1
|
Panchal K, Reddy A, Paliwal R, Chaurasiya A. Dynamic intervention to enhance the stability of PEGylated Ibrutinib loaded lipidic nano-vesicular systems: transitioning from colloidal dispersion to lyophilized product. Drug Deliv Transl Res 2024:10.1007/s13346-024-01555-4. [PMID: 38457026 DOI: 10.1007/s13346-024-01555-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2024] [Indexed: 03/09/2024]
Abstract
Liposomes being a promising colloidal system facilitates delivery of drugs with limited pharmacokinetic properties to achieve desirable clinical applications. However, development of a stable liposomal system is always challenging due to multiple complexities involved. Aqueous instability of liposomes and impact of various process and formulation parameters can lead to serious alteration of its therapeutic performance. In the proposed work, the authors aim to develop stable Ibrutinib-loaded liposomes using lyophilization and Quality-by-Design and assess their long-term stability. Ibrutinib-loaded liposomes were developed and optimized using Quality-by-Design technique and were further PEGylated and characterized for the same. Effect of cryoprotectants during lyophilization and other parameters are evaluated to obtain a robust formulation. The stability studies were conducted upto 6 months at various storage conditions to evaluate the effect of lyophilization. The impact of formulation, processing and lyophilization parameters on physicochemical properties of developed liposomal systems were evaluated and are critically discussed. Liquid dispersion exhibited a %degradation of 16-36% at 25 °C/60% RH which was reduced for less than 1% in lyophilized formulation for 6 months. Critical analysis and assessment of various parameters lead to identification of optimum conditions to manufacture this drug product and also opens way forward for further evaluation and translational possibilities.
Collapse
Affiliation(s)
- Kanan Panchal
- Translational Pharmaceutics Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, 500078, Hyderabad, Telangana, India
| | - Akhila Reddy
- Translational Pharmaceutics Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, 500078, Hyderabad, Telangana, India
| | - Rishi Paliwal
- Nanomedicine and Bioengineering Research Laboratory, Department of Pharmacy, Indira Gandhi National Tribal University, Amarkantak, India
| | - Akash Chaurasiya
- Translational Pharmaceutics Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, 500078, Hyderabad, Telangana, India.
| |
Collapse
|
2
|
Carpentieri S, Ferrari G, Donsì F. All-natural wheat gliadin-gum arabic nanocarriers for encapsulation and delivery of grape by-products phenolics obtained through different extraction procedures. Food Chem 2023; 424:136385. [PMID: 37247597 DOI: 10.1016/j.foodchem.2023.136385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/21/2023] [Accepted: 05/13/2023] [Indexed: 05/31/2023]
Abstract
Grape pomace (GP), the major winery by-product, is still rich in phenolic compounds, scarcely applied in food systems due to physicochemical instability issues. This work aimed at fabricating gliadin (G)-based nanoparticles through antisolvent precipitation, for delivery of GP extracts, investigating different extraction strategies with ethanol/water solution (70:30 v/v). Interestingly, the fabricated nanoparticles were characterized by a nanometric size range with hydraulic diameter values around 100 nm and ζ-potential of 18-22 mV. The addition of gum arabic (GA), at the optimized G/GA ratio 1:1, improved particle stability and encapsulation efficiency of GP polyphenols. The two-step extraction of GP in the G-rich solvent retrieved from G extraction, as evidenced by total phenolics (1.24 times higher than the two separately obtained extracts G/GP10:10), HPLC-PDA analysis, encapsulation efficiency (62.9% in terms of epicatechin), and simulated digestion (95.6% release of epicatechin), represented the most promising approach to obtain G nanoparticles for efficient delivery of GP extracts.
Collapse
Affiliation(s)
- Serena Carpentieri
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Giovanna Ferrari
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy; ProdAl Scarl c/o University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Francesco Donsì
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy.
| |
Collapse
|
3
|
Sani MA, Tavassoli M, Azizi-Lalabadi M, Mohammadi K, McClements DJ. Nano-enabled plant-based colloidal delivery systems for bioactive agents in foods: Design, formulation, and application. Adv Colloid Interface Sci 2022; 305:102709. [PMID: 35640316 DOI: 10.1016/j.cis.2022.102709] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 05/20/2022] [Accepted: 05/21/2022] [Indexed: 12/21/2022]
Abstract
Consumers are becoming increasingly aware of the impact of their dietary choices on the environment, animal welfare, and health, which is causing many of them to adopt more plant-based diets. For this reason, many sectors of the food industry are reformulating their products to contain more plant-based ingredients. This article describes recent research on the formation and application of nano-enabled colloidal delivery systems formulated from plant-based ingredients, such as polysaccharides, proteins, lipids, and phospholipids. These delivery systems include nanoemulsions, solid lipid nanoparticles, nanoliposomes, nanophytosomes, and biopolymer nanoparticles. The composition, size, structure, and charge of the particles in these delivery systems can be manipulated to create novel or improved functionalities, such as improved robustness, higher optical clarity, controlled release, and increased bioavailability. There have been major advances in the design, assembly, and application of plant-based edible nanoparticles within the food industry over the past decade or so. As a result, there are now a wide range of different options available for creating delivery systems for specific applications. In the future, it will be important to establish whether these formulations can be produced using economically viable methods and provide the desired functionality in real-life applications.
Collapse
Affiliation(s)
- Mahmood Alizadeh Sani
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Milad Tavassoli
- Student's Research Committee, Department of Food Science and Technology, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Azizi-Lalabadi
- Research Center for Environmental Determinants of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Keyhan Mohammadi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | | |
Collapse
|
4
|
Marques Mandaji C, da Silva Pena R, Campos Chisté R. Encapsulation of bioactive compounds extracted from plants of genus Hibiscus: A review of selected techniques and applications. Food Res Int 2022; 151:110820. [PMID: 34980372 DOI: 10.1016/j.foodres.2021.110820] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 09/24/2021] [Accepted: 11/21/2021] [Indexed: 11/16/2022]
Abstract
The genus Hibiscus includes more than 250 species, and many studies showed that these plants contain bioactive compounds with technological potential to be used in the development of functional foods. However, the instability of these compounds during typical food processing conditions, such as exposure to high temperatures, pH changes and presence of light and oxygen have stimulated the use of encapsulation techniques to increase their stability and applicability. Among the existing Hibiscus species, only H. sabdariffa, H. cannabinus, and H. acetosella have been investigated in encapsulation studies, being spray drying the most common method approached. Considering the high technological potential offered by the incorporation of encapsulated bioactive compounds from plants of the genus Hibiscus in food formulations, this review discusses key information of selected encapsulation techniques, which represents promising alternatives to increase food systems' stability and stimulate the design of new functional foods. Relevant gaps in the literature were also noticed, mainly the lack of systematic studies regarding the composition of bioactive compounds after encapsulation, instead of total determinations, and biological activities in different analytical systems, such as antioxidant, antimicrobial and anti-inflammatory properties as well as bioaccessibility and bioavailability.
Collapse
Affiliation(s)
- Carolina Marques Mandaji
- Graduate Program of Food Science and Technology, Institute of Technology, Federal University of Pará (UFPA), 66075-110 Belém, Pará, Brazil
| | - Rosinelson da Silva Pena
- Graduate Program of Food Science and Technology, Institute of Technology, Federal University of Pará (UFPA), 66075-110 Belém, Pará, Brazil; Faculty of Food Engineering, Institute of Technology, Federal University of Pará (UFPA), 66075-110 Belém, Pará, Brazil
| | - Renan Campos Chisté
- Graduate Program of Food Science and Technology, Institute of Technology, Federal University of Pará (UFPA), 66075-110 Belém, Pará, Brazil; Faculty of Food Engineering, Institute of Technology, Federal University of Pará (UFPA), 66075-110 Belém, Pará, Brazil.
| |
Collapse
|
5
|
Du Q, Zhou L, Lyu F, Liu J, Ding Y. The complex of whey protein and pectin: Interactions, functional properties and applications in food colloidal systems - A review. Colloids Surf B Biointerfaces 2021; 210:112253. [PMID: 34883341 DOI: 10.1016/j.colsurfb.2021.112253] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 10/19/2022]
Abstract
This review describes the mechanism of non-covalent/covalent interaction of whey protein-pectin (WPP) complexes, including electrostatic interaction, steric hindrance, cross-linking and Maillard reaction. The interaction between whey protein and pectin determines the form of the complex in the system, i.e. co-dissolution, precipitation, separation, complex coacervation and compounding. The interaction of WPP is affected by environmental conditions and its own properties, including several factors such as pH, polymer concentration and ratio, temperature, and ionic strength. In addition, the functional properties of WPP complexes are discussed through illustrative examples. The complexes with good emulsification, heat stability, gelling properties and biological activity have promising application prospects. WPP complexes have been widely studied for application in food colloidal systems, including protein beverages, delivery systems for bioactive substances, fat substitutes and food preservation films/coatings. The understanding of the interaction and functional properties of WPP complexes provides theoretical support for the improvement and design of new food colloidal systems.
Collapse
Affiliation(s)
- Qiwei Du
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China; Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province, Hangzhou 310014, PR China; National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, PR China
| | - Linhui Zhou
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China; Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province, Hangzhou 310014, PR China; National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, PR China
| | - Fei Lyu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China; Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province, Hangzhou 310014, PR China; National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, PR China
| | - Jianhua Liu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China; Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province, Hangzhou 310014, PR China; National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, PR China.
| | - Yuting Ding
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China; Key Laboratory of Marine Fishery Resources Exploitation & Utilization of Zhejiang Province, Hangzhou 310014, PR China; National R & D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, PR China.
| |
Collapse
|
6
|
Silva B, São Braz B, Delgado E, Gonçalves L. Colloidal nanosystems with mucoadhesive properties designed for ocular topical delivery. Int J Pharm 2021; 606:120873. [PMID: 34246741 DOI: 10.1016/j.ijpharm.2021.120873] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/26/2021] [Accepted: 07/06/2021] [Indexed: 12/13/2022]
Abstract
Over the last years, the scientific interest about topical ocular delivery targeting the posterior segment of the eye has been increasing. This is probably due to the fact that this is a non-invasive administration route, well tolerated by patients and with fewer local and systemic side effects. However, it is a challenging task due to the external ocular barriers, tear film clearance, blood flow in the conjunctiva and choriocapillaris and due to the blood-retinal barriers, amongst other features. An enhanced intraocular bioavailability of drugs can be achieved by either improving corneal permeability or by improving precorneal retention time. Regarding this last option, increasing residence time in the precorneal area can be achieved using mucoadhesive polymers such as xyloglucan, poly(acrylate), hyaluronic acid, chitosan, and carbomers. On the other hand, colloidal particles can interact with the ocular mucosa and enhance corneal and conjunctival permeability. These nanosystems are able to deliver a wide range of drugs, including macromolecules, providing stability and improving ocular bioavailability. New pharmaceutical approaches based on nanotechnology associated to bioadhesive compounds have emerged as strategies for a more efficient treatment of ocular diseases. Bearing this in mind, this review provides an overview of the current mucoadhesive colloidal nanosystems developed for ocular topical administration, focusing on their advantages and limitations.
Collapse
Affiliation(s)
- Beatriz Silva
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Portugal; CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Portugal.
| | - Berta São Braz
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Portugal.
| | - Esmeralda Delgado
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Portugal.
| | - Lídia Gonçalves
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Portugal.
| |
Collapse
|
7
|
Serve O, Choblet H, Livadaris V, Korb JP. Probing hydrocarbon dynamics at asphaltene/maltene interfaces for the global characterization of bitumen. J Colloid Interface Sci 2021; 593:21-31. [PMID: 33730653 DOI: 10.1016/j.jcis.2021.02.076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 11/21/2022]
Abstract
HYPOTHESIS The objective is to noninvasively probe the local hydrocarbon dynamics at asphaltene/maltene interfaces to reveal the global characteristics of bitumen at increasing temperatures and under various mechanical constraints. EXPERIMENTS We propose multidimensional (1D and 2D) nuclear magnetic relaxation (NMR) experiments to characterize the dynamic properties of hydrocarbons for a set of bitumen from 40 to 180 °C. The convergence towards universal theoretical modelling of NMR relaxation experiments gives a comprehensive understanding of hydrocarbon transport in these very weakly permeable samples. Moreover, a multivariate statistical analysis allows for correlating these NMR relaxation data for all bitumen samples to the main empirical parameters by qualifying the bitumen grading, such as the penetrability, softening and fragility points over a large range of temperatures. FINDINGS These new experimental and theoretical multiscale approaches link hydrocarbon interfacial dynamics to the global characteristics of various bitumen types. This is critical for grading these universally encountered materials.
Collapse
|
8
|
Bagatolli LA, Mangiarotti A, Stock RP. Cellular metabolism and colloids: Realistically linking physiology and biological physical chemistry. Prog Biophys Mol Biol 2021; 162:79-88. [PMID: 32565181 DOI: 10.1016/j.pbiomolbio.2020.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/25/2020] [Accepted: 06/02/2020] [Indexed: 11/22/2022]
Abstract
Important concepts from colloidal physical chemistry such as coacervation, phase transitions, emergent properties and ionic association, are currently emerging in the lexicon of cellular biology, prompted mostly by recent experimental observations of liquid phase coexistence in the cell cytosol. Nevertheless, from an historical point of view, the application of these concepts in cell biology is not new. They were key concepts into the so-called protoplasmic doctrine, an alternative (and largely forgotten) approach to cell physiology. The most complete theory originating from this line of thinking was the Association-Induction Hypothesis (AIH), introduced by Gilbert N. Ling in 1962. The AIH, which envisions living cells as complex dynamical colloidal systems, provides ample theory and experimental evidence to call into question the now dominant view of living cells as fluid-filled vesicles. This review attempts to present and discuss the usefulness of the AIH to understand a series of experimental observations from our laboratory from living suspensions of the yeast Saccharomyces cerevisiae exhibiting glycolytic oscillations. Particularly, the AIH helped us integrate, in a mechanistic sense, the basis of a strong temporal coupling observed between ATP and a series of cellular properties such as intracellular water dipolar relaxation, intracellular K+ concentration, among many others, where the colloidal physical chemistry of the cell interior plays a fundamental role.
Collapse
|
9
|
Soares LDS, Milião GL, Tonole B, de Souza GB, Soares NDFF, Teixeira AVNDC, Coimbra JSDR, de Oliveira EB. Chitosan dispersed in aqueous solutions of acetic, glycolic, propionic or lactic acid as a thickener/stabilizer agent of O/W emulsions produced by ultrasonic homogenization. Ultrason Sonochem 2019; 59:104754. [PMID: 31479885 DOI: 10.1016/j.ultsonch.2019.104754] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/08/2019] [Accepted: 08/25/2019] [Indexed: 06/10/2023]
Abstract
Chitosan is a natural polycationic polysaccharide with several known biotechnological functionalities, but its application in food products as ingredient or additive remains nowadays unusual. Additionally, ultrasonic production of food-grade emulsions is still an open research field, so ultrasound applicability for such purpose must be evaluated case by case. In this study, chitosan was dispersed in acid aqueous media containing acetic, glycolic, propionic or lactic acid (50 mmol·L-1), then added of the emulsifier Tween 20, and finally mixed to sunflower oil, through ultrasonic homogenization (20 kHz, 500 W, 4 min), in order to prepare O/W emulsions (oil fraction = 0.25). In all studied systems, oil droplets with average hydrodynamic diameter < 600 nm were obtained. The increase of chitosan concentration promoted the augment in consistency and the elastic character of the emulsions. Emulsions containing more than 0.500 g·(100 g)-1 of chitosan presented a minor increase of both oil droplets average hydrodynamic diameter and PDI, during storage for 28 days. Furthermore, such systems showed no phase separation when exposed to centrifugation, freeze-thawing, and freeze-thaw-heating cycles. Two main findings may be highlighted from this study: i) ultrasound processing is a promising approach to produce food-grade emulsified systems containing chitosan, and ii) chitosan is a suitable alternative as thickener/stabilizer for acidic emulsions, being its performance influenced by the biopolymer concentration and not by the organic acid present in the medium.
Collapse
Affiliation(s)
- Lucas de Souza Soares
- Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa (UFV), Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
| | - Gustavo Leite Milião
- Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa (UFV), Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil
| | - Bruna Tonole
- Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa (UFV), Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil
| | - Gabriel Batalha de Souza
- Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa (UFV), Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil
| | - Nilda de Fátima Ferreira Soares
- Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa (UFV), Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil
| | | | - Jane Sélia Dos Reis Coimbra
- Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa (UFV), Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil
| | - Eduardo Basílio de Oliveira
- Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa (UFV), Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
| |
Collapse
|
10
|
Lago AMT, Neves ICO, Oliveira NL, Botrel DA, Minim LA, de Resende JV. Ultrasound-assisted oil-in-water nanoemulsion produced from Pereskia aculeata Miller mucilage. Ultrason Sonochem 2019; 50:339-353. [PMID: 30287179 DOI: 10.1016/j.ultsonch.2018.09.036] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 09/10/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
For the preparation of nanoemulsions, the correct choice of emulsifiers, together with the emulsification methods, directly influences the final product quality. The present study reports the ultrasound-assisted preparation of oil-in-water nanoemulsions produced with mucilage extracted from leaves of Pereskia aculeata Miller (ora-pro-nobis; OPN). The OPN mucilage (%) and soybean oil (%) concentration range, and the process operating parameters, ultrasonic power amplitude (%) and sonication time (min), were optimized based on the mean droplet diameter (d32). The effect of the mucilage and oil concentrations was also investigated by the response variables such as polydispersity, density, turbidity, viscosity, zeta-potential, and interfacial tension. The higher OPN mucilage concentrations (%) with lower amounts of soybean oil (%) favored nanoemulsion formations (116 ≤ d32 ≤ 171 nm) and increased polydispersity, density, and zeta-potential. On increasing OPN mucilage and soybean oil the turbidity of the dispersions increased. All colloidal systems showed Newtonian behavior, and the viscosity in the systems increased due to the greater OPN mucilage concentration in the aqueous phase at a certain oil concentration. In addition, lower values of equilibrium interfacial tension were found with increasing OPN mucilage concentrations. Finally, from the stability test, it can be pointed out that the OPN mucilage concentration should be between 1.0 and 1.5% and the oil concentration should be less than 5%, so that lower d32 values are maintained over time. Therefore, mucilage extracted from OPN and the ultrasound technique can be used in the preparation of nanoemulsions.
Collapse
Affiliation(s)
- Amanda Maria Teixeira Lago
- Federal University of Lavras, Department of Food Science, Laboratory of Food Refrigeration, P.O. Box 3037, 37200-000 Lavras, Minas Gerais, Brazil.
| | - Isabelle Cristina Oliveira Neves
- Federal University of Lavras, Department of Food Science, Laboratory of Food Refrigeration, P.O. Box 3037, 37200-000 Lavras, Minas Gerais, Brazil
| | - Natália Leite Oliveira
- Federal University of Lavras, Department of Food Science, Laboratory of Food Refrigeration, P.O. Box 3037, 37200-000 Lavras, Minas Gerais, Brazil
| | - Diego Alvarenga Botrel
- Federal University of Lavras, Department of Food Science, Packaging Laboratory, P.O. Box 3037, 37200-000 Lavras, Minas Gerais, Brazil
| | - Luis Antonio Minim
- Federal University of Viçosa, Department of Food Technology, Av. Peter Henry Rolfs, s/n - Campus Universitário, Viçosa, MG 36570-900, Brazil
| | - Jaime Vilela de Resende
- Federal University of Lavras, Department of Food Science, Laboratory of Food Refrigeration, P.O. Box 3037, 37200-000 Lavras, Minas Gerais, Brazil.
| |
Collapse
|
11
|
da Silva Porto FG, Campos ÂD, Garcia ITS. Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan: physicochemical properties of the solution and films. Environ Sci Pollut Res Int 2019; 26:672-683. [PMID: 30414023 DOI: 10.1007/s11356-018-3590-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/23/2018] [Indexed: 06/08/2023]
Abstract
The pyroligneous liquor is a product obtained during the production of charcoal, with well-known antimicrobial activity. In this work, we characterized the physical chemistry properties of a formulation composed of distilled pyroligneous liquor (DPL), obtained from Eucalyptus grandis, and chitosan. A good interaction between the polymer and the solvent was observed. Auto-supported films were prepared with these systems and characterized with respect to their structure and photo-protection properties, water vapor permeability, and resistance to water and to thermal degradation. They present a semi-crystalline structure and are hygroscopic, but are stable under immersion for up to 7 days. The swelling degree in water is 300% in weight and the permeability to water vapor was between 30 and 45 g m-1 h-1 (for films with 80 to 10 μm, respectively). The obtained films are able to efficiently block the incident UVB and UVC radiation; the molar absorptivity decreases exponentially with increasing wavelength and is stable up to 300 °C. These properties confer desirable properties to the films, obtained from these precursors of a renewable source, to be used as coatings.
Collapse
Affiliation(s)
- Fabiane Grecco da Silva Porto
- Laboratório de Fisiologia Vegetal, Embrapa Clima Temperado, Br 392, Km 78, caixa postal 403, Pelotas, 96010-971, Brazil
| | - Ângela Diniz Campos
- Laboratório de Fisiologia Vegetal, Embrapa Clima Temperado, Br 392, Km 78, caixa postal 403, Pelotas, 96010-971, Brazil
| | - Irene Teresinha Santos Garcia
- Departamento de Físico-Química, Instituto de Química, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, Porto Alegre, RS, 91501-970, Brazil.
| |
Collapse
|
12
|
Streck L, Sarmento VHV, de Menezes RPRPB, Fernandes-Pedrosa MF, Martins AMC, da Silva-Júnior AA. Tailoring microstructural, drug release properties, and antichagasic efficacy of biocompatible oil-in-water benznidazol-loaded nanoemulsions. Int J Pharm 2019; 555:36-48. [PMID: 30448310 DOI: 10.1016/j.ijpharm.2018.11.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 11/12/2018] [Accepted: 11/15/2018] [Indexed: 12/25/2022]
Abstract
This study explored the transition of lamellar-type liquid crystal (LLC) to biocompatible oil-in-water nanoemulsions able to modify benznidazole (BNZ) release and target the drug to cells infected with the T. cruzi parasite. Three cosolvents (2methylpyrrolidone [NMP], polyethylene glycol [POL], and propylene glycol [PRO] were tested to induce the transition of anisotropic LLC systems to isotropic nanoemulsions. Mixtures of soy phosphatidylcholine with sodium oleate stabilized the dispersions of medium chain triglyceride in water. Rheological measurements, polarized microscopy, and small angle X-ray scattering demonstrated that there is a phase transition from LLC to desired nanoemulsions. These small and narrow droplet-sized nanocarriers exhibited some advantages and promising features, such as the enhanced BNZ aqueous solubility and slow drug release rate. In vitro cell biocompatibility of formulations was assessed in the Vero E6 and SiHa cell lines. Drug-loaded nanoemulsions inhibited the epimastigote growth of the T. cruzi parasite (IC50 0.208 ± 0.052 μg mL-1) and reduced its infective life form trypomastigote (IC50 0.392 ± 0.107 μg mL-1). The oil-in-water nanoemulsions were demonstrated as promising biocompatible liquid drug delivery systems capable of improving the BNZ trypanocidal activity for the treatment of Chagas disease.
Collapse
|