51
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Paprocki D, Madej A, Koszelewski D, Brodzka A, Ostaszewski R. Multicomponent Reactions Accelerated by Aqueous Micelles. Front Chem 2018; 6:502. [PMID: 30406083 PMCID: PMC6204348 DOI: 10.3389/fchem.2018.00502] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/02/2018] [Indexed: 11/20/2022] Open
Abstract
Multicomponent reactions are powerful synthetic tools for the efficient creation of complex organic molecules in an one-pot one-step fashion. Moreover, the amount of solvents and energy needed for separation and purification of intermediates is significantly reduced what is beneficial from the green chemistry issues point of view. This review highlights the development of multicomponent reactions conducted using aqueous micelles systems during the last two decades.
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Affiliation(s)
- Daniel Paprocki
- Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Arleta Madej
- Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | | | - Anna Brodzka
- Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland
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52
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Haddou B, Benkhedja H, Teixeira Da Silva De La Salles K, Canselier JP, Gourdon C. Prediction of the cloud point of polyethoxylated surfactants and their mixtures by the thermodynamic model of Flory-Huggins-Rupert. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1485577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Boumediene Haddou
- U. S. T. Oran, Faculté de Chimie, Département de Génie Chimique, Laboratoire de Physico-Chimie des Matériaux, Environnement et Catalyse, Oran, M’Nouar, Algeria
- Laboratoire de Génie Chimique UMR CNRS 5503, Université de Toulouse, BP84234, Toulouse, France
| | - Houaria Benkhedja
- U. S. T. Oran, Faculté de Chimie, Département de Génie Chimique, Laboratoire de Physico-Chimie des Matériaux, Environnement et Catalyse, Oran, M’Nouar, Algeria
- Laboratoire de Génie Chimique UMR CNRS 5503, Université de Toulouse, BP84234, Toulouse, France
| | - Katia Teixeira Da Silva De La Salles
- Laboratoire de Génie Chimique UMR CNRS 5503, Université de Toulouse, BP84234, Toulouse, France
- Departamento de Tecnologia Química, Campus Universitário do Bacanga Centro de Ciências Exatas e Tecnologia, São Luís, Brazil
| | - Jean Paul Canselier
- Laboratoire de Génie Chimique UMR CNRS 5503, Université de Toulouse, BP84234, Toulouse, France
| | - Christophe Gourdon
- Laboratoire de Génie Chimique UMR CNRS 5503, Université de Toulouse, BP84234, Toulouse, France
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53
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Hyphenating Supramolecular Solvents and Liquid Chromatography: Tips for Efficient Extraction and Reliable Determination of Organics. Chromatographia 2018. [DOI: 10.1007/s10337-018-3614-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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54
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55
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Racheva R, Rahlf AF, Wenzel D, Müller C, Kerner M, Luinstra GA, Smirnova I. Aqueous food-grade and cosmetic-grade surfactant systems for the continuous countercurrent cloud point extraction. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.03.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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56
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Arkhipov VP, Arkhipov RV, Idiyatullin ZS. Efficiency and Kinetics of Extracting Phenol from Aqueous Solutions Using Nonionic Surfactants. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418080046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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57
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Alesso M, Almeida CA, Talio MC, Fernández LP. Metsulfuron-methyl determination in environmental samples by solid surface fluorescence. Microchem J 2018. [DOI: 10.1016/j.microc.2018.02.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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58
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Zhao W, Wang H, Wang Y. Coacervation of dynamic covalent surfactants with polyacrylamides: properties and applications. SOFT MATTER 2018; 14:4178-4184. [PMID: 29740650 DOI: 10.1039/c8sm00773j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dynamic covalent surfactants have been prepared from a mixture of 4-formyl-N,N,N-trimethylbenzenaminium iodide (FBA) with heptylamine (C7A) or octylamine (C8A) in alkaline aqueous solutions. The reversible pH-dependent nature of the imine bond is characterized by 1H NMR and fluorescence analysis. The dynamic covalent surfactants self-assemble into micelles under alkaline conditions and exhibit coacervation with 10% hydrolyzed polyacrylamide (PAM) over a wide concentration range. The coacervate phase with a network structure was found to effectively extract the anionic dye Conge Red (CR). When the solution is adjusted to acidity, the imine bond is hydrolyzed, leading to the transition of the coacervates into a homogeneous and clear solution, and the precipitation of CR into purple-black solids due to the protonation of sulfonic groups. Thus, the extraction and release of CR molecules are realized with this dynamic covalent surfactant/PAM system. Moreover the initial components, FBA, amine, and PAM, can be easily regenerated with hydrochloric acid. This method shows potential applications in wastewater treatment.
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Affiliation(s)
- Weiwei Zhao
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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59
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Manganese Preconcentration and Speciation in Bioaccessible Fraction of Enteral Nutrition Formulas by Cloud Point Extraction (CPE) and Atomic Absorption Spectroscopy. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1268-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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60
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Koolivand A, Clayton S, Rion H, Oloumi A, O'Brien A, Khaledi MG. Fluoroalcohol – Induced coacervates for selective enrichment and extraction of hydrophobic proteins. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1083:180-188. [DOI: 10.1016/j.jchromb.2018.03.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 02/28/2018] [Accepted: 03/02/2018] [Indexed: 01/13/2023]
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61
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Naqvi AZ, Kabir-Ud-Din. Clouding phenomenon in amphiphilic systems: A review of five decades. Colloids Surf B Biointerfaces 2018; 165:325-344. [PMID: 29547842 DOI: 10.1016/j.colsurfb.2018.01.060] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 01/26/2018] [Accepted: 01/29/2018] [Indexed: 11/26/2022]
Abstract
Phase separation in amphiphilic systems is an important phenomenon. The temperature at which an amphiphilic solution phase separates is known as Cloud Point (CP). This article reviews in detail the process of phase separation in various amphiphiles (surfactants, polymers and drugs) and effect of different classes of additives on the CP of these amphiphilic systems. Ions affect the CP of drugs in a different way: kosmotropes and hard bases decrease while chaotropes and soft bases increase the CP of nonionic and cationic surfactants. Anionic surfactants show CP in presence of quaternary salts only. Thus, depending upon the nature and concentration of additive, the CP of an amphiphilic system gets increased or decreased and, hence, properties of the system may be tuned as per the need and use. A system with CP at high concentration can be made to phase separate at lower concentration by simply introducing an appropriate additive in it. This makes the system cost effective. On the other hand, if not required, a low CP can be enhanced with the help of another type of a suitable additive.
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Affiliation(s)
- Andleeb Z Naqvi
- Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India.
| | - Kabir-Ud-Din
- Department of Chemistry, Faculty of Natural Sciences, Arba Minch University, Arba Minch, Ethiopia
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62
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Kori S, Parmar A, Goyal J, Sharma S. Cloud point extraction coupled with microwave-assisted back-extraction (CPE-MABE) for determination of Eszopiclone (Z-drug) using UV–Visible, HPLC and mass spectroscopic (MS) techniques: Spiked and in vivo analysis. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1074-1075:129-138. [DOI: 10.1016/j.jchromb.2018.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 11/28/2017] [Accepted: 01/04/2018] [Indexed: 10/18/2022]
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63
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Koneva AS, Ritter E, Anufrikov YA, Lezov AA, Klestova AO, Smirnova NA, Safonova EA, Smirnova I. Mixed aqueous solutions of nonionic surfactants Brij 35/Triton X-100: Micellar properties, solutes' partitioning from micellar liquid chromatography and modelling with COSMOmic. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.044] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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64
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Ritter E, Smirnova I. Continuous Countercurrent Extractive Biocatalysis in Aqueous Surfactant Two-Phase Systems. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201700054] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Eric Ritter
- Hamburg University of Technology; Institute of Thermal Separation Processes; Eissendorfer Straße 38 21073 Hamburg Germany
| | - Irina Smirnova
- Hamburg University of Technology; Institute of Thermal Separation Processes; Eissendorfer Straße 38 21073 Hamburg Germany
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65
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Leite AC, Ferreira AM, Morais ES, Khan I, Freire MG, Coutinho JAP. Cloud point extraction of chlorophylls from spinach leaves using aqueous solutions of non-ionic surfactants. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2018; 6:590-599. [PMID: 30271686 PMCID: PMC6161820 DOI: 10.1021/acssuschemeng.7b02931] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Chlorophylls and their derivatives are currently used in a wide range of applications. To replace the volatile organic solvents commonly applied for their extraction from biomass, aqueous solutions of non-ionic surfactants are studied herein in the extraction of chlorophylls from spinach leaves. Aqueous solutions of several surfactants were screened, demonstrating that their hydrophilic-lipophilic balance (HLB) plays the pivotal role on the extraction performance, with the best results obtained for surfactants with a HLB ranging between 10 and 13. A response surface methodology (RSM) was then used to optimize operational conditions (surfactant concentration, solid-liquid ratio and temperature), leading to a maximum extraction yield of chlorophylls of 0.94 mg/g. After the extraction step, the chlorophylls-rich extract was concentrated by heating above the surfactant-water cloud point, leading to the separation into two-phases, and to a concentration factor of 9 and a recovery of 97% of chlorophylls in the surfactant-rich phase. The antioxidant activity of the extracts was finally appraised, showing that the antioxidant activity of the aqueous chlorophylls-rich extracts is higher than that obtained with volatile organic solvents. The obtained results show the potential of aqueous solutions of non-ionic surfactants to extract highly hydrophobic compounds from biomass and their possible direct use in cosmetic and nutraceutical applications, without requiring an additional recovery or purification step.
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Affiliation(s)
- Ana Cláudia Leite
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ana M. Ferreira
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Eduarda S. Morais
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Imran Khan
- Department of Chemistry, College of Science, Sultan Qaboos University, P.C. 123 Al-Khod, Muscat, Sultanate of Oman
| | - Mara G. Freire
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - João A. P. Coutinho
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
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66
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Schaeffer N, Passos H, Gras M, Mogilireddy V, Leal JP, Pérez-Sánchez G, Gomes JRB, Billard I, Papaiconomou N, Coutinho JAP. Mechanism of ionic-liquid-based acidic aqueous biphasic system formation. Phys Chem Chem Phys 2018; 20:9838-9846. [DOI: 10.1039/c8cp00937f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This work represents a major contribution to the understanding of ionic liquid-based acidic aqueous biphasic system formation and application.
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Affiliation(s)
- Nicolas Schaeffer
- CICECO
- Department of Chemistry
- University of Aveiro
- Campus Universitário de Santiago
- 3810-193 Aveiro
| | - Helena Passos
- CICECO
- Department of Chemistry
- University of Aveiro
- Campus Universitário de Santiago
- 3810-193 Aveiro
| | - Matthieu Gras
- LEPMI – Universite Grenoble-Alpes
- F-38000 Grenoble
- France
| | | | - João P. Leal
- C2TN
- DECN
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela
| | - Germán Pérez-Sánchez
- CICECO
- Department of Chemistry
- University of Aveiro
- Campus Universitário de Santiago
- 3810-193 Aveiro
| | - José R. B. Gomes
- CICECO
- Department of Chemistry
- University of Aveiro
- Campus Universitário de Santiago
- 3810-193 Aveiro
| | | | | | - João A. P. Coutinho
- CICECO
- Department of Chemistry
- University of Aveiro
- Campus Universitário de Santiago
- 3810-193 Aveiro
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67
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Bazel Y, Tupys A, Ostapiuk Y, Tymoshuk O, Imrich J, Šandrejová J. A simple non-extractive green method for the spectrophotometric sequential injection determination of copper(ii) with novel thiazolylazo dyes. RSC Adv 2018; 8:15940-15950. [PMID: 35542216 PMCID: PMC9080087 DOI: 10.1039/c8ra02039f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 04/23/2018] [Indexed: 11/21/2022] Open
Abstract
A facile sequential method for the determination of copper(ii) in tap and river waters with high sample throughput is proposed.
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Affiliation(s)
- Y. Bazel
- Faculty of Science
- P. J. Šafárik University
- 04-001 Košice
- Slovak Republic
| | - A. Tupys
- Faculty of Chemistry
- Ivan Franko National University of Lviv
- 79-005 Lviv
- Ukraine
| | - Y. Ostapiuk
- Faculty of Chemistry
- Ivan Franko National University of Lviv
- 79-005 Lviv
- Ukraine
| | - O. Tymoshuk
- Faculty of Chemistry
- Ivan Franko National University of Lviv
- 79-005 Lviv
- Ukraine
| | - J. Imrich
- Faculty of Science
- P. J. Šafárik University
- 04-001 Košice
- Slovak Republic
| | - J. Šandrejová
- Faculty of Science
- P. J. Šafárik University
- 04-001 Košice
- Slovak Republic
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68
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Racheva R, Tietgens N, Kerner M, Smirnova I. In situ continuous countercurrent cloud point extraction of microalgae cultures. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.08.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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69
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Arkhipov VP, Filippov A. The cloud point of aqueous solutions of ethoxylated monoalkylphenols in the individual state and in the presence of electrolytes. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1413656] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Victor P. Arkhipov
- Department of Physics, Kazan National Research Technological University, Kazan, Russia
| | - Andrei Filippov
- Institute of Physics, Kazan Federal University, Kazan, Russia
- Chemistry of Interfaces, Luleå University of Technology, Luleå, Sweden
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70
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Mortada WI, Kenawy IMM, Abdel-Rhman MH, El-Gamal GG, Moalla SMN. A new thiourea derivative [2-(3-ethylthioureido)benzoic acid] for cloud point extraction of some trace metals in water, biological and food samples. J Trace Elem Med Biol 2017; 44:266-273. [PMID: 28965586 DOI: 10.1016/j.jtemb.2017.09.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/30/2017] [Accepted: 09/01/2017] [Indexed: 11/27/2022]
Abstract
2-(3-Ethylthioureido)benzoic acid was prepared and characterized by electronic spectrum, elemental analysis, Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance spectrum and mass spectrum. The produced ligand was applied for the preconcentrative of Fe3+, Co2+, Cu2+ and Zn2+ in aqueous samples by cloud point extraction methodology. Triton X-114 was used as extractant. Experimental parameters that may affect the extraction process were examined and optimized; such as pH, ligand and triton concentrations, type of diluting solvent, extraction temperature and ionic strength. The calibration curves were linear upto 500μgL-1 for Fe3+, Cu2+ and Zn2+ and upto 200μgL-1 for Co2+. The achieved detection limits were 1.5, 0.23, 0.71 and 0.35μgL-1 for Fe3+, Co2+, Cu2+ and Zn2+ respectively. The accuracy was established by analysis of certified reference materials (Seronorm whole blood L2 and ZCS ZC85006 Tomato). The proposed procedure was used for preconcentration of these metal ions in water, biological and food samples prior to their determination by flame atomic absorption spectrometry.
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Affiliation(s)
- W I Mortada
- Urology and Nephrology Center, Mansoura University, Mansoura, Egypt.
| | - I M M Kenawy
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - M H Abdel-Rhman
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - G G El-Gamal
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - S M N Moalla
- Chemistry Department, Faculty of Science, Port Said University, Port Said, Egypt
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71
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Chiappisi L. Polyoxyethylene alkyl ether carboxylic acids: An overview of a neglected class of surfactants with multiresponsive properties. Adv Colloid Interface Sci 2017; 250:79-94. [PMID: 29056232 DOI: 10.1016/j.cis.2017.10.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/07/2017] [Accepted: 10/10/2017] [Indexed: 12/14/2022]
Abstract
In this work, an overview on aqueous solutions of polyoxyethylene alkyl ether carboxylic acids is given. Unique properties arise from the combination of the nonionic, temperature-responsive polyoxyethylene block with the weakly ionic, pH-responsive carboxylic acid termination in a single surfactant headgroup. Accordingly, this class of surfactant finds broad application across very different sectors. Despite their large use on an industrial and a technical scale, the literature lacks a systematic and detailed characterization of their physico-chemical properties which is provided herein. In addition, a comprehensive overview is given of their self-assembly and interfacial behavior, of their use as colloidal building blocks and for large-scale applications.
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Affiliation(s)
- Leonardo Chiappisi
- Technische Universität Berlin, Stranski Laboratorium für Physikalische Chemie und Theoretische Chemie, Institut für Chemie, Straße des 17. Juni 124, Sekr. TC7, D-10623 Berlin, Germany; Institut Max von Laue - Paul Langevin, Large Scale Structures Group, 71 avenue des Martyrs, Grenoble Cedex 9 38042, France.
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72
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Lu F, Liu L, Huang Y, Zhang X, Wang Z. Production of Monascus pigments as extracellular crystals by cell suspension culture. Appl Microbiol Biotechnol 2017; 102:677-687. [PMID: 29177624 DOI: 10.1007/s00253-017-8646-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/10/2017] [Accepted: 11/12/2017] [Indexed: 02/02/2023]
Abstract
It is generally accepted that Monascus pigments are predominantly cell-bound, including both intracellular and surface-bound pigments. This long-term misconception was corrected in the present work. Production of extracellular crystal pigments by submerged culture of Monascus sp. was confirmed by microscopic observation and collection of Monascus pigments from extracellular broth by direct membrane filtration. Following up the new fact, the bioactivity of mycelia as whole-cell biocatalyst for biosynthesis and biodegradation of Monascus pigments had been detailedly examined in both an aqueous solution and a nonionic surfactant micelle aqueous solution. Based on those experimental results, cell suspension culture in an aqueous medium was developed as a novel strategy for accumulation of high concentration of Monascus pigments. Thus, glucose feeding during submerged culture in the aqueous medium was carried out successfully and high orange Monascus pigments concentration of near 4 g/L was achieved.
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Affiliation(s)
- Fengling Lu
- School of Pharmacy, State Key Laboratory of Microbial Metabolism, and Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Lujie Liu
- School of Pharmacy, State Key Laboratory of Microbial Metabolism, and Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Yaolin Huang
- School of Pharmacy, State Key Laboratory of Microbial Metabolism, and Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Xuehong Zhang
- School of Life Science and Biotechnology, and State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Zhilong Wang
- School of Pharmacy, State Key Laboratory of Microbial Metabolism, and Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
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73
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Extractive biodegradation of diphenyl ethers in a cloud point system: Pollutant bioavailability enhancement and surfactant recycling. BIOTECHNOL BIOPROC E 2017. [DOI: 10.1007/s12257-017-0085-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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74
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Cai C, Pang Y, Zhan X, Zeng M, Lou H, Qian Y, Yang D, Qiu X. Using temperature-responsive zwitterionic surfactant to enhance the enzymatic hydrolysis of lignocelluloses and recover cellulase by cooling. BIORESOURCE TECHNOLOGY 2017; 243:1141-1148. [PMID: 28764128 DOI: 10.1016/j.biortech.2017.07.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 07/08/2017] [Accepted: 07/10/2017] [Indexed: 06/07/2023]
Abstract
Some zwitterionic surfactants exhibit upper critical solution temperature (UCST) in aqueous solutions. For the zwitterionic surfactant solution mixed with cellulase, when its temperature is below UCST, the cellulase can be recovered by coprecipitation with zwitterionic surfactant. In this work, 3-(Hexadecyldimethylammonio) propanesulfonate (SB3-16) was selected to enhance the enzymatic hydrolysis of lignocelluloses and recover the cellulase. After adding 2mmol/L of SB3-16, the enzymatic digestibility of eucalyptus pretreated by dilute acid (Eu-DA) and by sulfite (Eu-SPORL) increased from 27.9% and 35.1% to 72.6% and 89.7%, respectively. The results showed that SB3-16 could reduce the non-productive adsorption of cellulase on hydrophobic interface, while it did not significantly inhibit the activity of cellulase. For the solution contained 1wt% SB3-16 and 200mg protein/L CTec2 cellulase, 55.2% of protein could be recovered by cooling. The filter paper activity of the recovered cellulase was 1.93FPU/mg protein, which was 95.8% of its initial activity.
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Affiliation(s)
- Cheng Cai
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Yuxia Pang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Xuejuan Zhan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Meijun Zeng
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Hongming Lou
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China.
| | - Yong Qian
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Dongjie Yang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Xueqing Qiu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
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75
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McCord JP, Muddiman DC, Khaledi MG. Perfluorinated alcohol induced coacervates as extraction media for proteomic analysis. J Chromatogr A 2017; 1523:293-299. [DOI: 10.1016/j.chroma.2017.06.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 06/06/2017] [Accepted: 06/11/2017] [Indexed: 01/12/2023]
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76
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Altunay N, Gürkan R, Orhan U. Indirect determination of the flavor enhancer maltol in foods and beverages through flame atomic absorption spectrometry after ultrasound assisted-cloud point extraction. Food Chem 2017; 235:308-317. [DOI: 10.1016/j.foodchem.2017.05.066] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 05/06/2017] [Accepted: 05/14/2017] [Indexed: 11/25/2022]
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77
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Han J, Wang Y, Chen T, Hu X, Gu L, Tang X, Wang L, Ni L. Heat-induced coacervation for purification of Lycium barbarum polysaccharide based on amphiphilic polymer–protein complex formation. CAN J CHEM 2017. [DOI: 10.1139/cjc-2017-0008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Heat-induced coacervation of triblock copolymer solution was described, and its application in the purification of Lycium barbarum polysaccharide (LBP) was investigated. The formation of coacervate micelles–protein complex combined with the incompatibility between coacervate micelles and polysaccharide made it an ideal system for the separation of protein and LBP. This separation process was governed by a series of parameters including polymer concentration, amount of crude LBP solution, and pH. In the primary coacervation extraction process, LBP was preferentially distributed to dilute phase with a high recovery ratio of 82%, whereas 87% of protein was partitioned to the coacervate phase. The coacervate micelles–protein interaction and the interphase potential was regulated by temperature and electrolytes, respectively, which contributed to the recovery and recycling of the polymer. After phase separation, LBP was precipitated with the addition of ethanol. The FTIR spectrum was used to identify LBP. In addition, the antioxidant activity of LBP was measured.
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Affiliation(s)
- Juan Han
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China
| | - Yun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China
| | - Tong Chen
- Zhenjiang Entry-Exit Inspection Quarantine Bureau, State Key Laboratory of Food Additive and Condiment Testing, 84 Dongwu Road, Zhenjiang, 212013, PR China
| | - Xiaowei Hu
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China
| | - Lei Gu
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China
| | - Xu Tang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China
| | - Lei Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China
| | - Liang Ni
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China
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78
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Pharr DY. Green analytical chemistry – the use of surfactants as a replacement of organic solvents in spectroscopy. PHYSICAL SCIENCES REVIEWS 2017. [DOI: 10.1515/psr-2017-0006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThis chapter gives an introduction to the many practical uses of surfactants in analytical chemistry in replacing organic solvents to achieve greener chemistry. Taking a holistic approach, it covers some background of surfactants as chemical solvents, their properties and as green chemicals, including their environmental effects. The achievements of green analytical chemistry with micellar systems are reviewed in all the major areas of analytical chemistry where these reagents have been found to be useful.
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79
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Zhao W, Fan Y, Wang H, Wang Y. Coacervate of Polyacrylamide and Cationic Gemini Surfactant for the Extraction of Methyl Orange from Aqueous Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6846-6856. [PMID: 28622471 DOI: 10.1021/acs.langmuir.7b01421] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Coacervation in aqueous solution of the mixture of cationic ammonium surfactant hexamethylene-1,6-bis(dodecyldimethylammonium bromide) (12-6-12) and 10% hydrolyzed polyacrylamide (PAM) has been investigated. It was found that the 12-6-12/PAM mixture forms coacervate with a large network structure over a wide concentration range of surfactant and polyelectrolyte and shows great efficiency in the extraction of Methyl Orange (MO) from water owing to the cooperation of hydrophobic, electrostatic, and π-cation interactions. Meanwhile, the dye joins the coacervate and strengthens the network structure of the coacervate. In particular, benefiting from partial excess of 12-6-12 molecules, the coacervate phase presents selective adsorption behavior toward anionic dye MO in the presence of cationic dye methylene blue (MB). Furthermore, the coacervate phase is utilized to modify quartz sand and melamine foam, and the coacervate-treated adsorbents can adsorb MO efficiently. Moreover, the MO-loaded adsorbents are easily regenerated with hydrochloric acid, making this an inexpensive and environmentally benign process. These findings offer a simple and effective alternative for the treatment of dye contaminated water and the recovery of dyes.
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Affiliation(s)
- Weiwei Zhao
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yaxun Fan
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hua Wang
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yilin Wang
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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80
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Temel NK, Gürkan R. Extraction, Preconcentration, and Quantification of Low Levels of Free Formaldehyde from Some Beverage Matrices by Combination of Ultrasound-Assisted-Cloud Point Extraction with Spectrophotometry. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0973-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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81
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Pan T, Liu C, Zeng X, Xin Q, Xu M, Deng Y, Dong W. Biotoxicity and bioavailability of hydrophobic organic compounds solubilized in nonionic surfactant micelle phase and cloud point system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:14795-14801. [PMID: 28470500 DOI: 10.1007/s11356-017-9076-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 04/21/2017] [Indexed: 06/07/2023]
Abstract
A recent work has shown that hydrophobic organic compounds solubilized in the micelle phase of some nonionic surfactants present substrate toxicity to microorganisms with increasing bioavailability. However, in cloud point systems, biotoxicity is prevented, because the compounds are solubilized into a coacervate phase, thereby leaving a fraction of compounds with cells in a dilute phase. This study extends the understanding of the relationship between substrate toxicity and bioavailability of hydrophobic organic compounds solubilized in nonionic surfactant micelle phase and cloud point system. Biotoxicity experiments were conducted with naphthalene and phenanthrene in the presence of mixed nonionic surfactants Brij30 and TMN-3, which formed a micelle phase or cloud point system at different concentrations. Saccharomyces cerevisiae, unable to degrade these compounds, was used for the biotoxicity experiments. Glucose in the cloud point system was consumed faster than in the nonionic surfactant micelle phase, indicating that the solubilized compounds had increased toxicity to cells in the nonionic surfactant micelle phase. The results were verified by subsequent biodegradation experiments. The compounds were degraded faster by PAH-degrading bacterium in the cloud point system than in the micelle phase. All these results showed that biotoxicity of the hydrophobic organic compounds increases with bioavailability in the surfactant micelle phase but remains at a low level in the cloud point system. These results provide a guideline for the application of cloud point systems as novel media for microbial transformation or biodegradation.
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Affiliation(s)
- Tao Pan
- Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, 341000, People's Republic of China.
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong, Guangzhou, 510070, People's Republic of China.
- National engineering research center for ionic rare earth, Ganzhou, 341000, People's Republic of China.
| | - Chunyan Liu
- Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, 341000, People's Republic of China
| | - Xinying Zeng
- Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, 341000, People's Republic of China
| | - Qiao Xin
- Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, 341000, People's Republic of China
| | - Meiying Xu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong, Guangzhou, 510070, People's Republic of China
| | - Yangwu Deng
- Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, 341000, People's Republic of China
- National engineering research center for ionic rare earth, Ganzhou, 341000, People's Republic of China
| | - Wei Dong
- Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, 341000, People's Republic of China
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82
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Dalvadi H, Patel N, Parmar K. Systematic development of design of experiments (DoE) optimised self-microemulsifying drug delivery system of Zotepine. J Microencapsul 2017; 34:308-318. [PMID: 28452252 DOI: 10.1080/02652048.2017.1324920] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The aim of present investigation is to improve dissolution rate of poor soluble drug Zotepine by a self-microemulsifying drug delivery system (SMEDDS). Ternary phase diagram with oil (Oleic acid), surfactant (Tween 80) and co-surfactant (PEG 400) at apex were used to identify the efficient self-microemulsifying region. Box-Behnken design was implemented to study the influence of independent variables. Principal Component Analysis was used for scrutinising critical variables. The liquid SMEDDS were characterised for macroscopic evaluation, % Transmission, emulsification time and in vitro drug release studies. Optimised formulation OL1 was converted in to S-SMEDDS by using Aerosil® 200 as an adsorbent in the ratio of 3:1. The S-SMEDDS was characterised by SEM, DSC, globule size (152.1 nm), zeta-potential (-28.1 mV), % transmission study (98.75%), in vitro release (86.57%) at 30 min. The optimised solid SMEDDS formulation showed faster drug release properties as compared to conventional tablet of Zotepine.
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Affiliation(s)
- Hitesh Dalvadi
- a Department of Pharmaceutics , ROFEL, Shri G M Bilakhia College of Pharmacy , Gujarat , India
| | - Nikita Patel
- a Department of Pharmaceutics , ROFEL, Shri G M Bilakhia College of Pharmacy , Gujarat , India
| | - Komal Parmar
- a Department of Pharmaceutics , ROFEL, Shri G M Bilakhia College of Pharmacy , Gujarat , India
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83
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The peculiarities of the interphase distribution of amino acids in the cloud point extraction systems. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.02.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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84
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Ritter E, Racheva R, Jakobtorweihen S, Smirnova I. Influence of d -glucose as additive on thermodynamics and physical properties of aqueous surfactant two-phase systems for the continuous micellar extraction. Chem Eng Res Des 2017. [DOI: 10.1016/j.cherd.2017.02.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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85
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Murugesan S, Iyyasamy R. Nonionic surfactants induced cloud point extraction of Polyhydroxyalkanoate fromCupriavidus necator. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1307227] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Sivananth Murugesan
- Department of Chemical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
| | - Regupathi Iyyasamy
- Department of Chemical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
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86
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Zhao L, Zhang X, Wang Z. Extraction of anionic dyes with ionic liquid–nonionic surfactant aqueous two-phase system. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2016.1267213] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Lihong Zhao
- School of Pharmacy, State Key Laboratory of Microbial Metabolism and Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Xuehong Zhang
- School of Life Science and Biotechnology and State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Zhilong Wang
- School of Pharmacy, State Key Laboratory of Microbial Metabolism and Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University, Shanghai, P.R. China
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87
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Zhao W, Wang Y. Coacervation with surfactants: From single-chain surfactants to gemini surfactants. Adv Colloid Interface Sci 2017; 239:199-212. [PMID: 27260407 DOI: 10.1016/j.cis.2016.04.005] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/12/2016] [Indexed: 10/21/2022]
Abstract
Coacervation is a spontaneous process during which a colloidal dispersion separates into two immiscible liquid phases: a colloid-rich liquid phase in equilibrium with a diluted phase. Coacervation is usually divided into simple coacervation and complex coacervation according to the number of components. Surfactant-based coacervation normally contains traditional single-chain surfactants. With the development of surfactants, gemini surfactants with two amphiphilic moieties have been applied to form coacervation. This review summarizes the development of simple coacervation and complex coacervation in the systems of single-chain surfactants and gemini surfactants. Simple coacervation in surfactant solutions with additives or at elevated temperature and complex coacervation in surfactant/polymer mixtures by changing charge densities, molecular weight, ionic strength, pH, or temperature are reviewed. The comparison between gemini surfactants and corresponding monomeric single-chain surfactants reveals that the unique structures of gemini surfactants endow them with higher propensity to generate coacervation.
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88
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Liu X, Wang J, Cui Z, Yao H, Ge X, Chen W, Sun F. Temperature-induced reversible micelle–vesicle transition in aqueous solution of a pseudogemini surfactant without any additive. RSC Adv 2017. [DOI: 10.1039/c7ra02319g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Temperature-induced reversible micelle–vesicle transition is achieved in aqueous solution of a single pseudogemini surfactant without any additive.
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Affiliation(s)
- Xuemin Liu
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Jingwen Wang
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Zhenggang Cui
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Heping Yao
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Xin Ge
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Wen Chen
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Fengli Sun
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
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89
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Effect of Sodium Carbonate on the Cloud Point in Alkyl Ether/Brine Systems: Apparent Relation with Dynamic Interfacial Tension Minimum. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1870-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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90
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Barbosa RM, Severino P, Preté PSC, Santana MHA. Influence of different surfactants on the physicochemical properties of elastic liposomes. Pharm Dev Technol 2016; 22:360-369. [DOI: 10.3109/10837450.2016.1163387] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- R. M. Barbosa
- Biotechnological Process Department, College of Chemical Engineering, State University of Campinas, Campinas, Brazil
| | - P. Severino
- Laboratory of Nanotecnology and Nanomedicine (LNMed, Tiradentes University (Unit) and, Institute of Technology and Research (ITP), Aracaju, Brazil
| | - P. S. C. Preté
- Laboratory of Biochemistry, Chemistry Department, University of Lavras, Lavras, Brazil
| | - M. H. A. Santana
- Biotechnological Process Department, College of Chemical Engineering, State University of Campinas, Campinas, Brazil
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91
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Clouding in fatty acid dispersions for charge-dependent dye extraction. J Colloid Interface Sci 2016; 468:95-102. [DOI: 10.1016/j.jcis.2016.01.049] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 01/21/2016] [Accepted: 01/22/2016] [Indexed: 11/18/2022]
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92
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Orwick‐Rydmark M, Arnold T, Linke D. The Use of Detergents to Purify Membrane Proteins. ACTA ACUST UNITED AC 2016; 84:4.8.1-4.8.35. [DOI: 10.1002/0471140864.ps0408s84] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Thomas Arnold
- Boehringer‐Ingelheim Veterinary Research Center Hannover Germany
| | - Dirk Linke
- University of Oslo, Department of Biosciences Oslo Norway
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93
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Ionic liquids based gemini cationic surfactants as corrosion inhibitors for carbon steel in hydrochloric acid solution. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.01.066] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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94
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Davletbaeva P, Falkova M, Safonova E, Moskvin L, Bulatov A. Flow method based on cloud point extraction for fluorometric determination of epinephrine in human urine. Anal Chim Acta 2016; 911:69-74. [PMID: 26893087 DOI: 10.1016/j.aca.2015.12.045] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 12/19/2015] [Accepted: 12/22/2015] [Indexed: 12/01/2022]
Abstract
A novel stepwise injection fluorometric method for the determination of epinephrine in human urine has been developed. In the current study, the stepwise injection analysis (SWIA) was successfully combined with on-line in-syringe cloud point extraction (CPE) and fluorometric detection. The procedure was based on the epinephrine derivatization in the presence of o-phenylenediamine followed by the preconcentration stage based on the CPE with the nonionic surfactant Triton X-114. After the phase separation into a syringe of the flow system, the micellar phase containing the epinephrine derivative was transported to a fluorometric detector. The excitation and emission wavelengths were set at 447 nm and 550 nm, respectively. The conditions of epinephrine derivatization and CPE have been studied. The calibration plot constructed using the developed procedure was linear in the range of 1·10(-11)-5·10(-7) mol L(-1). The limit of detection, calculated as 3 σ of a blank test (n = 10), was found to be 3·10(-12) mol L(-1). The proposed method was successfully applied for the determination of epinephrine in human urine samples.
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Affiliation(s)
- Polina Davletbaeva
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya nab., St. Petersburg 199034 Russia.
| | - Marina Falkova
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya nab., St. Petersburg 199034 Russia
| | - Evgenia Safonova
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya nab., St. Petersburg 199034 Russia
| | - Leonid Moskvin
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya nab., St. Petersburg 199034 Russia
| | - Andrey Bulatov
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya nab., St. Petersburg 199034 Russia
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95
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Yau YK, Ooi CW, Ng EP, Lan JCW, Ling TC, Show PL. Current applications of different type of aqueous two-phase systems. BIORESOUR BIOPROCESS 2015. [DOI: 10.1186/s40643-015-0078-0] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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96
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Takahashi K, Matsuo M, Banno T, Toyota T. Micrometer-sized network structure of novel DNA-lipid conjugates induced by heat stimulation. SOFT MATTER 2015; 11:7053-7058. [PMID: 26249035 DOI: 10.1039/c5sm01456e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We have developed a novel lipid-bearing DNA that forms hairpin modules, including a single RNA monomer; this can be used to create micrometer-sized structures from nanometer-sized building blocks during breakage at the RNA site. In the presence of divalent metal ions and heat stimulation, we observed transition of the self-assembly, which results in the formation of a three-dimensional network structure. To our knowledge, this is also the first report of heat-induced micrometer-sized molecular self-assembly of molecules that carry biological information.
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Affiliation(s)
- K Takahashi
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan.
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97
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Triton X-114 cloud point extraction to subfractionate blood plasma proteins for two-dimensional gel electrophoresis. Anal Biochem 2015; 485:11-7. [DOI: 10.1016/j.ab.2015.05.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 05/13/2015] [Accepted: 05/25/2015] [Indexed: 11/21/2022]
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98
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Stepanov A, Vasilieva E, Valeeva F, Elistratova J, Mustafina A, Zakharova L, Amirov R, Morozov V, Kleshnina S, Solovyeva S, Rizvanov I, Antipin I, Konovalov A. Synthesis and aggregation properties of new biodegradable amphiphilic derivatives of p-tert-butylphenol for green separation of Gd(III) ions. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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99
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Simple one step synthesis of gemini cationic surfactant-based ionic liquids: Physicochemical, surface properties and biological activity. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.05.054] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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100
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Jalbani N, Soylak M. Preconcentration/separation of lead at trace level from water samples by mixed micelle cloud point extraction. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2015.02.025] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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