanic acid and temperature on the aggregation properties of sodium dodecylsulphate in dimethylsulphoxide. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.07.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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Chauhan S, Kumar K, Rana DS, Kumar R, Chauhan MS. A Comparative Study on the Aggregation and Thermodynamic Properties of Anionic Sodium Dodecylsulphate and Cationic Cetyltrimethylammonium Bromide in Aqueous Medium: Effect of the Co-solvent N-Methylacetamide. J SURFACTANTS DETERG 2015. [DOI: 10.1007/s11743-015-1748-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Ghosh S, Dey J. Binding of Fatty Acid Amide Amphiphiles to Bovine Serum Albumin: Role of Amide Hydrogen Bonding. J Phys Chem B 2015; 119:7804-15. [PMID: 26023820 DOI: 10.1021/acs.jpcb.5b00965] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The study of protein-surfactant interactions is important because of the widespread use of surfactants in industry, medicine, and pharmaceutical fields. Sodium N-lauroylsarcosinate (SL-Sar) is a widely used surfactant in cosmetics, shampoos. In this paper, we studied the interactions of bovine serum albumin (BSA) with SL-Sar and sodium N-lauroylglycinate (SL-Gly) by use of a number of techniques, including fluorescence and circular dichroism spectroscopy and isothermal titration calorimetry. The binding strength of SL-Sar is stronger than that of structurally similar SL-Gly, which differs only by the absence of a methyl group in the amide nitrogen atom. Also, these two surfactants exhibit different binding patterns with the BSA protein. The role of the amide bond and hence the surfactant headgroup in the binding mechanism is discussed in this paper. It was observed that while SL-Sar destabilized, SL-Gly stabilized the protein structure, even at concentrations less than the critical micelle concentration (cmc) value. The thermodynamics of surfactant binding to BSA was studied by use of ITC. From the ITC results, it is concluded that three molecules of SL-Sar in contrast to only one molecule of SL-Gly bind to BSA in one set of binding sites at room temperature. However, on increasing temperature four molecules of SL-Gly bind to the BSA through H-bonding and van der Waals interactions, due to loosening of the BSA structure. In contrast, with SL-Sar the binding process is enthalpy driven, and very little structural change of BSA was observed at higher temperature.
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Affiliation(s)
- Subhajit Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721 302, India
| | - Joykrishna Dey
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721 302, India
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50
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Khan AB, Ali M, Dohare N, Singh P, Patel R. Micellization behavior of the amphiphilic drug promethazine hydrochloride with 1-decyl-3-methylimidazolium chloride and its thermodynamic characteristics. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.07.021] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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