351
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Boni FI, Prezotti FG, Cury BSF. Gellan gum microspheres crosslinked with trivalent ion: effect of polymer and crosslinker concentrations on drug release and mucoadhesive properties. Drug Dev Ind Pharm 2016; 42:1283-90. [DOI: 10.3109/03639045.2015.1125915] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Fernanda Isadora Boni
- Graduate Program in Pharmaceutical Sciences, Department of Drugs and Pharmaceuticals, School of Pharmaceutical Sciences, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Fabíola Garavello Prezotti
- Graduate Program in Pharmaceutical Sciences, Department of Drugs and Pharmaceuticals, School of Pharmaceutical Sciences, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Beatriz Stringhetti Ferreira Cury
- Graduate Program in Pharmaceutical Sciences, Department of Drugs and Pharmaceuticals, School of Pharmaceutical Sciences, São Paulo State University – UNESP, Araraquara, SP, Brazil
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352
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Bacelar AH, Silva-Correia J, Oliveira JM, Reis RL. Recent progress in gellan gum hydrogels provided by functionalization strategies. J Mater Chem B 2016; 4:6164-6174. [DOI: 10.1039/c6tb01488g] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Gellan gum and its functionalized derivatives present a wide range of applications that open up new possibilities in tissue engineering and regenerative medicine.
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Affiliation(s)
- Ana H. Bacelar
- 3B's Research Group – Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco GMR
| | - Joana Silva-Correia
- 3B's Research Group – Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco GMR
| | - Joaquim M. Oliveira
- 3B's Research Group – Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco GMR
| | - Rui L. Reis
- 3B's Research Group – Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco GMR
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353
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P. N, Bhattacharya S. Rheological characterisation of sol–gel phenomenon and stability of green gram and foxtail millet flour gels. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2015.08.066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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354
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Maalej H, Hmidet N, Boisset C, Bayma E, Heyraud A, Nasri M. Rheological and emulsifying properties of a gel-like exopolysaccharide produced by Pseudomonas stutzeri AS22. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.07.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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355
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Yan Y, Takemasa M, Zhao C, Yu L, Nishinari K. Structure-gelation research on gallate analogs and xyloglucan by rheology, thermal analysis and NMR. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.07.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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356
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Schiavi A, Cuccaro R, Troia A. Strain-rate and temperature dependent material properties of Agar and Gellan Gum used in biomedical applications. J Mech Behav Biomed Mater 2016; 53:119-130. [DOI: 10.1016/j.jmbbm.2015.08.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 07/28/2015] [Accepted: 08/04/2015] [Indexed: 10/23/2022]
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357
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Kudaivergenov S, Gusenov I, Zhappasbayev B, Shakhvorostov A. Application of polymer flooding technology for enhanced oil recovery. CHEMICAL BULLETIN OF KAZAKH NATIONAL UNIVERSITY 2015. [DOI: 10.15328/cb644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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358
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Nussinovitch A, Dagan O. Hydrocolloid liquid-core capsules for the removal of heavy-metal cations from water. JOURNAL OF HAZARDOUS MATERIALS 2015; 299:122-131. [PMID: 26094245 DOI: 10.1016/j.jhazmat.2015.06.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 05/28/2015] [Accepted: 06/05/2015] [Indexed: 06/04/2023]
Abstract
Liquid-core capsules with a non-crosslinked alginate fluidic core surrounded by a gellan membrane were produced in a single step to investigate their ability to adsorb heavy metal cations. The liquid-core gellan-alginate capsules, produced by dropping alginate solution with magnesium cations into gellan solution, were extremely efficient at adsorbing lead cations (267 mg Pb(2+)/g dry alginate) at 25 °C and pH 5.5. However, these capsules were very weak and brittle, and an external strengthening capsule was added by using magnesium cations. The membrane was then thinned with the surfactant lecithin, producing capsules with better adsorption attributes (316 mg Pb(+2)/g dry alginate vs. 267 mg Pb(+2)/g dry alginate without lecithin), most likely due to the thinner membrane and enhanced mass transfer. The capsules' ability to adsorb other heavy-metal cations - copper (Cu(2+)), cadmium (Cd(2+)) and nickel (Ni(2+)) - was tested. Adsorption efficiencies were 219, 197 and 65 mg/g, respectively, and were correlated with the cation's affinity to alginate. Capsules with the sorbed heavy metals were regenerated by placing in a 1M nitric acid suspension for 24h. Capsules could undergo three regeneration cycles before becoming damaged.
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Affiliation(s)
- A Nussinovitch
- The Hebrew University of Jerusalem, The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science and Nutrition, P.O. Box 12, Rehovot 76100, Israel.
| | - O Dagan
- The Hebrew University of Jerusalem, The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science and Nutrition, P.O. Box 12, Rehovot 76100, Israel
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359
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Keller A, Stevens L, Wallace GG, in het Panhuis M. 3D Printed Edible Hydrogel Electrodes. ACTA ACUST UNITED AC 2015. [DOI: 10.1557/adv.2015.10] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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360
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Vilgis TA. Soft matter food physics--the physics of food and cooking. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2015; 78:124602. [PMID: 26534781 DOI: 10.1088/0034-4885/78/12/124602] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This review discusses the (soft matter) physics of food. Although food is generally not considered as a typical model system for fundamental (soft matter) physics, a number of basic principles can be found in the interplay between the basic components of foods, water, oil/fat, proteins and carbohydrates. The review starts with the introduction and behavior of food-relevant molecules and discusses food-relevant properties and applications from their fundamental (multiscale) behavior. Typical food aspects from 'hard matter systems', such as chocolates or crystalline fats, to 'soft matter' in emulsions, dough, pasta and meat are covered and can be explained on a molecular basis. An important conclusion is the point that the macroscopic properties and the perception are defined by the molecular interplay on all length and time scales.
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Affiliation(s)
- Thomas A Vilgis
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55129 Mainz, Germany
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361
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Sharifpour E, Riazi M, Ayatollahi S. Smart Technique in Water Shutoff Treatment for a Layered Reservoir through an Engineered Injection/Production Scheme. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b02191] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elham Sharifpour
- EOR Research Center, School
of Chemical and Petroleum Engineering, Shiraz University, Shiraz, I.R., 71348-51154, Iran
| | - Masoud Riazi
- EOR Research Center, School
of Chemical and Petroleum Engineering, Shiraz University, Shiraz, I.R., 71348-51154, Iran
| | - Shahab Ayatollahi
- EOR Research Center, School
of Chemical and Petroleum Engineering, Shiraz University, Shiraz, I.R., 71348-51154, Iran
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362
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Costa AM, Mano JF. Extremely strong and tough hydrogels as prospective candidates for tissue repair – A review. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.07.053] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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363
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Tiwari (Sharma) S, Chakkaravarthi A, Bhattacharya S. Imaging and image analysis of freeze-dried cellular solids of gellan and agar gels. J FOOD ENG 2015. [DOI: 10.1016/j.jfoodeng.2015.04.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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364
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Einhorn-Stoll U, Kastner H, Hecht T, Zimathies A, Drusch S. Modification and physico-chemical properties of citrus pectin – Influence of enzymatic and acidic demethoxylation. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2015.05.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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365
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Nurakhmetova Z, Gussenov I, Tatykhanova G, Kudaibergenov S. Behavior of gellan in aqueous-salt solutions and oilfield saline water. CHEMICAL BULLETIN OF KAZAKH NATIONAL UNIVERSITY 2015. [DOI: 10.15328/cb640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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366
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Murillo-Martínez MM, Tecante A. Thermal stability and transition temperatures of monovalent salts of high-acyl gellan gels. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- María M. Murillo-Martínez
- Departamento de Alimentos y Biotecnología; Facultad de Química; Universidad Nacional Autónoma de México; Cd. Universitaria, D.F. México 04510 México
| | - Alberto Tecante
- Departamento de Alimentos y Biotecnología; Facultad de Química; Universidad Nacional Autónoma de México; Cd. Universitaria, D.F. México 04510 México
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367
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Shanthilal J, Bhattacharya S. Rheology of Rice Flour Dough with Gum Arabic: Small and Large-Deformation Studies, Sensory Assessment and Modeling. J Food Sci 2015; 80:E1735-45. [DOI: 10.1111/1750-3841.12941] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 05/15/2015] [Indexed: 11/29/2022]
Affiliation(s)
- J. Shanthilal
- Authors are with Food Engineering Dept; CSIR-Central Food Technological Research Inst; Mysore 570020 India
| | - Suvendu Bhattacharya
- Authors are with Food Engineering Dept; CSIR-Central Food Technological Research Inst; Mysore 570020 India
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368
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García MC, Alfaro MC, Muñoz J. Rheology of sheared gels based on low acyl-gellan gum. FOOD SCI TECHNOL INT 2015; 22:325-32. [PMID: 26251462 DOI: 10.1177/1082013215599296] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 07/14/2015] [Indexed: 11/17/2022]
Abstract
Sheared gels containing 0.2 wt% low-acyl gellan gum were prepared by different processing protocols using Na(+) or Ca(2+) as gel-promoting ions. Rheology and confocal laser scanning microscopy were used to gain information on the sample structure. Confocal laser scanning microscopy revealed the formation of a heterogeneous microstructure consisting of a dispersion of gel-like clusters. Small amplitude oscillatory shear stress results indicated that their viscoelastic properties had a predominant elastic component. Flow curves exhibited very high viscosities at low shear stress, an apparent yield stress and very shear thinning behaviour, supporting their applications as a stabilizer.
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Affiliation(s)
- M Carmen García
- Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, Sevilla, Spain
| | - M Carmen Alfaro
- Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, Sevilla, Spain
| | - José Muñoz
- Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, Sevilla, Spain
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369
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370
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Das N, Tripathi N, Basu S, Bose C, Maitra S, Khurana S. Progress in the development of gelling agents for improved culturability of microorganisms. Front Microbiol 2015; 6:698. [PMID: 26257708 PMCID: PMC4511835 DOI: 10.3389/fmicb.2015.00698] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 06/26/2015] [Indexed: 11/21/2022] Open
Abstract
Gelling agents are required for formulating both solid and semisolid media, vital for the isolation of microorganisms. Gelatin was the first gelling agent to be discovered but it soon paved the way for agar, which has far superior material qualities. Source depletion, issues with polymerase-chain-reaction and inability to sustain extermophiles etc., necessitate the need of other gelling agents. Many new gelling agents, such as xantham gum, gellan gum, carrageenan, isubgol, and guar gum have been formulated, raising the hopes for the growth of previously unculturable microorganisms. We evaluate the progress in the development of gelling agents, with the hope that our synthesis would help accelerate research in the field.
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Affiliation(s)
- Nabajit Das
- Department of Biological Sciences, Indian Institute of Science Education and Research KolkataKolkata, India
| | - Naveen Tripathi
- Department of Biological Sciences, Indian Institute of Science Education and Research KolkataKolkata, India
| | - Srijoni Basu
- Department of Biological Sciences, Indian Institute of Science Education and Research KolkataKolkata, India
| | - Chandra Bose
- Department of Biological Sciences, Indian Institute of Science Education and Research KolkataKolkata, India
| | - Susmit Maitra
- School of Biotechnology, Kalinga Institute of Industrial Technology UniversityBhubaneswar, India
| | - Sukant Khurana
- Department of Biological Sciences, Indian Institute of Science Education and Research KolkataKolkata, India
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371
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Douglas TEL, Pilarz M, Lopez-Heredia M, Brackman G, Schaubroeck D, Balcaen L, Bliznuk V, Dubruel P, Knabe-Ducheyne C, Vanhaecke F, Coenye T, Pamula E. Composites of gellan gum hydrogel enzymatically mineralized with calcium-zinc phosphate for bone regeneration with antibacterial activity. J Tissue Eng Regen Med 2015; 11:1610-1618. [PMID: 26174042 DOI: 10.1002/term.2062] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 04/22/2015] [Accepted: 05/04/2015] [Indexed: 11/05/2022]
Abstract
Gellan gum hydrogels functionalized with alkaline phosphatase were enzymatically mineralized with phosphates in mineralization medium containing calcium (Ca) and zinc (Zn) to improve their suitability as biomaterials for bone regeneration. The aims of the study were to endow mineralized hydrogels with antibacterial activity by incorporation of Zn in the inorganic phase, and to investigate the effect of Zn incorporation on the amount and type of mineral formed, the compressive modulus of the mineralized hydrogels and on their ability to support adhesion and growth of MC3T3-E1 osteoblast-like cells. Mineralization medium contained glycerophosphate (0.05 m) and three different molar Ca:Zn ratios, 0.05:0, 0.04:0.01 and 0.025:0.025 (all mol/dm3 ), hereafter referred to as A, B and C, respectively. FTIR, SAED and TEM analysis revealed that incubation for 14 days caused the formation of predominantly amorphous mineral phases in sample groups A, B and C. The presence of Zn in sample groups B and C was associated with a drop in the amount of mineral formed and a smaller mineral deposit morphology, as observed by SEM. ICP-OES revealed that Zn was preferentially incorporated into mineral compared to Ca. Mechanical testing revealed a decrease in compressive modulus in sample group C. Sample groups B and C, but not A, showed antibacterial activity against biofilm-forming, methicillin-resistant Staphylococcus aureus. All sample groups supported cell growth. Zn incorporation increased the viable cell number. The highest values were seen on sample group C. In conclusion, the sample group containing the most Zn, i.e. group C, appears to be the most promising. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Timothy E L Douglas
- Polymer Chemistry and Biomaterials (PBM) Group, Department of Organic Chemistry, Ghent University, Belgium
| | - Magdalena Pilarz
- Department of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Krakow, Poland
| | - Marco Lopez-Heredia
- Department of Experimental and Orofacial Medicine, Faculty of Dentistry, Philipps University, Marburg, Germany
| | - Gilles Brackman
- Laboratory of Pharmaceutical Microbiology, Ghent University, Belgium
| | - David Schaubroeck
- Centre for Microsystems Technology (CMST), IMEC, and Ghent University, Belgium
| | - Lieve Balcaen
- Department of Analytical Chemistry, Ghent University, Belgium
| | - Vitaliy Bliznuk
- Department of Materials Science and Engineering, Zwijnaarde, Belgium
| | - Peter Dubruel
- Polymer Chemistry and Biomaterials (PBM) Group, Department of Organic Chemistry, Ghent University, Belgium
| | - Christine Knabe-Ducheyne
- Department of Experimental and Orofacial Medicine, Faculty of Dentistry, Philipps University, Marburg, Germany
| | - Frank Vanhaecke
- Department of Analytical Chemistry, Ghent University, Belgium
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Ghent University, Belgium
| | - Elzbieta Pamula
- Department of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Krakow, Poland
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372
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Keller A, Benz D, in het Panhuis M. Strain and Pressure Gauges from Tough, Conducting and Edible Hydrogels. ACTA ACUST UNITED AC 2015. [DOI: 10.1557/opl.2015.572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTThe development of highly conductive, robust edible hydrogels was investigated using a combination of the biopolymers gellan gum and gelatin, a common salt (NaCl) and plant-derived cross-linker (genipin). Robust strain gauge/pressure sensors were developed using edible materials to demonstrate the potential of these hydrogels. The hydrogels exhibited gauge factor and pressure sensitivity values of 7.6 ± 0.1 and 400 ± 7 μΩ/Pa for loads up to 3 kPa, respectively. Furthermore, these devices were able to operate under larger loads with gauge factor and pressure sensitivity values of 0.308 ± 0.002 and 7.17 ± 0.05 μΩ/Pa, respectively, for loads between 9 kPa and 280 kPa.
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373
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Danalache F, Beirão-da-Costa S, Mata P, Alves VD, Moldão-Martins M. Texture, microstructure and consumer preference of mango bars jellified with gellan gum. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2014.12.040] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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374
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Danalache F, Mata P, Moldão-Martins M, Alves VD. Novel mango bars using gellan gum as gelling agent: Rheological and microstructural studies. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2014.09.037] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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375
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Einhorn-Stoll U, Drusch S. Methods for investigation of diffusion processes and biopolymer physics in food gels. Curr Opin Food Sci 2015. [DOI: 10.1016/j.cofs.2015.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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376
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Abioye AO, Issah S, Kola-Mustapha AT. Ex vivo skin permeation and retention studies on chitosan-ibuprofen-gellan ternary nanogel prepared by in situ ionic gelation technique--a tool for controlled transdermal delivery of ibuprofen. Int J Pharm 2015; 490:112-30. [PMID: 25997660 DOI: 10.1016/j.ijpharm.2015.05.030] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/06/2015] [Accepted: 05/11/2015] [Indexed: 01/06/2023]
Abstract
The chemical potentials of drug-polymer electrostatic interaction have been utilized to develop a novel ternary chitosan-ibuprofen-gellan nanogel as controlled transdermal delivery tool for ibuprofen. The ternary nanogels were prepared by a combination of electrostatic nanoassembly and ionic gelation techniques. The electrostatic and hydrophobic interactions as well as hydrogen bonding between ibuprofen and chitosan were confirmed with FTIR, while DSC, TGA and SEM confirmed the physical state, thermal and morphological characteristics, respectively. The ex vivo delivery of ibuprofen onto and across the skin was evaluated based on system specific drug release parameters such as steady state permeation rate, permeability coefficient, permeability enhancement ratio, skin/gel partition coefficient, diffusion coefficient, lag time and release rate constant and mechanisms of release were determined using mathematical models. Interaction between ibuprofen and chitosan produced new spherical eutectic nanoconjugates with remarkable decrease in particle size of ibuprofen from 4580 (length-to-breadth aspect ratio) to a minimum of 14.15 nm (324-times), and thermally stable amorphous characteristics. The nanogels exhibited significant elastic and pseudoplastic characteristics dictated by the concentration of chitosan with maximum swelling capacity of 775% w/w at 6.55 mM chitosan compared with 281.16 and 506.50% for plain gellan and control ibuprofen hydrogel, respectively. Chitosan enhanced the skin penetration, permeability and the rate of transdermal release of ibuprofen by a factor of 4, dictated by the extent of ibuprofen-chitosan ionic interaction and its concentration. The major mechanism of ibuprofen release through the pig skin was drug diffusion however drug partition and matrix erosion also occurred. It was evident that ternary nanogels are novel formulations with potential application in controlled transdermal delivery of ibuprofen.
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Affiliation(s)
- Amos Olusegun Abioye
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester LE1 9BH, UK.
| | - Sureya Issah
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester LE1 9BH, UK
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377
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Ahmad NH, Ahmed J, Hashim DM, Manap YA, Mustafa S. Oscillatory and steady shear rheology of gellan/dextran blends. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2015; 52:2902-9. [PMID: 25892789 PMCID: PMC4397348 DOI: 10.1007/s13197-014-1330-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/06/2014] [Accepted: 03/14/2014] [Indexed: 10/25/2022]
Abstract
Oscillatory and steady shear rheology of gellan (G) and dextran (D) solution individually, and in blends (G/D ratio 1:1, 1:2, and 1:3 w/v) with a total hydrocolloid concentration of 3 % (w/v) were studied at 25 °C. Individually, 1.5 % dextran and 1.5 % gellan in solution exhibited Newtonian and non-Newtonian behavior, respectively. A blend of equal proportion of dextran and gellan (G/D = 1:1) exhibits a distinct gel point (G' = G″), and further addition of dextran in the blend (G/D = 1:2 and 1:3) resulted predominating liquid-like (G″ > G') behavior. A plot of G' vs G″ distinctly showed the gradual transition of the blend. Shear stress (τ)-shear rate ([Formula: see text]) data fitted well the Herschel-Bulkley model. The G/D blend exhibited shear thinning behavior with flow behavior index less than unity. The Cox-Merz rule did not fit well for the complex shear viscosity (η*) and apparent viscosity (η) of the blend.
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Affiliation(s)
- Nurul Hawa Ahmad
- />Halal Products Research Institute, Universiti Putra Malaysia, Putra Infoport, 43400 Serdang, Selangor Darul Ehsan Malaysia
| | - Jasim Ahmed
- />Food & Nutrition Program, Kuwait Institute for Scientific Research, P.O Box 24885, 13109 Safat, Kuwait
| | - Dzulkifly M. Hashim
- />Halal Products Research Institute, Universiti Putra Malaysia, Putra Infoport, 43400 Serdang, Selangor Darul Ehsan Malaysia
- />Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor Darul Ehsan Malaysia
| | - Yazid Abdul Manap
- />Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor Darul Ehsan Malaysia
| | - Shuhaimi Mustafa
- />Halal Products Research Institute, Universiti Putra Malaysia, Putra Infoport, 43400 Serdang, Selangor Darul Ehsan Malaysia
- />Bioprocessing and Biomanufacturing Research Centre, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia, 43400 Serdang, Selangor Darul Ehsan Malaysia
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378
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Mahdi MH, Conway BR, Smith AM. Development of mucoadhesive sprayable gellan gum fluid gels. Int J Pharm 2015; 488:12-9. [PMID: 25863119 DOI: 10.1016/j.ijpharm.2015.04.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 04/03/2015] [Accepted: 04/06/2015] [Indexed: 11/16/2022]
Abstract
The nasal mucosa provides a potentially good route for local and systemic drug delivery. However, the protective feature of the nasal cavity make intranasal delivery challenging. The application of mucoadhesive polymers in nasal drug delivery systems enhances the retention of the dosage form in the nasal cavity. Several groups have investigated using low acyl gellan as a drug delivery vehicle but only limited research however, has been performed on high acyl gellan for this purpose, despite its properties being more conducive to mucoadhesion. High acyl gellan produces highly elastic gels below 60°C which make it difficult to spray using a mechanical spray device. Therefore, in this study we have tried to address this problem by making fluid gels by introducing a shear force during gelation of the gellan polymer. These fluid gel systems contain gelled micro-particles suspended in a solution of un-gelled polymer. These systems can therefore behave as pourable viscoelastic fluids. In this study we have investigated the rheological behavior and mucoadhesion of fluid gels of two different types of gellan (high and low acyl) and fluid gels prepared from blends of high and low acyl gellan at a 50:50 ratio. The results demonstrated that by preparing fluid gels of high acyl gellan, the rheological properties were sufficient to spray through a standard nasal spray device. Moreover fluid gels also significantly enhance both high acyl and low acyl gellan mucoadhesion properties.
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Affiliation(s)
- Mohammed H Mahdi
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
| | - Barbara R Conway
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
| | - Alan M Smith
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
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379
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Varankovich NV, Khan NH, Nickerson MT, Kalmokoff M, Korber DR. Evaluation of pea protein–polysaccharide matrices for encapsulation of acid-sensitive bacteria. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.01.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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380
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Zhang W, Luan D, Tang J, Sablani SS, Rasco B, Lin H, Liu F. Dielectric properties and other physical properties of low-acyl gellan gel as relevant to microwave assisted pasteurization process. J FOOD ENG 2015. [DOI: 10.1016/j.jfoodeng.2014.10.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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381
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Lorenzo G, Zaritzky N, Califano A. Mechanical and optical characterization of gelled matrices during storage. Carbohydr Polym 2015; 117:825-835. [DOI: 10.1016/j.carbpol.2014.10.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 10/09/2014] [Accepted: 10/13/2014] [Indexed: 11/16/2022]
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382
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Tan TC, Foo WT, Liong MT, Easa AM. Comparative assessment of dynamic oscillatory measurements on network development and mechanical spectra of gelatine or gellan in maize starch–egg white composite gels. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.11.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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383
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Bilanovic D, Starosvetsky J, Armon RH. Cross-linking xanthan and other compounds with glycerol. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.09.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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384
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Kang D, Zhang HB, Nitta Y, Fang YP, Nishinari K. Gellan. POLYSACCHARIDES 2015. [DOI: 10.1007/978-3-319-03751-6_20-2] [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] Open
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385
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Rheological Properties of Polysaccharides from Longan (Dimocarpus longanLour.) Fruit. INT J POLYM SCI 2015. [DOI: 10.1155/2015/168064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Longan polysaccharide (LP) was extracted from longan (Dimocarpus longanLour.) pulp. The composition and rheological properties were determined by chemical analysis and dynamic shear rheometer. The flow behavior and viscoelastic behavior of longan polysaccharide (LP) solution were investigated by steady shear and small amplitude oscillatory shear (SAOS) experiments, respectively. The result shows that the solution is a pseudoplastic flow in a range of shear rate (1–100 s−1). The rheological behavior of LP was influenced by cations such as Na+and Ca2+. With an increase of apparent viscosity,G′andG′′were accompanied by addition of Na+and Ca2+.
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386
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Gately RD, Warren H, Scardamaglia M, Romeo T, Bittencourt C, in het Panhuis M. Sonication-induced effects on carbon nanofibres in composite materials. RSC Adv 2015. [DOI: 10.1039/c4ra15033c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The preparation, characterization and filling of carbon nanofibre–gellan gum composite materials is presented.
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Affiliation(s)
- Reece D. Gately
- Soft Materials Group
- School of Chemistry
- University of Wollongong
- Wollongong
- Australia
| | - Holly Warren
- Soft Materials Group
- School of Chemistry
- University of Wollongong
- Wollongong
- Australia
| | - Mattia Scardamaglia
- Chimie des Interactions Plasma Surface
- CIRMAP
- University of Mons
- 7000 Mons
- Belgium
| | - Tony Romeo
- Electron Microscope Centre
- AIIM Facility
- University of Wollongong
- Wollongong
- Australia
| | - Carla Bittencourt
- Chimie des Interactions Plasma Surface
- CIRMAP
- University of Mons
- 7000 Mons
- Belgium
| | - Marc in het Panhuis
- Soft Materials Group
- School of Chemistry
- University of Wollongong
- Wollongong
- Australia
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387
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388
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Liu X, Wang C, Liu L, Zhou S, Luo Y. Rheological properties of the polysaccharide–protein complex from longan (Dimocarpus longan Lour.) pulp. RSC Adv 2015. [DOI: 10.1039/c5ra10926d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Crude longan polysaccharide (CLP) was extracted from longan (Dimocarpus longan Lour.) pulp.
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Affiliation(s)
- Xingxun Liu
- Institute of Agro-Products Processing Science and Technology (IAPPST)
- Chinese Academy of Agricultural Science
- Beijing
- PR China
| | - Changsheng Wang
- Department of Chemical Engineering
- CREPEC
- Polytechnique Montréal
- Montréal
- Canada
| | - Liya Liu
- Institute of Agro-Products Processing Science and Technology (IAPPST)
- Chinese Academy of Agricultural Science
- Beijing
- PR China
| | - Sumei Zhou
- Institute of Agro-Products Processing Science and Technology (IAPPST)
- Chinese Academy of Agricultural Science
- Beijing
- PR China
| | - Yongyue Luo
- Chinese Agricultural Ministry Key Laboratory of Tropical Crop Product Processing
- Agricultural Product Processing Research Institute
- Chinese Academy of Tropical Agricultural Sciences
- Zhanjiang 524001
- PR China
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389
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Low acyl gellan gum fluid gel formation and their subsequent response with acid to impact on satiety. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.07.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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390
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Kirchmajer DM, Gorkin III R, in het Panhuis M. An overview of the suitability of hydrogel-forming polymers for extrusion-based 3D-printing. J Mater Chem B 2015; 3:4105-4117. [DOI: 10.1039/c5tb00393h] [Citation(s) in RCA: 211] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this review hydrogel-forming polymers that are suitable for extrusion-based 3D printing are evaluated.
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Affiliation(s)
- D. M. Kirchmajer
- Soft Materials Group
- School of Chemistry
- University of Wollongong
- Wollongong
- Australia
| | - R. Gorkin III
- Intelligent Polymer Research Institute
- ARC Centre of Excellence for Electromaterials Science
- AIIM Facility
- University of Wollongong
- Australia
| | - M. in het Panhuis
- Soft Materials Group
- School of Chemistry
- University of Wollongong
- Wollongong
- Australia
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391
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Poly (vinyl alcohol) modification of low acyl gellan hydrogels for applications in tissue regeneration. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2014.05.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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392
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de Souza CF, Riegel-Vidotti IC, Cardoso MB, Ono L, Lucyszyn N, Lubambo AF, Sens CV, Grein-Iankovski A, Sierakowski MR. Nanometric organisation in blends of gellan/xyloglucan hydrogels. Carbohydr Polym 2014; 114:48-56. [DOI: 10.1016/j.carbpol.2014.07.070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 07/22/2014] [Accepted: 07/23/2014] [Indexed: 02/09/2023]
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393
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Shimizu S, Matubayasi N. Gelation: The Role of Sugars and Polyols on Gelatin and Agarose. J Phys Chem B 2014; 118:13210-6. [DOI: 10.1021/jp509099h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Seishi Shimizu
- York
Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York YO10 5YW, United Kingdom
| | - Nobuyuki Matubayasi
- Division
of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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394
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The effect of thermal history on the elasticity of K-type gellan gels. Carbohydr Polym 2014; 113:189-93. [DOI: 10.1016/j.carbpol.2014.06.084] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 06/08/2014] [Accepted: 06/23/2014] [Indexed: 11/20/2022]
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395
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Mahdi MH, Conway BR, Smith AM. Evaluation of gellan gum fluid gels as modified release oral liquids. Int J Pharm 2014; 475:335-43. [DOI: 10.1016/j.ijpharm.2014.08.044] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 08/19/2014] [Accepted: 08/21/2014] [Indexed: 12/01/2022]
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396
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Mucoadhesive beads of gellan gum/pectin intended to controlled delivery of drugs. Carbohydr Polym 2014; 113:286-95. [DOI: 10.1016/j.carbpol.2014.07.021] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 06/06/2014] [Accepted: 07/01/2014] [Indexed: 01/19/2023]
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397
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Mazzuca C, Micheli L, Cervelli E, Basoli F, Cencetti C, Coviello T, Iannuccelli S, Sotgiu S, Palleschi A. Cleaning of paper artworks: development of an efficient gel-based material able to remove starch paste. ACS APPLIED MATERIALS & INTERFACES 2014; 6:16519-16528. [PMID: 25216156 DOI: 10.1021/am504295n] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The removal of old glue from paper artworks is of paramount importance for the preservation of its integrity during the restoration process. Wet cleaning is one of the traditional methods, although it may cause damages on artworks. In this work, an advantageous alternative method, based on the use of a rigid hydrogel, for a simple and localized removal of starch paste from paper supports is presented. The use of an appropriate hydrogel allows to overcome many of the problems faced by restorers minimizing damages, through a controlled release of water to the artwork, and a simple and not invasive application and removal. At the same time, the specific and targeted enzyme activity leads to a significant reduction in the application time of the cleaning procedure. In this context, experiments were carried out applying Gellan hydrogel carrying α-amylase enzyme on several paper samples soiled with starch paste. To assess the cleaning efficacy of the proposed hydrogel, we have used a multidisciplinary approach, by means of spectroscopic techniques, scanning electron microscopy, chromatographic analysis, and pH investigations.
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Affiliation(s)
- Claudia Mazzuca
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata , Via della Ricerca Scientifica, 00173 Rome, Italy
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398
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Preparation, characterization and in vitro digestibility of gellan and chitosan-gellan microgels. Carbohydr Polym 2014; 117:54-62. [PMID: 25498608 DOI: 10.1016/j.carbpol.2014.09.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 08/18/2014] [Accepted: 09/11/2014] [Indexed: 01/15/2023]
Abstract
Gellan microgels with potential application in delivery systems were obtained by physically cross-linked gellan gum. The microgels were produced by atomization followed by ionotropic gelation using CaCl2 (gellan/Ca) or KCl (gellan/K) as hardening agent and part of them were coated with chitosan in order to improve their resistance to gastric digestion. Size distribution, morphology and zeta potential of microgels were evaluated before and after in vitro digestion process. The long term stability was also evaluated. Spherical microparticles were obtained at gellan concentration above 0.6% w/w, showing average size among 70-120 μm. Most of the coated and uncoated microgels showed stability in aqueous media, except the uncoated gellan/K microgel. The in vitro digestion evaluation showed that all particles maintained their size and shape after the gastric digestion step. However, the enteric digestion caused disintegration of microgels indicating their potential application for enteric delivery systems. The chitosan-coated microgels showed lower degree of fragmentation when compared to the uncoated microgels, indicating that the coating process enable a better control of microgels releasing properties during the enteric digestion.
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399
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Tan TC, Foo WT, Liong MT, Mat Easa A. Comparative assessment of textural properties and microstructure of composite gels prepared from gelatine or gellan with maize starch and/or egg white. Int J Food Sci Technol 2014. [DOI: 10.1111/ijfs.12664] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Thuan-Chew Tan
- Food Technology Division; School of Industrial Technology; Universiti Sains Malaysia; USM Penang 11800 Malaysia
| | - Wan-Teck Foo
- Food Technology Division; School of Industrial Technology; Universiti Sains Malaysia; USM Penang 11800 Malaysia
| | - Min-Tze Liong
- Bioprocess Technology Division; School of Industrial Technology; Universiti Sains Malaysia; USM Penang 11800 Malaysia
| | - Azhar Mat Easa
- Food Technology Division; School of Industrial Technology; Universiti Sains Malaysia; USM Penang 11800 Malaysia
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400
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New Strategy for the Cleaning of Paper Artworks: A Smart Combination of Gels and Biosensors. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/385674] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this work an outlook on the design and application, in the cultural heritage field, of new tools for diagnostic and cleaning use, based on biocompatible hydrogels and electrochemical sensors, is reported. The use of hydrogels is intriguing because it does not require liquid treatment that could induce damage on artworks, while electrochemical biosensors not only are easy to prepare, but also can be selective for a specific compound and therefore are suitable for monitoring the cleaning process. In the field of restoration of paper artworks, more efforts have to be done in order to know how to perform the best way for an effective restoration. Rigid Gellan gel, made up of Gellan gum and calcium acetate, was proposed as a paper cleaning treatment, and selective biosensors for substances to be removed from this gel have been obtained by choosing the appropriate enzymes to be immobilized. Using this approach, it is possible to know when the cleanup process will be completed, avoiding lengthy and sometimes unnecessary cleaning material applications.
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