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Reddy ST, Sivaramakrishna D, Mamatha K, Sharma M, Swamy MJ. Packing polymorphism, odd-even alternation and thermotropic phase transitions in N-, O-diacylethanolamines with varying N-acyl chains. A combined experimental and computational study. Phys Chem Chem Phys 2021; 23:25264-25277. [PMID: 34734606 DOI: 10.1039/d1cp03704h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-,O-Diacylethanolamines (DAEs) are derived by simple esterification of bioactive N-acylethanolamines, which are present in plant and animal tissues. In this study, two homologous series of DAEs, namely N-acyl (n = 8-15), O-palmitoylethanolamines (Nn-O16s) and N-acyl (n = 8-14), O-pentadecanoylethanolamines (Nn-O15s) were synthesized and characterized with respect to thermotropic phase transitions, crystal structures and intermolecular interactions. In addition, computational studies were performed to get a molecular level insight into the role of different factors in selective polymorphism in Nn-O16s and Nn-O15s. Differential scanning calorimetric studies revealed that dry Nn-O16s exhibit odd-even alternation in their calorimetric properties, which is absent in Nn-O15s. The 3-dimensional structures of three Nn-O16s (n = 12-14) and two Nn-O15s (n = 12, 14) have been determined by single-crystal X-ray diffraction. Analysis of the molecular packing in these crystals showed the presence of two packing polymorphs (α and β) in the crystal lattice of Nn-O16s, whereas only the β polymorph was observed in the Nn-O15s. Further, intermolecular hydrogen bonding interactions (N-H⋯O and C-H⋯O) and dispersion interactions among acyl chains have been found to stabilize the molecular packing observed in the crystal lattice. Molecular dynamics simulations show that the β polymorph is slightly energetically preferred over the α polymorph in all the systems due to favorable packing of terminal methyl groups at the interlayers. These findings are relevant for understanding the interactions of the DAEs with membrane lipids and proteins.
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Affiliation(s)
| | | | - Keerthi Mamatha
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India.
| | - Manju Sharma
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India.
| | - Musti J Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India.
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Bougueroua M, Mousli R, Tazerouti A. Synthesis and Physicochemical Properties of Alanine-Based Surfactants. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1878-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mäki-Arvela P, Tkacheva A, Dosmagambetova I, Chapelliere Y, Hachemi I, Kumar N, Aho A, Murzin DY. Thermal and Catalytic Amidation of Stearic Acid with Ethanolamine for Production of Pharmaceuticals and Surfactants. Top Catal 2016. [DOI: 10.1007/s11244-016-0636-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wang F, Cao TT, Zhang YQ. Effect of silk protein surfactant on silk degumming and its properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 55:131-6. [DOI: 10.1016/j.msec.2015.05.041] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 03/14/2015] [Accepted: 05/08/2015] [Indexed: 12/01/2022]
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Vollhardt D. Phases and phase transition in insoluble and adsorbed monolayers of amide amphiphiles: Specific characteristics of the condensed phases. Adv Colloid Interface Sci 2015; 222:728-42. [PMID: 25129816 DOI: 10.1016/j.cis.2014.07.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 07/06/2014] [Accepted: 07/29/2014] [Indexed: 10/24/2022]
Abstract
For understanding the role of amide containing amphiphiles in inherently complex biological processes, monolayers at the air-water interface are used as simple biomimetic model systems. The specific characteristics of the condensed phases and phase transition in insoluble and adsorbed monolayers of amide amphiphiles are surveyed to highlight the effect of the chemical structure of the amide amphiphiles on the interfacial interactions in model monolayers. The mesoscopic topography and/or two-dimensional lattice structures of selected amino acid amphiphiles, amphiphilic N-alkylaldonamide, amide amphiphiles with specific tailored headgroups, such as amide amphiphiles based on derivatized ethanolamine, e.g. acylethanolamines (NAEs) and N-,O-diacylethanolamines (DAEs) are presented. Special attention is devoted the dominance of N,O-diacylated ethanolamine in mixed amphiphilic acid amide monolayers. The evidence that a first order phase transition can occur in adsorption layers and that condensed phase domains of mesoscopic scale can be formed in adsorption layers was first obtained on the basis of the experimental characteristics of a tailored amide amphiphile. New thermodynamic and kinetic concepts for the theoretical description of the characteristics of amide amphiphile's monolayers were developed. In particular, the equation of state for Langmuir monolayers generalized for the case that one, two or more phase transitions occur, and the new theory for phase transition in adsorbed monolayers are experimentally confirmed at first by amide amphiphile monolayers. Despite the significant progress made towards the understanding the model systems, these model studies are still limited to transfer the gained knowledge to biological systems where the fundamental physical principles are operative in the same way. The study of biomimetic systems, as described in this review, is only a first step in this direction.
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A novel sodium N-fatty acyl amino acid surfactant using silkworm pupae as stock material. Sci Rep 2014; 4:4428. [PMID: 24651079 PMCID: PMC5394753 DOI: 10.1038/srep04428] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 03/05/2014] [Indexed: 12/03/2022] Open
Abstract
A novel sodium N-fatty acyl amino acid (SFAAA) surfactant was synthesized using pupa oil and pupa protein hydrolysates (PPH) from a waste product of the silk industry. The aliphatic acids from pupa oil were modified into N-fatty acyl chlorides by thionyl chloride (SOCl2). SFAAA was synthesized using acyl chlorides and PPH. GC-MS analysis showed fatty acids from pupa oil consist mainly of unsaturated linolenic and linoleic acids and saturated palmitic and stearic acids. SFAAA had a low critical micelle concentration, great efficiency in lowering surface tension and strong adsorption at an air/water interface. SFAAA had a high emulsifying power, as well as a high foaming power. The emulsifying power of PPH and SFAAA in an oil/water emulsion was better with ethyl acetate as the oil phase compared to n-hexane. The environment-friendly surfactant made entirely from silkworm pupae could promote sustainable development of the silk industry.
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Das S, Maiti S, Ghosh S. Synthesis of two biofriendly anionic surfactants (N-n-decanoyl-l-valine and N-n-decanoyl-l-leucine) and their mixed micellization with nonionic surfactant Mega-10 in Tris-buffer medium at pH 9. RSC Adv 2014. [DOI: 10.1039/c3ra44677h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Wu MH, Zhang YQ. Nanofiltration recovery of sericin from silk processing waste and synthesis of a lauroyl sericin-based surfactant and its characteristics. RSC Adv 2014. [DOI: 10.1039/c3ra45549a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Kundu A, Dasmandal S, Majumdar T, Mahapatra A. Effect of anionic biocompatible amino acid surfactant and sodium dodecyl sulfate on the rate of alkaline hydrolysis of tris(2,2′-bipyridine)iron(II) complex: A comparative study. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2012.11.072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Brezesinski G, Dobner B, Stefaniu C, Vollhardt D. Monolayer characteristics of a long-chain N,O-diacyl substituted ethanolamine at the air/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5386-92. [PMID: 21449593 DOI: 10.1021/la200243y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The N- and/or O-acylation of amphiphilic ethanolamine attracts particular attention because of its interesting biological, pharmaceutical, and medicinal properties. Tetradecanoic acid-2-[(1-oxotetradecyl)amino]ethyl ester (TAOAE) as the selected N,O-diacyl derivative of ethanolamine has been synthesized in order to obtain first information about its main interfacial characteristics, such as the surface pressure-area (π-A) isotherms, the morphology of the condensed phase domains, the lattice structure of the condensed phase, and information about the existence of interfacial hydrogen bonds (-NH···O═C-). The π-A isotherms of TAOAE, similar to those of the most usual monolayers of amphiphiles, show a sharp break point (A(c)) indicating the first-order phase transition from the fluid (liquid-expanded (LE), gaseous (G)) to the condensed (liquid-condensed (LC)) phase. On the mesoscopic scale, the dendritic domains homogeneously reflecting suggest an orientation of the alkyl chains perpendicular to the aqueous surface. The grazing incidence X-ray diffraction (GIXD) studies reveal hexagonal packing of the TAOAE molecules oriented perpendicular to the surface in an LS phase. The existence of a hydrogen-bonding network in the monolayer is supported by infrared reflection absorption spectroscopy (IRRAS) experiments.
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Affiliation(s)
- G Brezesinski
- Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam/Golm, Germany
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Husson E, Garcia-Matilla V, Humeau C, Chevalot I, Fournier F, Marc I. Enzymatic acylation of a bifunctional molecule in 2-methyl-2-butanol: Kinetic modelling. Enzyme Microb Technol 2010. [DOI: 10.1016/j.enzmictec.2009.11.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kamlekar RK, Tarafdar PK, Swamy MJ. Synthesis, calorimetric studies, and crystal structures of N, O-diacylethanolamines with matched chains. J Lipid Res 2010; 51:42-52. [PMID: 19597189 DOI: 10.1194/jlr.m900105-jlr200] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Recent studies show that N-, O-diacylethanolamines (DAEs) can be derived by the O-acylation of N-acylethanolamines (NAEs) under physiological conditions. Because the content of NAEs in a variety of organisms increases in response to stress, it is likely that DAEs may also be present in biomembranes. In view of this, a homologous series of DAEs with matched acyl chains (n = 10-20) have been synthesized and characterized. Transition enthalpies and entropies obtained from differential scanning calorimetry show that dry DAEs with even and odd acyl chains independently exhibit linear dependence on the chainlength. Linear least-squares analyses yielded incremental values contributed by each methylene group to the transition enthalpy and entropy and the corresponding end contributions. N-, O-Didecanoylethanolamine (DDEA), N-, O-dilauroylethanolamine (DLEA), and N-, O-dimyristoylethanolamine (DMEA) crystallized in the orthorhombic space group Pbc(21) with four symmetry-related molecules in the unit cell. Single-crystal X-ray diffraction studies show that DDEA, DLEA, and DMEA are isostructural and adopt an L-shaped structure with the N-acyl chain and the central ethanolamine moiety being essentially identical to the structure of N-acylethanolamines, whereas the O-acyl chain is linear with all-trans conformation. In all three DAEs, the lipid molecules are organized in a bilayer fashion wherein the N-acyl and O-acyl chains from adjacent layers oppose each other.
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Tarafdar PK, Swamy MJ. Polymorphism in ‘L’ shaped lipids: structure of N-, O-diacylethanolamines with mixed acyl chains. Chem Phys Lipids 2009; 162:25-33. [DOI: 10.1016/j.chemphyslip.2009.08.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Revised: 08/15/2009] [Accepted: 08/18/2009] [Indexed: 11/25/2022]
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Husson E, Humeau C, Blanchard F, Framboisier X, Marc I, Chevalot I. Chemo-selectivity of the N,O-enzymatic acylation in organic media and in ionic liquids. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcatb.2008.02.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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