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de Toledo AMN, Silva NCC, Sato ACK, Picone CSF. A comprehensive study of physical, antimicrobial and emulsifying properties of self-assembled chitosan/lecithin complexes produced in aqueous media. FUTURE FOODS 2021. [DOI: 10.1016/j.fufo.2021.100083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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2
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Guo S, Lv M, Chen Y, Hou T, Zhang Y, Huang Z, Cao Y, Rogers M, Lan Y. Engineering water-induced ceramide/lecithin oleogels: understanding the influence of water added upon pre- and post-nucleation. Food Funct 2020; 11:2048-2057. [PMID: 32159192 DOI: 10.1039/c9fo02540e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A mixture of ceramide (CER) and lecithin (LEC) at specific ratios was capable of forming oleogels in sunflower oil triggered by adding a trace amount of water. It was noted that the addition of water at different temperatures (TW) resulted in different gelation behaviors and microstructures. To better illuminate the assembly mechanism at different TW, samples with water added at different TW (20 °C, 45 °C, 70 °C and 95 °C) were prepared. The viscoelastic properties, microstructures, and the crystal packing of these samples were investigated. It was observed that all samples prepared at TW of 20 °C and 95 °C formed gels, while most samples prepared at TW of 45 °C and 70 °C were too weak to form gels. Gels prepared at 95 °C were stronger but more fragile in texture compared to gels produced at 20 °C. The crystal morphology of gels drastically changed with TW. Spindle-shaped crystals were observed in gels prepared at low TW (20 °C), while gels prepared at high TW (95 °C) exhibited a network with packed oil droplets stabilized by lamellar shells together with fibrillar crystals in the bulk phase. X-ray diffractograms showed a different reflection peak (d-spacing of 14.5 Å) in gel prepared at 20 °C, compared to the d-spacing in oleogels with a single gelator (13.14 Å and 15.33 Å, respectively, for CER and LEC). Gel prepared at 95 °C showed two long-spacing characteristic peaks, which correspond to the characteristic peaks of CER gel (∼13 Å) and LEC gel (∼12 Å). Fourier transform infrared spectroscopy results indicated that the different gelation behaviors at different TW were mainly caused by vibrational changes in the amide bond of CER. Our hypothesized assembly mechanism can be concluded as: increasing TW resulted in the conversion of CER and LEC crystallization from co-assembly (TW = 20 °C) to self-sorting by individual gelators (TW = 95 °C). In this study, novel water-induced oleogels were produced by manipulating TW, and such information further assists the rational design of lipid-based healthy fat products.
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Affiliation(s)
- Shenglan Guo
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, P.R. China. and Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, P.R. China
| | - Muwen Lv
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, P.R. China. and Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, P.R. China
| | - Yunjiao Chen
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, P.R. China. and Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, P.R. China
| | - Tao Hou
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, P.R. China. and Research and Development Centre, Infinitus (China) Company Ltd., Guangzhou, Guangdong 510623, P.R. China
| | - Yumeng Zhang
- Monte Vista Christian School, Watsonville, CA 95076, USA
| | - Zhaohuai Huang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, P.R. China. and Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, P.R. China
| | - Yong Cao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, P.R. China. and Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, P.R. China
| | - Michael Rogers
- Department of Food Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Yaqi Lan
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, P.R. China. and Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, P.R. China
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Penttilä PA, Vierros S, Utriainen K, Carl N, Rautkari L, Sammalkorpi M, Österberg M. Phospholipid-Based Reverse Micelle Structures in Vegetable Oil Modified by Water Content, Free Fatty Acid, and Temperature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8373-8382. [PMID: 31141381 PMCID: PMC6750831 DOI: 10.1021/acs.langmuir.9b01135] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Colloidal assemblies of phospholipids in oil are known to be highly sensitive to changes in system composition and temperature. Despite the fundamental biological and high industrial relevance of these aggregates, the mechanisms behind the structural changes, especially in real oils, are not well understood. In this work, small-angle X-ray scattering (SAXS) was combined with molecular dynamics simulations to characterize the effects of oleic acid, water, and temperature on self-assembled structures formed by lecithin in rapeseed oil. SAXS showed that adding water to the mixtures caused the precipitation of liquid-crystalline phases with lamellar or hexagonal geometry. The combination of SAXS and molecular dynamics simulations revealed that stable spherical reverse micelles in oil had a core radius of about 2 nm and consisted of approximately 60 phospholipids centered around a core containing water and sugars. The presence of oleic acid improved the stability of reverse micelles against precipitation due to the increase in the water concentration in oil by allowing the reverse micelle cores to expand and accommodate more water. The shape and size of the reverse micelles changed at high temperatures, and irreversible elongation was observed, especially in the presence of oleic acid. The findings show the interdependency of the structure of the reverse micellar aggregates on system composition, in particular, oleic acid and water, as well as temperature. The revealed characteristics of the self-assembled structures have significance in understanding and tuning the properties of vegetable oil-based emulsions, food products, oil purification, and drug delivery systems.
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Affiliation(s)
- Paavo A. Penttilä
- Department
of Bioproducts and Biosystems and Department of Chemistry and Materials
Science, Aalto University, P.O. Box 16300, FI-00076 Espoo, Finland
- Large-Scale
Structures Group, Institut Laue-Langevin, 71 Avenue des Martyrs, F-38000 Grenoble, France
- E-mail: . Phone: +358 (0)50 476 6800
| | - Sampsa Vierros
- Department
of Bioproducts and Biosystems and Department of Chemistry and Materials
Science, Aalto University, P.O. Box 16300, FI-00076 Espoo, Finland
| | - Katja Utriainen
- Department
of Bioproducts and Biosystems and Department of Chemistry and Materials
Science, Aalto University, P.O. Box 16300, FI-00076 Espoo, Finland
| | - Nico Carl
- Large-Scale
Structures Group, Institut Laue-Langevin, 71 Avenue des Martyrs, F-38000 Grenoble, France
| | - Lauri Rautkari
- Department
of Bioproducts and Biosystems and Department of Chemistry and Materials
Science, Aalto University, P.O. Box 16300, FI-00076 Espoo, Finland
| | - Maria Sammalkorpi
- Department
of Bioproducts and Biosystems and Department of Chemistry and Materials
Science, Aalto University, P.O. Box 16300, FI-00076 Espoo, Finland
| | - Monika Österberg
- Department
of Bioproducts and Biosystems and Department of Chemistry and Materials
Science, Aalto University, P.O. Box 16300, FI-00076 Espoo, Finland
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Guo S, Song M, He X, Yang F, Cao Y, Rogers M, Lan Y. Water-induced self-assembly of mixed gelator system (ceramide and lecithin) for edible oil structuring. Food Funct 2019; 10:3923-3933. [DOI: 10.1039/c9fo00473d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In the presence of a small amount of water, CER and LEC were self-assembled to form oleogels in sunflower oil. This can be used to produce hard-stock fat replacers as well as for incorporating water-soluble nutrients into oil-based products.
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Affiliation(s)
- Shenglan Guo
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods
- College of Food Sciences
- South China Agricultural University
- Guangzhou
- P.R. China
| | - Mingyue Song
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods
- College of Food Sciences
- South China Agricultural University
- Guangzhou
- P.R. China
| | - Xiaoting He
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods
- College of Food Sciences
- South China Agricultural University
- Guangzhou
- P.R. China
| | - Fuyu Yang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods
- College of Food Sciences
- South China Agricultural University
- Guangzhou
- P.R. China
| | - Yong Cao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods
- College of Food Sciences
- South China Agricultural University
- Guangzhou
- P.R. China
| | - Michael Rogers
- Department of Food Science
- University of Guelph
- Guelph
- Canada
| | - Yaqi Lan
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods
- College of Food Sciences
- South China Agricultural University
- Guangzhou
- P.R. China
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Sautina NV, Gubaidullin AT, Galyametdinov YG. Phase Transformations in Self-Organized System Based on Lecithin. RUSS J APPL CHEM+ 2018. [DOI: 10.1134/s1070427217110106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Matjaž MG, Mravljak J, Rogač MB, Šentjurc M, Gašperlin M, Pobirk AZ. Microstructure evaluation of dermally applicable liquid crystals as a function of water content and temperature: Can electron paramagnetic resonance provide complementary data? Int J Pharm 2017; 533:431-444. [DOI: 10.1016/j.ijpharm.2017.05.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 03/22/2017] [Accepted: 05/16/2017] [Indexed: 10/19/2022]
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7
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Lehtinen OP, Nugroho RWN, Lehtimaa T, Vierros S, Hiekkataipale P, Ruokolainen J, Sammalkorpi M, Österberg M. Effect of temperature, water content and free fatty acid on reverse micelle formation of phospholipids in vegetable oil. Colloids Surf B Biointerfaces 2017; 160:355-363. [PMID: 28961543 DOI: 10.1016/j.colsurfb.2017.09.050] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/28/2017] [Accepted: 09/21/2017] [Indexed: 10/18/2022]
Abstract
The self-assembly of phospholipids in oil, specifically lecithin in rapeseed oil, was investigated by combining experimental and computational methods The influence of temperature, water, and free fatty acids on the onset of lecithin aggregation in the rapeseed oil was determined using the 7,7,8,8 -tetracyanoquinodimethane dye (TCNQ) solubilization method and the size and shape of the self-assembled lecithin structures were investigated by small-angle X-ray scattering and cryogenic transmission electron microscopy. In the absence of excess water in the system (0.03wt-% water in oil), stable cylindrical lecithin reverse micelles were observed above the critical micelle concentration (CMC). Comparing the aggregation response in room temperature and at 70°C revealed that CMC decreased with increasing temperature. Furthermore, already a modest amount of added water (0.3wt-% water in oil) was sufficient to induce the formation of lamellar lecithin structures, that phase separated from the oil. In low water content, oleic acid suppressed the formation of lecithin reverse micelles whereas in the presence of more water, the oleic acid stabilized the reverse micelles. Consequently, more water was needed to induce phase separation in the presence of oleic acid. Molecular dynamics simulations indicated that the stabilizing effect of oleic acid resulted from oleic acid enhancing phospholipid solubilization in the oil by forming a solvating shell around the phosphate head group. The findings showed that the response of the mixed surfactant system is a delicate interplay of the different components and variables. The significance of the observations is that multiple parameters need to be controlled for desired system response, for example towards vegetable oil purification or phospholipid based microemulsions.
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Affiliation(s)
- Olli-Pekka Lehtinen
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, 00076 Aalto, Finland
| | - Robertus Wahyu N Nugroho
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, 00076 Aalto, Finland
| | - Tuula Lehtimaa
- NESTE Oyj, Technology Centre, Kilpilahti, 06101 Porvoo, Finland
| | - Sampsa Vierros
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, 00076 Aalto, Finland
| | - Panu Hiekkataipale
- Department of Applied Physics, School of Science, Aalto University, 00076 Aalto, Finland
| | - Janne Ruokolainen
- Department of Applied Physics, School of Science, Aalto University, 00076 Aalto, Finland
| | - Maria Sammalkorpi
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, 00076 Aalto, Finland
| | - Monika Österberg
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, 00076 Aalto, Finland
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8
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Atyaksheva LF, Ivanova II, Ivanova MV, Tarasevich BN, Fedosov DA. Adsorption of lipids on silicalite-1. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2017. [DOI: 10.1134/s0036024417050053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Riehm DA, Rokke DJ, Paul PG, Lee HS, Vizanko BS, McCormick AV. Dispersion of oil into water using lecithin-Tween 80 blends: The role of spontaneous emulsification. J Colloid Interface Sci 2017; 487:52-59. [DOI: 10.1016/j.jcis.2016.10.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 10/03/2016] [Accepted: 10/04/2016] [Indexed: 12/23/2022]
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10
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Esposito E, Ravani L, Mariani P, Puglia C, Mazzitelli S, Huang N, Cortesi R, Nastruzzi C. Gelified reverse micellar dispersions as percutaneous formulations. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2015.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Riehm DA, Neilsen JE, Bothun GD, John VT, Raghavan SR, McCormick AV. Efficient dispersion of crude oil by blends of food-grade surfactants: Toward greener oil-spill treatments. MARINE POLLUTION BULLETIN 2015; 101:92-97. [PMID: 26589641 DOI: 10.1016/j.marpolbul.2015.11.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/03/2015] [Accepted: 11/05/2015] [Indexed: 05/23/2023]
Abstract
Effectiveness of oil spill dispersants containing lecithin/Tween 80 (L/T) blends in ethanol was measured as a function of L:T ratio, surfactant:solvent ratio, solvent composition, and dispersant:oil ratio (DOR) using baffled flask dispersion effectiveness tests. Optimal L:T ratios are between 60:40 and 80:20 (w/w); at higher L:T ratios, effectiveness is limited by high interfacial tension, while at lower L:T ratios, insufficient lecithin is present to form a well-packed monolayer at an oil-water interface. These optimal L:T ratios retain high effectiveness at low DOR: 80:20 (w/w) L:T dispersant is 89% effective at 1:25 DOR (v/v) and 77% effective at 1:100 DOR (v/v). Increasing surfactant:solvent ratio increases dispersant effectiveness even when DOR is proportionally reduced to keep total surfactant concentration dosed into the oil constant. Replacing some of the ethanol with octane or octanol also increases dispersant effectiveness, suggesting that ethanol's hydrophilicity lowers dispersant-oil miscibility, and that more hydrophobic solvents would increase effectiveness.
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Affiliation(s)
- David A Riehm
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, United States
| | - John E Neilsen
- Department of Chemical Engineering, University of Rhode Island, 16 Greenhouse Road, Kingston, RI 02881, United States
| | - Geoffrey D Bothun
- Department of Chemical Engineering, University of Rhode Island, 16 Greenhouse Road, Kingston, RI 02881, United States
| | - Vijay T John
- Department of Chemical & Biomolecular Engineering, Tulane University, New Orleans, LA 70118, United States
| | - Srinivasa R Raghavan
- Department of Chemical & Biomolecular Engineering, University of Maryland, College Park, MD 20742, United States
| | - Alon V McCormick
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, United States.
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12
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Murashova NM, Yurtov EV. Lecithin organogels as prospective functional nanomaterial. ACTA ACUST UNITED AC 2015. [DOI: 10.1134/s199507801504014x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Derkach SR. Interfacial layers of complex-forming ionic surfactants with gelatin. Adv Colloid Interface Sci 2015; 222:172-98. [DOI: 10.1016/j.cis.2014.05.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 11/30/2022]
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14
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Zhang J, Yu K, Yang Q, Bao Z, Zhang Z, Yang Y, Ren Q, Xing H. Selective separation of zwitterionic phospholipid homologues with functional ionic liquids as extractants. RSC Adv 2015. [DOI: 10.1039/c5ra14202d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
A novel extractive method using hydroxyl-functional ILs as extractants was developed for the separation of zwitterionic phospholipid homologues.
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Affiliation(s)
- Jingzhu Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Kun Yu
- Department of Chemical and Biological Engineering
- University of Buffalo
- the State University of New York (SUNY)
- Buffalo
- USA
| | - Qiwei Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Zongbi Bao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Zhiguo Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Yiwen Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Qilong Ren
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Huabin Xing
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
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15
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Mahire RR, Agrawal DS, Patil DK, More DH. Fabrication of organogels achieved by prodrug-based organogelators of ketoprofen. RSC Adv 2014. [DOI: 10.1039/c4ra03688c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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16
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Derkach SR. WITHDRAWN: Interfacial layers of complex-forming ionic surfactants with gelatin. Adv Colloid Interface Sci 2014:S0001-8686(14)00194-8. [PMID: 24997869 DOI: 10.1016/j.cis.2014.05.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 05/14/2014] [Indexed: 10/25/2022]
Abstract
The Publisher regrets that this article is an accidental duplication of an article that has already been published, http://dx.doi.org/ 10.1016/j.cis.2014.05.001. The duplicate article has therefore been withdrawn.
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Affiliation(s)
- Svetlana R Derkach
- Murmansk State Technical University, 13, Sportivnaya str., Murmansk 13183010, Russia.
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Moysan E, González-Fernández Y, Lautram N, Béjaud J, Bastiat G, Benoit JP. An innovative hydrogel of gemcitabine-loaded lipid nanocapsules: when the drug is a key player of the nanomedicine structure. SOFT MATTER 2014; 10:1767-1777. [PMID: 24652455 DOI: 10.1039/c3sm52781f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new method to form a nanoparticle-structured hydrogel is reported; it is based on the drug being loaded into the nanoparticles to form a solid structure. A lipophilic form of gemcitabine (modified lauroyl), an anti-cancer drug, was encapsulated in lipid nanocapsules (LNCs), using a phase-inversion temperature process. A gel was formed spontaneously, depending on the LNC concentration. The drug loading, measured with total entrapment efficiency, and the rheological properties of the gel were assessed. Physical studies (surface tension measurements) showed that modified gemcitabine was localised at the oil-water interface of the LNC, and that the gemcitabine moieties of the prodrug were exposed to the water phase. This particular assembly promoted inter-LNC interactions via hydrogen bonds between gemcitabine moieties that led to an LNC gel structure in water, without a matrix, like a tridimensional pearl necklace. Dilution of the gel produced a gemcitabine-loaded LNC suspension in water, and these nanoparticles presented cytotoxic activity to various cancer cell lines to a greater degree than the native drug. Finally, the syringeability of the formulation was successfully tested and perspectives of its use as a nanomedicine (intratumoural or subcutaneous injection) can be foreseen.
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Affiliation(s)
- Elodie Moysan
- LUNAM Université - Micro et Nanomédecines Biomimétiques, Université d'Angers - UMR_S1066 (MINT), IBS-CHU Angers, 4 rue Larrey, F-49933 Angers, France.
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19
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Nikiforidis CV, Scholten E. Self-assemblies of lecithin and α-tocopherol as gelators of lipid material. RSC Adv 2014. [DOI: 10.1039/c3ra46584e] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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21
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Gosenca M, Bešter-Rogač M, Gašperlin M. Lecithin based lamellar liquid crystals as a physiologically acceptable dermal delivery system for ascorbyl palmitate. Eur J Pharm Sci 2013; 50:114-22. [DOI: 10.1016/j.ejps.2013.04.029] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Revised: 04/08/2013] [Accepted: 04/25/2013] [Indexed: 10/26/2022]
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22
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Localization and reactivity of a hydrophobic solute in lecithin and caseinate stabilized solid lipid nanoparticles and nanoemulsions. J Colloid Interface Sci 2013; 394:20-5. [DOI: 10.1016/j.jcis.2012.12.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 12/12/2012] [Accepted: 12/13/2012] [Indexed: 11/20/2022]
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23
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Electron microscopy of nanoemulsions: An essential tool for characterisation and stability assessment. Micron 2012; 43:85-103. [DOI: 10.1016/j.micron.2011.07.014] [Citation(s) in RCA: 182] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 07/18/2011] [Accepted: 07/19/2011] [Indexed: 12/12/2022]
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24
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Crystalline titania nanoparticles synthesized in nonpolar Lα lecithin liquid-crystalline media in one stage at ambient conditions. Colloids Surf B Biointerfaces 2011; 87:203-8. [PMID: 21700435 DOI: 10.1016/j.colsurfb.2011.04.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2011] [Accepted: 04/30/2011] [Indexed: 11/20/2022]
Abstract
High-temperature modification of titania in the form of nanoplatelets is synthesized fast in one step at ambient conditions without any additional treatment like aging or calcination. Lecithin, which is the main component of lipid matrix of biological membranes, is first used as a structure-driven template. It is demonstrated that this natural surfactant can self-organize into lamellar L(α) mesophase when small amounts of water are admixed in its solution in nonpolar solvent. The water locating mainly in lecithin polar region as hydration shell at this concentration triggers the hydrolysis-condensation reactions after the precursor addition that results in instantaneous titania formation in the form of crystalline nanoparticles. Planar lamellar sheets serve as the template specifying its crystallinity.
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Klang V, Matsko N, Raupach K, El-Hagin N, Valenta C. Development of sucrose stearate-based nanoemulsions and optimisation through γ-cyclodextrin. Eur J Pharm Biopharm 2011; 79:58-67. [PMID: 21277976 DOI: 10.1016/j.ejpb.2011.01.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 01/13/2011] [Accepted: 01/13/2011] [Indexed: 12/12/2022]
Abstract
Nanoemulsions aimed at dermal drug delivery are usually stabilised by natural lecithins. However, lecithin has a high tendency towards self-aggregation and is prone to chemical degradation. Therefore, the aim of this study was to develop nanoemulsions with improved structure and long-term stability by employing a natural sucrose ester mixture as sole surfactant. A thorough comparison between the novel sucrose stearate-based nanoemulsions and corresponding lecithin-based nanoemulsions revealed that the sucrose ester is superior in terms of emulsifying efficiency, droplet formation as well as physical and chemical stability. The novel formulations exhibited a remarkably homogeneous structure in cryo TEM investigations, as opposed to the variable structure observed for lecithin-based systems. The in vitro skin permeation rates of lipophilic drugs from sucrose stearate nanoemulsions were comparable to those obtained with their lecithin-based counterparts. Furthermore, it was observed that addition of γ-cyclodextrin led to enhanced skin permeation of the steroidal drug fludrocortisone acetate from 9.99±0.46 to 55.10±3.67 μg cm(-2) after 24 h in the case of sucrose stearate-based systems and from 9.98±0.64 to 98.62±24.89 μg cm(-2) after 24 h in the case of lecithin-based systems. This enhancement effect was significantly stronger in formulations based on lecithin (P<0.05), which indicates that synergistic mechanisms between the surfactant and the cyclodextrin are involved. Cryo TEM images suggest that the cyclodextrin is incorporated into the interfacial film, which might alter drug release rates and improve the droplet microstructure.
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Affiliation(s)
- Victoria Klang
- University of Vienna, Department of Pharmaceutical Technology and Biopharmaceutics, Vienna, Austria.
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Klang V, Matsko N, Zimmermann AM, Vojnikovic E, Valenta C. Enhancement of stability and skin permeation by sucrose stearate and cyclodextrins in progesterone nanoemulsions. Int J Pharm 2010; 393:152-60. [DOI: 10.1016/j.ijpharm.2010.04.029] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2010] [Revised: 04/20/2010] [Accepted: 04/21/2010] [Indexed: 01/05/2023]
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Vintiloiu A, Leroux JC. Organogels and their use in drug delivery--a review. J Control Release 2007; 125:179-92. [PMID: 18082283 DOI: 10.1016/j.jconrel.2007.09.014] [Citation(s) in RCA: 496] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2007] [Accepted: 09/27/2007] [Indexed: 10/22/2022]
Abstract
Organogels are semi-solid systems, in which an organic liquid phase is immobilized by a three-dimensional network composed of self-assembled, intertwined gelator fibers. Despite their majoritarily liquid composition, these systems demonstrate the appearance and rheological behaviour of solids. Investigative research pertaining to these systems has only picked up speed in the last few decades. Consequently, many burning questions regarding organogel systems, such as the specific molecular requirements guaranteeing gelation, still await definite answers. Nonetheless, the application of different organogel systems to various areas of interest has been quick to follow their discoveries. Unfortunately, their use in drug delivery is still quite limited by the scarce toxicology information available on organogelators, as well as by the few pharmaceutically-accepted solvents used in gel systems. This review aims at providing a global view of organogels, with special emphasis on the interplay between the gelator's structural characteristics and the ensuing intermolecular interactions. A subsequent focus is placed on the application of organogels as drug delivery platforms for active agent administration via diverse routes such as transdermal, oral, and parenteral.
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Affiliation(s)
- Anda Vintiloiu
- Faculty of Pharmacy, University of Montreal, P.O. Box 6128, Downtown Station, Montreal (QC), Canada H3C 3J7
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Kumar R, Katare OP. Lecithin organogels as a potential phospholipid-structured system for topical drug delivery: a review. AAPS PharmSciTech 2005; 6:E298-310. [PMID: 16353989 PMCID: PMC2750543 DOI: 10.1208/pt060240] [Citation(s) in RCA: 143] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The purpose of this review is to give an insight into the considerable potential of lecithin organogels (LOs) in the applications meant for topical drug delivery. LOs are clear, thermodynamically stable, viscoelastic, and biocompatible jelly-like phases, chiefly composed of hydrated phospholipids and appropriate organic liquid. These systems are currently of interest to the pharmaceutical scientist because of their structural and functional benefits. Several therapeutic agents have been formulated as LOs for their facilitated transport through topical route (for dermal or transdermal effect), with some very encouraging results. The improved topical drug delivery has mainly been attributed to the biphasic drug solubility, the desired drug partitioning, and the modification of skin barrier function by the organogel components. Being thermodynamically stable, LOs are prepared by spontaneous emulsification and therefore possess prolonged shelf life. The utility of this novel matrix as a topical vehicle has further increased owing to its very low skin irritancy potential. Varied aspects of LOs viz formation, composition, phase behavior, and characterization have been elaborated, including a general discussion on the developmental background. Besides a comprehensive update on the topical applications of lecithin organogels, the review also includes a detailed account on the mechanistics of organogelling.
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Affiliation(s)
- Rajiv Kumar
- University Institute of Pharmaceutical Sciences, Panjab University Campus, Sector-14, Chandigarh, India
| | - Om Prakash Katare
- University Institute of Pharmaceutical Sciences, Panjab University Campus, Sector-14, Chandigarh, India
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Shchipunov YA, Dürrschmidt T, Hoffmann H. Electrorheological Effects in Lecithin Organogels with Water and Glycerol. J Colloid Interface Sci 1999; 212:390-401. [PMID: 10092369 DOI: 10.1006/jcis.1998.6046] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effect of an external electric field on ternary mixtures consisting of lecithin, n-decane, and small amounts of polar additives (water or glycerol) has been studied by oscillating rheology, polarizing microscopy, and electric birefringence. It is shown that an electric field that is applied induces a so-called electrorheological (ER) effect, i.e., an increase in the viscosity and dynamic shear moduli of all the examined mixtures. The ER effect is absent in solutions of nonoverlapping micelles. The electric field causes the formation of fiber-like structures in the interelectrode gap. The ER effect becomes evident at a critical field of about 40 and 100 V/mm for water- and glycerol-containing organogels, respectively. In the latter case, a region of the reproducible and stable ER effect is extended up to 1700 V/mm, which is 3-4 times greater than that observed in the jelly-like phases with water. The buildup, as followed from birefringent measurements, includes fast and slow processes. Those correspond to both the local motions of parts of micellar chains and the restructuring of the whole network under the action of an external electric field. The ER response depends on the molar ratio of the polar additives to lecithin. Diagrams describing the behavior of ternary mixtures under the electric field have been constructed. They differ for water- and glycerol-containing organogels. The dependence of the stable ER effects on the molar ratio of glycerol to lecithin has a maximum in the vicinity of the phase separation of the homogeneous organogel, whereas for water-containing systems there is a gradual increase up to and including mixtures with the solid precipitate. A new rheological regime has been first established for solutions of polymer-like micelles. This feature is the square-root scaling of the dynamic moduli with the frequency. Such a scaling is inherent in polymers. A possible mechanism is considered, basing on the ordering of cylindrical micelles under the action of an external electric field. Copyright 1999 Academic Press.
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Affiliation(s)
- YA Shchipunov
- Far East Department, Russian Academy of Sciences, Vladivostok, 690022, Russia
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Shchipunov YA, Shumilina EV, Ulbricht W, Hoffmann H. The Branching of Reversed Polymer-like Micelles of Lecithin by Sugar-Containing Surfactants. J Colloid Interface Sci 1999; 211:81-88. [PMID: 9929437 DOI: 10.1006/jcis.1998.5927] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effects of n-dodecyl-beta-D-glucopyranoside and n-dodecyl-beta-D-lactobionamide on the formation and rheological behavior of lecithin organogels consisting of reverse long cylindrical (polymer-like) micelles were studied by oscillating rheology. The alkylglucoside addition results in a decrease of the zero shear viscosity and plateau modulus of the organogel, whereas the lactobionamide derivative causes an increase of these parameters. Despite their different effects, both the sugar-containing surfactants change the scaling exponents of the zero shear viscosity, plateau modulus, and terminal relaxation time in a similar way. Before their addition, the scaling behavior is in a satisfactory agreement with that expected from a model by Cates who considered polymer-like micelles as linear and flexible. In mixtures of lecithin with n-dodecyl-beta-D-glucopyranoside or n-dodecyl-beta-D-lactobionamide, the power law exponents are close to the theoretical predictions that follow from a model for branched (connected) cylindrical micelles. It was concluded that both the sugar-containing surfactants bring about a change in the growing mechanism of the lecithin micelles in nonpolar media. A molecular model is considered. This takes into account the formation of hydrogen bonds between amphiphile molecules, occurrence of packing constraints, and a change of excess free energy of the micellar endings. Copyright 1999 Academic Press.
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