101
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Jowkarderis L, van de Ven TGM. Mesh size analysis of cellulose nanofibril hydrogels using solute exclusion and PFG-NMR spectroscopy. SOFT MATTER 2015; 11:9201-9210. [PMID: 26417984 DOI: 10.1039/c5sm01752a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The pore structure of TEMPO-mediated oxidized CNF hydrogels, chemically cross-linked with water-soluble diamines, is studied. A solute exclusion method and pulsed-field-gradient NMR are used to estimate the mesh size distribution in the gel network in its hydrated state. Dextran fractions with the nominal molecular weights in the range of 10-2000 kDa are used as probes. The results show a nonuniform network structure, consisting of a group of large openings that contain ∼50% of water, and regions with a more compact structure and smaller mesh units that restrict the diffusivity of the dextran molecules. A biexponential model is proposed for the NMR echo amplitude decay due to the probe diffusion into the gel network. A typical single exponential model does not fit the experimental data when the probe molecular size is comparable to the network mesh size. The results obtained with NMR, using the proposed biexponential model, are in very good agreement with those determined with solute exclusion. Precise mesh size estimation with solute exclusion using pore models is subject to restrictions, and vary with the assumed pore geometry. The average mesh size obtained using a spherical pore model, ∼35 nm, in the compact regions of the hydrogel, is in good agreement with the theoretical value in a network of rodlike particles. Neglecting the wall effects leads to underestimation of the mesh size with both techniques.
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Affiliation(s)
- Leila Jowkarderis
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Theo G M van de Ven
- Pulp & Paper Research Center and Department of Chemistry, McGill University, Montreal, Quebec H3A 2A7, Canada.
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102
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Understanding Critical Quality Attributes for Nanocrystals from Preparation to Delivery. Molecules 2015; 20:22286-300. [PMID: 26703528 PMCID: PMC6332140 DOI: 10.3390/molecules201219851] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 12/08/2015] [Accepted: 12/08/2015] [Indexed: 12/28/2022] Open
Abstract
Poor solubility of active pharmaceutical ingredients (APIs) is a great challenge for the pharmaceutical industry and, hence, drug nanocrystals are widely studied as one solution to overcome these solubility problems. Drug nanocrystals have comparatively simple structures which make them attractive for the formulation for poorly soluble drugs, and their capability to improve the dissolution in vitro is easily demonstrated, but turning the in vitro superior properties of nanocrystals to success in vivo, is often demanding: controlled (including enhanced) drug dissolution followed by successful permeation is not guaranteed, if for example, the dissolved drug precipitates before it is absorbed. In this review critical quality attributes related to nanocrystal formulations from production to final product performance in vivo are considered. Many important parameters exist, but here physical stability (aggregation tendency and solid state form), solubility properties influencing dissolution and supersaturation, excipient use to promote the maintenance of supersaturation, and finally the fate of nanocrystals in vivo are the main subjects of our focus.
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103
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George J, Sabapathi SN. Cellulose nanocrystals: synthesis, functional properties, and applications. Nanotechnol Sci Appl 2015; 8:45-54. [PMID: 26604715 PMCID: PMC4639556 DOI: 10.2147/nsa.s64386] [Citation(s) in RCA: 307] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Cellulose nanocrystals are unique nanomaterials derived from the most abundant and almost inexhaustible natural polymer, cellulose. These nanomaterials have received significant interest due to their mechanical, optical, chemical, and rheological properties. Cellulose nanocrystals primarily obtained from naturally occurring cellulose fibers are biodegradable and renewable in nature and hence they serve as a sustainable and environmentally friendly material for most applications. These nanocrystals are basically hydrophilic in nature; however, they can be surface functionalized to meet various challenging requirements, such as the development of high-performance nanocomposites, using hydrophobic polymer matrices. Considering the ever-increasing interdisciplinary research being carried out on cellulose nanocrystals, this review aims to collate the knowledge available about the sources, chemical structure, and physical and chemical isolation procedures, as well as describes the mechanical, optical, and rheological properties, of cellulose nanocrystals. Innovative applications in diverse fields such as biomedical engineering, material sciences, electronics, catalysis, etc, wherein these cellulose nanocrystals can be used, are highlighted.
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Affiliation(s)
- Johnsy George
- Food Engineering and Packaging Division, Defence Food Research Laboratory, Siddarthanagar, Mysore, Karnataka, India
| | - S N Sabapathi
- Food Engineering and Packaging Division, Defence Food Research Laboratory, Siddarthanagar, Mysore, Karnataka, India
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104
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Lavoine N, Desloges I, Manship B, Bras J. Antibacterial paperboard packaging using microfibrillated cellulose. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2015; 52:5590-600. [PMID: 26344972 PMCID: PMC4554627 DOI: 10.1007/s13197-014-1675-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 11/28/2014] [Accepted: 12/02/2014] [Indexed: 11/29/2022]
Abstract
The industry and consumers are focusing more and more on the development of biodegradable and lightweight food-packaging materials, which could better preserve the quality of the food and improve its shelf-life. In an attempt to meet these requirements, this study presents a novel bio-substrate able to contain active bio-molecules for future food-packaging applications. Based on a paperboard substrate, the development of an antibacterial bio-packaging material is, therein, achieved using a chlorhexidine digluconate (CHX) solution as a model of an antibacterial molecule, mixed with microfibrillated cellulose (MFC) and used as coating onto paperboard samples. AFM and FE-SEM analyses were performed to underline the nanoporous MFC network able to trap and to progressively release the CHX molecules. The release study of CHX was conducted in an aqueous medium and showed a lower proportion (20 %) of CHX released when using MFC. This led to the constant release of low amounts of CHX over 40 h. Antibacterial tests were carried out to assess the preservation of the antibacterial activity of the samples after the release studies. Samples remained active against Bacillus subtilis, with better results being obtained when MFC was used. The preservation of the quality of a model food was finally evaluated paving the way for future promising applications in the food packaging industry.
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Affiliation(s)
- Nathalie Lavoine
- Laboratoire Génie des Procédés Papetiers (LGP2), UMR CNRS 5518, CS 10065, Grenoble INP-Pagora – 461, Rue de la Papeterie, 38402 Saint Martin D’Hères Cedex, France
| | - Isabelle Desloges
- Laboratoire Génie des Procédés Papetiers (LGP2), UMR CNRS 5518, CS 10065, Grenoble INP-Pagora – 461, Rue de la Papeterie, 38402 Saint Martin D’Hères Cedex, France
| | - Brigitte Manship
- Laboratoire Génie des Procédés Papetiers (LGP2), UMR CNRS 5518, CS 10065, Grenoble INP-Pagora – 461, Rue de la Papeterie, 38402 Saint Martin D’Hères Cedex, France
| | - Julien Bras
- Laboratoire Génie des Procédés Papetiers (LGP2), UMR CNRS 5518, CS 10065, Grenoble INP-Pagora – 461, Rue de la Papeterie, 38402 Saint Martin D’Hères Cedex, France
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105
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Hua K, Ålander E, Lindström T, Mihranyan A, Strømme M, Ferraz N. Surface Chemistry of Nanocellulose Fibers Directs Monocyte/Macrophage Response. Biomacromolecules 2015; 16:2787-95. [DOI: 10.1021/acs.biomac.5b00727] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kai Hua
- Nanotechnology
and Functional Materials, Department of Engineering Sciences, Uppsala University, Box
534, 75121 Uppsala, Sweden
| | - Eva Ålander
- Innventia AB, Drottning Kristinas
väg 55, 11486 Stockholm, Sweden
| | - Tom Lindström
- Innventia AB, Drottning Kristinas
väg 55, 11486 Stockholm, Sweden
| | - Albert Mihranyan
- Nanotechnology
and Functional Materials, Department of Engineering Sciences, Uppsala University, Box
534, 75121 Uppsala, Sweden
| | - Maria Strømme
- Nanotechnology
and Functional Materials, Department of Engineering Sciences, Uppsala University, Box
534, 75121 Uppsala, Sweden
| | - Natalia Ferraz
- Nanotechnology
and Functional Materials, Department of Engineering Sciences, Uppsala University, Box
534, 75121 Uppsala, Sweden
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106
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Xie L, Beyer S, Vogel V, Wacker MG, Mäntele W. Assessing the drug release from nanoparticles: Overcoming the shortcomings of dialysis by using novel optical techniques and a mathematical model. Int J Pharm 2015; 488:108-19. [DOI: 10.1016/j.ijpharm.2015.03.080] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 03/30/2015] [Accepted: 03/31/2015] [Indexed: 12/21/2022]
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107
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dos Santos MA, Grenha A. Polysaccharide nanoparticles for protein and Peptide delivery: exploring less-known materials. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2015; 98:223-61. [PMID: 25819281 DOI: 10.1016/bs.apcsb.2014.11.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Finding adequate carriers for protein and peptide delivery has become an urgent need, owing to the growing number of macromolecules identified as having therapeutic potential. Nanoparticles have emerged in the field as very promising vehicles and much work has been directed to testing the capacity of different materials to compose the matrix of these carriers. Natural materials and, specifically, polysaccharides have been taking the forefront of the challenge, because of several favoring properties that include the higher propensity to exhibit biodegradability and biocompatibility, and also the high structural flexibility. The majority of works found in the literature regarding polysaccharide nanoparticles uses very popular materials like chitosan or hyaluronic acid. This review is aimed at describing and exploring the potential of polysaccharides that are not so well known or that are less explored. For those, the main properties will be described, together with an overview of the reported applications as nanoparticle matrix materials.
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Affiliation(s)
- Marlise A dos Santos
- Joan-Vernikos Aerospace Pharmacy Laboratory, School of Pharmacy, Microgravity Centre, Pontifical Catholic University of Rio Grande do Sul PUCRS, Porto Alegre, Brazil
| | - Ana Grenha
- CBME-Centre for Molecular and Structural Biomedicine/IBB-Institute for Biotechnology and Bioengineering, Faculty of Sciences and Technology, University of Algarve, Campus de Gambelas, Faro, Portugal.
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108
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Xiao S, Gao R, Lu Y, Li J, Sun Q. Fabrication and characterization of nanofibrillated cellulose and its aerogels from natural pine needles. Carbohydr Polym 2015; 119:202-9. [DOI: 10.1016/j.carbpol.2014.11.041] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Revised: 11/11/2014] [Accepted: 11/19/2014] [Indexed: 10/24/2022]
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109
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Liu K, Chen L, Huang L, Ni Y, Sun B. Enhancing antibacterium and strength of cellulosic paper by coating triclosan-loaded nanofibrillated cellulose (NFC). Carbohydr Polym 2015; 117:996-1001. [DOI: 10.1016/j.carbpol.2014.10.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 10/07/2014] [Accepted: 10/09/2014] [Indexed: 11/28/2022]
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110
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Wan C, Lu Y, Jiao Y, Jin C, Sun Q, Li J. Ultralight and hydrophobic nanofibrillated cellulose aerogels from coconut shell with ultrastrong adsorption properties. J Appl Polym Sci 2015. [DOI: 10.1002/app.42037] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Caichao Wan
- Material Science and Engineering College; Northeast Forestry University; Harbin 150040 China
| | - Yun Lu
- Research Institute of Wood Industry; Chinese Academy of Forestry; Beijing 100091 China
| | - Yue Jiao
- Material Science and Engineering College; Northeast Forestry University; Harbin 150040 China
| | - Chunde Jin
- School of Engineering; Zhejiang Agricultural and Forestry University; Lin'an 311300 China
| | - Qingfeng Sun
- School of Engineering; Zhejiang Agricultural and Forestry University; Lin'an 311300 China
| | - Jian Li
- Material Science and Engineering College; Northeast Forestry University; Harbin 150040 China
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111
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Misra R, Upadhyay M, Perumal V, Mohanty S. In vitro control release, cytotoxicity assessment and cellular uptake of methotrexate loaded liquid-crystalline folate nanocarrier. Biomed Pharmacother 2015; 69:102-10. [DOI: 10.1016/j.biopha.2014.11.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 11/09/2014] [Indexed: 01/20/2023] Open
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112
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Yang J, Han S, Zheng H, Dong H, Liu J. Preparation and application of micro/nanoparticles based on natural polysaccharides. Carbohydr Polym 2015; 123:53-66. [PMID: 25843834 DOI: 10.1016/j.carbpol.2015.01.029] [Citation(s) in RCA: 154] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Revised: 12/13/2014] [Accepted: 01/16/2015] [Indexed: 02/08/2023]
Abstract
Polysaccharides have attracted more and more attentions and been recognized to be the most promising materials in recent years because of their outstanding merits such as easily available, non-toxic, biocompatible, biodegradable, and easily modified. Considerable research efforts have been directed toward developing polysaccharides-based micro/nanoparticles (PM/NPs). The new major studies of PM/NPs over the past few years are outlined in this review. Methods of preparation, including self-assembly, ionic-gelation, complex coacervation, emulsification, and desolvation method and some others, are summarized. Different applications of PM/NPs in the field of drug-delivery system are highlighted. Besides, another novel application of PM/NPs that are used as emulsifiers to stabilize Pickering emulsion is also introduced. These environmental-friendly particle emulsifiers have received reasonable attention due to their novel applications, especially in food, cosmetics, and pharmaceutics. From literature surveys, we realized that studies on PM/NP systems for different applications have increased rapidly. Hence, the present review is timely.
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Affiliation(s)
- Jisheng Yang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Suya Han
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Haicheng Zheng
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Hongbiao Dong
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jiubing Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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113
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Zhao J, Lu C, He X, Zhang X, Zhang W, Zhang X. Polyethylenimine-Grafted Cellulose Nanofibril Aerogels as Versatile Vehicles for Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2015; 7:2607-15. [PMID: 25562313 DOI: 10.1021/am507601m] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jiangqi Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Canhui Lu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Xu He
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Xiaofang Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Wei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Ximu Zhang
- State Key Laboratory of Oral Disease, West China Hospital
of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Preventive Dentistry, West China Hospital
of Stomatology, Sichuan University, Chengdu 610041, China
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114
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Applications of hydrophobins: current state and perspectives. Appl Microbiol Biotechnol 2015; 99:1587-97. [PMID: 25564034 DOI: 10.1007/s00253-014-6319-x] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 12/08/2014] [Accepted: 12/09/2014] [Indexed: 01/07/2023]
Abstract
Hydrophobins are proteins exclusively produced by filamentous fungi. They self-assemble at hydrophilic-hydrophobic interfaces into an amphipathic film. This protein film renders hydrophobic surfaces of gas bubbles, liquids, or solid materials wettable, while hydrophilic surfaces can be turned hydrophobic. These properties, among others, make hydrophobins of interest for medical and technical applications. For instance, hydrophobins can be used to disperse hydrophobic materials; to stabilize foam in food products; and to immobilize enzymes, peptides, antibodies, cells, and anorganic molecules on surfaces. At the same time, they may be used to prevent binding of molecules. Furthermore, hydrophobins have therapeutic value as immunomodulators and can been used to produce recombinant proteins.
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115
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Liu J, Willför S, Xu C. A review of bioactive plant polysaccharides: Biological activities, functionalization, and biomedical applications. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.bcdf.2014.12.001] [Citation(s) in RCA: 370] [Impact Index Per Article: 41.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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116
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Nanocellulose and Proteins: Exploiting Their Interactions for Production, Immobilization, and Synthesis of Biocompatible Materials. ADVANCES IN POLYMER SCIENCE 2015. [DOI: 10.1007/12_2015_322] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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117
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Mueller S, Sapkota J, Nicharat A, Zimmermann T, Tingaut P, Weder C, Foster EJ. Influence of the nanofiber dimensions on the properties of nanocellulose/poly(vinyl alcohol) aerogels. J Appl Polym Sci 2014. [DOI: 10.1002/app.41740] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Silvana Mueller
- Adolphe Merkle Institute, University of Fribourg; Chemin des Verdiers 4 CH-1700 Fribourg Switzerland
| | - Janak Sapkota
- Adolphe Merkle Institute, University of Fribourg; Chemin des Verdiers 4 CH-1700 Fribourg Switzerland
| | - Apiradee Nicharat
- Adolphe Merkle Institute, University of Fribourg; Chemin des Verdiers 4 CH-1700 Fribourg Switzerland
| | - Tanja Zimmermann
- Swiss Federal Laboratories for Materials Science and Technology; Laboratory for Applied Wood Materials; Überlandstrasse 129 Dübendorf CH-8600 Switzerland
| | - Philippe Tingaut
- Swiss Federal Laboratories for Materials Science and Technology; Laboratory for Applied Wood Materials; Überlandstrasse 129 Dübendorf CH-8600 Switzerland
| | - Christoph Weder
- Adolphe Merkle Institute, University of Fribourg; Chemin des Verdiers 4 CH-1700 Fribourg Switzerland
| | - E. Johan Foster
- Adolphe Merkle Institute, University of Fribourg; Chemin des Verdiers 4 CH-1700 Fribourg Switzerland
- Virginia Tech, Department of Materials Science & Engineering; Blacksburg Virginia 24061
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118
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Elaboration of a new antibacterial bio-nano-material for food-packaging by synergistic action of cyclodextrin and microfibrillated cellulose. INNOV FOOD SCI EMERG 2014. [DOI: 10.1016/j.ifset.2014.06.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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119
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Zhu X, Wen Y, Wang L, Li C, Cheng D, Zhang H, Ni Y. Binding of Sodium Cholate In Vitro by Cationic Microfibrillated Cellulose. Ind Eng Chem Res 2014. [DOI: 10.1021/ie503909g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xuhai Zhu
- Tianjin
Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yangbing Wen
- Tianjin
Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
- Limerick Pulp & Paper Centre & Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
| | - Lijuan Wang
- Tianjin
Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Changmo Li
- Key
Laboratory of Food Nutrition and Safety, Ministry of Education of
China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Dong Cheng
- Tianjin
Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Hongjie Zhang
- Tianjin
Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yonghao Ni
- Tianjin
Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
- Limerick Pulp & Paper Centre & Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
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120
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Controlled release of folic acid through liquid-crystalline folate nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 44:352-61. [PMID: 25280715 DOI: 10.1016/j.msec.2014.08.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 04/07/2014] [Accepted: 08/05/2014] [Indexed: 11/24/2022]
Abstract
The present study explores folate nanoparticles as nano-carriers for controlled drug delivery. Cross-linked nanoparticles of liquid crystalline folates are composed of ordered stacks. This paper shows that the folate nanoparticles can be made with less than 5% loss in folate ions. In addition, this study shows that folate nanoparticles can disintegrate in a controlled fashion resulting in controlled release of the folate ions. Release can be controlled by the size of nanoparticles, the extent of cross-linking and the choice of cross-linking cation. The effect of different factors like agitation, pH, and temperature on folate release was also studied. Studies were also carried out to show the effect of release medium and role of ions in the release medium on disruption of folate assembly.
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121
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122
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123
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Lavoine N, Tabary N, Desloges I, Martel B, Bras J. Controlled release of chlorhexidine digluconate using β-cyclodextrin and microfibrillated cellulose. Colloids Surf B Biointerfaces 2014; 121:196-205. [DOI: 10.1016/j.colsurfb.2014.06.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 04/27/2014] [Accepted: 06/06/2014] [Indexed: 01/26/2023]
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124
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Akhlaghi SP, Tiong D, Berry RM, Tam KC. Comparative release studies of two cationic model drugs from different cellulose nanocrystal derivatives. Eur J Pharm Biopharm 2014; 88:207-15. [PMID: 24833005 DOI: 10.1016/j.ejpb.2014.04.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 04/24/2014] [Accepted: 04/25/2014] [Indexed: 10/25/2022]
Abstract
Native cellulose nanocrystal (CNC), oxidized CNC (CNC-OX) and chitosan oligosaccharide grafted CNC (CNC-CSOS) were evaluated as potential drug delivery carriers for two model drug compounds, procaine hydrochloride (PrHy) and imipramine hydrochloride (IMI). The loading of PrHy and IMI was performed at pH 8 and 7, respectively. IMI displayed higher binding to CNC derivatives than PrHy. Drug selective membranes were prepared for each model drug and a drug selective electrode system was used to measure the drug concentration in the filtrate and release medium. Isothermal Titration Calorimetry (ITC) was used to elucidate the types of interactions between model drugs and CNC and its derivatives. The complexation between model drugs and CNC derivatives was confirmed by zeta potential and transmittance measurements. The binding and release of these drugs correlated with the nature and types of interactions that exist between the CNC and drug molecules.
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Affiliation(s)
| | - Daryl Tiong
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | | | - Kam Chiu Tam
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada.
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125
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Abeer MM, Mohd Amin MCI, Martin C. A review of bacterial cellulose-based drug delivery systems: their biochemistry, current approaches and future prospects. J Pharm Pharmacol 2014; 66:1047-61. [DOI: 10.1111/jphp.12234] [Citation(s) in RCA: 234] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 01/18/2014] [Indexed: 12/26/2022]
Abstract
Abstract
Objectives
The field of pharmaceutical technology is expanding rapidly because of the increasing number of drug delivery options. Successful drug delivery is influenced by multiple factors, one of which is the appropriate identification of materials for research and engineering of new drug delivery systems. Bacterial cellulose (BC) is one such biopolymer that fulfils the criteria for consideration as a drug delivery material.
Key findings
BC showed versatility in terms of its potential for in-situ modulation, chemical modification after synthesis and application in the biomedical field, thus expanding the current, more limited view of BC and facilitating the investigation of its potential for application in drug delivery.
Summary
Cellulose, which is widely available in nature, has numerous applications. One of the applications is that of BC in the pharmaceutical and biomedical fields, where it has been primarily applied for transdermal formulations to improve clinical outcomes. This review takes a multidisciplinary approach to consideration of the feasibility and potential benefits of BC in the development of other drug delivery systems for various routes of administration.
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Affiliation(s)
- Muhammad Mustafa Abeer
- Centre for Drug Delivery Research, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Mohd Cairul Iqbal Mohd Amin
- Centre for Drug Delivery Research, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Claire Martin
- Department of Pharmacy, University of Wolverhampton, Wolverhampton, UK
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Rouabhia M, Asselin J, Tazi N, Messaddeq Y, Levinson D, Zhang Z. Production of biocompatible and antimicrobial bacterial cellulose polymers functionalized by RGDC grafting groups and gentamicin. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1439-46. [PMID: 24422537 DOI: 10.1021/am4027983] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Bacterial cellulose (BC), a three-dimensional fibril, is a natural polymer that can be used for many applications. BC effectiveness may be improved by enhancing surface characteristics contributing to a better physiologic interaction with human and animal cells and to intrinsically present antimicrobial agents. In the present study, gentamicin-activated BC membranes were obtained by chemically grafting RGDC peptides (R: arginine; G: glycine; D: aspartic acid; C: cysteine) using coupling agent 3-aminopropyltriethoxysilane (APTES) followed by covalent attachment of gentamicin onto the surface of the BC membrane network. X-ray photoelectron spectroscopy (XPS) analyses showed that the BC-APTES contained 0.7% of silicon in terms of elemental composition, corresponding to a grafting ratio of 1:12. The presence of silicon and nitrogen in the BC-APTES confirmed the surface functionalization of the BC membrane. Fourier-transform infrared (FTIR) analyses show the formation of the secondary amide as supported by the valence bond C═O (ν(C═O)), a characteristic vibrational transition at 1650 cm(-1) which is particularly intense with the BC-RGDC-gentamicin membrane. Energy-dispersive X-ray (EDX) analyses showed a low level of carbon and nitrogen (C + N) in pure BC but a high level of (C + N) in BC-RGDC-gentamicin confirming the surface modification of the BC membrane by RGDC and gentamicin enrichment. Of great interest, the gentamicin-RGDC-grafted BC membranes are bactericidal against Streptococcus mutans but nontoxic to human dermal fibroblasts and thus may be useful for multiple applications such as improved wound healing and drug delivery systems.
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Affiliation(s)
- Mahmoud Rouabhia
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval , 2420 Rue de la Terrasse, Québec, QC G1V 0A6, Canada
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Carlsson DO, Hua K, Forsgren J, Mihranyan A. Aspirin degradation in surface-charged TEMPO-oxidized mesoporous crystalline nanocellulose. Int J Pharm 2013; 461:74-81. [PMID: 24291076 DOI: 10.1016/j.ijpharm.2013.11.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 11/11/2013] [Accepted: 11/18/2013] [Indexed: 11/28/2022]
Abstract
TEMPO-mediated surface oxidation of mesoporous highly crystalline Cladophora cellulose was used to introduce negative surface charges onto cellulose nanofibrils without significantly altering other structural characteristics. This enabled the investigation of the influence of mesoporous nanocellulose surface charges on aspirin chemical stability to be conducted. The negative surface charges (carboxylate content 0.44±0.01 mmol/g) introduced on the mesoporous crystalline nanocellulose significantly accelerated aspirin degradation, compared to the starting material which had significantly less surface charge (0.06±0.01 mmol/g). This effect followed from an increased aspirin amorphisation ability in mesopores of the oxidized nanocellulose. These results highlight the importance of surface charges in formulating nanocellulose for drug delivery.
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Affiliation(s)
- Daniel O Carlsson
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Ångström Laboratory, Uppsala University, PO Box 534, SE-75121 Uppsala, Sweden
| | - Kai Hua
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Ångström Laboratory, Uppsala University, PO Box 534, SE-75121 Uppsala, Sweden
| | - Johan Forsgren
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Ångström Laboratory, Uppsala University, PO Box 534, SE-75121 Uppsala, Sweden.
| | - Albert Mihranyan
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Ångström Laboratory, Uppsala University, PO Box 534, SE-75121 Uppsala, Sweden.
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