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Monti GA, Falcone RD, Moyano F, Correa NM. Green AOT reverse micelles as nanoreactors for alkaline phosphatase. The hydrogen bond "dances" between water and the enzyme, the reaction product, and the reverse micelles interface. RSC Adv 2023; 13:1194-1202. [PMID: 36686944 PMCID: PMC9811498 DOI: 10.1039/d2ra06296h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 12/21/2022] [Indexed: 01/06/2023] Open
Abstract
In this work, we present an investigation of the influence of water encapsulated in 1,4-bis-2-ethylhexylsulfosuccinate/methyl laurate and 1,4-bis-2-ethylhexylsulfosuccinate/isopropyl myristate reverse micelles on the enzymatic hydrolysis of 1-naphthyl phosphate by alkaline phosphatase. Our results show that the enzyme is active in the biocompatible reverse micelles studied and that the Michaelis-Menten kinetic model is valid in all systems. We found that both micellar systems studied have a particular behavior toward pH and that the penetration of external solvents into the interfaces is crucial to understanding the effect. Methyl laurate does not disrupt the interface and is not necessary to control the pH value since alkaline phosphatase in the center of the micelles is always solvated similarly. In contrast, isopropyl myristate disrupts the interfaces so that the water and 1-naphthol molecules cannot form hydrogen bond interactions with the polar head of the surfactant. Then, when the water is at pH = 7, the 1-naphthol moves away to the interfaces inhibiting alkaline phosphatase which is not observable when the water is at pH = 10. Our study shows that the concept of pH cannot be used directly in a confined environment. In addition, our research is of great importance in the field of reactions that occur in reverse micelles, catalyzed by enzymes.
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Affiliation(s)
- Gustavo A. Monti
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS, CONICET-UNRC), Departamento de Química, Universidad Nacional de Río CuartoRío CuartoArgentina,Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA, CONICET-UNRC), Departamento de Tecnología Química, Universidad Nacional de Río CuartoRío CuartoArgentina
| | - R. Darío Falcone
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS, CONICET-UNRC), Departamento de Química, Universidad Nacional de Río CuartoRío CuartoArgentina
| | - Fernando Moyano
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS, CONICET-UNRC), Departamento de Química, Universidad Nacional de Río CuartoRío CuartoArgentina
| | - N. Mariano Correa
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS, CONICET-UNRC), Departamento de Química, Universidad Nacional de Río CuartoRío CuartoArgentina
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Dib N, Girardi VR, Silber JJ, Correa NM, Falcone RD. How the external solvent in biocompatible reverse micelles can improve the alkaline phosphatase behavior. Org Biomol Chem 2021; 19:4969-4977. [PMID: 34002175 DOI: 10.1039/d0ob02371j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the last decade, the nature of the nonpolar solvents that can be part of reverse micelles (RMs) has been the topic of several investigations to improve their applications. In this sense, the hydrolysis of 1-naphthyl phosphate catalyzed by the enzyme alkaline phosphatase (AP) was used as a probe to investigate the effect of the change of the external solvent on RMs formulated with the anionic surfactant sodium diethylhexyl sulfosuccinate (AOT). As external nonpolar solvents, two biocompatible lipophilic esters, isopropyl myristate and methyl laurate, and the traditional nonpolar solvents, n-heptane and benzene, were used. The results were compared among the RMs investigated and with the reaction in homogeneous media. Thus, the effect of the nanoconfinement as well as the impact of the replacement of a conventional external nonpolar solvent by biocompatible solvents were analyzed. The results indicate that the catalytic efficiency in the AOT RMs is larger than that in homogeneous media, denoting a different hydration level over the AP enzyme, which is directly related to the different degrees of nonpolar solvent penetration to the RM interface. Our findings demonstrated that toxic solvents such as n-heptane and benzene can be replaced by nontoxic ones (isopropyl myristate or methyl laurate) in AOT RMs without affecting the performance of micellar systems as nanoreactors, making them a green and promising alternative toward efficient and sustainable chemistry.
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Affiliation(s)
- Nahir Dib
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina and Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina.
| | - Valeria R Girardi
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina
| | - Juana J Silber
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina and Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina.
| | - N Mariano Correa
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina and Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina.
| | - R Dario Falcone
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina and Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina.
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Biocompatible Solvents and Ionic Liquid-Based Surfactants as Sustainable Components to Formulate Environmentally Friendly Organized Systems. Polymers (Basel) 2021; 13:polym13091378. [PMID: 33922597 PMCID: PMC8122929 DOI: 10.3390/polym13091378] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 01/03/2023] Open
Abstract
In this review, we deal with the formation and application of biocompatible water-in-oil microemulsions commonly known as reverse micelles (RMs). These RMs are extremely important to facilitate the dissolution of hydrophilic and hydrophobic compounds for biocompatibility in applications in drug delivery, food science, and nanomedicine. The combination of two wisely chosen types of compounds such as biocompatible non-polar solvents and ionic liquids (ILs) with amphiphilic character (surface-active ionic liquids, SAILs) can be used to generate organized systems that perfectly align with the Green Chemistry concepts. Thus, we describe the current state of SAILs (protic and aprotic) to prepare RMs using non-polar but safe solvents such as esters derived from fatty acids, among others. Moreover, the use of the biocompatible solvents as the external phase in RMs and microemulsions/nanoemulsions with the other commonly used biocompatible surfactants is detailed showing the diversity of preparations and important applications. As shown by multiple examples, the properties of the RMs can be modified by changes in the type of surfactant and/or external solvents but a key fact to note is that all these modifications generate novel systems with dissimilar properties. These interesting properties cannot be anticipated or extrapolated, and deep analysis is always required. Finally, the works presented provide valuable information about the use of biocompatible RMs, making them a green and promising alternative toward efficient and sustainable chemistry.
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Yang C, Xu R, Tang S, Zhuang Y, Luo L, Liu X. Free H‐Bonding Interaction Sites in Rigid‐Chain Polymers and Their Filling Approach: A Molecular Dynamics Simulation Study. ADVANCED THEORY AND SIMULATIONS 2021. [DOI: 10.1002/adts.202100016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Cheng Yang
- College of Polymer Science and Engineering State Key Laboratory of Polymer Material and Engineering Sichuan University Chengdu 610065 China
| | - Ruopei Xu
- College of Polymer Science and Engineering State Key Laboratory of Polymer Material and Engineering Sichuan University Chengdu 610065 China
| | - Siyi Tang
- College of Polymer Science and Engineering State Key Laboratory of Polymer Material and Engineering Sichuan University Chengdu 610065 China
| | - Yongbing Zhuang
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering University of Chinese Academy of Sciences Beijing 100190 China
| | - Longbo Luo
- College of Polymer Science and Engineering State Key Laboratory of Polymer Material and Engineering Sichuan University Chengdu 610065 China
| | - Xiangyang Liu
- College of Polymer Science and Engineering State Key Laboratory of Polymer Material and Engineering Sichuan University Chengdu 610065 China
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Cobo Solís AK, Luna MA, Falcone RD, Correa NM, Molina PG. Electrochemical Methodology as an Useful Tool for the Interfacial Characterization of Aqueous Reverse Micelles. ChemistrySelect 2019. [DOI: 10.1002/slct.201903904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Airam K. Cobo Solís
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS)UNRC-CONICET, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
- Departamento de QuímicaUniversidad Nacional de Río CuartoFacultad de Ciencias Exactas, Físico-Químicas y Naturales, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
| | - M. Alejandra Luna
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS)UNRC-CONICET, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
- Departamento de QuímicaUniversidad Nacional de Río CuartoFacultad de Ciencias Exactas, Físico-Químicas y Naturales, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
| | - R. Darío Falcone
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS)UNRC-CONICET, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
- Departamento de QuímicaUniversidad Nacional de Río CuartoFacultad de Ciencias Exactas, Físico-Químicas y Naturales, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
| | - N. Mariano Correa
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS)UNRC-CONICET, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
- Departamento de QuímicaUniversidad Nacional de Río CuartoFacultad de Ciencias Exactas, Físico-Químicas y Naturales, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
| | - Patricia G. Molina
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS)UNRC-CONICET, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
- Departamento de QuímicaUniversidad Nacional de Río CuartoFacultad de Ciencias Exactas, Físico-Químicas y Naturales, Agencia Postal # 3 C.P. X5804BYA Río Cuarto ARGENTINA
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Dib N, Silber JJ, Correa NM, Falcone RD. Combination of a protic ionic liquid-like surfactant and biocompatible solvents to generate environmentally friendly anionic reverse micelles. NEW J CHEM 2019. [DOI: 10.1039/c9nj02268f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
imim–DEHP, a versatile protic IL-like surfactant to formulate aqueous RMs in biocompatible non-polar solvents.
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Affiliation(s)
- Nahir Dib
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS)
- CONICET-UNRC
- Departamento de Química
- Universidad Nacional de Río Cuarto
- C. P. X5804BYA Río Cuarto
| | - Juana J. Silber
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS)
- CONICET-UNRC
- Departamento de Química
- Universidad Nacional de Río Cuarto
- C. P. X5804BYA Río Cuarto
| | - N. Mariano Correa
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS)
- CONICET-UNRC
- Departamento de Química
- Universidad Nacional de Río Cuarto
- C. P. X5804BYA Río Cuarto
| | - R. Dario Falcone
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS)
- CONICET-UNRC
- Departamento de Química
- Universidad Nacional de Río Cuarto
- C. P. X5804BYA Río Cuarto
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