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Bahloul B, Ben Bnina E, Hamdi A, Castillo Henríquez L, Baccar D, Kalboussi N, Abbassi A, Mignet N, Flamini G, Vega-Baudrit JR. Investigating the Wound-Healing Potential of a Nanoemulsion-Gel Formulation of Pituranthos tortuosus Essential Oil. Gels 2024; 10:155. [PMID: 38534573 DOI: 10.3390/gels10030155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/08/2024] [Accepted: 02/13/2024] [Indexed: 03/28/2024] Open
Abstract
This study explores a nanoemulsion (NE)-based gel incorporating Tunisian Pituranthos tortuosus essential oil, with a focus on its wound-healing potential. The essential oil, extracted via hydrodistillation, underwent GC-MS analysis for compositional verification. The physicochemical characterization included dynamic light scattering (DLS), transmission electron microscopy (TEM), zeta potential measurement, pH, and viscosity. The gelification of the NE facilitated topical application. The results revealed an average extraction yield of 0.45% and identified 38 compounds in the essential oil. The NE exhibited a particle size of 27 ± 0.4 nm, a polydispersity index (PDI) of 0.3, and a zeta potential of -22.8 ± 1.4 mV. The stability of the gelified preparation was confirmed through thermodynamic stability studies, TEM observations, and zeta and size results. In vivo experiments confirmed significant wound-healing effects, highlighting the promising role of the NE-based gel in healthcare advancements. This research underscores the potential of novel phyto-based delivery systems in wound care.
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Affiliation(s)
- Badr Bahloul
- Drug Development Laboratory LR12ES09, Faculty of Pharmacy, University of Monastir, Monastir 5000, Tunisia
| | - Enis Ben Bnina
- LR21AGR03-Production and Protection for a Sustainable Horticulture (2PHD), Regional Research Centre on Horticulture and Organic Agriculture, IRESA, University of Sousse, Chott Mariem 4042, Tunisia
| | - Assia Hamdi
- Drug Development Laboratory LR12ES09, Faculty of Pharmacy, University of Monastir, Monastir 5000, Tunisia
| | - Luis Castillo Henríquez
- Chemical and Biological Technologies for Health Group (UTCBS), Université Paris Cité, 75006 Paris, France
| | - Dhaou Baccar
- Drug Development Laboratory LR12ES09, Faculty of Pharmacy, University of Monastir, Monastir 5000, Tunisia
| | - Nesrine Kalboussi
- Drug Development Laboratory LR12ES09, Faculty of Pharmacy, University of Monastir, Monastir 5000, Tunisia
| | - Aïmen Abbassi
- Research Unit "Natural Bioactive Substances and Biotechnology" UR17ES49, Pharmacognosy Laboratory, College of Pharmacy of Monastir, University of Monastir, Monastir 5000, Tunisia
| | - Nathalie Mignet
- Chemical and Biological Technologies for Health Group (UTCBS), Université Paris Cité, 75006 Paris, France
| | - Guido Flamini
- Dipartimento di Farmacia, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - José Roberto Vega-Baudrit
- National Nanotechnology Laboratory (LANOTEC), National Center for High Technology (CeNAT), San José 1174-1200, Costa Rica
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2
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Gawin-Mikołajewicz A, Nawrot U, Malec KH, Krajewska K, Nartowski KP, Karolewicz BL. The Effect of High-Pressure Homogenization Conditions on the Physicochemical Properties and Stability of Designed Fluconazole-Loaded Ocular Nanoemulsions. Pharmaceutics 2023; 16:11. [PMID: 38276489 PMCID: PMC10818809 DOI: 10.3390/pharmaceutics16010011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/04/2023] [Accepted: 12/06/2023] [Indexed: 01/27/2024] Open
Abstract
The growing interest in high-energy emulsification is a result of its scalability, which is important from an industrial perspective and allows for a more reproducible and efficient production of pharmaceutical formulations. The aim of this study was to evaluate the effect of composition, mainly a fixed surfactant/cosurfactant (Smix) ratio, their concentration, and the parameters of high-pressure homogenization (HPH) processing on the quality and stability of ophthalmic fluconazole-loaded nanoemulsions. After a physicochemical analysis of nanoemulsions containing 20% w/w of oil, as optimal conditions for the HPH process, three cycles at a pressure of 1000 bar were established, obtaining formulations with an average droplet diameter size in the range of 80.63-129.68 nm and PDI values below 0.25. While it was expected that an increasing cosurfactant concentration decreased the droplet size, in the case of formulations containing Tween 20 and 10% w/w of cosurfactants, "over-processing" was observed, identified by the droplet size and polydispersity index increase. Consecutively, the selected formulations were evaluated for in vitro drug release in Franz's cell, antifungal activity, and 30-day stability using NMR spectroscopy. An antifungal activity test showed no significant difference in the antifungal activity between optimal fluconazole-loaded nanoemulsions and a 0.3% aqueous drug solution, but previously, research showed that prepared formulations were characterized by a higher viscosity and satisfactory prolonged release compared to a control. In a 30-day stability study, it was observed that higher HLB values of the used surfactants decreased the stability of the formulations in the following order: Kolliphor EL, Tween 80, Tween 20. The NMR spectra confirmed that Kolliphor EL-based formulations ensured the higher stability of the nanoemulsion composition in comparison to Tween 80 and a better stabilizing effect of propylene glycol as a cosurfactant in comparison to PEG 200. Therefore, the optimization of HPH technology should be focused on the selection of Smix and the Smix:oil ratio in order to prepare stable formulations of high quality.
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Affiliation(s)
- Agnieszka Gawin-Mikołajewicz
- Department of Drug Form Technology, Wroclaw Medical University, 211A Borowska Str., 50-556 Wroclaw, Poland; (K.H.M.); (K.K.); (K.P.N.); (B.L.K.)
| | - Urszula Nawrot
- Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, 211A Borowska Str., 50-556 Wroclaw, Poland;
| | - Katarzyna Hanna Malec
- Department of Drug Form Technology, Wroclaw Medical University, 211A Borowska Str., 50-556 Wroclaw, Poland; (K.H.M.); (K.K.); (K.P.N.); (B.L.K.)
| | - Karolina Krajewska
- Department of Drug Form Technology, Wroclaw Medical University, 211A Borowska Str., 50-556 Wroclaw, Poland; (K.H.M.); (K.K.); (K.P.N.); (B.L.K.)
| | - Karol Przemysław Nartowski
- Department of Drug Form Technology, Wroclaw Medical University, 211A Borowska Str., 50-556 Wroclaw, Poland; (K.H.M.); (K.K.); (K.P.N.); (B.L.K.)
| | - Bożena Lucyna Karolewicz
- Department of Drug Form Technology, Wroclaw Medical University, 211A Borowska Str., 50-556 Wroclaw, Poland; (K.H.M.); (K.K.); (K.P.N.); (B.L.K.)
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3
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Wu M, He X, Feng D, Li H, Han D, Li Q, Zhao B, Li N, Liu T, Wang J. The Emulsifying Properties, In Vitro Digestion Characteristics and Storage Stability of High-Pressure-Homogenization-Modified Dual-Protein-Based Emulsions. Foods 2023; 12:4141. [PMID: 38002198 PMCID: PMC10670896 DOI: 10.3390/foods12224141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/09/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
The droplet size, zeta potential, interface protein adsorption rate, physical stability and microrheological properties of high-pressure-homogenization (HPH)-modified, dual-protein-based whey-soy (whey protein isolate-soy protein isolate) emulsions containing different oil phase concentrations (5%, 10% and 15%; w/w) were compared in this paper. The in vitro digestion characteristics and storage stability of the dual-protein emulsions before and after HPH treatment were also explored. The results show that with an increase in the oil phase concentration, the droplet size and interface protein adsorption rate of the untreated dual-protein emulsions increased, while the absolute value of the zeta potential decreased. When the oil phase concentration was 10% (w/w), HPH treatment could significantly reduce the droplet size of the dual-protein emulsion, increase the interface protein adsorption rate, and improve the elasticity of the emulsion. Compared with other oil phase concentrations, the physical stability of the dual-protein emulsion containing a 10% (w/w) oil phase concentration was the best, so the in vitro digestion characteristics and storage stability of the emulsions were studied. Compared with the control group, the droplet size of the HPH-modified dual-protein emulsion was significantly reduced after gastrointestinal digestion, and the in vitro digestibility and release of free amino groups both significantly increased. The storage stability results show that the HPH-modified dual-protein emulsion showed good stability under different storage methods, and the storage stability of the steam-sterilized dual-protein emulsion stored at room temperature was the best. These results provide a theoretical basis for the development of new nutritional and healthy dual-protein liquid products.
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Affiliation(s)
- Meishan Wu
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Xiaoye He
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Duo Feng
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Hu Li
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Di Han
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Qingye Li
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Boya Zhao
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Na Li
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Tianxin Liu
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Jing Wang
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- The Key Lab of Food Resources Monitoring and Nutrition Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
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Naser SS, Singh D, Preetam S, Kishore S, Kumar L, Nandi A, Simnani FZ, Choudhury A, Sinha A, Mishra YK, Suar M, Panda PK, Malik S, Verma SK. Posterity of nanoscience as lipid nanosystems for Alzheimer's disease regression. Mater Today Bio 2023; 21:100701. [PMID: 37415846 PMCID: PMC10320624 DOI: 10.1016/j.mtbio.2023.100701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 06/08/2023] [Accepted: 06/10/2023] [Indexed: 07/08/2023] Open
Abstract
Alzheimer's disease (AD) is a type of dementia that affects a vast number of people around the world, causing a great deal of misery and death. Evidence reveals a relationship between the presence of soluble Aβ peptide aggregates and the severity of dementia in Alzheimer's patients. The BBB (Blood Brain Barrier) is a key problem in Alzheimer's disease because it prevents therapeutics from reaching the desired places. To address the issue, lipid nanosystems have been employed to deliver therapeutic chemicals for anti-AD therapy in a precise and targeted manner. The applicability and clinical significance of lipid nanosystems to deliver therapeutic chemicals (Galantamine, Nicotinamide, Quercetin, Resveratrol, Curcumin, HUPA, Rapamycin, and Ibuprofen) for anti-AD therapy will be discussed in this review. Furthermore, the clinical implications of the aforementioned therapeutic compounds for anti-AD treatment have been examined. Thus, this review will pave the way for researchers to fashion therodiagnostics approaches based on nanomedicine to overcome the problems of delivering therapeutic molecules across the blood brain barrier (BBB).
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Affiliation(s)
- Shaikh Sheeran Naser
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Dibyangshee Singh
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Subham Preetam
- Institute of Advanced Materials, IAAM, Gammalkilsvägen 18, 59053 Ulrika, Sweden
| | - Shristi Kishore
- Amity Institute of Biotechnology, Amity University Jharkhand, Ranchi, Jharkhand 834001, India
| | - Lamha Kumar
- School of Biology, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala 695551, India
| | - Aditya Nandi
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Faizan Zarreen Simnani
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Anmol Choudhury
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Adrija Sinha
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Yogendra Kumar Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alison 2, 6400 Sønderborg, Denmark
| | - Mrutyunjay Suar
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Pritam Kumar Panda
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - Sumira Malik
- School of Biology, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala 695551, India
| | - Suresh K. Verma
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
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5
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Jin H, Ma Q, Dou T, Jin S, Jiang L. Raman Spectroscopy of Emulsions and Emulsion Chemistry. Crit Rev Anal Chem 2023:1-13. [PMID: 37393560 DOI: 10.1080/10408347.2023.2228411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Emulsions are dispersed systems widely used in various industries. In recent years, Raman spectroscopy (RS), as a spectroscopic technique, has gained much attention for measuring and monitoring emulsions. In this review, we explore the use of RS on emulsion structures and emulsification, important reactions that use emulsions such as emulsion polymerization, catalysis and cascading reactions, as well as various applications of emulsions. We explore how RS is used in emulsions, reactions and applications. RS is a powerful and versatile tool for studying emulsions, but there are also challenges in using RS to monitor emulsion processes, especially if they are rapid or volatile. We also explore these challenges and difficulties, as well as possible designs that can be used to overcome them.
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Affiliation(s)
- Huaizhou Jin
- Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou, China
| | - Qifei Ma
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou China
- Key Lab of Zhejiang Province on Modern Measurement Technology and Instruments, Hangzhou, China
| | - Tingting Dou
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou China
- Key Lab of Zhejiang Province on Modern Measurement Technology and Instruments, Hangzhou, China
| | - Shangzhong Jin
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou China
- Key Lab of Zhejiang Province on Modern Measurement Technology and Instruments, Hangzhou, China
| | - Li Jiang
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou China
- Key Lab of Zhejiang Province on Modern Measurement Technology and Instruments, Hangzhou, China
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6
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Hunter SJ, Armes SP. Sterically Stabilized Diblock Copolymer Nanoparticles Enable Efficient Preparation of Non-Aqueous Pickering Nanoemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:7361-7370. [PMID: 37186666 DOI: 10.1021/acs.langmuir.3c00464] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
We report the first example of a non-aqueous Pickering nanoemulsion, which comprises glycerol droplets dispersed in mineral oil. The droplet phase is stabilized by hydrophobic sterically stabilized poly(lauryl methacrylate)-poly(benzyl methacrylate) nanoparticles which are prepared directly in mineral oil using polymerization-induced self-assembly. First, a glycerol-in-mineral oil Pickering macroemulsion with a mean droplet diameter of 2.1 ± 0.9 μm is prepared via high-shear homogenization using excess nanoparticles as an emulsifier. Then, this precursor macroemulsion is subjected to high-pressure microfluidization (a single pass at an applied pressure of 20,000 psi) to produce glycerol droplets of approximately 200-250 nm diameter. Transmission electron microscopy studies indicate preservation of the distinctive superstructure produced by nanoparticle adsorption at the glycerol/mineral oil interface, thus confirming the Pickering nature of the nanoemulsion. Glycerol is sparingly soluble in mineral oil, thus such nanoemulsions are rather susceptible to destabilization via Ostwald ripening. Indeed, substantial droplet growth occurs within 24 h at 20 °C, as judged by dynamic light scattering. However, this problem can be suppressed by dissolving a non-volatile solute (sodium iodide) in glycerol prior to formation of the nanoemulsion. This reduces diffusional loss of glycerol molecules from the droplets, with analytical centrifugation studies indicating much better long-term stability for such Pickering nanoemulsions (up to 21 weeks). Finally, the addition of just 5% water to the glycerol phase prior to emulsification enables the refractive index of the droplet phase to be matched to that of the continuous phase, leading to relatively transparent nanoemulsions.
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Affiliation(s)
- Saul J Hunter
- Department of Chemistry, Brook Hill, University of Sheffield, Dainton Building, Sheffield, South Yorkshire S3 7HF, U.K
| | - Steven P Armes
- Department of Chemistry, Brook Hill, University of Sheffield, Dainton Building, Sheffield, South Yorkshire S3 7HF, U.K
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Amrillah T, Abdullah CAC, Hermawan A, Sari FNI, Alvani VN. Towards Greener and More Sustainable Synthesis of MXenes: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4280. [PMID: 36500902 PMCID: PMC9793760 DOI: 10.3390/nano12234280] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/24/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
The unique properties of MXenes have been deemed to be of significant interest in various emerging applications. However, MXenes provide a major drawback involving environmentally harmful and toxic substances for its general fabrication in large-scale production and employing a high-temperature solid-state reaction followed by selective etching. Meanwhile, how MXenes are synthesized is essential in directing their end uses. Therefore, making strategic approaches to synthesize greener, safer, more sustainable, and more environmentally friendly MXenes is imperative to commercialize at a competitive price. With increasing reports of green synthesis that promote advanced technologies and non-toxic agents, it is critical to compile, summarize, and synthesize the latest development of the green-related technology of MXenes. We review the recent progress of greener, safer, and more sustainable MXene synthesis with a focus on the fundamental synthetic process, the mechanism, and the general advantages, and the emphasis on the MXene properties inherited from such green synthesis techniques. The emerging use of the so-called green MXenes in energy conversion and storage, environmental remediation, and biomedical applications is presented. Finally, the remaining challenges and prospects of greener MXene synthesis are discussed.
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Affiliation(s)
- Tahta Amrillah
- Department of Nanotechnology, Faculty of Advanced Technology and Multidiscipline, Universitas Airlangga, Surabaya 60115, East Java, Indonesia
| | - Che Azurahanim Che Abdullah
- Department of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, Selangor, Malaysia
- Nanomaterial Synthesis and Characterization Laboratory, Institute of Nanoscience and Nanotechnology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Angga Hermawan
- Research Center for Advanced Materials, National Research and Innovation Agency (BRIN), South Tangerang 15315, Banten, Indonesia
| | - Fitri Nur Indah Sari
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Vani Novita Alvani
- Graduate School of Environmental Studies, Tohoku University, Sendai 9808579, Japan
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8
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Ganić T, Vuletić S, Nikolić B, Stevanović M, Kuzmanović M, Kekić D, Đurović S, Cvetković S, Mitić-Ćulafić D. Cinnamon essential oil and its emulsion as efficient antibiofilm agents to combat Acinetobacter baumannii. Front Microbiol 2022; 13:989667. [PMID: 36299724 PMCID: PMC9589355 DOI: 10.3389/fmicb.2022.989667] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Acinetobacter baumannii is an emerging nosocomial pathogen resistant to a wide spectrum of antibiotics, with great potential to form a biofilm, which further aggravates treatment of infections caused by it. Therefore, searching for new potent agents that are efficient against A. baumannii seems to be a necessity. One of them, which has already been proven to possess a wide spectrum of biological activities, including antimicrobial effect, is cinnamon essential oil. Still, further increase of antibacterial efficacy and improvement of bioavailability of cinnamon oil is possible by emulsification process. The aim of this study was comparative analysis of cinnamon essential oil and its emulsion against biofilm forming A. baumannii clinical isolates. Furthermore, the investigation of toxicological aspects of possible applications of essential oil and emulsion was done as well. Gas chromatography–mass spectrometry of essential oil indicated trans-cinnamaldehyde as the most abundant component. The cinnamon emulsion was synthesized from cinnamon essential oil by combining modified low- and high- energy methods. Synthesized emulsion was characterized with Fourier-transform infrared spectroscopy and photon correlation spectroscopy. Both substances exhibited significant antibacterial (minimal inhibitory concentrations in the range 0.125–0.5 mg/ml) and antibiofilm effects (inhibitions of formation and reduction of pre-formed biofilm were 47–81 and 30–62%, respectively). Compared to essential oil, the efficacy of emulsion was even stronger considering the small share of pure oil (20%) in the emulsion. The result of biofilm eradication assay was confirmed by scanning electron microscopy. Even though the cytotoxicity was high especially for the emulsion, genotoxicity was not determined. In conclusion, strong antibacterial/antibiofilm effect against A. baumannii of the cinnamon essential oil and the fact that emulsification even potentiated the activity, seems to be of great significance. Observed cytotoxicity implicated that further analysis is needed in order to clearly determine active principles being responsible for obtained antibacterial/antibiofilm and cytotoxic properties.
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Affiliation(s)
- Tea Ganić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - Stefana Vuletić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - Biljana Nikolić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - Magdalena Stevanović
- Group for Biomedical Engineering and Nanobiotechnology, Institute of Technical Sciences of SASA, Belgrade, Serbia
| | - Maja Kuzmanović
- Group for Biomedical Engineering and Nanobiotechnology, Institute of Technical Sciences of SASA, Belgrade, Serbia
| | - Dušan Kekić
- Faculty of Medicine, Institute of Microbiology and Immunology, University of Belgrade, Belgrade, Serbia
| | - Saša Đurović
- Institute of General and Physical Chemistry, Belgrade, Serbia
| | | | - Dragana Mitić-Ćulafić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
- *Correspondence: Dragana Mitić-Ćulafić,
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9
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Vasdev N, Handa M, Kesharwani P, Shukla R. Rosemary oil low energy nanoemulsion: optimization, µrheology, in silico, in vitro, and ex vivo characterization. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:1901-1923. [PMID: 35686513 DOI: 10.1080/09205063.2022.2088527] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 06/03/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
Acetylcholine imbalance in the human brain causes dementia-related symptoms of Alzheimer's disease. Acetylcholinesterase (AChE) inhibitors prevent the lysis of acetylcholine in the brain and prevent dementia. Therefore, the present study aims to investigate the in silico and in vitro AChE potential of rosemary oil and then formulate it into nanoemulsion as an adjuvant with co-administration of Donepezil (Dz) with a thought for futuristic target for Alzheimer's diseases via the intranasal route. The aim for preparing this formulation was to add the AChE inhibition effect of the rosemary oil to the effect that acts as an additive effect along with Dz. The docking score of rosemary oil components on human cholinesterase 1GQR protein was found to be >-5 kcal/mol. In vitro AChE activity of rosemary oil confirms the prominent IC50 of oil at 0.001 µL/min. Nanoemulsion was prepared by low energy emulsification technique using Tween 80 as surfactant and ethanol or diethylene glycol monoethyl ether as cosurfactant. Droplet size, polydisperity index, and zeta potential of stable nanoemulsion was ∼16 nm, 0.1, and -6.05 mV for stable batch. High-resolution transmission electron microscopy microscopic studies depicted the spherical shape of the droplet. Micro rheology investigation of nanoemulsion clearly attributes to gel-sol-gel behaviour of formulated nanoemulsion. Thermal evaluation of nanoemulsion depicts the phase transition behaviour of ethanol-based nanoemulsion at 60 °C. Ex vivo nasal ciliotoxicity and permeation studies of formulation establish the safety of ethanol-based rosemary oil-loaded nanoemulsion and permeation mechanism of Dz from the nanoemulsion. In vitro permeation studies showed more drug penetration from the nanoemulsion as compared to the plain drug. The prepared nanoemulsion was found to be stable for 3 months at 4, 25, and 45 °C of storage. This low energy preparation method can be advantageous for the preparation of scalable nanoemulsion and can be a futuristic therapeutic for Alzheimer's disease.
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Affiliation(s)
- Nupur Vasdev
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, India
| | - Mayank Handa
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, India
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
- University Institute of Pharma Sciences, Chandigarh University, Mohali, Punjab, India
| | - Rahul Shukla
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, India
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10
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Study of the spontaneous nano-emulsification process with different octadecyl succinic anhydride derivatives. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Self-assembly of hydrophobically associating amphiphilic polymer with surfactant and its effect on nanoemulsion. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128599] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Ibis F, Yu TW, Penha FM, Ganguly D, Nuhu MA, van der Heijden AEDM, Kramer HJM, Eral HB. Nucleation kinetics of calcium oxalate monohydrate as a function of pH, magnesium, and osteopontin concentration quantified with droplet microfluidics. BIOMICROFLUIDICS 2021; 15:064103. [PMID: 34853626 PMCID: PMC8610605 DOI: 10.1063/5.0063714] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 10/31/2021] [Indexed: 05/02/2023]
Abstract
A droplet-based microfluidic platform is presented to study the nucleation kinetics of calcium oxalate monohydrate (COM), the most common constituent of kidney stones, while carefully monitoring the pseudo-polymorphic transitions. The precipitation kinetics of COM is studied as a function of supersaturation and pH as well as in the presence of inhibitors of stone formation, magnesium ions (Mg2+), and osteopontin (OPN). We rationalize the trends observed in the measured nucleation rates leveraging a solution chemistry model validated using isothermal solubility measurements. In equimolar calcium and oxalate ion concentrations with different buffer solutions, dramatically slower kinetics is observed at pH 6.0 compared to pHs 3.6 and 8.6. The addition of both Mg2+ and OPN to the solution slows down kinetics appreciably. Interestingly, complete nucleation inhibition is observed at significantly lower OPN, namely, 3.2 × 10-8 M, than Mg2+ concentrations, 0.875 × 10-4 M. The observed inhibition effect of OPN emphasizes the often-overlooked role of macromolecules on COM nucleation due to their low concentration presence in urine. Moreover, analysis of growth rates calculated from observed lag times suggests that inhibition in the presence of Mg2+ cannot be explained solely on altered supersaturation. The presented study highlights the potential of microfluidics in overcoming a major challenge in nephrolithiasis research, the overwhelming physiochemical complexity of urine.
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Affiliation(s)
- Fatma Ibis
- Complex Fluid Processing, Process & Energy Department, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
| | - Tsun Wang Yu
- Complex Fluid Processing, Process & Energy Department, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
| | - Frederico Marques Penha
- Department of Chemical Engineering, KTH Royal Institute of Technology, Teknikringen 42, SE100-44 Stockholm, Sweden
| | - Debadrita Ganguly
- Complex Fluid Processing, Process & Energy Department, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
| | - Manzoor Alhaji Nuhu
- Complex Fluid Processing, Process & Energy Department, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
| | - Antoine E. D. M. van der Heijden
- Complex Fluid Processing, Process & Energy Department, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
| | - Herman J. M. Kramer
- Complex Fluid Processing, Process & Energy Department, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
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13
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Gawin-Mikołajewicz A, Nartowski KP, Dyba AJ, Gołkowska AM, Malec K, Karolewicz B. Ophthalmic Nanoemulsions: From Composition to Technological Processes and Quality Control. Mol Pharm 2021; 18:3719-3740. [PMID: 34533317 PMCID: PMC8493553 DOI: 10.1021/acs.molpharmaceut.1c00650] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 12/14/2022]
Abstract
Nanoemulsions are considered as the most promising solution to improve the delivery of ophthalmic drugs. The design of ophthalmic nanoemulsions requires an extensive understanding of pharmaceutical as well as technological aspects related to the selection of excipients and formulation processes. This Review aims at providing the readers with a comprehensive summary of possible compositions of nanoemulsions, methods for their formulation (both laboratory and industrial), and differences between technological approaches, along with an extensive outline of the research methods enabling the confirmation of in vitro properties, pharmaceutical performance, and biological activity of the obtained product. The composition of the formulation has a major influence on the properties of the final product obtained with low-energy emulsification methods. Increasing interest in high-energy emulsification methods is a consequence of their scalability important from the industrial perspective. Considering the high-energy emulsification methods, both the composition and conditions of the process (e.g., device power level, pressure, temperature, homogenization time, or number of cycles) are important for the properties and stability of nanoemulsions. It is advisible to determine the effect of each parameter on the quality of the product to establish the optimal process parameters' range which, in turn, results in a more reproducible and efficient production.
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Affiliation(s)
| | - Karol P. Nartowski
- Department of Drug Form Technology, Wroclaw Medical University, Borowska 211 A, 50-556 Wroclaw, Poland
| | - Aleksandra J. Dyba
- Department of Drug Form Technology, Wroclaw Medical University, Borowska 211 A, 50-556 Wroclaw, Poland
| | - Anna M. Gołkowska
- Department of Drug Form Technology, Wroclaw Medical University, Borowska 211 A, 50-556 Wroclaw, Poland
| | - Katarzyna Malec
- Department of Drug Form Technology, Wroclaw Medical University, Borowska 211 A, 50-556 Wroclaw, Poland
| | - Bożena Karolewicz
- Department of Drug Form Technology, Wroclaw Medical University, Borowska 211 A, 50-556 Wroclaw, Poland
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14
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Mohd Nordin UU, Ahmad N, Salim N, Mohd Yusof NS. Lipid-based nanoparticles for psoriasis treatment: a review on conventional treatments, recent works, and future prospects. RSC Adv 2021; 11:29080-29101. [PMID: 35478537 PMCID: PMC9038133 DOI: 10.1039/d1ra06087b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 08/19/2021] [Indexed: 12/19/2022] Open
Abstract
Psoriasis is a lingering inflammatory skin disease that attacks the immune system. The abnormal interactions between T cells, immune cells, and inflammatory cytokines causing the epidermal thickening. International guidelines have recommended topical treatments for mild to moderate psoriasis whilst systemic and phototherapy treatments for moderate to severe psoriasis. However, current therapeutic approaches have a wider extent to treat moderate to severe type of psoriasis especially since the emergence of diverse biologic agents. In the meantime, topical delivery of conventional treatments has prompted many unsatisfactory effects to penetrate through the skin (stratum corneum). By understanding the physiology of stratum corneum barrier functions, scientists have developed different types of lipid-based nanoparticles like solid lipid nanoparticles, nanostructured lipid carriers, nanovesicles, and nanoemulsions. These novel drug delivery systems help the poorly solubilised active pharmaceutical ingredient reaches the targeted site seamlessly because of the bioavailability feature of the nanosized molecules. Lipid-based nanoparticles for psoriasis treatments create a paradigm for topical drug delivery due to their lipids' amphiphilic feature to efficiently encapsulate both lipophilic and hydrophilic drugs. This review highlights different types of lipid-based nanoparticles and their recent works of nano formulated psoriasis treatments. The encapsulation of psoriasis drugs through lipid nanocarriers unfold numerous research opportunities in pharmaceutical applications but also draw challenges for the future development of nano drugs.
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Affiliation(s)
- Ummu Umaimah Mohd Nordin
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia +603-79674193 +603-79674008
| | - Noraini Ahmad
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia +603-79674193 +603-79674008
| | - Norazlinaliza Salim
- Integrated Chemical Biophysics Research, Faculty of Science, Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia
| | - Nor Saadah Mohd Yusof
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia +603-79674193 +603-79674008
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15
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Akram S, Anton N, Omran Z, Vandamme T. Water-in-Oil Nano-Emulsions Prepared by Spontaneous Emulsification: New Insights on the Formulation Process. Pharmaceutics 2021; 13:1030. [PMID: 34371723 PMCID: PMC8309089 DOI: 10.3390/pharmaceutics13071030] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/29/2021] [Accepted: 07/03/2021] [Indexed: 11/17/2022] Open
Abstract
Nano-emulsions consist of stable suspensions of nano-scaled droplets that have huge loading capacities and are formulated with safe compounds. For these reasons, a large number of studies have described the potential uses of nano-emulsions, focusing on various aspects such as formulation processes, loading capabilities, and surface modifications. These studies typically concern direct nano-emulsions (i.e., oil-in-water), whereas studies on reverse nano-emulsions (i.e., water-in-oil) remain anecdotal. However, reverse nano-emulsion technology is very promising (e.g., as an alternative to liposome technology) for the development of drug delivery systems that encapsulate hydrophilic compounds within double droplets. The spontaneous emulsification process has the added advantages of optimization of the energetic yield, potential for industrial scale-up, improved loading capabilities, and preservation of fragile compounds targeted for encapsulation. In this study, we propose a detailed investigation of the processes and formulation parameters involved in the spontaneous nano-emulsification that produces water-in-oil nano-emulsions. The following details were addressed: (i) the order of mixing of the different compounds (method A and method B), (ii) mixing rates, (iii) amount of surfactants, (iv) type and mixture of surfactants, (v) amount of dispersed phase, and (vi) influence of the nature of the oil. The results emphasized the effects of the formulation parameters (e.g., the volume fraction of the dispersed phase, nature or concentration of surfactant, or nature of the oil) on the nature and properties of the nano-emulsions formed.
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Affiliation(s)
- Salman Akram
- Faculty of Pharmacy, Université de Strasbourg, CNRS, CAMB UMR 7199, F-67000 Strasbourg, France; (S.A.); (N.A.)
| | - Nicolas Anton
- Faculty of Pharmacy, Université de Strasbourg, CNRS, CAMB UMR 7199, F-67000 Strasbourg, France; (S.A.); (N.A.)
- INSERM, Regenerative Nanomedicine UMR 1260, Centre de Recherche en Biomédecine de Strasbourg (CRBS), Université de Strasbourg, F-67000 Strasbourg, France
| | - Ziad Omran
- Pharmacy Program, Department of Pharmaceutical Sciences, Batterjee Medical College, Jeddah 21442, Saudi Arabia
| | - Thierry Vandamme
- Faculty of Pharmacy, Université de Strasbourg, CNRS, CAMB UMR 7199, F-67000 Strasbourg, France; (S.A.); (N.A.)
- INSERM, Regenerative Nanomedicine UMR 1260, Centre de Recherche en Biomédecine de Strasbourg (CRBS), Université de Strasbourg, F-67000 Strasbourg, France
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16
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Enhanced anti-psoriatic activity of tacrolimus loaded nanoemulsion gel via omega 3 - Fatty acid (EPA and DHA) rich oils-fish oil and linseed oil. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102458] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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17
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Nieves E, Vite G, Kozina A, Olguin LF. Ultrasound-assisted production and optimization of mini-emulsions in a microfluidic chip in continuous-flow. ULTRASONICS SONOCHEMISTRY 2021; 74:105556. [PMID: 33915482 PMCID: PMC8093933 DOI: 10.1016/j.ultsonch.2021.105556] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 04/03/2021] [Accepted: 04/12/2021] [Indexed: 05/10/2023]
Abstract
The use of ultrasound to generate mini-emulsions (50 nm to 1 μm in diameter) and nanoemulsions (mean droplet diameter < 200 nm) is of great relevance in drug delivery, particle synthesis and cosmetic and food industries. Therefore, it is desirable to develop new strategies to obtain new formulations faster and with less reagent consumption. Here, we present a polydimethylsiloxane (PDMS)-based microfluidic device that generates oil-in-water or water-in-oil mini-emulsions in continuous flow employing ultrasound as the driving force. A Langevin piezoelectric attached to the same glass slide as the microdevice provides enough power to create mini-emulsions in a single cycle and without reagents pre-homogenization. By introducing independently four different fluids into the microfluidic platform, it is possible to gradually modify the composition of oil, water and two different surfactants, to determine the most favorable formulation for minimizing droplet diameter and polydispersity, employing less than 500 µL of reagents. It was found that cavitation bubbles are the most important mechanism underlying emulsions formation in the microchannels and that degassing of the aqueous phase before its introduction to the device can be an important factor for reduction of droplet polydispersity. This idea is demonstrated by synthetizing solid polymeric particles with a narrow size distribution starting from a mini-emulsion produced by the device.
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Affiliation(s)
- Erick Nieves
- Laboratorio de Biofisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Giselle Vite
- Instituto de Química, Universidad Nacional Autónoma de México, P. O. Box 70-213, Mexico City, Mexico
| | - Anna Kozina
- Instituto de Química, Universidad Nacional Autónoma de México, P. O. Box 70-213, Mexico City, Mexico
| | - Luis F Olguin
- Laboratorio de Biofisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico.
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18
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Vega-Vásquez P, Mosier NS, Irudayaraj J. Hormesis-Inducing Essential Oil Nanodelivery System Protects Plants against Broad Host-Range Necrotrophs. ACS NANO 2021; 15:8338-8349. [PMID: 33881823 DOI: 10.1021/acsnano.0c09759] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Botrytis cinerea, a broad host-range necrotrophic (BHN) phytopathogen, establishes compatible interactions with hosts by deploying multigene infection strategies, rendering simply inherited resistance ineffective to fight off this pathogen. Since essential oils (EOs) serve as intermediators during phytobiome communication, we hypothesize that they have the potential to enhance the quantitative disease resistance against BHN by eliciting the adaptive stress response (hormesis) in plants. However, using EOs is challenging due to their poor solubility in water. Nanoemulsification of EOs enhances not only the solubility of EOs but also their potency and stability. Here, we demonstrate the potential use of essential oil nanoemulsions (EONEs) to control infections caused by BHN. Using basic engineering principles of nanocarrier design, we demonstrate the efficacy of a robust EONEs design for controlling B. cinerea infection in a model plant, Arabidopsis thaliana. Our nanoemulsion delivery system significantly enhanced the disease resistance of the host by reducing the necrotic area by up to 50% compared to untreated plants. RNA-seq analysis indicated that successful treatments upregulated autophagy, ROS scavenging, and activation of the jasmonic acid signaling pathway.
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Affiliation(s)
- Pablo Vega-Vásquez
- Laboratory of Renewable Resources Engineering (LORRE), Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Nathan S Mosier
- Laboratory of Renewable Resources Engineering (LORRE), Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Joseph Irudayaraj
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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19
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Pal N, Mandal A. Compositional simulation model and history-matching analysis of surfactant-polymer-nanoparticle (SPN) nanoemulsion assisted enhanced oil recovery. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.04.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Handa M, Ujjwal RR, Vasdev N, Flora SJS, Shukla R. Optimization of Surfactant- and Cosurfactant-Aided Pine Oil Nanoemulsions by Isothermal Low-Energy Methods for Anticholinesterase Activity. ACS OMEGA 2021; 6:559-568. [PMID: 33458508 PMCID: PMC7807745 DOI: 10.1021/acsomega.0c05033] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 11/24/2020] [Indexed: 05/27/2023]
Abstract
Highly stable pine oil-loaded nanoemulsions were evaluated for nutraceutical and storage stability applications. Pine oil-loaded nanoemulsion preparation was done with pine oil as the oily phase and additionally with different ratios of the non-ionic surfactant (Tween 80) and cosurfactant (ethanol) in an aqueous solution using the isothermal low-energy or spontaneous emulsification method. A transparent and stable nanoemulsion was obtained with a combination of pine oil (5 wt %), surfactant mixture (35 wt %), and water quantity sufficient (qs) by the isothermal low-energy method. The mean droplet size and ζ-potential of the fabricated nanoemulsion were ≈14 nm and -3.4 mV, respectively. The size of the transparent nanoemulsion increased to ∼45 nm and showed turbidity at 60 °C. Microrheological investigation highlighted the gel-sol-gel conversion in the presence of applied angular frequency at 25 °C. The loss modulus shifted to lower frequency at 60 °C in comparison to other temperatures. The anticholinesterase (AChE) inhibition activity of the pine oil-loaded nanoemulsion suggested a possible therapeutic value, and at 0.10% concentration of the nanoemulsion, the AChE inhibition activity was ≈95.72 ± 5.59%. These studies have important implications in fabrication and optimization of a nanoemulsion as a delivery system for combating reminiscence in Alzheimer's disease and application in the nutraceutical-based industry. This isothermal low-energy method offers an advantage of preparing an edible oil delivery system using simple and rapid operational parameters.
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Affiliation(s)
- Mayank Handa
- Department
of Pharmaceutics, National Institute of
Pharmaceutical Education and Research (NIPER)-Raebareli, Lucknow 226002, India
| | - Rewati Raman Ujjwal
- Department
of Pharmacology and Toxicology, National
Institute of Pharmaceutical Education and Research (NIPER)-Raebareli, Lucknow 226002, India
| | - Nupur Vasdev
- Department
of Pharmaceutics, National Institute of
Pharmaceutical Education and Research (NIPER)-Raebareli, Lucknow 226002, India
| | - S. J. S. Flora
- Department
of Pharmacology and Toxicology, National
Institute of Pharmaceutical Education and Research (NIPER)-Raebareli, Lucknow 226002, India
| | - Rahul Shukla
- Department
of Pharmaceutics, National Institute of
Pharmaceutical Education and Research (NIPER)-Raebareli, Lucknow 226002, India
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21
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Current developments and future outlook in nanofluid flooding: A comprehensive review of various parameters influencing oil recovery mechanisms. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2020.10.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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22
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Chen L, Cheng L, Doyle PS. Nanoemulsion-Loaded Capsules for Controlled Delivery of Lipophilic Active Ingredients. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001677. [PMID: 33101868 PMCID: PMC7578884 DOI: 10.1002/advs.202001677] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/24/2020] [Indexed: 05/04/2023]
Abstract
Nanoemulsions have become ideal candidates for loading hydrophobic active ingredients and enhancing their bioavailability in the pharmaceutical, food, and cosmetic industries. However, the lack of versatile carrier platforms for nanoemulsions hinders advanced control over their release behavior. In this work, a method is developed to encapsulate nanoemulsions in alginate capsules for the controlled delivery of lipophilic active ingredients. Functional nanoemulsions loaded with active ingredients and calcium ions are first prepared, followed by encapsulation inside alginate shells. The intrinsically high viscosity of the nanoemulsions ensures the formation of spherical capsules and high encapsulation efficiency during the synthesis. Moreover, a facile approach is developed to measure the nanoemulsion release profile from capsules through UV-vis measurement without an additional extraction step. A quantitative analysis of the release profiles shows that the capsule systems possess a tunable, delayed-burst release. The encapsulation methodology is generalized to other active ingredients, oil phases, nanodroplet sizes, and chemically crosslinked inner hydrogel cores. Overall, the capsule systems provide promising platforms for various functional nanoemulsion formulations.
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Affiliation(s)
- Liang‐Hsun Chen
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Li‐Chiun Cheng
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Patrick S. Doyle
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
- Campus for Research Excellence and Technological EnterpriseSingapore138602Singapore
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23
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Meng R, Wang C, Shen Z, Wang R, Kuru E, Jin J. Low-energy formation of in-situ nanoemulsion at constant temperature for oil removal. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113663] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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24
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Adibnia V, Afuwape G, Hill RJ. Electrokinetic Sonic Amplitude of Polyelectrolyte Solutions and Networks. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01409] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Vahid Adibnia
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Gbolahan Afuwape
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Reghan J. Hill
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
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25
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Exploration of polysaccharide based nanoemulsions for stabilization and entrapment of curcumin. Int J Biol Macromol 2020; 156:1287-1296. [DOI: 10.1016/j.ijbiomac.2019.11.167] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/11/2019] [Accepted: 11/19/2019] [Indexed: 12/18/2022]
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26
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Feng J, Rodríguez‐Abreu C, Esquena J, Solans C. A Concise Review on Nano‐emulsion Formation by the Phase Inversion Composition (PIC) Method. J SURFACTANTS DETERG 2020. [DOI: 10.1002/jsde.12414] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jin Feng
- Inner Mongolia Vocational College of Chemical Engineering Hohhot China
| | - Carlos Rodríguez‐Abreu
- Institut de Química Avançada de Catalunya, Consejo Superior de Investigaciones Científicas (IQAC‐CSIC) and CIBER en BioingenieríaBiomateriales y Nanomedicina, (CIBER‐BBN) Jordi‐Girona 18‐26 08034 Barcelona Spain
| | - Jordi Esquena
- Institut de Química Avançada de Catalunya, Consejo Superior de Investigaciones Científicas (IQAC‐CSIC) and CIBER en BioingenieríaBiomateriales y Nanomedicina, (CIBER‐BBN) Jordi‐Girona 18‐26 08034 Barcelona Spain
| | - Conxita Solans
- Institut de Química Avançada de Catalunya, Consejo Superior de Investigaciones Científicas (IQAC‐CSIC) and CIBER en BioingenieríaBiomateriales y Nanomedicina, (CIBER‐BBN) Jordi‐Girona 18‐26 08034 Barcelona Spain
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27
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Neibloom D, Bevan MA, Frechette J. Surfactant-Stabilized Spontaneous 3-(Trimethoxysilyl) Propyl Methacrylate Nanoemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:284-292. [PMID: 31838848 DOI: 10.1021/acs.langmuir.9b03412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanoemulsions are a versatile means to create a variety of consumer products and complex materials. Producing nanoemulsions with a high volume fraction of the dispersed phase is generally limited to mechanically intensive processes, such as high-pressure homogenization, and often results in polydisperse droplet size distributions. Low-energy methods, such as spontaneous emulsification, can produce monodispersed droplets, but the volume fraction of the dispersed phase is usually much lower. Here, we report on the spontaneous emulsification of 3-(trimethoxysilyl) propyl methacrylate (TPM) into an alkaline aqueous phase (pH > 10.0) that contains surfactants (Tween 20, sodium dodecyl sulfate (SDS), or cetyltrimethylammonium bromide (CTAB)). The nanoemulsions are monodisperse with droplet diameters that range between 15 and 500 nm. The small droplet size is due to the presence of surfactants that stabilize the droplets against coalescence. The spontaneous emulsion process can produce emulsions with a dispersed volume fraction of up to 10% in CTAB solutions and up to 30% using Tween 20 and SDS. After the emulsification process, the TPM droplets can be polymerized to produce nanoparticles. Using dynamic light scattering and scanning electron microscopy, we characterize the relationship between the surfactant concentration and the size of the droplets in the nanoemulsions. We find that the droplet diameter is primarily determined by the molar ratio of oil to surfactant. We also find that the pH in the aqueous phase also modulates the droplet diameter when using an ionic surfactant. This work expands the spontaneous emulsification of TPM in the absence of stabilizing particles to the nanoscale while producing one of the highest volume fractions of nanoemulsion droplets obtained via a low-energy mechanism.
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Affiliation(s)
- Denise Neibloom
- Chemical and Biomolecular Engineering Department , Johns Hopkins University , Baltimore , Maryland 21218 , United States
| | - Michael A Bevan
- Chemical and Biomolecular Engineering Department , Johns Hopkins University , Baltimore , Maryland 21218 , United States
| | - Joelle Frechette
- Chemical and Biomolecular Engineering Department , Johns Hopkins University , Baltimore , Maryland 21218 , United States
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28
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Optimization of low-energy Pickering nanoemulsion stabilized with montmorillonite and nonionic surfactants. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124098] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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29
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Saffarionpour S. Preparation of Food Flavor Nanoemulsions by High- and Low-Energy Emulsification Approaches. FOOD ENGINEERING REVIEWS 2019. [DOI: 10.1007/s12393-019-09201-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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30
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Microstructure evolution during nano-emulsification by NMR and microscopy. J Colloid Interface Sci 2019; 551:138-146. [PMID: 31075628 DOI: 10.1016/j.jcis.2019.04.098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/24/2019] [Accepted: 04/30/2019] [Indexed: 11/22/2022]
Abstract
HYPOTHESIS Microstructure evolution in emulsions as a function of composition is of great interest but fundamentals have not yet been fully elucidated. Here, pulsed-field gradient (PFG) NMR diffusion measurements have been combined with confocal laser scanning microscopy (CLSM) to assess evolution of dynamics and microstructure during nano-emulsification. EXPERIMENTS Diffusion coefficients of emulsions made of water, mineral oil and surfactants (Span 20 and Tween 80) were measured as a function of water composition and compared with the morphological features of the emulsions obtained by CLSM. FINDINGS In the absence of water, two phases are visible from CLSM, and two diffusion components are observed with PFG NMR, a major fast component attributed to a continuous oil phase containing the more hydrophobic surfactant Span 20 with traces of Tween 80, and a minor slow component attributed to a dispersed phase of the more hydrophilic surfactant Tween 80 with traces of mineral oil and Span 20. At the inversion point (25 wt% water) the two-component diffusion behavior of the oil-rich phase is drastically reversed in terms of populations, with the slow diffusion process becoming dominant. This suggests a significant structuring of the oil-rich phase in the presence of surfactants enhanced by water, which can be explained by the formation of aggregates in the oil phase as reverse micelles or of a lamellar structure, and ties in well with the rheological measurements.
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Michel SES, Dutertre F, Denbow ML, Galan MC, Briscoe WH. Facile Synthesis of Chitosan-Based Hydrogels and Microgels through Thiol–Ene Photoclick Cross-Linking. ACS APPLIED BIO MATERIALS 2019; 2:3257-3268. [DOI: 10.1021/acsabm.9b00218] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sarah E. S. Michel
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Fabien Dutertre
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Mark L. Denbow
- Fetal Medicine Unit, St Michael’s Hospital, Southwell Street, Bristol BS2 8EG, United Kingdom
| | - M. Carmen Galan
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Wuge H. Briscoe
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
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Singh K, Gupta A, Buchner AJ, Ibis F, Pronk JW, Tam D, Eral HB. Analysis of centrifugal homogenization and its applications for emulsification & mechanical cell lysis. J Colloid Interface Sci 2019; 547:127-135. [DOI: 10.1016/j.jcis.2019.03.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 03/09/2019] [Accepted: 03/11/2019] [Indexed: 10/27/2022]
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Hashemnejad SM, Badruddoza AZM, Zarket B, Ricardo Castaneda C, Doyle PS. Thermoresponsive nanoemulsion-based gel synthesized through a low-energy process. Nat Commun 2019; 10:2749. [PMID: 31227703 PMCID: PMC6588569 DOI: 10.1038/s41467-019-10749-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 05/28/2019] [Indexed: 01/09/2023] Open
Abstract
Thermoresponsive nanoemulsions find utility in applications ranging from food to pharmaceuticals to consumer products. Prior systems have found limited translation to applications due to cytotoxicity of the compositions and/or difficulties in scaling-up the process. Here, we report a route to thermally gel an oil-in-water nanoemulsion using a small amount of FDA-approved amphiphilic triblock Pluronic copolymers which act as gelling agents. At ambient temperature the suspension displays liquid-like behavior, and quickly becomes an elastic gel at elevated temperatures. We propose a gelation mechanism triggered by synergistic action of thermally-induced adsorption of Pluronic copolymers onto the droplet interface and an increased micelle concentration in the aqueous solution. We demonstrate that the system's properties can be tuned via many factors and report their rheological properties. The nanoemulsions are prepared using a low-energy process which offers an efficient route to scale-up. The nanoemulsion formulations are well-suited for use in cosmetics and pharmaceutical applications.
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Affiliation(s)
- Seyed Meysam Hashemnejad
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02142, USA
| | - Abu Zayed Md Badruddoza
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02142, USA
| | - Brady Zarket
- L'Oréal Research and Innovation, Clark, NJ, 07066, USA
| | - Carlos Ricardo Castaneda
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02142, USA
| | - Patrick S Doyle
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02142, USA.
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Ren G, Sun Z, Wang Z, Zheng X, Xu Z, Sun D. Nanoemulsion formation by the phase inversion temperature method using polyoxypropylene surfactants. J Colloid Interface Sci 2019; 540:177-184. [DOI: 10.1016/j.jcis.2019.01.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 01/03/2019] [Accepted: 01/04/2019] [Indexed: 12/17/2022]
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Pal N, Kumar N, Mandal A. Stabilization of Dispersed Oil Droplets in Nanoemulsions by Synergistic Effects of the Gemini Surfactant, PHPA Polymer, and Silica Nanoparticle. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:2655-2667. [PMID: 30672301 DOI: 10.1021/acs.langmuir.8b03364] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Nanoemulsion systems comprising n-heptane (oleic component), stabilized by the {gemini surfactant (14-6-14 GS) + polymer [partially hydrolyzed poly-acrylamide (PHPA)] + silica (SiO2) nanoparticle} shell and dispersed in aqueous phase, were synthesized by ultrasonication (high-energy method). Influence of ultrasonication time on nanoemulsion kinetics was investigated to predict the saturation droplet diameter. Morphological analysis by transmission electron cryomicroscopy imaging showed that oleic phase appears as uniformly dispersed spherical droplets in 14-6-14 GS-stabilized nanoemulsion, which on PHPA addition changes into a network structure consisting of larger oil droplets. 14-6-14 + PHPA + SiO2 nanoemulsion systems show more effective packing arrangement with irregular-shaped (nonspherical) droplets. Dynamic light scattering studies identified droplet size distribution profiles in the range 4.2-25.4 nm for the surfactant-stabilized nanoemulsion, 125.9-358.8 nm for the surfactant-polymer nanoemulsion, and 88.4-222.3 nm for the surfactant-polymer-nanoparticle-based nanoemulsion in optimal dosage(s). Statistical analyses were performed using normal, log-normal, and Cauchy-Lorentz distribution functions. A modified form of Hinze theory was employed to model droplet behavior in analyzed nanoemulsion systems. Zeta potential values of nanoemulsions were studied at different time intervals to determine kinetic stability as well as corroborate Hinze model findings. In summary, this article aims at investigating nanoemulsion droplet stability by thorough examination of electrostatic repulsive barrier and steric hindrance effects.
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Affiliation(s)
- Nilanjan Pal
- Indian Institute of Technology (Indian School of Mines) , Dhanbad 826004 , India
| | - Narendra Kumar
- Indian Institute of Technology (Indian School of Mines) , Dhanbad 826004 , India
| | - Ajay Mandal
- Indian Institute of Technology (Indian School of Mines) , Dhanbad 826004 , India
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Akram S, Wang X, Vandamme TF, Collot M, Rehman AU, Messaddeq N, Mély Y, Anton N. Toward the Formulation of Stable Micro and Nano Double Emulsions through a Silica Coating on Internal Water Droplets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:2313-2325. [PMID: 30630316 DOI: 10.1021/acs.langmuir.8b03919] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Delivery systems able to coencapsulate both hydrophilic and hydrophobic species are of great interest in both fundamental research and industrial applications. Water-in-oil-in-water (w1/O/W2) emulsions are interesting systems for this purpose, but they suffer from limited stability. In this study, we propose an innovative approach to stabilize double emulsions by the synthesis of a silica membrane at the water/oil interface of the primary emulsion (i.e., inner w1/O emulsion). This approach allows the formulation of stable double emulsions through a two-step process, enabling high encapsulation efficiencies of model hydrophilic dyes encapsulated in the internal droplets. This approach also decreases the scale of the double droplets up to the nanoscale, which is not possible without silica stabilization. Different formulation and processing parameters were explored in order to optimize the methodology. Physicochemical characterization was performed by dynamic light scattering, encapsulation efficiency measurements, release profiles, and optical and transmission electron microscopies.
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Peng F, Ke Y, Lu S, Zhao Y, Hu X, Deng Q. Anion amphiphilic random copolymers and their performance as stabilizers for O/W nanoemulsions. RSC Adv 2019; 9:14692-14700. [PMID: 35516327 PMCID: PMC9064215 DOI: 10.1039/c9ra01383k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 04/25/2019] [Indexed: 11/21/2022] Open
Abstract
A series of anionic amphiphilic random copolymers with sodium p-styrene sulfonate and dodecyl methacrylate were synthesized via free radical polymerization and their property in the formation and stabilization of nano-emulsions were investigated.
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Affiliation(s)
- Fangfang Peng
- College of Science
- China University of Petroleum
- Beijing
- China
| | - Yangchuan Ke
- College of Science
- China University of Petroleum
- Beijing
- China
| | - Shichao Lu
- College of Science
- China University of Petroleum
- Beijing
- China
| | - Yi Zhao
- College of Science
- China University of Petroleum
- Beijing
- China
| | - Xu Hu
- College of Science
- China University of Petroleum
- Beijing
- China
| | - Qingchun Deng
- College of Science
- China University of Petroleum
- Beijing
- China
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Kumar H, Kumar V. Ultrasonication assisted formation and stability of water-in-oil nanoemulsions: Optimization and ternary diagram analysis. ULTRASONICS SONOCHEMISTRY 2018; 49:79-88. [PMID: 30057181 DOI: 10.1016/j.ultsonch.2018.07.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 07/17/2018] [Accepted: 07/18/2018] [Indexed: 05/25/2023]
Abstract
An energy efficient and scalable method designed to form stable and transparent water-in-oil (W/O) nanoemulsion can be attained by optimization of process parameters and study of ternary diagram. Application of high energy in addition to the low energy at the optimized conditions have been targeted to make the process energy efficient, since later part is applied to droplets formed at less energy. In the present work, formation of combined energy mixed surfactant nanoemulsion was achieved by combined approach of isothermal low energy followed by ultrasonication that could be used as a fuel in compression ignition engine free from NOx and particulate matter emissions. A mixture of two functional groups (ether and ester) non-ionic surfactants was used at optimized ratio of 0.71/0.29 (Span 80/TX-100; w/w). Optimization of ultrasonicated parameters resulted in 25% amplitude, 0.5 pulse mode factor and 8.5 min of sonication time. A ternary diagram study was performed to recognize the compositions accountable for the formation of transparent, translucent and opaque emulsions in the bounded range of water fraction 0.02 to 0.11 and surfactant fraction 0.10 to 0.20. Surfactant-to-water (β) ratio found applicable for the production of nano-sized droplets in the range of 2 ≤ β ≤ 3. A minimum droplet size of 25 ± 1 nm was attained in the present study. An increase in surfactant fraction decreased average droplet size, whereas, increase in water fraction increased average droplet size. Reduction in droplet size was prominently found in the range of energy density from 15.23 J.ml-1 to 40 J.ml-1 thereafter, it decelerated up to 160 J.ml-1. Prediction of average droplet size modeled with energy density fitted well and could be used for scaling up and tuning the droplet size. Resultant nanoemulsion samples displayed kinetic stability whereas long term stability (45 days) assessed using Ostwald ripening model showed stability in the order of β = 2.0 > β = 2.5 > β = 3.0 > β = 4.0.
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Affiliation(s)
- Hemant Kumar
- Department of Chemical Engineering, Indian Institute of Technology, Roorkee, India
| | - Vimal Kumar
- Department of Chemical Engineering, Indian Institute of Technology, Roorkee, India.
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Badruddoza AZM, Gupta A, Myerson AS, Trout BL, Doyle PS. Low Energy Nanoemulsions as Templates for the Formulation of Hydrophobic Drugs. ADVANCED THERAPEUTICS 2018. [DOI: 10.1002/adtp.201700020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Abu Zayed Md Badruddoza
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Ankur Gupta
- Department of Mechanical and Aerospace Engineering; Princeton University; Princeton NJ 08540 USA
| | - Allan S. Myerson
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Bernhardt L. Trout
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Patrick S. Doyle
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
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Thompson KL, Cinotti N, Jones ER, Mable CJ, Fowler PW, Armes SP. Bespoke Diblock Copolymer Nanoparticles Enable the Production of Relatively Stable Oil-in-Water Pickering Nanoemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12616-12623. [PMID: 29022716 PMCID: PMC5677761 DOI: 10.1021/acs.langmuir.7b02267] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 10/09/2017] [Indexed: 05/24/2023]
Abstract
Sterically stabilized diblock copolymer nanoparticles with an intensity-average diameter of 25 nm are prepared in the form of a concentrated aqueous dispersion using polymerization-induced self-assembly (PISA). The addition of n-dodecane followed by high-shear homogenization produces n-dodecane-in-water Pickering macroemulsions of 22-46 μm diameter. If the nanoparticles are present in sufficient excess, then subsequent processing using a high-pressure microfluidizer leads to the formation of Pickering nanoemulsions with a mean oil droplet diameter below 200 nm. The size of these Pickering nanoemulsions can be tuned by systematically varying the nanoparticle concentration, applied pressure, number of passes, and oil volume fraction. High-internal-phase emulsions can also be achieved by increasing the n-dodecane volume fraction up to 0.80. TEM studies of (dried) n-dodecane droplets confirm the presence of intact nanoparticles and suggest a relatively high surface coverage, which is consistent with model packing calculations based on radius ratios. Such Pickering nanoemulsions proved to be surprisingly stable with respect to Ostwald ripening, with no significant change in the mean DLS droplet diameter after storage for approximately 4 months at 20 °C.
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