1
|
Arellano H, Nardello-Rataj V, Szunerits S, Boukherroub R, Fameau AL. Saturated long chain fatty acids as possible natural alternative antibacterial agents: Opportunities and challenges. Adv Colloid Interface Sci 2023; 318:102952. [PMID: 37392663 DOI: 10.1016/j.cis.2023.102952] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 07/03/2023]
Abstract
The spread of new strains of antibiotic-resistant pathogenic microorganisms has led to the urgent need to discover and develop new antimicrobial systems. The antibacterial effects of fatty acids have been well-known and recognized since the first experiments of Robert Koch in 1881, and they are now used in diverse fields. Fatty acids can prevent the growth and directly kill bacteria by insertion into their membrane. For that, a sufficient amount of fatty acid molecules has to be solubilized in water to transfer from the aqueous phase to the cell membrane. Due to conflicting results in the literature and lack of standardization methods, it is very difficult to draw clear conclusions on the antibacterial effect of fatty acids. Most of the current studies link fatty acids' effectiveness against bacteria to their chemical structure, notably the alkyl chain length and the presence of double bonds in their chain. Furthermore, the solubility of fatty acids and their critical aggregation concentration is not only related to their structure, but also influenced by medium conditions (pH, temperature, ionic strength, etc.). There is a possibility that the antibacterial activity of saturated long chain fatty acids (LCFA) may be underestimated due to the lack of water solubility and the use of unsuitable methods to assess their antibacterial activity. Thus, enhancing the solubility of these long chain saturated fatty acids is the main goal before examining their antibacterial properties. To increase their water solubility and thereby improve their antibacterial efficacy, novel alternatives may be considered, including the use of organic positively charged counter-ions instead of the conventional sodium and potassium soaps, the formation of catanionic systems, the mixture with co-surfactants, and solubilization in emulsion systems. This review summarizes the latest findings on fatty acids as antibacterial agents, with a focus on long chain saturated fatty acids. Additionally, it highlights the different ways to improve their water solubility, which may be a crucial factor in increasing their antibacterial efficacy. We finish with a discussion on the challenges, strategies and opportunities for the formulation of LCFAs as antibacterial agents.
Collapse
Affiliation(s)
- Helena Arellano
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Véronique Nardello-Rataj
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Sabine Szunerits
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520 - IEMN, F-59000 Lille, France
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520 - IEMN, F-59000 Lille, France
| | - Anne-Laure Fameau
- Univ. Lille, CNRS, INRAe, Centrale Lille, UMET, F-59000, Lille, France.
| |
Collapse
|
2
|
Frenkel-Pinter M, Samanta M, Ashkenasy G, Leman LJ. Prebiotic Peptides: Molecular Hubs in the Origin of Life. Chem Rev 2020; 120:4707-4765. [PMID: 32101414 DOI: 10.1021/acs.chemrev.9b00664] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The fundamental roles that peptides and proteins play in today's biology makes it almost indisputable that peptides were key players in the origin of life. Insofar as it is appropriate to extrapolate back from extant biology to the prebiotic world, one must acknowledge the critical importance that interconnected molecular networks, likely with peptides as key components, would have played in life's origin. In this review, we summarize chemical processes involving peptides that could have contributed to early chemical evolution, with an emphasis on molecular interactions between peptides and other classes of organic molecules. We first summarize mechanisms by which amino acids and similar building blocks could have been produced and elaborated into proto-peptides. Next, non-covalent interactions of peptides with other peptides as well as with nucleic acids, lipids, carbohydrates, metal ions, and aromatic molecules are discussed in relation to the possible roles of such interactions in chemical evolution of structure and function. Finally, we describe research involving structural alternatives to peptides and covalent adducts between amino acids/peptides and other classes of molecules. We propose that ample future breakthroughs in origin-of-life chemistry will stem from investigations of interconnected chemical systems in which synergistic interactions between different classes of molecules emerge.
Collapse
Affiliation(s)
- Moran Frenkel-Pinter
- NSF/NASA Center for Chemical Evolution, https://centerforchemicalevolution.com/.,School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Mousumi Samanta
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Gonen Ashkenasy
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Luke J Leman
- NSF/NASA Center for Chemical Evolution, https://centerforchemicalevolution.com/.,Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| |
Collapse
|
3
|
Fan P, Wang Y, Shen J, Jiang L, Zhuang W, Han Y, Zhang H. Self-assembly behaviors of C18 fatty acids in arginine aqueous solution affected by external conditions. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.05.087] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
4
|
Arnould A, Cousin F, Salonen A, Saint-Jalmes A, Perez A, Fameau AL. Controlling Foam Stability with the Ratio of Myristic Acid to Choline Hydroxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:11076-11085. [PMID: 30149714 DOI: 10.1021/acs.langmuir.8b02261] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The interfacial and foam properties of a model system based on the mixture between myristic acid and choline hydroxide have been investigated as a function of the molar ratio ( R) between these two components and temperature. The aim of this study was to obtain insight on the links between the self-assemblies in bulk and in the foam liquid channels, the surfactant packing at the interface, and the resulting foam properties and stability. A multiscale approach was used combining small angle neutron scattering, specular neutron reflectivity, surface tension measurements, and photography. We highlighted three regimes of foam stability in this system by modifying R: high foam stability for R < 1, intermediate at R ∼ 1, and low for R > 1. The different regimes come from the pH variations in bulk linked to R. The pH plays a crucial role at the molecular scale by setting the ionization state of the myristic acid molecules adsorbed at the gas-liquid interface, which in turn controls both the properties of the monolayer and the stability of the films separating the bubbles. The main requirement to obtain stable foams is to set the pH close to the p Ka in order to have a mixture of protonated and ionized molecules giving rise to intermolecular hydrogen bonds. As a result, a dense monolayer is formed at the interface with a low surface tension. R also modifies the structure of self-assembly in bulk and therefore within the foam, but such a morphological change has only a minor effect on the foam stability. This study confirms that foam stability in surfactant systems having a carboxylic acid as polar headgroup is mainly linked to the ionization state of the molecules at the interface.
Collapse
Affiliation(s)
- Audrey Arnould
- Biopolymères Interactions Assemblages INRA , la Géraudière , 44316 Nantes , France
| | - Fabrice Cousin
- Laboratoire Léon-Brillouin , CEA Saclay , 91191 Gif-sur-Yvette CEDEX, France
| | - Anniina Salonen
- Laboratoire de Physique des Solides, UMR 8502, Université of Paris Sud, 91405 Orsay , France
| | - Arnaud Saint-Jalmes
- Institut de Physique de Rennes, UMR CNRS 6251-Université Rennes 1, Rennes 35042 , France
| | - Adrian Perez
- Grupo de Biocoloides, Instituto de Tecnología de Alimentos , Universidad Nacional del Litoral , 1 de Mayo 3250 , Santa Fe 3000 , Argentina
| | - Anne-Laure Fameau
- Biopolymères Interactions Assemblages INRA , la Géraudière , 44316 Nantes , France
| |
Collapse
|
5
|
Shen Q, Wang Y, Shen J, Jiang L, Wei C, Zhang H. Growth and Cell Properties of Modified Lactobacillus plantarum CICC21001 with Supplementing C 18-FFAs to Growth Medium in vitro. Curr Microbiol 2018; 75:1133-1141. [PMID: 29704124 DOI: 10.1007/s00284-018-1499-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 04/23/2018] [Indexed: 01/18/2023]
Abstract
Fatty acids (FAs) are one of the important factors that can influence cell growth and membrane composition. The aim of this study was to investigate the influence of supplementing MLM+ growth medium with C18 free fatty acids (C18-FFAs), including stearic (C18:0), oleic (C18:1), linoleic (C18:2), and linolenic (C18:3) acid, on the growth of Lactobacillus plantarum CICC21001 by forming ion pairs with lysine to increase the solubility of FAs in liquid medium. The utilization of C18-FFAs was further confirmed by GC-FID. The investigation of cell properties, including cell surface hydrophobicity and zeta potential, was carried out for the modified L. plantarum and control group (non-supplementation). Furthermore, cell survival was measured in real time under heat (at 55 and 62 °C for 5 min), acid (pH 2.2), and bile salt stress. Our results indicated that the action of L. plantarum was modulated by assimilating C18-FFAs. This study suggested that C18-FFAs altered the life cycles and physiochemical properties of L. plantarum, which provided a guideline for probiotics production and their medical application.
Collapse
Affiliation(s)
- Qinke Shen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Yuxian Wang
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Jian Shen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Ling Jiang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, China
| | - Ce Wei
- College of Biological and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Hongman Zhang
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China.
| |
Collapse
|
6
|
Arnould A, Cousin F, Chabas L, Fameau AL. Impact of the molar ratio and the nature of the counter-ion on the self-assembly of myristic acid. J Colloid Interface Sci 2018; 510:133-141. [DOI: 10.1016/j.jcis.2017.09.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 12/01/2022]
|
7
|
Dhawan VV, Nagarsenker MS. Catanionic systems in nanotherapeutics – Biophysical aspects and novel trends in drug delivery applications. J Control Release 2017; 266:331-345. [DOI: 10.1016/j.jconrel.2017.09.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Accepted: 09/28/2017] [Indexed: 01/10/2023]
|
8
|
Binks BP. Colloidal Particles at a Range of Fluid-Fluid Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6947-6963. [PMID: 28478672 DOI: 10.1021/acs.langmuir.7b00860] [Citation(s) in RCA: 158] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The study of solid particles residing at fluid-fluid interfaces has become an established area in surface and colloid science recently, experiencing a renaissance since around 2000. Particles at interfaces arise in many industrial products and processes such as antifoam formulations, crude oil emulsions, aerated foodstuffs, and flotation. Although they act in many ways like traditional surfactant molecules, they offer distinct advantages also, and the area is now multidisciplinary, involving research in the fundamental science and potential applications. In this Feature Article, the flavor of some of this interest is given on the basis of recent work from our own group and includes the behavior of particles at oil-water, air-water, oil-oil, air-oil, and water-water interfaces. The materials capable of being prepared by assembling various kinds of particles at fluid interfaces include particle-stabilized emulsions, particle-stabilized aqueous and oil foams, dry liquids, liquid marbles, and powdered emulsions.
Collapse
Affiliation(s)
- Bernard P Binks
- School of Mathematics and Physical Sciences, University of Hull , Hull HU6 7RX, U.K
| |
Collapse
|
9
|
Hong Y, Xu W, Hu Y, Li G, Chen M, Hao J, Dong S. Multi-responsive emulsion of stearic acid soap aqueous solution. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.03.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
10
|
Wang Y, Jiang L, Wei C, Zhang H. Phase behaviors and self-assembled properties of ion-pairing amphiphile molecules formed by medium-chain fatty acids andl-arginine triggered by external conditions. NEW J CHEM 2017. [DOI: 10.1039/c7nj03299d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The responsive self-assembled structures of ion-pairing amphiphile molecules will provide good insights into various fields.
Collapse
Affiliation(s)
- Yuxian Wang
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Ling Jiang
- College of Food Science and Light Industry
- Nanjing Tech University
- Nanjing 211816
- China
| | - Ce Wei
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Hongman Zhang
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| |
Collapse
|
11
|
Wang Y, Jiang L, Shen Q, Shen J, Han Y, Zhang H. Investigation on the self-assembled behaviors of C18unsaturated fatty acids in arginine aqueous solution. RSC Adv 2017. [DOI: 10.1039/c7ra06088b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Self-assembled behaviors of UFAs in arginine solution have provided a theoretical basis for the application of two functional molecules in drug delivery.
Collapse
Affiliation(s)
- Yuxian Wang
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Ling Jiang
- College of Food Science and Light Industry
- Nanjing Tech University
- Nanjing 211816
- China
| | - Qinke Shen
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Jian Shen
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Yuwang Han
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Hongman Zhang
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| |
Collapse
|
12
|
Wolfrum S, Marcus J, Touraud D, Kunz W. A renaissance of soaps? - How to make clear and stable solutions at neutral pH and room temperature. Adv Colloid Interface Sci 2016; 236:28-42. [PMID: 27476328 DOI: 10.1016/j.cis.2016.07.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 07/14/2016] [Accepted: 07/14/2016] [Indexed: 01/06/2023]
Abstract
Soaps are the oldest and perhaps most natural surfactants. However, they lost much of their importance since "technical surfactants", usually based on sulfates or sulfonates, have been developed over the last fifty years. Indeed, soaps are pH- and salt-sensitive and they are irritant, especially to the eyes. In food emulsions, although authorized, they have a bad taste, and long-chain saturated soaps have a high Krafft temperature. We believe that most or perhaps all of these problems can be solved with modern formulation approaches. We start this paper with a short overview of our present knowledge of soaps and soap formulations. Then we focus on the problem of the lacking soap solubility at neutral pH values. For example, it is well known that with the food emulsifier sodium oleate (NaOl), clear and stable aqueous solutions can only be obtained at pH values higher than 10. A decrease in the pH value leads to turbid and unstable solutions. This effect is not compatible with the formulation of aqueous stable and drinkable formulations with neutral or even acidic pH values. However, the pH value/phase behavior of aqueous soap solutions can be altered by the addition of other surfactants. Such a surfactant can be Rebaudioside A (RebA), a steviol glycoside from the plant Stevia rebaudiana which is used as a natural food sweetener. In a recent paper, we showed the influence of RebA on the apKa value of sodium oleate in a beverage microemulsion and on its clearing temperature. In the present paper, we report on the effect of the edible bio-surfactant RebA, on the macroscopic and microscopic phase behavior of simple aqueous sodium oleate solutions at varying pH values. The macroscopic phase behavior is investigated by visual observation and turbidity measurements. The microscopic phase behavior is analyzed by acid-base titration curves, phase-contrast and electron microscopy. It turned out that even at neutral pH, aqueous NaOl/RebA solutions can be completely clear and stable for more than 50days at room temperature. This is for the first time that a long chain soap could be really solubilized in water at neutral pH at room temperature. At last, these findings were applied to prepare stable, highly translucent and drinkable aqueous solutions of omega-3-fatty acids at a pH value of 7.5.
Collapse
|
13
|
Black RA, Blosser MC. A Self-Assembled Aggregate Composed of a Fatty Acid Membrane and the Building Blocks of Biological Polymers Provides a First Step in the Emergence of Protocells. Life (Basel) 2016; 6:E33. [PMID: 27529283 PMCID: PMC5041009 DOI: 10.3390/life6030033] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/02/2016] [Accepted: 08/09/2016] [Indexed: 02/01/2023] Open
Abstract
We propose that the first step in the origin of cellular life on Earth was the self-assembly of fatty acids with the building blocks of RNA and protein, resulting in a stable aggregate. This scheme provides explanations for the selection and concentration of the prebiotic components of cells; the stabilization and growth of early membranes; the catalysis of biopolymer synthesis; and the co-localization of membranes, RNA and protein. In this article, we review the evidence and rationale for the formation of the proposed aggregate: (i) the well-established phenomenon of self-assembly of fatty acids to form vesicles; (ii) our published evidence that nucleobases and sugars bind to and stabilize such vesicles; and (iii) the reasons why amino acids likely do so as well. We then explain how the conformational constraints and altered chemical environment due to binding of the components to the membrane could facilitate the formation of nucleosides, oligonucleotides and peptides. We conclude by discussing how the resulting oligomers, even if short and random, could have increased vesicle stability and growth more than their building blocks did, and how competition among these vesicles could have led to longer polymers with complex functions.
Collapse
Affiliation(s)
- Roy A Black
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA.
| | | |
Collapse
|
14
|
Xu W, Liu H, Song A, Hao J. Bilayers and wormlike micelles at high pH in fatty acid soap systems. J Colloid Interface Sci 2016; 465:304-10. [DOI: 10.1016/j.jcis.2015.12.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 12/01/2015] [Accepted: 12/01/2015] [Indexed: 11/24/2022]
|
15
|
Li K, Pan Z, Guan C, Zheng H, Li K, Zhang H. A tough self-assembled natural oligomer hydrogel based on nano-size vesicle cohesion. RSC Adv 2016. [DOI: 10.1039/c6ra03720h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Vesicles made from shellac-COOH similar to asymmetric gemini surfactants could aggregated together to fabricate the network of the shellac hydrogel.
Collapse
Affiliation(s)
- Kai Li
- Research Institute of Resources Insects
- Chinese Academy of Forestry
- Kunming
- People's Republic of China
| | - Zhengdong Pan
- Research Institute of Resources Insects
- Chinese Academy of Forestry
- Kunming
- People's Republic of China
| | - Cheng Guan
- Faculty of Material Engineering
- Southwest Forestry University
- Kunming
- People's Republic of China
| | - Hua Zheng
- Research Institute of Resources Insects
- Chinese Academy of Forestry
- Kunming
- People's Republic of China
| | - Kun Li
- Research Institute of Resources Insects
- Chinese Academy of Forestry
- Kunming
- People's Republic of China
| | - Hong Zhang
- Research Institute of Resources Insects
- Chinese Academy of Forestry
- Kunming
- People's Republic of China
| |
Collapse
|
16
|
Li G, Yang Q, Song A, Hao J. Self-assembled structural transition from vesicle phase to sponge phase and emulsifying properties in mixtures of arginine and fatty acids. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.09.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
17
|
Arnould A, Gaillard C, Fameau AL. pH-responsive fatty acid self-assembly transition induced by UV light. J Colloid Interface Sci 2015. [DOI: 10.1016/j.jcis.2015.07.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
18
|
Xu W, Zhang H, Zhong Y, Jiang L, Xu M, Zhu X, Hao J. Bilayers at High pH in the Fatty Acid Soap Systems and the Applications for the Formation of Foams and Emulsions. J Phys Chem B 2015; 119:10760-7. [PMID: 26237503 DOI: 10.1021/acs.jpcb.5b04553] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In our previous work, we reported bilayers at high pH in the stearic acid/CsOH/H2O system, which was against the traditional viewpoint that fatty acid (FA) bilayers must be formed at the pKa of the fatty acid. Herein, the microstructures at high pH of several fatty acid soap systems were investigated systematically. We found that palmitic acid/KOH/H2O, palmitic acid/CsOH/H2O, stearic acid/KOH/H2O, and stearic acid/CsOH/H2O systems can form bilayers at high pH. The bilayer structure was demonstrated by cryogenic transmission electron microscopy (cryo-TEM) and deuterium nuclear magnetic resonance ((2)H NMR), and molecular dynamics simulation was used to confirm the formation of bilayers. The influence of fatty acids with different chain lengths (n = 10, 12, 14, 16, and 18) and different counterions including Li(+), Na(+), K(+), Cs(+), (CH3)4N(+), (C2H5)4N(+), (C3H7)4N(+), and (C4H9)4N(+) on the formation of bilayers was discussed. The stability of foam and emulsification properties were compared between bilayers and micelles, drawing the conclusion that bilayer structures possess a much stronger ability to foam and stronger emulsification properties than micelles do.
Collapse
|
19
|
Xu W, Gu H, Zhu X, Zhong Y, Jiang L, Xu M, Song A, Hao J. CO2-Controllable Foaming and Emulsification Properties of the Stearic Acid Soap Systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5758-5766. [PMID: 25961406 DOI: 10.1021/acs.langmuir.5b01295] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fatty acids, as a typical example of stearic acid, are a kind of cheap surfactant and have important applications. The challenging problem of industrial applications is their solubility. Herein, three organic amines-ethanolamine (EA), diethanolamine (DEA), and triethanolamine (TEA)-were used as counterions to increase the solubility of stearic acid, and the phase behaviors were investigated systematically. The phase diagrams were delineated at 25 and 50 °C, respectively. The phase-transition temperature was measured by differential scanning calorimetry (DSC) measurements, and the microstructures were vesicles and planar sheets observed by cryogenic transmission electron microscopy (cryo-TEM) observations. The apparent viscosity of the samples was determined by rheological characterizations. The values, rcmc, for the three systems were less than 30 mN·m(-1). Typical samples of bilayers used as foaming agents and emulsifiers were investigated for the foaming and emulsification assays. CO2 was introduced to change the solubility of stearic acid, inducing the transition of their surface activity and further achieving the goal of defoaming and demulsification.
Collapse
|
20
|
Binks BP, Campbell S, Mashinchi S, Piatko MP. Dispersion behavior and aqueous foams in mixtures of a vesicle-forming surfactant and edible nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:2967-2978. [PMID: 25734773 DOI: 10.1021/la504761x] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In an attempt to prepare ultrastable aqueous foams composed entirely of food-grade ingredients, we describe the foamability and foam stability of aqueous phases containing either calcium carbonate particles (CaCO3), sodium stearoyl lactylate surfactant (SSL), or their mixtures. Techniques including zeta potential measurements, adsorption isotherm determination, contact angles and optical and cryo-scanning electron microscopy are used to probe the interaction between particles and surfactant molecules. Aqueous dispersions of inherently hydrophilic cationic CaCO3 nanoparticles do not foam to any great extent. By contrast, aqueous dispersions of anionic SSL, which forms a lamellar phase/vesicles, foam progressively on increasing the concentration. Despite their foamability being low compared to that of micelle-forming surfactant sodium dodecyl sulfate, they are much more stable to collapse with half-lives (of up to 40 days) of around 2 orders of magnitude higher above the respective aggregation concentrations. We believe that, in addition to surfactant lamellae around bubbles, the bilayers within vesicles contain surfactant chains in a solidlike state yielding indestructible aggregates that jam the aqueous films between bubbles, reducing the drainage rate and both bubble coalescence and gas-transfer between bubbles. In mixtures of particles and surfactant, the adsorption of SSL monomers occurs on particle surfaces, leading to an increase in their hydrophobicity, promoting particle adsorption to bubble surfaces. Ultrastable foams result with half-lives of around an order of magnitude higher again at low concentrations and foams which lose only around 30% of their volume within a year at high concentrations. In the latter case, we evidence a high surface density of discrete surfactant-coated particles at bubble surfaces, rendering them stable to coalescence and disproportionation.
Collapse
Affiliation(s)
| | - Shawn Campbell
- ‡Rich Products Corporation, One Robert Rich Way, Buffalo, New York 14213, United States
| | | | - Michael P Piatko
- ‡Rich Products Corporation, One Robert Rich Way, Buffalo, New York 14213, United States
| |
Collapse
|
21
|
Douliez JP, Zhendre V, Grélard A, Dufourc EJ. Aminosilane/oleic acid vesicles as model membranes of protocells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:14717-14724. [PMID: 25420203 DOI: 10.1021/la503908z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Oleic acid vesicles represent good models of membrane protocells that could have existed in prebiotic times. Here, we report the formation, growth polymorphism, and dynamics of oleic acid spherical vesicles (1-10 μm), stable elongated vesicles (>50 μm length; 1-3 μm diameter), and chains of vesicles (pearl necklaces, >50 μm length; 1-3 μm diameter) in the presence of aminopropyl triethoxysilane and guanidine hydrochloride. These vesicles exhibit a remarkable behavior with temperature: spherical vesicles only are observed when keeping the sample at 4 °C for 2 h, and self-aggregated spherical vesicles occur upon freezing/unfreezing (-20/20 °C) samples. Rather homogeneous elongated vesicles are reformed upon heating samples at 80 °C. The phenomenon is reversible through cycles of freezing/heating or cooling/heating of the same sample. Deuterium NMR evidences a chain packing rigidity similar to that of phospholipid bilayers in cellular biomembranes. We expect these bilayered vesicles to be surrounded by a layer of aminosilane oligomers, offering a variant model for membrane protocells.
Collapse
Affiliation(s)
- Jean-Paul Douliez
- UMR 1332, biologie et pathologie du fruit, INRA, centre de Bordeaux, 33883 Villenave d'Ornon, France
| | | | | | | |
Collapse
|
22
|
Li G, Feng L, Zhao P, Xu W, Wang Y, Song A, Hao J. Lysine-based chiral vesicles. J Colloid Interface Sci 2014; 431:233-40. [DOI: 10.1016/j.jcis.2014.05.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 05/30/2014] [Accepted: 05/31/2014] [Indexed: 10/25/2022]
|
23
|
Fameau AL, Arnould A, Saint-Jalmes A. Responsive self-assemblies based on fatty acids. Curr Opin Colloid Interface Sci 2014. [DOI: 10.1016/j.cocis.2014.08.005] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
24
|
Douliez JP, Navailles L, Dufourc EJ, Nallet F. Fully deuterated magnetically oriented system based on fatty acid direct hexagonal phases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5075-5081. [PMID: 24758608 DOI: 10.1021/la500808q] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
There is strong demand in the field of NMR for simple oriented lipid supramolecular assemblies, the constituents of which can be fully deuterated, for specifically studying the structure of host protonated molecules (e.g., peptides, proteins...) in a lipid environment. Also, small-angle neutron scattering (SANS) in fully deuterated oriented systems is powerful for gaining information on protonated host molecules in a lipid environment by using the contrast proton/deuterium method. Here we report on a very simple system made of fatty acids (dodecanoic and tetradecanoic) and ethanolamine in water. All components of this system can be obtained commercially as perdeuterated. Depending on the molar ratio and the concentration, the system self-assembles at room temperature into a direct hexagonal phase that is oriented by moderate magnetic fields of a few tesla. The orientation occurs within the magnetic field upon cooling the system from its higher-temperature isotropic phase: the lipid cylinders of the hexagonal phase become oriented parallel to the field. This is shown by solid-state NMR using either perdeuterated fatty acids or ethanolamine. This system bears strong interest for studying host protonated molecules but also in materials chemistry for building oriented solid materials.
Collapse
Affiliation(s)
- Jean-Paul Douliez
- UMR 1332, Biologie et Pathologie du Fruit, INRA, Centre de Bordeaux, 33883 Villenave d'Ornon, France
| | | | | | | |
Collapse
|
25
|
Fameau AL, Zemb T. Self-assembly of fatty acids in the presence of amines and cationic components. Adv Colloid Interface Sci 2014; 207:43-64. [PMID: 24345730 DOI: 10.1016/j.cis.2013.11.017] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 11/18/2013] [Accepted: 11/21/2013] [Indexed: 11/27/2022]
Abstract
Fatty acids can self-assemble under various shapes in the presence of amines or cationic components. We assemble and compare these types of self-assembly leading toward a catanionic system either with a cationic surfactant or with an amine component playing the role of counter-ion. First, we focus on the molar ratio as a key driving parameter. Known and yet un-known values from other quantities governing the colloidal properties of these systems such as structural surface charge, osmotic pressure, molecular segregation, rigidity, in plane colloidal interactions and melting transition are discussed. We include also recent results obtained on the interfacial and foaming properties of these systems. We will highlight the specificity of these self-assemblies leading to unusual macroscopic properties rich of robust applications.
Collapse
|
26
|
Abstract
Stable aqueous dispersions of fatty acids can now be obtained and yield multiple applications.
Collapse
Affiliation(s)
- Jean-Paul Douliez
- UMR 1332
- Biologie et Pathologie du Fruit
- INRA
- Centre de Bordeaux
- 33883 Villenave d'Ornon, France
| | - Cédric Gaillard
- UR 1268 Biopolymères Interactions et Assemblages
- INRA
- rue de la Géraudière
- 44316 Nantes, France
| |
Collapse
|
27
|
Arriaga LR, Varade D, Carriere D, Drenckhan W, Langevin D. Adsorption, organization, and rheology of catanionic layers at the air/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:3214-22. [PMID: 23421650 DOI: 10.1021/la304868n] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We have investigated the adsorption and organization at the air/water interface of catanionic molecules released from a dispersion of solid-like catanionic vesicles composed of myristic acid and cetyl trimethylammonium chloride at the 2:1 ratio. These vesicles were shown recently to be promising foam stabilizers. Using Brewster angle microscopy, we observed the formation of a catanionic monolayer at the air/water interface composed of liquid-condensed domains in a liquid-expanded matrix. Further adsorption of catanionic molecules forced them to pack, thereby forming a very dense monolayer that prevented further vesicle rupture by avoiding contact of the vesicles with air. Moreover, confocal fluorescence microscopy revealed the presence of layers of intact vesicles that were progressively creaming toward this catanionic monolayer; the surface tension of the vesicle dispersion remained constant upon creaming. The catanionic monolayer behaved as a soft glassy material, an amorphous solid with time- and temperature-dependent properties. Using interfacial oscillatory rheology, we found that the monolayer relaxed mechanical stresses in seconds and melted at a temperature very close to the melting transition temperature of the vesicle bilayers. These results have potential application in the design of smart foams that have temperature-tunable stability.
Collapse
Affiliation(s)
- Laura R Arriaga
- Laboratoire de Physique des Solides, UMR 8502, Université Paris Sud, Orsay, France
| | | | | | | | | |
Collapse
|
28
|
Hu X, Li Y, He X, Li C, Li Z, Cao X, Xin X, Somasundaran P. Structure–Behavior–Property Relationship Study of Surfactants as Foam Stabilizers Explored by Experimental and Molecular Simulation Approaches. J Phys Chem B 2011; 116:160-7. [DOI: 10.1021/jp205753w] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoying Hu
- Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, Shandong University, ShanDa South Road, Jinan, Shandong 250100, P. R. China
| | - Ying Li
- Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, Shandong University, ShanDa South Road, Jinan, Shandong 250100, P. R. China
| | - Xiujuan He
- Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, Shandong University, ShanDa South Road, Jinan, Shandong 250100, P. R. China
| | - Chunxiu Li
- Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, Shandong University, ShanDa South Road, Jinan, Shandong 250100, P. R. China
| | - Zhengquan Li
- Geological Scientific Research Institute, Shengli Oilfield, Dongying 257015, P. R. China
| | - Xulong Cao
- Geological Scientific Research Institute, Shengli Oilfield, Dongying 257015, P. R. China
| | - Xia Xin
- Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, Shandong University, ShanDa South Road, Jinan, Shandong 250100, P. R. China
| | - P. Somasundaran
- Langmuir Center for Colloids and Interfaces, Columbia University, New York, New York 10027, United States
| |
Collapse
|
29
|
Adsorption of multilamellar tubes with a temperature tunable diameter at the air/water interface. J Colloid Interface Sci 2011; 362:397-405. [DOI: 10.1016/j.jcis.2011.06.080] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 06/29/2011] [Accepted: 06/30/2011] [Indexed: 11/20/2022]
|
30
|
Fameau AL, Houinsou-Houssou B, Ventureira JL, Navailles L, Nallet F, Novales B, Douliez JP. Self-assembly, foaming, and emulsifying properties of sodium alkyl carboxylate/guanidine hydrochloride aqueous mixtures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4505-4513. [PMID: 21405069 DOI: 10.1021/la2002404] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Unsaturated fatty acids may be extracted from various agricultural resources and are widely used as soaps in the industry. However, there also exist a large variety of saturated and hydroxy fatty acids in nature, but their metal salts crystallize at room temperature in water, hampering their use in biological and chemical studies or for industrial applications. Addition of guanidine hydrochloride (GuHCl) to sodium salt of myristic acid has been shown to prevent its crystallization in water, forming stable flat bilayers at room temperature. Herein, we extend this finding to two other saturated fatty acids (palmitic and stearic acids) and two hydroxyl fatty acids (juniperic and 12 hydroxy stearic acids) and study more deeply (by using small angle neutron scattering) the supramolecular assemblies formed in both saturated and hydroxyl fatty acid systems. In addition, we take the advantage that crystallization no longer occurs at room temperature in the presence of GuHCl to study the foaming and emulsifying properties of those fatty acid dispersions. Briefly, our results show that all fatty acids, even juniperic acid, which is a bola lipid, are arranged in a bilayer structure that may be interdigitated. Depending on the nature of the fatty acid, the systems exhibit good foamability and foam stability (except for juniperic acid), and emulsion stability was good. Those findings should be of interest for using saturated long chain (and hydroxyl) fatty acids as surfactants for detergency or even materials chemistry.
Collapse
Affiliation(s)
- Anne-Laure Fameau
- UR1268, INRA Nantes, Biopolymères Interactions Assemblages, rue de la Géraudière, 44316 Nantes, France
| | | | | | | | | | | | | |
Collapse
|