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Fan Y, Wang S, Yang J, Wang R, Wang Y, Zhu X, Wang Z. Microemulsions based on Acer truncatum seed oil and its fatty acids: fabrication, rheological property, and stability. J Microencapsul 2024; 41:296-311. [PMID: 38709162 DOI: 10.1080/02652048.2024.2348450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 04/24/2024] [Indexed: 05/07/2024]
Abstract
AIMS To construct the microemulsion delivery system (ME) loading ATSO and NA and study their physicochemical characteristics to enhance their stability and water solubility. METHODS By plotting ternary phase diagrams, the composition and proportions of the MEs were determined. The physicochemical characteristics and stability of MEs were evaluated by mean diameter, polydispersity index (PDI), pH, electrical conductivity, transmission electron microscopy (TEM), rheological behaviour measurement, and phase inversion temperature (PIT). RESULTS The MEs was composed with EL-40 as a surfactant and specifically with the addition of ethanol as a cosurfactant in NA-loaded ME. The mean diameters of ATSO-loaded ME and NA-loaded ME were 39.65 ± 0.24 nm and 32.90 ± 2.65 nm, and PDI were 0.49 ± 0.01 and 0.28 ± 0.14, respectively. The TEM confirmed the spherical and smooth morphology of MEs. The rheological results indicated that MEs are dilatant fluids with the advantages of low viscosity, high fluidity, and tolerance to temperature fluctuations. The mean diameter and PDI of MEs showed no significant change after storage at 25 °C for 28 days and centrifugation. CONCLUSION The prepared microemulsions could expand the application prospects of ATSO and NA products in cosmetics, medicine, foods and other fields.
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Affiliation(s)
- Yaqing Fan
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Shuting Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Jiayi Yang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Ruixue Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Yulu Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Xuanhe Zhu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Zhanzhong Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
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2
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Gundogdu EA, Demir ES, Ekinci M, Ozgenc E, Ilem Ozdemir D, Senyigit Z, Asikoglu M. The effect of radiolabeled nanostructured lipid carrier systems containing imatinib mesylate on NIH-3T3 and CRL-1739 cells. Drug Deliv 2021; 27:1695-1703. [PMID: 33263456 PMCID: PMC7745890 DOI: 10.1080/10717544.2020.1841337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The aim of current study is to develop new nanostructured lipid carrier systems (NLCSs) containing imatinib mesylate (IMT) and evaluate their targeting efficiency on NIH-3T3 as fibroblast cells and CRL-1739 as gastric adenocarcinoma cells with radiolabeled formulations. Three formulations (F1-IMT, F2-IMT and F3-IMT) were prepared and radiolabeled with 1 mCi/0.1 mL of [99mTc]Tc. The effect of reducing and antioxidant agents on radiolabeling process was evaluated and radiochemical purity of formulations was performed by radio thin-layer radiochromatography (RTLC). The results demonstrated that the radiochemical purity was found to be above 90% for [99mTc]Tc-F1-IMT and [99mTc]Tc-F2-IMT, while radiochemical purity of [99mTc]Tc-F3-IMT was found to be 85.61 ± 2.24%. Also, [99mTc]Tc-F1-IMT and [99mTc]Tc-F2-IMT have better stability in cell medium and saline than [99mTc]Tc-F3-IMT. Targeting efficiency of [99mTc]Tc-F1-IMT and [99mTc]Tc-F2-IMT comparatively evaluated by cell binding studies with [99mTc]NaTcO4 on NIH-3T3 and CRL-1739 cells. The cell binding capacity and targeting/non-targeting cell uptake ratio of these two formulations was found to be higher than [99mTc]NaTcO4 in CRL-1739. It is thought that the knowledge achieved in this study would contribute to using [99mTc]Tc-F1-IMT and [99mTc]Tc F2-IMT as an diagnosis and treatment agents.
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Affiliation(s)
| | - Emine Selin Demir
- Department of Radiopharmacy, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Meliha Ekinci
- Department of Radiopharmacy, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Emre Ozgenc
- Department of Radiopharmacy, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Derya Ilem Ozdemir
- Department of Radiopharmacy, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Zeynep Senyigit
- Department of Radiopharmacy, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Makbule Asikoglu
- Department of Radiopharmacy, Faculty of Pharmacy, Ege University, Izmir, Turkey
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3
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Fan T, Chen L, Xia X, Wu Y, Zhang J, Yin K, Liu F, Yan Z. Dissipative Particle Dynamics Quantitative Simulation of the Formation Mechanism and Emulsification Driving Force of Deep Eutectic Solvent-Based Surfactant-Free and Water-Free Microemulsion. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c06193] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Taotao Fan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Li Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaomeng Xia
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yuehang Wu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jianwei Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - KangLing Yin
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Feng Liu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zongcheng Yan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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4
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Almasi L, Radi M, Amiri S, Torri L. Fully dilutable Thymus vulgaris essential oil:acetic or propionic acid microemulsions are potent fruit disinfecting solutions. Food Chem 2020; 343:128411. [PMID: 33131952 DOI: 10.1016/j.foodchem.2020.128411] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 12/31/2022]
Abstract
The aim of this study was to evaluate the effect of acetic (AA) or propionic (PA) acid as a cosurfactant on the microemulsion (ME) characteristics of Thymus vulgaris essential oil (TVO). The results showed that addition of propylene glycol to TVO/AA or PA:T80/water MEs gave dilutable systems with particles ~59 nm in diameter. Plain TVO showed the highest antimicrobial activity against E. coli, S. aureus, and S. typhi in in vitro antimicrobial tests, followed closely by AA/PA-MEs. The antimicrobial activity of AA/PA-MEs used as a washing solution on cucumber and strawberry samples was remarkably greater than those of free TVO, TVO nanoemulsions, and chlorhexidine solutions against E. coli and S. aureus. The sensory properties of the samples were not changed by the use of AA/PA-MEs at 0.05 or 0.1% TVO. The results introduce dilutable TVO:AA/PA-MEs for incorporation of TVO in aqueous systems for use as a fruit/vegetable disinfecting agent.
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Affiliation(s)
- Laleh Almasi
- Department of Food Science and Technology, Yasooj Branch, Islamic Azad University, Yasooj, Iran; Young Researchers and Elite Club, Yasooj Branch, Islamic Azad University, Yasooj, Iran
| | - Mohsen Radi
- Department of Food Science and Technology, Yasooj Branch, Islamic Azad University, Yasooj, Iran; Young Researchers and Elite Club, Yasooj Branch, Islamic Azad University, Yasooj, Iran.
| | - Sedigheh Amiri
- Department of Food Science and Technology, Yasooj Branch, Islamic Azad University, Yasooj, Iran; Young Researchers and Elite Club, Yasooj Branch, Islamic Azad University, Yasooj, Iran.
| | - Luisa Torri
- University of Gastronomic Sciences, Piazza Vittorio Emanuele 9, 12042 Pollenzo-Bra, Italy.
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Zhang J, Chen L, Wang A, Yan Z. Dissipative Particle Dynamics Simulation of Ionic Liquid-Based Microemulsion: Quantitative Properties and Emulsification Mechanism. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05660] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jianwei Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Li Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Aili Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- School of Chemistry and Material Science, Ludong University, Yantai 264025, China
| | - Zongcheng Yan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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6
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Kanwar R, Gradzielski M, Prevost S, Appavou MS, Mehta S. Experimental validation of biocompatible nanostructured lipid carriers of sophorolipid: Optimization, characterization and in-vitro evaluation. Colloids Surf B Biointerfaces 2019; 181:845-855. [DOI: 10.1016/j.colsurfb.2019.06.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/11/2019] [Accepted: 06/16/2019] [Indexed: 01/29/2023]
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7
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Kaur A, Goindi S, Katare OP. Formulation, characterisation andin vivoevaluation of lipid-based nanocarrier for topical delivery of diflunisal. J Microencapsul 2016; 33:475-86. [DOI: 10.1080/02652048.2016.1216189] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Godoy CA, Valiente M, Pons R, Montalvo G. Effect of fatty acids on self-assembly of soybean lecithin systems. Colloids Surf B Biointerfaces 2015; 131:21-8. [PMID: 25938851 DOI: 10.1016/j.colsurfb.2015.03.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/23/2015] [Accepted: 03/31/2015] [Indexed: 11/25/2022]
Abstract
With the increasing interest in natural formulations for drug administration and functional foods, it is desirable a good knowledge of the phase behavior of lecithin/fatty acid formulations. Phase structure and properties of ternary lecithin/fatty acids/water systems are studied at 37°C, making emphasis in regions with relatively low water and fatty acid content. The effect of fatty acid saturation degree on the phase microstructure is studied by comparing a fully saturated (palmitic acid, C16:0), monounsaturated (oleic acid, C18:1), and diunsaturated (linoleic acid, C18:2) fatty acids. Phase determinations are based on a combination of polarized light microscopy and small-angle X-ray scattering measurements. Interestingly, unsaturated (oleic acid and linoleic acid) fatty acid destabilizes the lamellar bilayer. Slight differences are observed between the phase diagrams produced by the unsaturated ones: small lamellar, medium cubic and large hexagonal regions. A narrow isotropic fluid region also appears on the lecithin-fatty acid axis, up to 8wt% water. In contrast, a marked difference in phase microsctructure was observed between unsaturated and saturated systems in which the cubic and isotropic fluid phases are not formed. These differences are, probably, a consequence of the high Krafft point of the C16 saturated chains that imply rather rigid chains. However, unsaturated fatty acids result in more flexible tails. The frequent presence of, at least, one unsaturated chain in phospholipids makes it very likely a better mixing situation than in the case of more rigid chains. This swelling potential favors the formation of reverse hexagonal, cubic, and micellar phases. Both unsaturated fatty acid systems evolve by aging, with a reduction of the extension of reverse hexagonal phase and migration of the cubic phase to lower fatty acid and water contents. The kinetic stability of the systems seems to be controlled by the unsaturation of fatty acids.
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Affiliation(s)
- C A Godoy
- Departamento de Ingeniería de los procesos Agroalimentarios y Biotecnológicos (GIPAB), Universidad del Valle, A.A. 25360 Cali, Colombia
| | - M Valiente
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Pharmacy, University of Alcalá, Ctra. Madrid-Barcelona Km 33.6, E-28871 Alcalá de Henares, Madrid, Spain
| | - R Pons
- Department de Tecnologia Química i de Tensioactius, Institut de Química Avançada de Catalunya, IQAC-CSIC, E-08034 Barcelona, Spain
| | - G Montalvo
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Pharmacy, University of Alcalá, Ctra. Madrid-Barcelona Km 33.6, E-28871 Alcalá de Henares, Madrid, Spain; University Institute of Research in Police Sciences (IUICP), University of Alcalá, Ctra. Madrid-Barcelona Km 33.6, E-28871 Alcalá de Henares, Madrid, Spain.
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9
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Lidich N, Wachtel EJ, Aserin A, Garti N. Water-dilutable microemulsions for transepithelial ocular delivery of riboflavin phosphate. J Colloid Interface Sci 2015; 463:342-8. [PMID: 26614391 DOI: 10.1016/j.jcis.2015.02.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 02/03/2015] [Accepted: 02/03/2015] [Indexed: 10/24/2022]
Abstract
Riboflavin phosphate (RFP) is an essential compound in the treatment of keratoconus - a degenerative, non-inflammatory disease of the cornea. Currently, the quantitative and efficient transport of riboflavin to the cornea is possible after mechanical removal of the epithelium. To avoid surgical intervention, it is therefore important to develop a method for quantitatively transporting riboflavin across the intact epithelium. In the present study, an RFP-loaded microemulsion was prepared, which could potentially function as an ocular drug delivery system crossing the eye epithelium. The specially designed water-dilutable microemulsion was based on a mixture of nonionic surfactants. Propylene glycol and glycerol acted as cosurfactant and cosolvent assisting in the solubilization of the RFP. The glycerol-rich water-free concentrate consisted of direct micelles for which glycerol served as the hydrophilic phase. In formulations with up to 40wt% water, the hydrophilic surfactant headgroups and glycerol strongly bind water molecules (DSC and SD-NMR). Above 60wt% water, globular, O/W nanodroplets, ∼14nm in diameter, are formed (SAXS, cryo-TEM, and SD-NMR). The structure of microemulsions loaded with 0.14-4.25wt% RFP (0.29-8.89mmol per 100g formulation) is not significantly influenced by the presence of the RFP. However, in the microemulsions containing 10-80wt% water, the mobility of RFP in the microemulsion is constrained by strong interactions with the surfactants and cosurfactant, and therefore free transport of the molecule can be achieved only upon higher (>80wt%) water dilutions.
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Affiliation(s)
- Nina Lidich
- The Casali Center for Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 91904, Israel
| | - Ellen J Wachtel
- Faculty of Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Abraham Aserin
- The Casali Center for Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 91904, Israel
| | - Nissim Garti
- The Casali Center for Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 91904, Israel.
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11
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Mouri A, Diat O, Lerner DA, Ghzaoui AE, Ajovalasit A, Dorandeu C, Maurel JC, Devoisselle JM, Legrand P. Water solubilization capacity of pharmaceutical microemulsions based on Peceol®, lecithin and ethanol. Int J Pharm 2014; 475:324-34. [DOI: 10.1016/j.ijpharm.2014.07.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 07/09/2014] [Accepted: 07/11/2014] [Indexed: 11/27/2022]
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12
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Wang A, Chen L, Jiang D, Yan Z. Formation and characterization of epoxidized soybean oil based ionic liquid microemulsions. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Mouri A, Diat O, El Ghzaoui A, Bauer C, Maurel JC, Devoisselle JM, Dorandeu C, Legrand P. Phase behavior of reverse microemulsions based on Peceol®. J Colloid Interface Sci 2014; 416:139-46. [DOI: 10.1016/j.jcis.2013.10.058] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 10/23/2013] [Accepted: 10/24/2013] [Indexed: 10/26/2022]
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14
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Montalvo G, Pons R, Zhang G, Díaz M, Valiente M. Structure and phase equilibria of the soybean lecithin/PEG 40 monostearate/water system. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14369-79. [PMID: 24205925 DOI: 10.1021/la402764w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PEG stearates are extensively used as emulsifiers in many lipid-based formulations. However, the scheme of the principles of the lipid-surfactant polymer interactions are still poorly understood and need more studies. A new phase diagram of a lecithin/PEG 40 monostearate/water system at 30 °C is reported. First, we have characterized the binary PEG 40 monostearate/water system by the determination of the critical micelle concentration value and the viscous properties. Then, the ternary phase behavior and the influence of phase structure on their macroscopic properties are studied by a combination of different techniques, namely, optical microscopy, small-angle X-ray scattering, differential scanning calorimetry, and rheology. The phase behavior is complex, and some samples evolve even at long times. The single monophasic regions correspond to micellar, swollen lamellar, and lamellar gel phases. The existence of extended areas of phase coexistence (hexagonal, cubic, and lamellar liquid crystalline phases) may be a consequence of the low miscibility of S40P in the lecithin bilayer as well as of the segregation of the phospholipid polydisperse hydrophobic chains. The presence of the PEG 40 monostearate has less effect in the transformation to the cubic phase for lecithin than that found in other systems with simple glycerol-based lipids.
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Affiliation(s)
- G Montalvo
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá , E28871 Alcalá de Henares (Madrid), Spain
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A novel method to produce solid lipid nanoparticles using n-butanol as an additional co-surfactant according to the o/w microemulsion quenching technique. Chem Phys Lipids 2013; 174:32-8. [PMID: 23743405 DOI: 10.1016/j.chemphyslip.2013.05.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 05/07/2013] [Accepted: 05/09/2013] [Indexed: 11/21/2022]
Abstract
Solid Lipid Nanoparticles (SLN) and Nanostructured Lipid Carriers (NLC) are novel medicinal carriers for controlled drug release and drug targeting in different roots of administration such as parenteral, oral, ophthalmic and topical. These carriers have some benefits such as increased drug stability, high drug payload, the incorporation of lipophilic and hydrophilic drugs, and no biotoxicity. Therefore, due to the cost-efficient, proportionally increasable, and reproducible preparation of SLN/NLC and the avoidance of organic solvents used, the warm microemulsion quenching method was selected from among several preparation methods for development in this research. To prepare the warm O/W microemulsion, lipids (distearin, stearic acid, beeswax, triolein alone or in combination with others) were melted at a temperature of 65°C. After that, different ratios of Tween60 (10-22.5%) and glyceryl monostearate (surfactant and co-surfactant) and water were added, and the combination was stirred. Then, 1-butanol (co-surfactant) was added dropwise until a clear microemulsion was formed and titration continued to achieve cloudiness (to obtain the microemulsion zone). The warm o/w microemulsions were added dropwise into 4°C water (1:5 volume ratio) while being stirred at 400 or 600 rpm. Lipid nanosuspensions were created upon the addition of the warm o/w microemulsion to the cold water. The SLN were obtained over a range of concentrations of co-surfactants and lipids and observed for microemulsion stability (clearness). For selected preparations, characterization involved also determination of mean particle size, polydispersity and shape. According to the aim of this study, the optimum formulations requiring the minimum amounts of 1-butanol (1.2%) and lower temperatures for creation were selected. Mono-disperse lipid nanoparticles were prepared in the size range 77 ± 1 nm to 124 ± 21 nm according to a laser diffraction particle size analyzer and transmission electron microscopy. This method for preparing lipid nanoparticles by warm o/w microemulsion quenching was found to be more cost efficient and proportionally increasable in comparison with other preparation methods such as high pressure homogenization. These lipid nanoparticles, due to the combination of hard lipids with soft and/or liquid lipids, become good candidates for a wide range of medicaments as carriers for pharmaceutical and medicinal purposes.
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Fadda P, Monduzzi M, Caboi F, Piras S, Lazzari P. Solid lipid nanoparticle preparation by a warm microemulsion based process: Influence of microemulsion microstructure. Int J Pharm 2013; 446:166-75. [DOI: 10.1016/j.ijpharm.2013.02.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 02/08/2013] [Accepted: 02/09/2013] [Indexed: 10/27/2022]
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17
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Reis MFT, Bonomo RCF, de Souza AO, da Silva LHM, Veloso CM, Minim LA, Fontan RDCI. Calorimetric studies of microemulsion systems with lecithin, isooctane and butanol. Food Res Int 2012. [DOI: 10.1016/j.foodres.2012.08.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Souto EB, Doktorovova S, Gonzalez-Mira E, Egea MA, Garcia ML. Feasibility of Lipid Nanoparticles for Ocular Delivery of Anti-Inflammatory Drugs. Curr Eye Res 2010; 35:537-52. [DOI: 10.3109/02713681003760168] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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19
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Multi-Scale Modelling And Coarse-Grained Analysis Of Triglycerides Dynamics. COMPUTER AIDED CHEMICAL ENGINEERING 2010. [DOI: 10.1016/s1570-7946(10)28105-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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20
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Bitan-Cherbakovsky L, Yuli-Amar I, Aserin A, Garti N. Structural rearrangements and interaction within H(II) mesophase induced by cosolubilization of vitamin E and ascorbic acid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13106-13113. [PMID: 19852480 DOI: 10.1021/la901195t] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We investigated the effect of ascorbic acid (AA) cosolubilized with vitamin E (VE) on reverse hexagonal (H(II)) mesophase. The H(II) phase comprises monoolein (GMO)/d-alpha-tocopherol (VE) in a ratio of 90/10 by weight and 12.5 wt % water. The macrostructural characteristics of this system were determined by polarized light microscopy and small-angle X-ray scattering measurements. We used differential scanning calorimetry and attenuated total reflectance Fourier transform infrared to characterize the microstructure, the vibration of the functional groups, and the location of the AA guest molecule. AA was incorporated to the system in two steps: 1-4 wt % AA and 5-6 wt % AA. We compared this system to one containing tricaprylin as the oil phase, as previously reported. These measurements revealed that AA is localized first in the water rich-core and in the interface, and acts as a chaotropic molecule that decreases the water melting point. When a larger quantity of AA (5-6 wt %) is added, the system is saturated, and the AA is located in the inner cylinder and manifested by more moderate distortion. The addition of AA also causes alteration in the behavior of the GMO hydrocarbon chains and makes them more flexible. Further addition of AA caused the GMO hydrocarbon chain to be more solvated by the VE hydrocarbon chain and enabled additional migration of VE; hence a decrease in the hydrophobic melting temperature occurred (similar to tricaprylin). Increasing the amount of AA weakened the bonding between the GMO and water and created new bonds between AA and GMO and AA with water.
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Affiliation(s)
- Liron Bitan-Cherbakovsky
- Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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21
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Kogan A, Shalev DE, Raviv U, Aserin A, Garti N. Formation and Characterization of Ordered Bicontinuous Microemulsions. J Phys Chem B 2009; 113:10669-78. [DOI: 10.1021/jp901617g] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Anna Kogan
- Casali Institute of Applied Chemistry, The Institute of Chemistry, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Deborah E. Shalev
- Casali Institute of Applied Chemistry, The Institute of Chemistry, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Uri Raviv
- Casali Institute of Applied Chemistry, The Institute of Chemistry, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Abraham Aserin
- Casali Institute of Applied Chemistry, The Institute of Chemistry, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Nissim Garti
- Casali Institute of Applied Chemistry, The Institute of Chemistry, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
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Oil type effect on diclofenac solubilization in mixed nonionic surfactants microemulsions. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.01.032] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Effect of cosurfactant on ionic liquid solubilization capacity in cyclohexane/TX-100/1-butyl-3-methylimidazolium tetrafluoroborate microemulsions. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.11.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kogan A, Aserin A, Garti N. Improved solubilization of carbamazepine and structural transitions in nonionic microemulsions upon aqueous phase dilution. J Colloid Interface Sci 2007; 315:637-47. [PMID: 17825310 DOI: 10.1016/j.jcis.2007.06.087] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2007] [Revised: 06/23/2007] [Accepted: 06/29/2007] [Indexed: 11/24/2022]
Abstract
Solubilization capacity and structural transformations in nonionic microemulsions characterized by a large continuous isotropic region forming dilutable self-assembled nanodroplets containing solubilized carbamazepine, were studied along dilution lines 73 and 82 (70 and 80 wt% surfactant and 30 and 20 wt% of oil phase, respectively). The preparations were based on pharma-grade ingredients, water, R-(+)-limonene, ethanol, propylene glycol, and Tween 60. Solubilization capacity (SC) of the drug was dependent on the microstructure of the microemulsion and on the surfactant-to-oil phase weight ratio. The SC in the concentrate (reversed micelles) was 15 times higher than its solubility in the oil. Transition of the W/O microemulsion to a bicontinuous phase and to O/W droplets were indentified by electrical conductivity, viscosity, SAXS, and SD-NMR measurements. Once the system is diluted to 90 wt% aqueous phase, the SC is 10 and 16-fold higher, along dilution lines 73 and 82, respectively, than in pure water. Being solubilized, carbamazepine serves as a cosurfactant therefore it affects the curvatures of the microstructures and consequently the boundaries of the structural regions and the transition points between the different phases. Dilutable microemulsions are promising new carbamazepine vehicles for oral intake.
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Affiliation(s)
- Anna Kogan
- Casali Institute of Applied Chemistry, The Institute of Chemistry, E. Safra Campus, Givat Ram, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
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Mo C, Li X. Microstructure and structural transition in coconut oil microemulsion using semidifferential electroanalysis. J Colloid Interface Sci 2007; 312:355-62. [PMID: 17416387 DOI: 10.1016/j.jcis.2007.03.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2006] [Revised: 03/11/2007] [Accepted: 03/12/2007] [Indexed: 10/23/2022]
Abstract
The microemulsification in coconut oil/octadecyltrimethylammonium bromide/iso-pentanol/water system is investigated. The effect of iso-pentanol concentrations on the size of single-phase microemulsion region is discussed. It is found that the maximum microemulsion domain is obtained when cosurfactant (iso-pentanol)-to-surfactant (octadecyltrimethylammonium bromide) mass ratio is 1.5. The diffusion coefficients of ferrocene (electroactive probe) in microemulsion microenvironment are measured by semidifferential electroanalysis. The microstructure and structural transition from water-in-oil to oil-in-water microemulsions through a bicontinuous structure is examined. The results are found to be in agreement with that of conductivity measurements.
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Affiliation(s)
- Chunsheng Mo
- Department of Chemistry, Zhanjiang Normal University, Zhanjiang 524048, People's Republic of China.
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Abstract
Microemulsions are clear, stable, isotropic mixtures of oil, water, and surfactant, frequently in combination with a cosurfactant. Microemulsions have been intensively studied during the last decades by many scientists and technologists because of their great potential in many food and pharmaceutical applications. The use of microemulsions is advantageous not only due to the facile and low cost preparation, but also because of the improved bioavailability. The increased absorption of drugs in topical applications is attributed to enhancement of penetration through the skin by the carrier. Saturated and unsaturated fatty acids serving as an oil phase are frequently used as penetration enhancers. The most popular enhancer is oleic acid. Other permeation enhancers commonly used in transdermal formulations are isopropyl myristate, isopropyl palmitate, triacetin, isostearylic isostearate, R(+)-limonene and medium chain triglycerides. The most popular among the enhancing permeability surfactants are phospholipids that have been shown to enhance drug permeation in a different mode. l-alpha-phosphatidylcholine from egg yolk, l-alpha-phosphatidylcholine 60%, from soybean and dioleylphosphatidyl ethanolamine which are in a fluid state may diffuse into the stratum corneum and enhance dermal and transdermal drug penetration, while distearoylphosphatidyl choline which is in a gel-state has no such capability. Other very commonly used surfactants are Tween 20, Tween 80, Span 20, Azone, Plurol Isostearique and Plurol Oleique. As cosurfactants commonly serve short-chain alkanols such as ethanol and propylene glycol. Long-chain alcohols, especially 1-butanol, are known for their enhancing activity as well. Decanol was found to be an optimum enhancer among other saturated fatty alcohols that were examined (from octanol to myristyl alcohol). Many enhancers are concentration-dependent; therefore, optimal concentration for effective promotion should be determined. The delivery rate is dependent on the type of the drug, the structure and ingredients of the carrier, and on the character of the membrane in use. Each formulation should be examined very carefully, because every membrane alters the mechanism of penetration and can turn an enhancer to a retarder. Various potential mechanisms to enhance drug penetration through the skin include directly affecting the skin and modifying the formulation so the partition, diffusion, or solubility is altered. The combination of several enhancement techniques such as the use of iontophoresis with fatty acids leads to synergetic drug penetration and to decrease in skin toxicity. Selected studies of various microemulsions containing certain drugs including retinoic acid, 5-fluorouracil, triptolide, ascorbic acid, diclofenac, lidocaine, and prilocaine hydrochloride in transdermal formulations are presented in this review. In conclusion, microemulsions were found as an effective vehicle of the solubilization of certain drugs and as protecting medium for the entrapped of drugs from degradation, hydrolysis, and oxidation. It can also provide prolonged release of the drug and prevent irritation despite the toxicity of the drug. Yet, in spite of all the advantages the present formulations lack several key important characteristics such as cosmetic-permitted surfactants, free dilution in water capabilities, stability in the digestive tracts and sufficient solubilization capacity.
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Affiliation(s)
- Anna Kogan
- Casali Institute of Applied Chemistry, The Institute of Chemistry, Givat Ram Campus, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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