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Guo Y, Zhang X, Wang X, Zhang L, Xu Z, Sun D. Nanoemulsions Stable against Ostwald Ripening. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1364-1372. [PMID: 38175958 DOI: 10.1021/acs.langmuir.3c03019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Ostwald ripening, the dominant mechanism of droplet size growth for an O/W nanoemulsion at high surfactant concentrations, depends on micelles in the water phase and high aqueous solubility of oil, especially for spontaneously formed nanoemulsions. In our study, O/W nanoemulsions were formed spontaneously by mixing a water phase with an oil phase containing fatty alcohol polyoxypropylene polyoxyethylene ether (APE). By monitoring periodically the droplet size of the nanoemulsions via dynamic light scattering, we demonstrated that the formed O/W nanoemulsions are stable against Ostwald ripening, i.e., droplet growth. In contrast, the nanoemulsion droplets grew with the addition of micelles, demonstrating the pivotal role of the presence of micelles in the water phase in the occurrence of Ostwald ripening. The influence of the initial phase of APE, the oil or water phase in which APE is present, on the micelle formation is discussed by the partition coefficient and interfacial adsorption of APE between the oil and water phase using a surface and interfacial tensiometer. In addition, the spontaneously formed O/W nanoemulsion, which is stable against Ostwald ripening, can be used as a nanocarrier for the delivery of water-insoluble pesticides. These results provide a novel approach for the preparation of stable nanoemulsions and contribute to elucidating the mechanism of instability of nanoemulsions.
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Affiliation(s)
- Yanlin Guo
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong 250100, P. R. China
| | - Xinpeng Zhang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong 250100, P. R. China
| | - Xiaohan Wang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong 250100, P. R. China
| | - Li Zhang
- Shandong Analysis and Test Centre, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250014, PR China
| | - Zhenghe Xu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Dejun Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong 250100, P. R. China
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Yousefpoor Y, Esnaashari SS, Baharifar H, Mehrabi M, Amani A. Current challenges ahead in preparation, characterization, and pharmaceutical applications of nanoemulsions. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023; 15:e1920. [PMID: 37558229 DOI: 10.1002/wnan.1920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 06/07/2023] [Accepted: 06/27/2023] [Indexed: 08/11/2023]
Abstract
Nanoemulsions (NEs) are emulsions with particle size of less than around 100 nm. Reviewing the literature, several reports are available on NEs, including preparation, characterization, and applications of them. This review aims to brief challenges that researchers or formulators may encounter when working with NEs. For instance, when selecting NE components and identifying their concentrations, stability and safety of the preparation should be evaluated. When preparing an NE, issues over scale-up of the preparation as well as possible effects of the preparation process on the active ingredient need to be considered. When characterizing the NEs, the two major concerns are accuracy of the method and accessibility of the characterizing instrument. Also a highly efficient NE for clinical use to deliver the active ingredient to the target tissue with maximum safety profile is commonly sought. Throughout the review we also have tried to suggest approaches to overcome the challenges. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies.
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Affiliation(s)
- Yaser Yousefpoor
- Department of Medical Biotechnology, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
- Research Center of Advanced Technologies in Medicine, Torbat Heydariyeh University of Medical, Torbat Heydariyeh, Iran
| | - Seyedeh Sara Esnaashari
- Department of Medical Nanotechnology, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Hadi Baharifar
- Department of Medical Nanotechnology, Applied Biophotonics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mohsen Mehrabi
- Department of Medical Nanotechnology, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Amir Amani
- Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran
- Department of Advanced Technologies, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
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3
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Alderees F, Akter S, Mereddy R, Sultanbawa Y. Formulation, characterization, and stability of food grade oil‐in‐water nanoemulsions of essential oils of
Tasmannia lanceolata
,
Backhousia citriodora
and
Syzygium anisatum. J Food Saf 2022. [DOI: 10.1111/jfs.13001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fahad Alderees
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation (QAAFI) The University of Queensland Indooroopilly QLD Australia
| | - Saleha Akter
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation (QAAFI) The University of Queensland Indooroopilly QLD Australia
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation (QAAFI) The University of Queensland Indooroopilly QLD Australia
| | - Ram Mereddy
- Department of Agriculture and Fisheries Queensland Government, Health and Food Sciences Precinct Coopers Plains Qld Australia
| | - Yasmina Sultanbawa
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation (QAAFI) The University of Queensland Indooroopilly QLD Australia
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation (QAAFI) The University of Queensland Indooroopilly QLD Australia
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Shahid M, Hussain A, Khan AA, Ramzan M, Alaofi AL, Alanazi AM, Alanazi MM, Rauf MA. Ketoconazole-Loaded Cationic Nanoemulsion: In Vitro- Ex Vivo- In Vivo Evaluations to Control Cutaneous Fungal Infections. ACS OMEGA 2022; 7:20267-20279. [PMID: 35721949 PMCID: PMC9201893 DOI: 10.1021/acsomega.2c02219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
An attempt has been made to optimize ketoconazole (KTZ)-loaded cationic nanoemulsion for topical delivery followed by in vitro, ex vivo, and in vivo evaluations. Central composite design suggested a total of 13 outcomes at 3 factors and 2 levels against 6 responses. Formulations were characterized for globular size, polydispersity index, pH, ζ potential, % entrapment efficiency (% EE), and drug content. Moreover, the optimized KTZ-CNM13 was compared against drug suspension (KTZ-SUS), commercial cream, and anionic nanoemulsion for in vitro drug release, ex vivo permeation, in vitro hemolysis, antifungal assay, in vivo dermal irritancy, and long-term stability. KTZ-CNM13 was found to have a low size (239 nm), an optimal ζ potential (+22.7 mV), a high % EE (89.1%), a spherical shape, a high drug content (98.9%), and a high numerical desirability value (1.0). In vitro drug release behavior of KTZ from KTZ-CNM13 was 7.54- and 1.71-folds higher than those of KTZ-ANM13 and KTZ-SUS, respectively, at 24 h. The permeation rate values were ordered as KTZ-CNM13 > KTZ-ANM13 > KTZ-MKT > KTZ-SUP due to various studied factors. High values of zone of inhibition for KTZ-CNM13 were observed against Candida albicans, Candida glabrata, Candida tropicalis, and Candida krusei as compared to KTZ-SUS. In vitro hemolysis and in vivo irritation studied confirmed the safety concern of the nanoemulsion at the explored composition. Long-term stability result revealed a stable product at the explored temperature for a year. Conclusively, cationic nanoemulsion is a promising approach to deliver KTZ for high permeation and therapeutic efficacy.
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Affiliation(s)
- Mudassar Shahid
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Afzal Hussain
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Azmat Ali Khan
- Pharmaceutical
Biotechnology Laboratory, Department of Pharmaceutical Chemistry,
College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohhammad Ramzan
- School
of Pharmaceutical Sciences, Lovely Professional
University, Phagwara, Jalandhar, Punjab 144411, India
| | - Ahmed L. Alaofi
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Amer M. Alanazi
- Pharmaceutical
Biotechnology Laboratory, Department of Pharmaceutical Chemistry,
College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohammad M. Alanazi
- Pharmaceutical
Biotechnology Laboratory, Department of Pharmaceutical Chemistry,
College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohd Ahmar Rauf
- Department
of Pharmacy, Eugene Applebaum, College of Pharmacy and Health Sciences, Wayne State University, Detroit, Michigan 48201, United States
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Shahid M, Hussain A, Khan AA, Alanazi AM, Alaofi AL, Alam M, Ramzan M. Antifungal Cationic Nanoemulsion Ferrying Miconazole Nitrate with Synergism to Control Fungal Infections: In Vitro, Ex Vivo, and In Vivo Evaluations. ACS OMEGA 2022; 7:13343-13353. [PMID: 35474838 PMCID: PMC9026025 DOI: 10.1021/acsomega.2c01075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
This study aimed to deliver a cationic nanoemulsion carrying miconazole nitrate (MCN) to control fungal infections using excipients for synergism. Peceol (oil) and labrasol (surfactant) were selected based on maximum solubility and zone of inhibition values against Candida albicans and Aspergillus niger. Optimized MCNE11 was evaluated [size, zeta potential, % entrapment efficiency (%EE), % transmittance, viscosity, refractive index, extrudability, polydispersity (PDI), morphology, and pH]. An in vitro drug release study was conducted for comparison between DS (drug suspension) and MNE11. In vitro hemolysis was studied at two different concentrations (0.625 and 2.5 μg/mL). Permeation profiles were generated using rat skin. A Draize test was conducted using rabbit to negate irritability issues. Finally, a stability test of MCNE11 was conducted for 12 months. The results showed that MCNE11 (cationic) was the most optimized in term of size, %EE, and PDI. The drug release from MCNE11 was higher compared to DS but comparable to MNE11 (anionic), suggesting no impact of the imposed cationic charge on the release behavior. Moreover, permeation parameters of MCNE11 were significantly (p < 0.05) greater than MNE11, which may be attributed to the combined impact of size (low), surfactant (for reversible changes), and electrostatic interaction (nanoglobules-skin surface). Thus, stable MCN11 possessing high %EE (89.8%), low size (145 nm), maximum flux (5.7 ± 0.1 μg/cm2/h), high drug deposition (932.7 ± 41.6 μg/cm2), optimal viscosity (44.17 ± 0.8 cP), low PDI (0.21), optimal zeta potential (+28.1 mV), and low hemolysis can be promising alternatives to conventional cream to control resistant and recurring types of fungal infections.
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Affiliation(s)
- Mudassar Shahid
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Afzal Hussain
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Azmat Ali Khan
- Pharmaceutical
Biotechnology Laboratory, Department of Pharmaceutical Chemistry,
College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Amer M. Alanazi
- Pharmaceutical
Biotechnology Laboratory, Department of Pharmaceutical Chemistry,
College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ahmed L. Alaofi
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mahboob Alam
- Division
of Chemistry and biotechnology, Dongguk
University, 123 Dongdae-Ro, Gyeongju, 38066, The Republic of Korea
| | - Mohhammad Ramzan
- Department
of Pharmaceutics, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Jalandhar, Punjab 144411, India
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Ultrasonication induced synthesis of TPGS stabilized clove oil nanoemulsions and their synergistic effect against breast cancer cells and harmful bacteria. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118130] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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7
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Koroleva MY, Yurtov EV. Ostwald ripening in macro- and nanoemulsions. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4962] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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Making Concentrated Pterostilbene Highly Bioavailable in Pressure Processed Phospholipid Nanoemulsion. Processes (Basel) 2021. [DOI: 10.3390/pr9020294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Pterostilbene, a dimethylether analog of resveratrol, has been found to have potent biological activity. However, the bioavailability of pterostilbene in the biological system is limited due to its poor solubility in an aqueous environment. A nanoemulsion system was designed for this purpose. Lecithin-based nanoemulsion was formed after 3 cycles through a high-pressure homogenizer at 500 psi. The rheological properties and particle size were measured using dynamic light scattering and a viscometer. The storage stabilities of the prepared formulation were determined based on its ability to maintain its particle size and loading concentration. According to the experimental results, the lecithin-based nanoemulsion system contained approximately 9.5% of pterostilbene. Over the 28-day stability test, the particle size, zeta potential, and encapsulation of pterostilbene in the nanoemulsion did not change significantly, indicating good storage stability. The positive effect of the prepared nanoemulsion system on bioavailability was studied and confirmed using in vitro lipolysis and a caco-2 monolayer model.
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9
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Reverse Coarsening and the Control of Particle Size Distribution through Surfactant. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10155359] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The minimization of surface area, as a result of the minimization of (positive) surface energy, is a well-known driving force behind the spontaneous broadening of (nano) particle size distribution. We show that surfactant molecules binding to particle surfaces effectively decrease the surface energy and may change its sign. In this case, contrary to the expected broadening behavior, a minimum of free energy is achieved at the maximum surface area for all particles, i.e., when the particles are identical. Numerical simulations based on the classical Lifshitz–Slyozov–Wagner theory with surfactant-induced surface energy renormalization confirm the collapse of the particle size distribution. As the particle size evolution is much slower than particle nucleation and growth, the manipulation of surface energy with in-situ replacement of surfactant molecules provides a method for controlling particle size distribution with great potential for creating mono-disperse nanoparticles, a key goal of nanotechnology.
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Artiga-Artigas M, Reichert C, Salvia-Trujillo L, Zeeb B, Martín-Belloso O, Weiss J. Protein/Polysaccharide Complexes to Stabilize Decane-in-Water Nanoemulsions. FOOD BIOPHYS 2020. [DOI: 10.1007/s11483-019-09622-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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12
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13
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Zhang D, Zhang Y, Bai Y, Tai X, Wang W, Wang G. Preparation and Property of Perfluoropolyether Emulsions. Polymers (Basel) 2019; 11:E932. [PMID: 31146424 PMCID: PMC6630538 DOI: 10.3390/polym11060932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/26/2019] [Accepted: 05/14/2019] [Indexed: 11/17/2022] Open
Abstract
Perfluoropolyether (PFPE) glycerol emulsions were prepared. Three different green surfactants (AES (sodium laureth sulfate), APG (alkyl polyglycoside), and SDS (sodium dodecyl sulfate)) were chosen to emulsify the PFPE. Their properties and performance in shampoo were also investigated. Centrifuge stability measurements show that three PFPE emulsions have good stability. They are stable for 60 min when the centrifugal speed is 6000 r/min. In addition, a change of droplet size was observed with time. Moreover, its rheological properties and application performance was studied. The AES emulsion was the most stable emulsion and it was found to improve the slip and lubricity performance of the cotton, so it has potential applications in shampoo.
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Affiliation(s)
- Dianlong Zhang
- Department of Chemistry, Shanxi Datong University, Datong 037009, China.
| | - Yiqiang Zhang
- China Research Institute of Daily Chemical Industry, 34 Wenyuan Street, Taiyuan 030001, China.
| | - Yanyun Bai
- China Research Institute of Daily Chemical Industry, 34 Wenyuan Street, Taiyuan 030001, China.
| | - Xiumei Tai
- China Research Institute of Daily Chemical Industry, 34 Wenyuan Street, Taiyuan 030001, China.
| | - Wanxu Wang
- China Research Institute of Daily Chemical Industry, 34 Wenyuan Street, Taiyuan 030001, China.
| | - Guoyong Wang
- Department of Chemistry, Shanxi Datong University, Datong 037009, China.
- China Research Institute of Daily Chemical Industry, 34 Wenyuan Street, Taiyuan 030001, China.
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14
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Rodriguez-Lopez G, O'Neil Williams Y, Toro-Mendoza J. Individual and Collective Behavior of Emulsion Droplets Undergoing Ostwald Ripening. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:5316-5323. [PMID: 30844290 DOI: 10.1021/acs.langmuir.8b03959] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Ostwald ripening (OR) is the dominating phase separation mechanism in nanoemulsions consisting of the mass exchange between separated droplets by dissolution and absorption of molecules. Here, we propose a model based on a stochastic equation for the mass exchange coupled to a Brownian dynamics algorithm. Our model accounts for the simultaneous gain and loss of mass within a medium, where the presence of sources and sinks leads to a complex distribution of dissolved oil molecules. Also, a criterion for possible nucleation zones based on the definition of a saturation area around the droplets is found. The predictions of the collective behavior are constructed on the individual contributions of each droplet with its own environment. Individual droplets undergoing molecular exchange exhibited anomalous diffusion, whereas when performing the collective analysis, such a behavior was disguised. We used reported experiments under diverse conditions to validate and test the scope of our model, including the modification to the interfacial tension via Gibbs elasticity, finding close agreements. Our results imply that saturation is not conditional for the occurrence of OR. The ability of this model to extend the limitations imposed by traditional treatments to a broader number of physicochemical conditions makes it a useful complementary tool for predicting and understanding experimental results of emulsions experiencing OR.
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Affiliation(s)
- Gieberth Rodriguez-Lopez
- Centro de Estudios Interdisciplinarios de la Fisica , Instituto Venezolano de Investigaciones Cientificas (IVIC) , Caracas 1020 A . Venezuela
| | - Yhan O'Neil Williams
- Centro de Estudios Interdisciplinarios de la Fisica , Instituto Venezolano de Investigaciones Cientificas (IVIC) , Caracas 1020 A . Venezuela
| | - Jhoan Toro-Mendoza
- Centro de Estudios Interdisciplinarios de la Fisica , Instituto Venezolano de Investigaciones Cientificas (IVIC) , Caracas 1020 A . Venezuela
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15
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Mazarei Z, Rafati H. Nanoemulsification of Satureja khuzestanica essential oil and pure carvacrol; comparison of physicochemical properties and antimicrobial activity against food pathogens. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2018.10.094] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Li ZH, Cai M, Liu YS, Sun PL. Development of finger citron (Citrus medica L. var. sarcodactylis) essential oil loaded nanoemulsion and its antimicrobial activity. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.07.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Factors affecting the properties of nitrocellulose emulsions: A comparative study. Carbohydr Polym 2018; 189:267-272. [DOI: 10.1016/j.carbpol.2017.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 11/18/2022]
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18
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Koroleva M, Nagovitsina T, Yurtov E. Nanoemulsions stabilized by non-ionic surfactants: stability and degradation mechanisms. Phys Chem Chem Phys 2018; 20:10369-10377. [PMID: 29611566 DOI: 10.1039/c7cp07626f] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The prevailing opinion in the literature is that the main mechanism of O/W nanoemulsion degradation is Ostwald ripening. Nevertheless, the experimental rates of Ostwald ripening are usually several orders of magnitude higher than the theoretical values. This suggests that other mechanisms, such as coalescence, flocculation and subsequent creaming, significantly influence nanoemulsion breakdown. We investigated O/W nanoemulsions stabilized by Brij 30 or by a mixture of Tween 80 and Span 80 and with liquid paraffin as a dispersed phase. The results indicate that Ostwald ripening is the main process leading to nanoemulsion coarsening only in nanoemulsions with low oil phase fractions of up to 0.05. For quasi-steady state conditions the rates of Ostwald ripening are equal to (1.5 ± 0.3) × 10-29 and (1.1 ± 0.3) × 10-29 m3 s-1 in nanoemulsions with Brij 30 and Tween 80 & Span 80, respectively. In nanoemulsions with oil phase fractions of 0.15-0.45, different mechanisms are identified. Flocculation prevails over other processes during the first days in nanoemulsions stabilized by Brij 30. Coalescence is the main mechanism of nanoemulsion degradation for long times. An increase in droplet size 5-10 days after nanoemulsion preparation due to Ostwald ripening takes place in the case of nanoemulsion stabilization by Tween 80 and Span 80. The stability behavior of these nanoemulsions at later stages is distinctly affected by coalescence and flocculation.
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Affiliation(s)
- M Koroleva
- Mendeleev University of Chemical Technology, Miusskaya pl. 9, Moscow, 125047, Russia.
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19
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Rai VK, Mishra N, Yadav KS, Yadav NP. Nanoemulsion as pharmaceutical carrier for dermal and transdermal drug delivery: Formulation development, stability issues, basic considerations and applications. J Control Release 2017; 270:203-225. [PMID: 29199062 DOI: 10.1016/j.jconrel.2017.11.049] [Citation(s) in RCA: 284] [Impact Index Per Article: 40.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/23/2017] [Accepted: 11/29/2017] [Indexed: 12/16/2022]
Abstract
The use of nanoemulsion in augmenting dermal and transdermal effectiveness of drugs has now well established. The development of nanoemulsion based semisolid dosage forms is an active area of present research. However, thickening or liquid-to-semisolid conversion of the nanoemulsions provides opportunities to the formulation scientist to explore novel means of solving instability issues during transformation. Extending knowledge about the explicit role of nature/magnitude of zeta potential, types of emulsifiers and selection of appropriate semisolid bases could place these versatile carriers from laboratory to industrial scale. This article reviews the progressive advancement in the delivery of medicament via nanoemulsion with special reference to the dermal and transdermal administration. It is attempted to explore the most suitable semi solid dosage form for the particular type of nanoemulsion (o/w, w/o and others) and effect of particle size and zeta potential on the delivery of drugs through dermal or transdermal route. Finally, this review also highlights the basic principles and fundamental considerations of nanoemulsion manufacture, application of nanoemulsion based semisolid dosage forms in the dermal/transdermal administration and basic considerations during the nanoemulsion absorption into and through skin.
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Affiliation(s)
- Vineet Kumar Rai
- CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, U.P., India
| | - Nidhi Mishra
- CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, U.P., India
| | - Kuldeep Singh Yadav
- CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, U.P., India
| | - Narayan Prasad Yadav
- CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, U.P., India.
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20
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Sasikumar A, Kamalasanan K. Nanomedicine for prostate cancer using nanoemulsion: A review. J Control Release 2017; 260:111-123. [PMID: 28583444 DOI: 10.1016/j.jconrel.2017.06.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 01/15/2023]
Abstract
Prostate cancer (PCa) is a worldwide issue, with burgeoning rise in prevalence, morbidity and mortality. Targeted drug delivery, a long sort solution in this regard using controlled release (CR) - nanocarriers, is still a challenge. There is an emerging criticism that, the challenges are due to less appreciation for the biological barriers and lack of corresponding newer technologies. Over the years, more understanding about the biological barriers has come with the progress in characterization techniques. Correspondingly, there is a change in opinion about approaches in clinical trial that; focus of the end point need to be shifted towards disease stabilization for these explorative technologies. Currently, there is a requirement to overcome these newly identified challenges to develop newer affordable therapeutics. The ongoing clinical protocol for therapy using CR-nanocarriers is intravenous injection followed by local targeting to cancer site. This is the most accepted protocol and new CR-nanocarriers are being developed to suit this protocol. In this review, recent progress in treatment of PCa using CR-nanocarriers is analyzed with respect to newly identified biological barriers and design challenges. Possibilities of exploring nanoemulsion (NE) platform for targeted drug delivery to PCa are examined. Repurposing of drugs and combination therapy using NE platform targeted to PCa can be explored for design and development of affordable nanomedicine. In 20yrs. from now there expected to be numerous affordable nanomedicine technologies available in market exploring these lines.
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Affiliation(s)
- Aravindsiva Sasikumar
- Department of Pharmaceutics, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham University, Amrita University, AIMS Health Sciences Campus, Kochi, Kerala, India
| | - Kaladhar Kamalasanan
- Department of Pharmaceutics, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham University, Amrita University, AIMS Health Sciences Campus, Kochi, Kerala, India.
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Kaur K, Kumar R, Goel S, Uppal S, Bhatia A, Mehta SK. Physiochemical and cytotoxicity study of TPGS stabilized nanoemulsion designed by ultrasonication method. ULTRASONICS SONOCHEMISTRY 2017; 34:173-182. [PMID: 27773233 DOI: 10.1016/j.ultsonch.2016.05.037] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/21/2016] [Accepted: 05/21/2016] [Indexed: 06/06/2023]
Abstract
The main aim of the present work was to prepare TPGS stabilized D-α-Tocopherol, lemon oil, tween-80, and water nanoemulsion by low cost and highly effective sonication method. The prepared nanoemulsion showed good stability for 60days at variable temperature conditions i.e. 4, 25 and 37°C. The tolerance of the prepared nanoemulsion to salt (50mM-500mM) and pH (pH 2-pH 7.4) was also studied. The morphology and droplet size of pure and quinine loaded nanoemulsion was characterized with transmission electron microscopy. The prepared formulation was transparent and the obtained average particle size ranged between 25nm and 35nm. The nanoemulsion was found to be non toxic. The cell viability study of pure nanoemulsion carried out on Hep G2 cells revealed that the cell viability was 100%. The formulation further exhibited high quinine loading and release capacity with cumulative release up to 76±2% and 65±2% at pH 7.4 and pH 5.5 respectively. The interaction between quinine and vitamins (riboflavin, thiamine and biotin) was also carried out (aqueous medium). The study revealed that riboflavin had strong interaction with quinine and vitamins vis-à-vis thiamine and biotin.
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Affiliation(s)
- Khushwinder Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160 014, India.
| | - Raj Kumar
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160 014, India
| | - Sumit Goel
- Department of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Shivani Uppal
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160 014, India
| | - Alka Bhatia
- Department of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - S K Mehta
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160 014, India
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Roy AN, Benyahia L, Grisel M, Renou F. Shear interfacial viscoelasticity of native and hydrophobically modified xanthan at oil/water interface. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.07.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Development and characterization of promising o/w nanoemulsions containing sweet fennel essential oil and non-ionic sufactants. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.12.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Production and characterization of cosmetic nanoemulsions containing Opuntia ficus-indica (L.) mill extract as moisturizing agent. Molecules 2015; 20:2492-509. [PMID: 25648593 PMCID: PMC6272544 DOI: 10.3390/molecules20022492] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 12/11/2014] [Accepted: 01/06/2015] [Indexed: 02/07/2023] Open
Abstract
This study aimed to produce and characterize an oil in water (O/W) nanoemulsion containing Opuntia ficus-indica (L.) Mill hydroglycolic extract, as well as evaluate its preliminary and accelerated thermal stability and moisturizing efficacy. The formulations containing 0.5% of xanthan gum (FX) and 0.5% of xanthan gum and 1% of Opuntia ficus-indica MILL extract (FXE) were white, homogeneus and fluid in aspect. Both formulations were stable during preliminary and accelerated stability tests. FX and FXE presented a pH compatible to skin pH (4.5–6.0); droplet size varying from 92.2 to 233.6 nm; a polydispersion index (PDI) around 0.200 and a zeta potential from −26.71 to −47.01 mV. FXE was able to increase the water content of the stratum corneum for 5 h after application on the forearm. The O/W nanoemulsions containing 1% of Opuntia ficus-indica (L.) Mill extract presented suitable stability for at least for 60 days. Besides, this formulation was able to increase the water content of stratum corneum, showing its moisturizing efficacy.
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