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Cernencu AI, Ioniță M. The current state of the art in gellan-based printing inks in tissue engineering. Carbohydr Polym 2023; 309:120676. [PMID: 36906360 DOI: 10.1016/j.carbpol.2023.120676] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023]
Abstract
With the advancement of enhanced fabrication technologies, specifically 3D printing, it is now possible to build artificial tissue for personalized healing. However, inks developed from polymers often fail to meet expectations in terms of mechanical strength, scaffold integrity, and the stimulation of tissue formation. Developing new printable formulations as well as adapting existing printing methods is an essential aspect of contemporary biofabrication research. In order to push the boundaries of the printability window, various strategies have been developed employing gellan gum. This has resulted in major breakthroughs in the development of 3D hydrogels scaffolds that exhibit significant resemblance to genuine tissues and enables the fabrication of more complex systems. In light of the many uses of gellan gum, the purpose of this paper is to provide a synopsis of the printable ink designs drawing attention to the various compositions and fabrication approaches that may be used for tuning the properties of 3D printed hydrogels for tissue engineering applications. The purpose of this article is to outline the development of gellan-based 3D printing inks and to encourage research by highlighting the possible applications of gellan gum.
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Affiliation(s)
- Alexandra I Cernencu
- Advanced Polymer Materials Group, University Politehnica of Bucharest, SplaiulIndependenței, 313, 060042, Bucharest, Romania
| | - Mariana Ioniță
- Advanced Polymer Materials Group, University Politehnica of Bucharest, SplaiulIndependenței, 313, 060042, Bucharest, Romania; Faculty of Medical Engineering, University Politehnica of Bucharest, Bucharest 011061, Romania.
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Muñoz J, Prieto-Vargas P, García MC, Alfaro-Rodríguez MC. Effect of a Change in the CaCl2/Pectin Mass Ratio on the Particle Size, Rheology and Physical Stability of Lemon Essential Oil/W Emulgels. Foods 2023; 12:foods12061137. [PMID: 36981066 PMCID: PMC10048698 DOI: 10.3390/foods12061137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/02/2023] [Accepted: 03/05/2023] [Indexed: 03/12/2023] Open
Abstract
A three-step (rotor-stator-microfluidization-rotor stator) protocol was used to prepare 15% lemon essential oil in water emulgels using a mixture of Tween 80 and Span 20 surfactants as low molecular mass emulsifiers and 0.4% low-methoxyl citrus peel pectin as a gelling agent. Ca2+ was used as a gel-promoting agent. Different CaCl2/pectin mass ratio values from 0.3 to 0.7 were used. Emulgels showed a microstructure consisting of oil droplets embedded in a sheared gel matrix, as demonstrated by bright field optical microscopy. Laser diffraction tests showed multimodal particle size distributions due to the coexistence of oil droplets and gel-like particles. Multiple light scattering tests revealed that the physical stability of emulgels was longer as the CaCl2/pectin mass ratio decreased and that different destabilization mechanisms took place. Thus, incipient syneresis became more important with increasing CaCl2 concentration, but a parallel creaming mechanism was detected for CaCl2/pectin mass ratio values above 0.5. Dynamic viscoelastic and steady shear flow properties of the emulgels with the lowest and highest CaCl2/pectin mass ratio values were compared as a function of aging time. The lowest ratio yielded an emulgel with enhanced connectivity among fluid units as indicated by its wider linear viscoelastic region, higher storage modulus, loss modulus and viscosity values, and more shear thinning properties than those of the emulgel formulated with the highest CaCl2/pectin mass ratio. The evolution of the dynamic viscoelastic properties with aging time was consistent with the information provided by monitoring scans of backscattering as a function of sample height.
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Leong YX, Koh C, PHAN-QUANG GIACHUONG, Tan EX, Wong ZC, Yew WL, Lim BYN, Han X, Ling XY. Air-Stable Plasmonic Bubbles as a Versatile Three-Dimensional Surface-Enhanced Raman Scattering Platform for Bi-Directional Gas Sensing. Chem Commun (Camb) 2022; 58:6697-6700. [DOI: 10.1039/d2cc00597b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Harnessing large hotspot volumes is key for enhanced gas-phase surface-enhanced Raman scattering (SERS) sensing. Herein, we introduce versatile, air-stable 3D ‘Plasmonic bubbles’ with bi-directional sensing capabilities. Our Plasmonic bubbles are...
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Yamamoto R, Kino-Oka M. Design of suspension culture system with bubble sparging for human induced pluripotent stem cells in a plastic fluid. J Biosci Bioeng 2021; 132:190-197. [PMID: 34052116 DOI: 10.1016/j.jbiosc.2021.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 04/19/2021] [Accepted: 04/22/2021] [Indexed: 11/29/2022]
Abstract
Bubble sparging has been used to supply oxygen to large-scale bioreactor systems. However, sparged bubbles cause cell death by rupturing due to shear stress, and the foam layer carries a risk of contamination. Large-scale culture of human induced pluripotent stem cells (hiPSCs) is required for manufacturing, but hiPSCs show high sensitivity to shear stress, and also, aseptic processing is important for their expansion. In this study, a culture system with bubble sparging for hiPSC proliferation was designed using a plastic fluid as a culture medium. The rising bubble velocity in the plastic fluid decreased and was lower than that in a Newtonian fluid when the time interval between bubbles generation, Δt, was greater than 0.14 s. Under this condition, aggregate distribution in the plastic fluid was maintained without liquid flow. Although large aeration induced aggregate coalescence and growth inhibition, the apparent specific growth rate at Δt > 0.14 s increased with an increase in the aeration rate, and the maximum value was similar to that of the conventional suspension culture in a stirred bioreactor system. The gas hold-up in the plastic fluid was higher than that in a Newtonian fluid because of the lower rising bubble velocity, which leads to the suppression of bubble sparging. Therefore, our results indicated that using a plastic fluid leads to a more efficient oxygen supply without agitation in a spatial-temporal phase-transition culture system.
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Affiliation(s)
- Riku Yamamoto
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Masahiro Kino-Oka
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
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Leal AR, Oliveira LDS, Farias LM, Alves CAN, Costa JND, Mata P, Sousa PHMD. Elaboration of mixed structured fruit formulations with agar and gellan gum: Texture, physicochemical, and sensory properties. Int J Gastron Food Sci 2021. [DOI: 10.1016/j.ijgfs.2020.100294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Terreni E, Zucchetti E, Tampucci S, Burgalassi S, Monti D, Chetoni P. Combination of Nanomicellar Technology and In Situ Gelling Polymer as Ocular Drug Delivery System (ODDS) for Cyclosporine-A. Pharmaceutics 2021; 13:pharmaceutics13020192. [PMID: 33535607 PMCID: PMC7912864 DOI: 10.3390/pharmaceutics13020192] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/21/2021] [Accepted: 01/23/2021] [Indexed: 12/22/2022] Open
Abstract
A combination of in situ gelling systems and a loaded drug self-assembling nanomicellar carrier was chosen in this study as a new potential Ocular Drug Delivery System (ODDS) for Cyclosporine-A (CyA), a poorly water-soluble drug. Two non-ionic surfactants (d-α-tocopherol polyethylene glycol succinate, VitE-TPGS and polyoxyl 40 hydrogenated castor oil, RH-40) were used to produce the nanomicelles. The physical-chemical characterization of the nanomicelles in terms of CyA entrapment (EE%) and loading efficiency (LE%), cloud point (CP), regeneration time (RT), size and polydispersity index (PI) allowed us to select the best combination of surfactant mixture, which showed appropriate stability, high CyA-EE (99.07%), very small and homogeneous dimensions and favored the solubilization of an amount of CyA (0.144% w/w) comparable to that contained in marketed emulsion Ikervis®. The selected nanomicellar formulation incorporated into optimized ion-sensitive polymeric dispersions of gellan gum (GG-LA: 0.10, 0.15 and 0.20% w/w) able to trigger the sol-gel transition after instillation was characterized from technological (osmolality, pH, gelling capacity, rheological behavior, wettability, TEM and storage stability at 4 and 20 °C) and biopharmaceutical points of view. This new combined approach allowed us to obtain clear aqueous dispersions that were easy to instill and able to form a viscous gel when in contact with the tear fluid, improving CyA ocular bioavailability. Furthermore, this new ODDS prevented CyA transcorneal permeation, exhibited low cytotoxicity and prolonged the CyA resident time in the precorneal area compared to Ikervis®.
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Affiliation(s)
- Eleonora Terreni
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (E.T.); (E.Z.); (S.B.); (D.M.); (P.C.)
| | - Erica Zucchetti
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (E.T.); (E.Z.); (S.B.); (D.M.); (P.C.)
| | - Silvia Tampucci
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (E.T.); (E.Z.); (S.B.); (D.M.); (P.C.)
- Centro 3R (Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research), 56122 Pisa, Italy
- Correspondence:
| | - Susi Burgalassi
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (E.T.); (E.Z.); (S.B.); (D.M.); (P.C.)
- Centro 3R (Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research), 56122 Pisa, Italy
| | - Daniela Monti
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (E.T.); (E.Z.); (S.B.); (D.M.); (P.C.)
- Centro 3R (Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research), 56122 Pisa, Italy
| | - Patrizia Chetoni
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (E.T.); (E.Z.); (S.B.); (D.M.); (P.C.)
- Centro 3R (Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research), 56122 Pisa, Italy
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Nair R, Roy Choudhury A. Synthesis and rheological characterization of a novel shear thinning levan gellan hydrogel. Int J Biol Macromol 2020; 159:922-930. [DOI: 10.1016/j.ijbiomac.2020.05.119] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 05/11/2020] [Accepted: 05/15/2020] [Indexed: 12/20/2022]
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8
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New gellan gum-graft-poly(d,l-lactide-co-glycolide) copolymers as promising bioinks: Synthesis and characterization. Int J Biol Macromol 2020; 162:1653-1667. [PMID: 32777413 DOI: 10.1016/j.ijbiomac.2020.07.254] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/14/2020] [Accepted: 07/20/2020] [Indexed: 01/07/2023]
Abstract
This research focused on the aim of tackling the urgent demand of printable biomaterials, hence we synthetized and characterized three gellan gum-graft-poly(d,l-lactide-co-glycolide) copolymers (GGm-PLGA a, b and c) which differed in the graft substitution degree. We investigated the effect of the polyester chain grafted onto hydrophilic backbone of gellan gum in terms of physicochemical properties and the ability of the system to print 3D cell laden constructs. In particular, we evaluated thermo-rheological, ionotropic crosslinking, shear thinning, swelling and stability properties of these copolymers and their derived biomaterials and findings related to the degree of functionalization. Moreover, the optimization of the 3D process parameters and the effect of different water/DPBS mixtures was investigated, demonstrating the feasibility of the system to print 3D constructs. Finally, biological tests revealed that fibroblasts and chondrocytes remained viable after printing and over a culture period of seven days into scaffolds.
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Agrawal M, Saraf S, Saraf S, Dubey SK, Puri A, Gupta U, Kesharwani P, Ravichandiran V, Kumar P, Naidu VGM, Murty US, Ajazuddin, Alexander A. Stimuli-responsive In situ gelling system for nose-to-brain drug delivery. J Control Release 2020; 327:235-265. [PMID: 32739524 DOI: 10.1016/j.jconrel.2020.07.044] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/26/2020] [Accepted: 07/27/2020] [Indexed: 12/15/2022]
Abstract
The diagnosis and treatment of neurological ailments always remain an utmost challenge for research fraternity due to the presence of BBB. The intranasal route appeared as an attractive and alternative route for brain targeting of therapeutics without the intrusion of BBB and GI exposure. This route directly and effectively delivers the therapeutics to different regions of the brain via olfactory and trigeminal nerve pathways. However, shorter drug retention time and mucociliary clearance curtail the efficiency of the intranasal route. The in situ mucoadhesive gel overthrow the limitations of direct nose-to-brain delivery by not only enhancing nasal residence time but also minimizing the mucociliary clearance and enzymatic degradation. This delivery system further improves the nasal absorption as well as bioavailability of drugs in the brain. The in situ mucoadhesive gel is a controlled and sustained release system that facilitates the absorption of various proteins, peptides and other larger lipophilic and hydrophilic moieties. Owing to multiple benefits, in situ gelling system has been widely explored to target the brain via nasal route. However, very few review works are reported which explains the application of in situ nasal gel for brain delivery of CNS acting moieties. Hence, in this piece of work, we have initially discussed the global statistics of neurological disorders reported by WHO and other reputed organizations, nasal anatomy, mechanism and challenges of nose-to-brain drug delivery. The work mainly focused on the use of different stimuli-responsive polymers, specifically thermoresponsive, pH-responsive, and ion triggered systems for the development of an effective and controlled dosage form, i.e., in situ nasal gel for brain targeting of bioactives. We have also highlighted the origin, structure, nature and phase transition behavior of the smart polymers found suitable for nasal administration, including poloxamer, chitosan, EHEC, xyloglucan, Carbopol, gellan gum and DGG along with their application in the treatment of neurological disorders. The article is aimed to gather all the information of the past 10 years related to the development and application of stimuli-responsive in situ nasal gel for brain drug delivery.
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Affiliation(s)
- Mukta Agrawal
- Rungta College of Pharmaceutical Sciences and Research, Kohka-Kurud Road, Bhilai, Chhattisgarh 490024, India
| | - Shailendra Saraf
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur 492010, Chhattisgarh, India
| | - Swarnlata Saraf
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur 492010, Chhattisgarh, India
| | - Sunil K Dubey
- Department of Pharmacy, Birla Institute of Technology and Science, (BITS-PILANI), Pilani Campus, Pilani, Rajasthan, India
| | - Anu Puri
- RNA Structure and Design Section, RNA Biology Laboratory (RBL), Center for Cancer Research, NCI-Frederick, NIH, Frederick, USA
| | - Umesh Gupta
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer, Rajasthan 305817, India
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - V Ravichandiran
- National Institute of Pharmaceutical Education and Research (NIPER-Kolkata), Department of Pharmaceuticals, Ministry of Chemicals & Fertilizers, Govt. of India, Chunilal Bhawan 168, Maniktala Main Road, Kolkata 700054, India
| | - Pramod Kumar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER-Guwahati), Department of Pharmaceuticals, Ministry of Chemicals & Fertilizers, Govt. of India, Sila Katamur (Halugurisuk), Changsari, Kamrup-781101, Guwahati, Assam, India
| | - V G M Naidu
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER-Guwahati), Department of Pharmaceuticals, Ministry of Chemicals & Fertilizers, Govt. of India, Sila Katamur (Halugurisuk), Changsari, Kamrup-781101, Guwahati, Assam, India
| | - Upadhyayula Suryanarayana Murty
- National Institute of Pharmaceutical Education and Research (NIPER-Guwahati), Department of Pharmaceuticals, Ministry of Chemicals & Fertilizers, Govt. of India, Sila Katamur (Halugurisuk), Changsari, Kamrup-781101, Guwahati, Assam, India
| | - Ajazuddin
- Rungta College of Pharmaceutical Sciences and Research, Kohka-Kurud Road, Bhilai, Chhattisgarh 490024, India
| | - Amit Alexander
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER-Guwahati), Department of Pharmaceuticals, Ministry of Chemicals & Fertilizers, Govt. of India, Sila Katamur (Halugurisuk), Changsari, Kamrup-781101, Guwahati, Assam, India.
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Shukla S, Favata J, Srivastava V, Shahbazmohamadi S, Tripathi A, Shukla A. Effect of polymer and ion concentration on mechanical and drug release behavior of gellan hydrogels using factorial design. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20190205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Shashank Shukla
- School of Engineering, Brown University Providence Rhode Island USA
- Center for Biomedical Engineering Brown University Providence Rhode Island USA
| | - Joseph Favata
- REFINE Lab University of Connecticut Storrs Connecticut USA
| | - Vikas Srivastava
- School of Engineering, Brown University Providence Rhode Island USA
- Center for Biomedical Engineering Brown University Providence Rhode Island USA
| | | | - Anubhav Tripathi
- School of Engineering, Brown University Providence Rhode Island USA
- Center for Biomedical Engineering Brown University Providence Rhode Island USA
- Institute for Molecular and Nanoscale Innovation, Brown University Providence Rhode Island USA
| | - Anita Shukla
- School of Engineering, Brown University Providence Rhode Island USA
- Center for Biomedical Engineering Brown University Providence Rhode Island USA
- Institute for Molecular and Nanoscale Innovation, Brown University Providence Rhode Island USA
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Thermo-sensitive gellan maleate/N-isopropylacrylamide hydrogels: initial “in vitro” and “in vivo” evaluation as ocular inserts. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02772-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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12
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García MC, Sánchez S, Trujillo-Cayado LA, Muñoz J, Alfaro MC. Tackling slip effects in the nonlinear flow properties of gellan fluid gels. J Appl Polym Sci 2019. [DOI: 10.1002/app.46900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mª Carmen García
- Departamento de Ingeniería Química; Universidad de Sevilla; Seville 41012 Spain
| | - Sergio Sánchez
- Departamento de Ingeniería Química; Universidad de Sevilla; Seville 41012 Spain
| | | | - José Muñoz
- Departamento de Ingeniería Química; Universidad de Sevilla; Seville 41012 Spain
| | - Mª Carmen Alfaro
- Departamento de Ingeniería Química; Universidad de Sevilla; Seville 41012 Spain
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Ismail NA, Amin KAM, Razali MH. Preparation of Gellan Gum (GG) Film: The effect of GG, Calcium Chloride (CaCl2), Glycerol Concentration and Heat Treatment. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/440/1/012006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Acidified/basified gellan gum gels: The role of the structure in drying/rehydration mechanisms. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2018.04.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Gellan gum fluid gels: influence of the nature and concentration of gel-promoting ions on rheological properties. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4396-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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16
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Zia KM, Tabasum S, Khan MF, Akram N, Akhter N, Noreen A, Zuber M. Recent trends on gellan gum blends with natural and synthetic polymers: A review. Int J Biol Macromol 2017; 109:1068-1087. [PMID: 29157908 DOI: 10.1016/j.ijbiomac.2017.11.099] [Citation(s) in RCA: 166] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 10/04/2017] [Accepted: 11/15/2017] [Indexed: 01/14/2023]
Abstract
Gellan gum (GG), a linear negatively charged exopolysaccharide,is biodegradable and non-toxic in nature. It produces hard and translucent gel in the presence of metallic ions which is stable at low pH. However, GG has poor mechanical strength, poor stability in physiological conditions, high gelling temperature and small temperature window.Therefore,it is blended with different polymers such as agar, chitosan, cellulose, sodium alginate, starch, pectin, polyanaline, pullulan, polyvinyl chloride, and xanthan gum. In this article, a comprehensive overview of combination of GG with natural and synthetic polymers/compounds and their applications in biomedical field involving drug delivery system, insulin delivery, wound healing and gene therapy, is presented. It also describes the utilization of GG based materials in food and petroleum industry. All the technical scientific issues have been addressed; highlighting the recent advancement.
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Affiliation(s)
- Khalid Mahmood Zia
- Institute of Chemistry, Government College University, Faisalabad, 38030, Pakistan.
| | - Shazia Tabasum
- Institute of Chemistry, Government College University, Faisalabad, 38030, Pakistan
| | - Muhammad Faris Khan
- Institute of Chemistry, Government College University, Faisalabad, 38030, Pakistan; Department of Allied Health Sciences, Government College University, Faisalabad, 38030, Pakistan
| | - Nadia Akram
- Institute of Chemistry, Government College University, Faisalabad, 38030, Pakistan
| | - Naheed Akhter
- Department of Allied Health Sciences, Government College University, Faisalabad, 38030, Pakistan
| | - Aqdas Noreen
- Institute of Chemistry, Government College University, Faisalabad, 38030, Pakistan
| | - Mohammad Zuber
- Institute of Chemistry, Government College University, Faisalabad, 38030, Pakistan
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17
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Creep-recovery-creep tests to determine the yield stress of fluid gels containing gellan gum and Na+. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.07.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Trujillo-Cayado L, Alfaro M, Raymundo A, Sousa I, Muñoz J. Rheological behavior of aqueous dispersions containing blends of rhamsan and welan polysaccharides with an eco-friendly surfactant. Colloids Surf B Biointerfaces 2016; 145:430-437. [DOI: 10.1016/j.colsurfb.2016.05.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 04/15/2016] [Accepted: 05/05/2016] [Indexed: 10/21/2022]
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19
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Trujillo-Cayado LA, García MC, Muñoz J, Alfaro MC. Development, rheological properties, and physical stability ofd-limonene-in-water emulsions formulated with copolymers as emulsifiers. J Appl Polym Sci 2016. [DOI: 10.1002/app.43838] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Luis A. Trujillo-Cayado
- Reología Aplicada, Tecnología De Coloides, Departamento De Ingeniería Química, Facultad De Química; Universidad De Sevilla C/P. García González; Sevilla E41012 Spain
| | - M. Carmen García
- Reología Aplicada, Tecnología De Coloides, Departamento De Ingeniería Química, Facultad De Química; Universidad De Sevilla C/P. García González; Sevilla E41012 Spain
| | - José Muñoz
- Reología Aplicada, Tecnología De Coloides, Departamento De Ingeniería Química, Facultad De Química; Universidad De Sevilla C/P. García González; Sevilla E41012 Spain
| | - M. Carmen Alfaro
- Reología Aplicada, Tecnología De Coloides, Departamento De Ingeniería Química, Facultad De Química; Universidad De Sevilla C/P. García González; Sevilla E41012 Spain
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Trujillo-Cayado L, Alfaro M, Muñoz J, Raymundo A, Sousa I. Development and rheological properties of ecological emulsions formulated with a biosolvent and two microbial polysaccharides. Colloids Surf B Biointerfaces 2016; 141:53-58. [DOI: 10.1016/j.colsurfb.2015.11.046] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 10/15/2015] [Accepted: 11/24/2015] [Indexed: 11/16/2022]
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21
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Nakasone K, Kobayashi T. Cytocompatible cellulose hydrogels containing trace lignin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 64:269-277. [PMID: 27127053 DOI: 10.1016/j.msec.2016.03.108] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 02/27/2016] [Accepted: 03/23/2016] [Indexed: 11/29/2022]
Abstract
Sugarcane bagasse was used as a cellulose resource to prepare transparent and flexible cellulose hydrogel films. On the purification process from bagasse to cellulose, the effect of lignin residues in the cellulose was examined for the properties and cytocompatibility of the resultant hydrogel films. The cellulose was dissolved in lithium chloride/N,N-dimethylacetamide solution and converted to hydrogel films by phase inversion. In the purification process, sodium hydroxide (NaOH) treatment time was changed from 1 to 12h. This resulted in cellulose hydrogel films having small amounts of lignin from 1.62 to 0.68%. The remaining lignin greatly affected hydrogel properties. Water content of the hydrogel films was increased from 1153 to 1525% with a decrease of lignin content. Moreover, lower lignin content caused weakening of tensile strength from 0.80 to 0.43N/mm(2) and elongation from 45.2 to 26.5%. Also, similar tendency was observed in viscoelastic behavior of the cellulose hydrogel films. Evidence was shown that the lignin residue was effective for the high strength of the hydrogel films. In addition, scanning probe microscopy in the morphological observation was suggested that the trace lignin in the cellulose hydrogel affected the cellulose fiber aggregation in the hydrogel network. The trace of lignin in the hydrogels also influenced fibroblast cell culture on the hydrogel films. The hydrogel film containing 1.68% lignin showed better fibroblast compatibility as compared to cell culture polystyrene dish used as reference.
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Affiliation(s)
- Kazuki Nakasone
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
| | - Takaomi Kobayashi
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
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Posadowska U, Brzychczy-Włoch M, Drożdż A, Krok-Borkowicz M, Włodarczyk-Biegun M, Dobrzyński P, Chrzanowski W, Pamuła E. Injectable hybrid delivery system composed of gellan gum, nanoparticles and gentamicin for the localized treatment of bone infections. Expert Opin Drug Deliv 2016; 13:613-20. [PMID: 26805778 DOI: 10.1517/17425247.2016.1146673] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Bone infections are treated with antibiotics administered intravenously, antibiotic-releasing bone cements or collagen sponges placed directly in the infected area. These approaches render limited effectiveness due to the lack of site specificity and invasiveness of implanting cements and sponges. To address these limitations, we developed a novel polysaccharide hydrogel-based injectable system that enables controlled delivery of gentamicin (GENT). Its advantages are minimal invasiveness, and localized and finely regulated release of the drug. METHODS GENT was incorporated both directly within the gellan gum hydrogel and into poly(L-lactide-co-glycolide) nanoparticles embedded into the hydrogel. RESULTS We confirmed the injectability of the system and measured extrusion force was 15.6 ± 1.0 N, which is suitable for injections. The system set properly after the injection as shown by rheological measurements. Desired burst release of the drug was observed within the first 12 h and the dose reached ~27% of total GENT. Subsequently, GENT was released gradually and sustainably: ~60% of initial dose within 90 days. In vitro studies confirmed antimicrobial activity of the system against Staphylococcus spp. and cytocompatibility with osteoblast-like cells. CONCLUSIONS Developed injectable system enables minimally invasive, local and sustained delivery of the pharmaceutically relevant doses of GENT to combat bone infections.
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Affiliation(s)
- Urszula Posadowska
- a Department of Biomaterials, Faculty of Materials Science and Ceramics , AGH University of Science and Technology , Krakow , Poland
| | - Monika Brzychczy-Włoch
- b Department of Microbiology, Medical College , Jagiellonian University , Krakow , Poland
| | - Anna Drożdż
- a Department of Biomaterials, Faculty of Materials Science and Ceramics , AGH University of Science and Technology , Krakow , Poland
| | - Małgorzata Krok-Borkowicz
- a Department of Biomaterials, Faculty of Materials Science and Ceramics , AGH University of Science and Technology , Krakow , Poland
| | | | - Piotr Dobrzyński
- d Center of Polymer and Carbon Materials , Polish Academy of Sciences , Zabrze , Poland
| | | | - Elżbieta Pamuła
- a Department of Biomaterials, Faculty of Materials Science and Ceramics , AGH University of Science and Technology , Krakow , Poland
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Nakasone K, Kobayashi T. Effect of pre-treatment of sugarcane bagasse on the cellulose solution and application for the cellulose hydrogel films. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3757] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kazuki Nakasone
- Department of Materials Science and Technology; Nagaoka University of Technology; 1603-1 Kamitomioka Nagaoka Niigata 940-2188 Japan
| | - Takaomi Kobayashi
- Department of Materials Science and Technology; Nagaoka University of Technology; 1603-1 Kamitomioka Nagaoka Niigata 940-2188 Japan
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Liu R, Zhao S, Regenstein JM, Liu Q, Yang H, Xiong S. Gelling Properties of Fish/Pork Mince Mixtures. J Food Sci 2016; 81:C301-7. [DOI: 10.1111/1750-3841.13188] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 11/17/2015] [Indexed: 11/26/2022]
Affiliation(s)
- Ru Liu
- College of Food Science and Technology; Huazhong Agricultural Univ; Wuhan Hubei Province 430070 P. R. China
- Natl. R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan); Wuhan Hubei Province 430070 P. R. China
| | - Siming Zhao
- College of Food Science and Technology; Huazhong Agricultural Univ; Wuhan Hubei Province 430070 P. R. China
- Natl. R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan); Wuhan Hubei Province 430070 P. R. China
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural Univ; Ministry of Education; Wuhan Hubei Province 430070 P. R. China
| | - Joe M Regenstein
- Dept. of Food Science; Cornell Univ; Ithaca N.Y. 14853-7201 U.S.A
| | - Qing Liu
- College of Food Science and Technology; Huazhong Agricultural Univ; Wuhan Hubei Province 430070 P. R. China
- Natl. R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan); Wuhan Hubei Province 430070 P. R. China
| | - Hong Yang
- Natl. R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan); Wuhan Hubei Province 430070 P. R. China
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural Univ; Ministry of Education; Wuhan Hubei Province 430070 P. R. China
| | - Shanbai Xiong
- College of Food Science and Technology; Huazhong Agricultural Univ; Wuhan Hubei Province 430070 P. R. China
- Natl. R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan); Wuhan Hubei Province 430070 P. R. China
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural Univ; Ministry of Education; Wuhan Hubei Province 430070 P. R. China
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Ruiz SP, Martinez CO, Noce AS, Sampaio AR, Baesso ML, Matioli G. Biosynthesis of succinoglycan by Agrobacterium radiobacter NBRC 12665 immobilized on loofa sponge and cultivated in sugar cane molasses. Structural and rheological characterization of biopolymer. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2015.08.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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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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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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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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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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Posadowska U, Parizek M, Filova E, Wlodarczyk-Biegun M, Kamperman M, Bacakova L, Pamula E. Injectable nanoparticle-loaded hydrogel system for local delivery of sodium alendronate. Int J Pharm 2015; 485:31-40. [PMID: 25747455 DOI: 10.1016/j.ijpharm.2015.03.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 02/28/2015] [Accepted: 03/02/2015] [Indexed: 11/24/2022]
Abstract
Systemic administration of bisphosphonates, e.g. sodium alendronate (Aln) is characterized by extremely low bioavailability and high toxicity. To omit aforementioned drawbacks an injectable system for the intra-bone delivery of Aln based on Aln-loaded nanoparticles (NPs-Aln) suspended in a hydrogel matrix (gellan gum, GG) was developed. Aln was encapsulated in poly(lactide-co-glycolide) (PLGA 85:15) by solid-oil-water emulsification. Drug release tests showed that within 25 days all the encapsulated drug was released from NPs-Aln and the release rate was highest at the beginning and decreased with time. In contrast, by suspending NPs-Aln in a GG matrix, the release rate was significantly lower and more constant in time. The GG-NPs-Aln system was engineered to be easily injectable and was able to reassemble its structure after extrusion as shown by rheological measurements. Invitro studies showed that the GG-NPs-Aln was cytocompatible with MG-63 osteoblast-like cells and it inhibited RANKL-mediated osteoclastic differentiation of RAW 264.7 cells. The injectability, the sustained local delivery of small doses of Aln and the biological activity render the GG-NPs-Aln system promising for the local treatment of osteoporosis and other bone tissue disorders.
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Affiliation(s)
- Urszula Posadowska
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Biomaterials, al. A. Mickiewicza 30, 30-059 Krakow, Poland.
| | - Martin Parizek
- Academy of Sciences of the Czech Republic, Institute of Physiology, Department of Biomaterials and Tissue Engineering, Videnska 1083, 14220 Prague 4-Krc, Czech Republic.
| | - Elena Filova
- Academy of Sciences of the Czech Republic, Institute of Physiology, Department of Biomaterials and Tissue Engineering, Videnska 1083, 14220 Prague 4-Krc, Czech Republic.
| | - Malgorzata Wlodarczyk-Biegun
- Wageningen University, Laboratory of Physical Chemistry and Colloid Science, Dreijenplein 6, 6703HB, Wageningen, The Netherlands.
| | - Marleen Kamperman
- Wageningen University, Laboratory of Physical Chemistry and Colloid Science, Dreijenplein 6, 6703HB, Wageningen, The Netherlands.
| | - Lucie Bacakova
- Academy of Sciences of the Czech Republic, Institute of Physiology, Department of Biomaterials and Tissue Engineering, Videnska 1083, 14220 Prague 4-Krc, Czech Republic.
| | - Elzbieta Pamula
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Biomaterials, al. A. Mickiewicza 30, 30-059 Krakow, Poland.
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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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Application of gellan gum in pharmacy and medicine. Int J Pharm 2014; 466:328-40. [DOI: 10.1016/j.ijpharm.2014.03.038] [Citation(s) in RCA: 227] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 03/17/2014] [Accepted: 03/18/2014] [Indexed: 01/01/2023]
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35
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Physicochemical and rheological characterization of Prosopis juliflora seed gum aqueous dispersions. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2013.06.013] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bradbeer JF, Hancocks R, Spyropoulos F, Norton IT. Self-structuring foods based on acid-sensitive low and high acyl mixed gellan systems to impact on satiety. Food Hydrocoll 2014; 35:522-530. [PMID: 24882914 PMCID: PMC4025606 DOI: 10.1016/j.foodhyd.2013.07.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 07/16/2013] [Indexed: 11/16/2022]
Abstract
This study investigated the in vitro acid-induced gelation of mixed systems of two biopolymers; low acyl and high acyl gellan gum. Rheological and texture analysis showed that these mixed gels displayed textures that lay between the material properties exhibited for the low and high acyl variants. DSC analysis showed that mixtures of the low acyl and high acyl forms exhibit two separate conformational transitions at temperatures coincident with each of the individual biopolymers. Various metabolically relevant pH environments and hydrocolloid concentrations were investigated. These resulted in very different acid gelled structures, which were characterised by texture analysis. The structures of the acid gels were shown to depend upon the pH, hydrocolloid concentration and proportion of each biopolymer used during their production. A selection of these mixed gellan structures were assessed post-production in terms of their response to prolonged exposure to an acidic (pH 1), stomach-like, environment. This resulted in a significant increase in the gel strength, regardless of the biopolymer proportions. The high acyl gellan was less acid-sensitive, and subsequently no evidence of acid gelation was observed with high acyl gellan at a proportion greater than 60% of the total biopolymer. The findings presented here demonstrate that structuring as well as de-structuring of mixed gellan acid gels can be controlled in acidic environments similar to those that are present in the stomach after food consumption.
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Affiliation(s)
- Jennifer F. Bradbeer
- Department of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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García MC, Alfaro MC, Calero N, Muñoz J. Influence of polysaccharides on the rheology and stabilization of α-pinene emulsions. Carbohydr Polym 2014; 105:177-83. [PMID: 24708967 DOI: 10.1016/j.carbpol.2014.01.055] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 12/19/2013] [Accepted: 01/15/2014] [Indexed: 10/25/2022]
Abstract
This work focuses on the need to include polysaccharides in a slightly concentrated O(α-pinene)/W emulsion, formulated with amphiphilic copolymers as emulsifiers. Rheology, laser diffraction and multiple light scattering were the main techniques used to assess the performance of gellan gum, xanthan gum and a mixture of both hydrocolloids as stabilizers. Small amplitude oscillatory shear results were consistent with the existence of three distinct microstructures and relaxation mechanisms, which depended on the hydrocolloid system used. The mechanical spectrum of the emulsion containing both polysaccharides signalled the occurrence of thermodynamic incompatibility between the two. Flow curves fitted to the Carreau-Yasuda model demonstrated a negative synergistic effect between gellan and xanthan gums. The droplet size distribution was similar for these systems, which highlighted the importance of the continuous phase for emulsion stability. Multiple light scattering illustrated that creaming was practically eliminated by the incorporation of polysaccharides, coalescence being the main destabilization mechanism.
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Affiliation(s)
- Ma Carmen García
- Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, C/Profesor García González, s/n, 41012 Sevilla, Spain
| | - Ma Carmen Alfaro
- Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, C/Profesor García González, s/n, 41012 Sevilla, Spain.
| | - Nuria Calero
- Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, C/Profesor García González, s/n, 41012 Sevilla, Spain
| | - José Muñoz
- Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, C/Profesor García González, s/n, 41012 Sevilla, Spain
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Hellriegel J, Günther S, Kampen I, Bolea Albero A, Kwade A, Böl M, Krull R. A Biomimetic Gellan-Based Hydrogel as a Physicochemical Biofilm Model. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/jbnb.2014.52011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Shewan HM, Stokes JR. Review of techniques to manufacture micro-hydrogel particles for the food industry and their applications. J FOOD ENG 2013. [DOI: 10.1016/j.jfoodeng.2013.06.046] [Citation(s) in RCA: 176] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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40
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Pérez-Mosqueda L, Ramírez P, Alfaro M, Rincón F, Muñoz J. Surface properties and bulk rheology of Sterculia apetala gum exudate dispersions. Food Hydrocoll 2013. [DOI: 10.1016/j.foodhyd.2013.02.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Singh RMP, Kumar A, Pathak K. Mucoadhesive in situ nasal gelling drug delivery systems for modulated drug delivery. Expert Opin Drug Deliv 2012. [PMID: 23199072 DOI: 10.1517/17425247.2013.746659] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
INTRODUCTION The nasal route is an attractive target for administration of the drug of choice, particularly in overcoming disadvantages such as high first-pass metabolism and drug degradation in the gastrointestinal environment that are associated with the oral and other modes of administration. The major limitation associated is of rapid mucociliary clearance in the nasal delivery that results in low absorption and hence poor bioavailability. In order to overcome this, mucoadhesive in situ nasal gelling drug delivery systems have been explored to develop sustained/controlled delivery via nasal route. AREAS COVERED The present review critically evaluates the importance of in situ gel for the nasal delivery of drugs, and the polymers used in the formulation of in situ gel along with their mechanism of gelation. It also encompasses the research reports made in this arena of delivery system. EXPERT OPINION The challenges of drug delivery through nose has led to development of in situ nasal gelling systems using a myriad of polymers to deliver the drugs, proteins, amino acids, hormones, vaccines and plasmid DNA for the local, systemic and central nervous system effects. Though a range of preclinical reports are available, clinical intricacies need to be critically worked out.
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Affiliation(s)
- Reena M P Singh
- Department of Pharmaceutics, Rajiv Academy for Pharmacy, PO Chhattikara, Mathura 281001, Uttar Pradesh, India
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