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Jeong JP, Yoon I, Kim K, Jung S. Structural and Physiochemical Properties of Polyvinyl Alcohol-Succinoglycan Biodegradable Films. Polymers (Basel) 2024; 16:1783. [PMID: 39000639 PMCID: PMC11244272 DOI: 10.3390/polym16131783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 06/20/2024] [Accepted: 06/21/2024] [Indexed: 07/17/2024] Open
Abstract
Polyvinyl alcohol (PVA)-bacterial succinoglycan (SG) biodegradable films were developed through a solvent-casting method. Effects of the PVA/SG ratio on the thickness, transmittance, water holding capacity, and structural and mechanical properties were investigated by various analytical methods. All the prepared films were transparent and uniform, and XRD and FTIR analyses confirmed that PVA was successfully incorporated into SG. The films also showed excellent UV-blocking ability: up to close to 80% with increasing SG concentration. The formation of effective intermolecular interactions between these polymers was evidenced by their high tensile strength and moisture transport capacity. By measuring the biodegradation rate, it was confirmed that films with high SG content showed the fastest biodegradation rate over 5 days. These results confirm that PVA/SG films are eco-friendly, with both excellent biodegradability and effective UV-blocking ability, suggesting the possibility of industrial applications as a packaging material in various fields in the future.
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Affiliation(s)
- Jae-Pil Jeong
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Inwoo Yoon
- Department of System Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Kyungho Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Seunho Jung
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
- Department of System Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
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2
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Duceac IA, Coseri S. Biopolymers and their derivatives: Key components of advanced biomedical technologies. Biotechnol Adv 2022; 61:108056. [DOI: 10.1016/j.biotechadv.2022.108056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/26/2022] [Accepted: 10/23/2022] [Indexed: 11/02/2022]
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3
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Dzionek A, Wojcieszyńska D, Guzik U. Use of xanthan gum for whole cell immobilization and its impact in bioremediation - a review. BIORESOURCE TECHNOLOGY 2022; 351:126918. [PMID: 35231596 DOI: 10.1016/j.biortech.2022.126918] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/23/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Xanthan gum is one of the exo-polysaccharides produced by bacteria and is characterized by unique non-Newtonian properties. Its structure and conformation strongly depend on the fermentation conditions and such factors as temperature and ions concentration. The properties of the xanthan gum were appreciated in the controlled drug delivery but in the crosslinked form. Due to its ability to enhance the survival rate of immobilized bacteria, the potential of a crosslinked form is promising. Unfortunately, xanthan gum crosslinking procedures often require toxic substances or harsh environmental conditions, which cannot be used in the entrapment of living cells. In this study, we summarised a crosslinking method that could potentially be modified to reduce its toxicity to living cells. Moreover, this review also includes using xanthan gum in bioremediation studies and possible utilization methods to avoid carrier accumulation in the environment.
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Affiliation(s)
- Anna Dzionek
- University of Silesia in Katowice, Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, Jagiellońska 28, 40-032 Katowice, Poland.
| | - Danuta Wojcieszyńska
- University of Silesia in Katowice, Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, Jagiellońska 28, 40-032 Katowice, Poland
| | - Urszula Guzik
- University of Silesia in Katowice, Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, Jagiellońska 28, 40-032 Katowice, Poland
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4
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Mir TA, Ali A, Mazumdar N. Glycerol-crosslinked guar gum monoaldehyde based superabsorbent hydrogels for vitamin B6 (pyridoxine hydrochloride) delivery. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04184-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Demir GC, Erdemli Ö, Keskin D, Tezcaner A. Xanthan-gelatin and xanthan-gelatin-keratin wound dressings for local delivery of Vitamin C. Int J Pharm 2021; 614:121436. [PMID: 34974152 DOI: 10.1016/j.ijpharm.2021.121436] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/21/2021] [Accepted: 12/26/2021] [Indexed: 01/17/2023]
Abstract
Recently, functional dressings that can protect the wound area from dehydration and bacterial infection and support healing have gained importance in place of passive dressings. This study aimed to develop temporary and regenerative xanthan/gelatin (XGH) and keratin/xanthan/gelatin hydrogels (KXGHs) that have high absorption capacity and applicability as a wound dressing that can provide local delivery of Vitamin C (VC). Firstly, xanthan/gelatin hydrogels were produced by crosslinking with different glycerol concentrations and characterized to determine the hydrogel composition. According to their weight ratios, xanthan, gelatin, and glycerol hydrogels are named. If their weight ratio is 1:1:2 (w/w/w), the group name is selected as X1:GEL1:GLY2. X1:GEL1:GLY2 hydrogel was selected for biocompatibility, mechanical property, water vapor transmission rate (WVTR), and porosity. The addition of keratin to X1:GEL1:GLY2 improved L929 fibroblasts viability and increased protein release. Water vapor transmission of XGHs and KXGHs was between 3059.09 ± 126 and 4523 ± 133 g m-2 d-1; therefore, they can be suitable for granulating, low to moderate exudate wounds. XGH and KXGHs loaded with VC had higher water uptake, making it more convenient for exudate wounds. VC was released for 100 h, and VC containing XGHs and KXGHs increased the collagen synthesis of L929 fibroblasts. All of the hydrogels (XGH, KXGH, and VC-KXGHs) inhibited the bacteria transmission. In conclusion, our results suggest that VC-XGH and VC-KXGH can be candidates for temporary wound dressing materials for skin wounds.
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Affiliation(s)
- Gizem Cigdem Demir
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey
| | - Özge Erdemli
- Department of Molecular Biology and Genetics, Başkent University, Turkey
| | - Dilek Keskin
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey; Department of Engineering Sciences, Middle East Technical University, Turkey; BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering Research Center, Middle East Technical University, Turkey
| | - Ayşen Tezcaner
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey; Department of Engineering Sciences, Middle East Technical University, Turkey; BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering Research Center, Middle East Technical University, Turkey.
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6
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Effect of Cryostructuring Treatment on Some Properties of Xanthan and Karaya Cryogels for Food Applications. Molecules 2021; 26:molecules26092788. [PMID: 34065084 PMCID: PMC8125894 DOI: 10.3390/molecules26092788] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/30/2021] [Accepted: 05/06/2021] [Indexed: 11/16/2022] Open
Abstract
Cryogels are novel materials because the manufacturing process known as cryostructuring allows biopolymers to change their properties as a result of repeated controlled freeze-thaw cycles. Hydrogels of xanthan and karaya gums were evaluated after undergoing up to four controlled freeze-thaw cycles in indirect contact with liquid nitrogen (up to -150 °C) to form cryogels. Changes in structural, molecular, rheological, and thermal properties were evaluated and compared to those of their respective hydrogels. Samples were also analyzed by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy with Attenuated Total Reflection (FTIR-ATR), Rotational Rheology (RR), Modulated Differential Scanning Calorimetry (MDSC) and zeta potential (ζ). In general, significant differences (p < 0.05) between the numbers of freeze-thaw cycles were found. Karaya cryogels were not stable to repeated cycles of cryostructuring such as the three-cycle xanthan cryogel, which has the best structural order (95.55%), molecular interactions, and thermal stability, which allows the generation of a novel material with improved thermal and structural properties that can be used as an alternative in food preservation.
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7
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Effect of Regenerated Cellulose Fibers Derived from Black Oat on Functional Properties of PVA-Based Biocomposite Film. Processes (Basel) 2020. [DOI: 10.3390/pr8091149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
In this study, agricultural residue from black oat, a cover crop usually grown to improve soil nutrients between the periods of regular crop production, was used as a source of cellulose fibers. Concentrations of 1, 3, and 5 wt. % of regenerated cellulose (RC) fibers blended in poly(vinyl alcohol) (PVA) solution were used to prepare the reinforced composite films (CFs) by the solvent cast method. Compared to neat PVA film (control), the effects of RC addition on functional properties of CFs, such as water absorption, transparency, thermal stability, and mechanical property were investigated. All CFs with different RC concentrations exhibited improved mechanical property and thermal stability while the swelling property was decreased, and no significant changes were observed in the film transparency as compared with the control film. Among the CFs, films with 3% RC significantly decreased water vapor transmission rate, swelling, and soluble fraction (p < 0.05). In addition, Young’s modulus and tensile strength were increased by 40 MPa and 3 MPa, respectively, while elongation at break was decreased by 4%, compared to the control film. The results indicate that RC from black oat might be feasible as potential bio fillers to improve film properties in a bio-based composite matrix.
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8
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Eco-Friendly Cellulose Nanofiber Extraction from Sugarcane Bagasse and Film Fabrication. SUSTAINABILITY 2020. [DOI: 10.3390/su12156015] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The development of cost-effective cellulose fibers by utilizing agricultural residues have been attracted by the scientific community in the past few years; however, a facile production route along with minimal processing steps and a significant reduction in harsh chemical use is still lacking. Here, we report a straightforward ultrasound-assisted method to extract cellulose nanofiber (CNF) from fibrous waste sugarcane bagasse. X-ray diffraction-based crystallinity calculation showed 25% increase in the crystallinity of the extracted CNF (61.1%) as compared to raw sugarcane bagasse (35.1%), which is coherent with Raman studies. Field emission scanning electron microscopy (FE-SEM) images revealed thread-like CNF structures. Furthermore, we prepared thin films of the CNF using hot press and solution casting method and compared their mechanical properties. Our experiments demonstrated that hot press is a more effective way to produce high strength CNF films; Young’s modulus of the thin films prepared from the hot press was ten times higher than the solution casting method. Our results suggest that a combination of ultrasound-based extraction and hot press-based film preparation is an efficient route of producing high strength CNF films.
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9
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Pectin–glycerol gel beads: Preparation, characterization and swelling behaviour. Carbohydr Polym 2020; 238:116166. [DOI: 10.1016/j.carbpol.2020.116166] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 03/11/2020] [Accepted: 03/11/2020] [Indexed: 12/20/2022]
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10
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Zeng C, Zhao H, Wan Z, Xiao Q, Xia H, Guo S. Highly biodegradable, thermostable eutectogels prepared by gelation of natural deep eutectic solvents using xanthan gum: preparation and characterization. RSC Adv 2020; 10:28376-28382. [PMID: 35519143 PMCID: PMC9055700 DOI: 10.1039/d0ra03390a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/13/2020] [Indexed: 01/02/2023] Open
Abstract
Highly biodegradable, thermostable eutectogels prepared by gelation of natural deep eutectic solvents using xanthan gum are expected to be widely used in the fields of food, medicine and materials.
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Affiliation(s)
- Chaoxi Zeng
- Department of Food Science and Technology
- College of Food Science and Technology
- Hunan Agricultural University
- Changsha
- China
| | - Haiyang Zhao
- Department of Food Science and Technology
- College of Food Science and Technology
- Hunan Agricultural University
- Changsha
- China
| | - Zheng Wan
- Department of Food Science and Technology
- College of Food Science and Technology
- Hunan Agricultural University
- Changsha
- China
| | - Qian Xiao
- Department of Food Science and Technology
- College of Food Science and Technology
- Hunan Agricultural University
- Changsha
- China
| | - Huiping Xia
- Department of Food Science and Technology
- College of Food Science and Technology
- Hunan Agricultural University
- Changsha
- China
| | - Shiyin Guo
- Department of Food Science and Technology
- College of Food Science and Technology
- Hunan Agricultural University
- Changsha
- China
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11
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Patel J, Maji B, Moorthy NSHN, Maiti S. Xanthan gum derivatives: review of synthesis, properties and diverse applications. RSC Adv 2020; 10:27103-27136. [PMID: 35515783 PMCID: PMC9055500 DOI: 10.1039/d0ra04366d] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 07/13/2020] [Indexed: 12/20/2022] Open
Abstract
Natural polysaccharides are well known for their biocompatibility, non-toxicity and biodegradability. These properties are also inherent to xanthan gum (XG), a microbial polysaccharide. This biomaterial has been extensively investigated as matrices for tablets, nanoparticles, microparticles, hydrogels, buccal/transdermal patches, tissue engineering scaffolds with different degrees of success. However, the native XG has its own limitations with regards to its susceptibility to microbial contamination, unusable viscosity, poor thermal and mechanical stability, and inadequate water solubility. Chemical modification can circumvent these limitations and tailor the properties of virgin XG to fulfill the unmet needs of drug delivery, tissue engineering, oil drilling and other applications. This review illustrates the process of chemical modification and/crosslinking of XG via etherification, esterification, acetalation, amidation, and oxidation. This review further describes the tailor-made properties of novel XG derivatives and their potential application in diverse fields. The physicomechanical modification and its impact on the properties of XG are also discussed. Overall, the recent developments on XG derivatives are very promising to progress further with polysaccharide research. Due to presence of hydroxy and carboxy functional groups, xanthan gum is amenable to various chemical modification for producing derivatives such as carboxymethyl xanthan and carboxymethyl hydroxypropyl xanthan with desirable properties for end use.![]()
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Affiliation(s)
- Jwala Patel
- Department of Pharmacy
- Indira Gandhi National Tribal University
- Amarkantak
- India
| | - Biswajit Maji
- Department of Chemistry
- Indira Gandhi National Tribal University
- Amarkantak
- India
| | | | - Sabyasachi Maiti
- Department of Pharmacy
- Indira Gandhi National Tribal University
- Amarkantak
- India
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12
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Bilanovic D, Iliassafov L, Kurzbaum E, Armon R. Preparing Xanthan‐Chitosan Composites in Glycerol. ChemistrySelect 2019. [DOI: 10.1002/slct.201803368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Dragoljub Bilanovic
- Center for EnvironmentalEconomicsEarth and Space StudiesBemidji State University, Bemidji, MN 56601 USA
| | - Lubov Iliassafov
- Faculty of Civil and Environmental Engineering Technion - Israel Institute of Technology Haifa 32000 Israel
| | - Eyal Kurzbaum
- Shamir Research InstituteUniversity of Haifa, P.O. Box 97 Qatzrin 12900 Israel
| | - Robert Armon
- Faculty of Civil and Environmental Engineering Technion - Israel Institute of Technology Haifa 32000 Israel
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13
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Pawlicka A, Tavares F, Dörr D, Cholant C, Ely F, Santos M, Avellaneda C. Dielectric behavior and FTIR studies of xanthan gum-based solid polymer electrolytes. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.03.055] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Barros NR, Santos RS, Miranda MCR, Bolognesi LFC, Borges FA, Schiavon JV, Marques RFC, Herculano RD, Norberto AMQ. Natural latex‐glycerol dressing to reduce nipple pain and healing the skin in breastfeeding women. Skin Res Technol 2019; 25:461-468. [DOI: 10.1111/srt.12674] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 12/09/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Natan Roberto Barros
- Institute of ChemistrySão Paulo State University (Unesp) Araraquara Brazil
- School of Pharmaceutical SciencesSão Paulo State University (Unesp) Araraquara Brazil
| | | | - Matheus Carlos Romeiro Miranda
- Institute of ChemistrySão Paulo State University (Unesp) Araraquara Brazil
- School of Pharmaceutical SciencesSão Paulo State University (Unesp) Araraquara Brazil
| | | | - Felipe Azevedo Borges
- Institute of ChemistrySão Paulo State University (Unesp) Araraquara Brazil
- School of Pharmaceutical SciencesSão Paulo State University (Unesp) Araraquara Brazil
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15
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Valenta T, Lapčíková B, Lapčík L. Determination of kinetic and thermodynamic parameters of food hydrocolloids/water interactions by means of thermal analysis and viscometry. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.07.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Goudoulas TB, Pan S, Germann N. Double-stranded and single-stranded well-entangled DNA solutions under LAOS: A comprehensive study. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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Noorlaila A, Hasanah HN, Yusoff A, Sarijo SH, Asmeda R. Effects of xanthan gum and HPMC on physicochemical and microstructure properties of sponge cakes during storage. Journal of Food Science and Technology 2017; 54:3532-3542. [PMID: 29051648 DOI: 10.1007/s13197-017-2810-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/10/2017] [Accepted: 08/15/2017] [Indexed: 11/27/2022]
Abstract
The effects of xanthan gum (XG) and hydroxypropyl methylcellulose (HPMC) in sponge cakes were studied. Hydrocolloids enhanced the thickening effect in batter that affected the textural attributes of sponge cakes. During storage, the structural changes in XG-cake resulted in higher hardness compared to HPMC-cake. Similar to XG, HPMC also contributed moistness to cake. The moisture loss of cake containing XG was slower than HPMC-cake. FTIR study showed absorption of OH at region of 3600-2900 cm-1 that explained the strong interaction of water in cake containing XG compared to other cake formulations.
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Affiliation(s)
- A Noorlaila
- Faculty of Applied Science, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia
| | - H Nor Hasanah
- Faculty of Applied Science, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia
| | - A Yusoff
- Faculty of Applied Science, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia
| | - S H Sarijo
- Faculty of Applied Science, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia
| | - R Asmeda
- Faculty of Applied Science, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia
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18
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Taylor MJ, Tomlins P, Sahota TS. Thermoresponsive Gels. Gels 2017; 3:E4. [PMID: 30920501 PMCID: PMC6318636 DOI: 10.3390/gels3010004] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/14/2016] [Accepted: 12/16/2016] [Indexed: 01/08/2023] Open
Abstract
Thermoresponsive gelling materials constructed from natural and synthetic polymers can be used to provide triggered action and therefore customised products such as drug delivery and regenerative medicine types as well as for other industries. Some materials give Arrhenius-type viscosity changes based on coil to globule transitions. Others produce more counterintuitive responses to temperature change because of agglomeration induced by enthalpic or entropic drivers. Extensive covalent crosslinking superimposes complexity of response and the upper and lower critical solution temperatures can translate to critical volume temperatures for these swellable but insoluble gels. Their structure and volume response confer advantages for actuation though they lack robustness. Dynamic covalent bonding has created an intermediate category where shape moulding and self-healing variants are useful for several platforms. Developing synthesis methodology-for example, Reversible Addition Fragmentation chain Transfer (RAFT) and Atomic Transfer Radical Polymerisation (ATRP)-provides an almost infinite range of materials that can be used for many of these gelling systems. For those that self-assemble into micelle systems that can gel, the upper and lower critical solution temperatures (UCST and LCST) are analogous to those for simpler dispersible polymers. However, the tuned hydrophobic-hydrophilic balance plus the introduction of additional pH-sensitivity and, for instance, thermochromic response, open the potential for coupled mechanisms to create complex drug targeting effects at the cellular level.
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Affiliation(s)
- M Joan Taylor
- INsmart group, School of Pharmacy Faculty of Health & Life Sciences, De Montfort University, Leicester, LE1 9BH, UK.
| | - Paul Tomlins
- INsmart group, School of Pharmacy Faculty of Health & Life Sciences, De Montfort University, Leicester, LE1 9BH, UK.
| | - Tarsem S Sahota
- INsmart group, School of Pharmacy Faculty of Health & Life Sciences, De Montfort University, Leicester, LE1 9BH, UK.
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19
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Bilanovic D, Starosvetsky J, Armon RH. Preparation of biodegradable xanthan-glycerol hydrogel, foam, film, aerogel and xerogel at room temperature. Carbohydr Polym 2016; 148:243-50. [PMID: 27185137 DOI: 10.1016/j.carbpol.2016.04.058] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 04/08/2016] [Accepted: 04/12/2016] [Indexed: 10/22/2022]
Abstract
Polymers, hence hydrogels, pollute waters and soils accelerating environmental degradation. Environmentally benign hydrogels were made in water from biodegradable xanthan (X) and glycerol (G) at 22.5±2.5°C. Molar ratio [G]/[X]<3.0 was used to maximize crosslinking by mono-glycerol instead by poly-glycerol. XG-hydrogels were transformed into: XG-foams, XG-films, and XG-aerogel. Anionic character of XG-materials changes with changing [G]/[X] ratio. XG-films made from XG-hydrogels absorb up to 40 times more water than XG-films made from XG-foams. The films made from XG-foams and HCl do not dissolve in water during 48h. Making XG-materials is a no-waste process which decreases pollution, eliminates waste disposal costs, and minimizes energy expenses. XG-materials are suitable for both industrial and environmental applications including slow release and concentration of cations. XG-materials, made of xanthan, microbial polysaccharide, could also be used in applications targeting populations that do not consume meat or meat based products.
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Affiliation(s)
- Dragoljub Bilanovic
- Center for Environmental, Earth, and Space Studies, Bemidji State University, Bemidji, MN 56601, USA.
| | - Jeanna Starosvetsky
- Faculty of Civil and Environmental Engineering; Department of Water and Agricultural Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.
| | - Robert H Armon
- Faculty of Civil and Environmental Engineering; Department of Water and Agricultural Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.
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20
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Petri DFS. Xanthan gum: A versatile biopolymer for biomedical and technological applications. J Appl Polym Sci 2015. [DOI: 10.1002/app.42035] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Denise F. S. Petri
- Departamento de Química Fundamental; Instituto de Química, Universidade de São Paulo; São Paulo 05513-970 Brazil
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21
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Abstract
High surface area and low thermal conductivity were observed for polysaccharide aerogels prepared by ethanol induced gelation.
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Affiliation(s)
- Gabrijela Tkalec
- University of Maribor
- Faculty of Chemistry and Chemical Engineering
- Maribor
- Slovenia
| | - Željko Knez
- University of Maribor
- Faculty of Chemistry and Chemical Engineering
- Maribor
- Slovenia
| | - Zoran Novak
- University of Maribor
- Faculty of Chemistry and Chemical Engineering
- Maribor
- Slovenia
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