1
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Lettieri R, Fazio V, Abruzzese D, Di Bartolomeo E, D'Ottavi C, Micheletti A, Tiero A, Duranti L, Armuzza V, Licoccia S, Gatto E. Influence of natural additives on the properties of a milk-based compostable bioplastic. RSC Adv 2024; 14:19041-19053. [PMID: 38895523 PMCID: PMC11184369 DOI: 10.1039/d4ra02291b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
The ongoing revolution in the plastic sector is the use of renewable and compostable materials obtained from biomass. However, their mechanical strength and thermal stability are generally not sufficient for practical applications. This study investigates the influence of natural additives on the physical-mechanical properties of a new biobased compostable bioplastic, SP-Milk®, produced from milk scraps. To provide this matrix the appropriate mechanical and thermal properties for daily use while leaving its compostability unchanged, the effect of incorporating vegetal fibres and organic particulates into the bulk bioplastic was investigated. Mechanical tests showed that fibres with a length of 2 mm are capable of increasing ductility by up to 97% compared with the original matrix, whereas fibres with a length of 10 mm led to a more effective reinforcement due to the residual resistance effect, increasing the final compressive strain from 20% (original matrix) to 70.9%. The addition of particulate yielded a harder and more resistant material, and the elastic modulus increased by 21%, although with loss of ductility, compared to SP-Milk® alone. The combination of fibres and particles resulted in the preservation of the positive effects of both components, showing a higher elastic modulus (240 ± 20 MPa, compared to 199 ± 12 MPa for the matrix), higher ductility (+50%) and higher strain at failure (+30%), compared with the matrix. Excellent compatibility between the polymeric matrix and both the fibres and the granules was confirmed using scanning electron microscopy. The thermal analysis demonstrated improved thermal stability particularly because of the effect of the combination of granules and fibres. The results validate that natural reinforcement agents are effective and ecologically advantageous.
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Affiliation(s)
- Raffaella Lettieri
- University of Rome Tor Vergata Department of Chemical Science and Technologies Via Della Ricerca Scientifica 00133 Rome Italy
- Splastica Srl Via Del Lavoro 13, 00045 Genzano di Roma Rome Italy
| | - Veronica Fazio
- University of Rome Tor Vergata Department of Chemical Science and Technologies Via Della Ricerca Scientifica 00133 Rome Italy
| | - Donato Abruzzese
- University of Rome Tor Vergata Department of Civil and Computer Science Engineering Via Del Politecnico, 1 00133 Rome Italy
| | - Elisabetta Di Bartolomeo
- University of Rome Tor Vergata Department of Chemical Science and Technologies Via Della Ricerca Scientifica 00133 Rome Italy
| | - Cadia D'Ottavi
- University of Rome Tor Vergata Department of Chemical Science and Technologies Via Della Ricerca Scientifica 00133 Rome Italy
| | - Andrea Micheletti
- University of Rome Tor Vergata Department of Civil and Computer Science Engineering Via Del Politecnico, 1 00133 Rome Italy
| | - Alessandro Tiero
- University of Rome Tor Vergata Department of Civil and Computer Science Engineering Via Del Politecnico, 1 00133 Rome Italy
| | - Leonardo Duranti
- University of Rome Tor Vergata Department of Chemical Science and Technologies Via Della Ricerca Scientifica 00133 Rome Italy
| | | | - Silvia Licoccia
- University of Rome Tor Vergata Department of Chemical Science and Technologies Via Della Ricerca Scientifica 00133 Rome Italy
- NAST Centre for Nanoscience, Nanotechnology and Instrumentation, University of Rome Tor Vergata, Physics Department Via Della Ricerca Scientifica 00133 Rome Italy
| | - Emanuela Gatto
- University of Rome Tor Vergata Department of Chemical Science and Technologies Via Della Ricerca Scientifica 00133 Rome Italy
- Splastica Srl Via Del Lavoro 13, 00045 Genzano di Roma Rome Italy
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2
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Research Progress in Hemicellulose-Based Nanocomposite Film as Food Packaging. Polymers (Basel) 2023; 15:polym15040979. [PMID: 36850261 PMCID: PMC9964622 DOI: 10.3390/polym15040979] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/12/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
As the main component of agricultural and forestry biomass, hemicellulose has the advantages of having an abundant source, biodegradability, nontoxicity and good biocompatibility. Its application in food packaging has thus become the focus of efficient utilization of biomass resources. However, due to its special molecular structure and physical and chemical characteristics, the mechanical properties and barrier properties of hemicellulose films are not sufficient, and modification for performance enhancement is still a challenge. In the field of food packaging materials preparation, modification of hemicellulose through blending with nanofibers or nanoparticles, both inorganic and organic, has attracted research attention because this approach offers the advantages of efficient improvement in the expected properties and better cost efficiency. In this paper, the composition of hemicellulose, the classification of nanofillers and the research status of hemicellulose-based nanocomposite films are reviewed. The research progress in modification of hemicellulose by using layered silicate, inorganic nanoparticles and organic nanoparticles in food packaging is described. Challenges and outlook of research in hemicellulose-based nanocomposite film in food packaging is discussed.
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3
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Xylan-starch-based bioplastic formulation and xylan influence on the physicochemical and biodegradability properties. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04385-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Chibrikov V, Pieczywek PM, Zdunek A. Tailor-Made Biosystems - Bacterial Cellulose-Based Films with Plant Cell Wall Polysaccharides. POLYM REV 2022. [DOI: 10.1080/15583724.2022.2067869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Vadym Chibrikov
- Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
| | | | - Artur Zdunek
- Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
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5
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Clean Manufacturing of Cellulose Nanopapers by Incorporating Lignin and Xylan as Sustainable Additives. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2022. [DOI: 10.1016/j.carpta.2022.100207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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6
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Beluns S, Platnieks O, Gaidukovs S, Starkova O, Sabalina A, Grase L, Thakur VK, Gaidukova G. Lignin and Xylan as Interface Engineering Additives for Improved Environmental Durability of Sustainable Cellulose Nanopapers. Int J Mol Sci 2021; 22:12939. [PMID: 34884744 PMCID: PMC8657447 DOI: 10.3390/ijms222312939] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 11/16/2022] Open
Abstract
Cellulose materials and products are frequently affected by environmental factors such as light, temperature, and humidity. Simulated UV irradiation, heat, and moisture exposure were comprehensively used to characterize changes in cellulose nanopaper (NP) tensile properties. For the preparation of NP, high-purity cellulose from old, unused filter paper waste was used. Lignin and xylan were used as sustainable green interface engineering modifiers for NP due to their structural compatibility, low price, nontoxic nature, and abundance as a by-product of biomass processing, as well as their ability to protect cellulose fibers from UV irradiation. Nanofibrillated cellulose (NFC) suspension was obtained by microfluidizing cellulose suspension, and NP was produced by casting films from water suspensions. The use of filler from 1 to 30 wt% significantly altered NP properties. All nanopapers were tested for their sensitivity to water humidity, which reduced mechanical properties from 10 to 40% depending on the saturation level. Xylan addition showed a significant increase in the specific elastic modulus and specific strength by 1.4- and 2.8-fold, respectively. Xylan-containing NPs had remarkable resistance to UV irradiation, retaining 50 to 90% of their initial properties. Lignin-modified NPs resulted in a decreased mechanical performance due to the particle structure of the filler and the agglomeration process, but it was compensated by good property retention and enhanced elongation. The UV oxidation process of the NP interface was studied with UV-Vis and FTIR spectroscopy, which showed that the degradation of lignin and xylan preserves a cellulose fiber structure. Scanning electron microscopy images revealed the structural formation of the interface and supplemented understanding of UV aging impact on the surface and penetration depth in the cross-section. The ability to overcome premature aging in environmental factors can significantly benefit the wide adaption of NP in food packaging and functional applications.
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Affiliation(s)
- Sergejs Beluns
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P. Valdena 3/7, LV-1048 Riga, Latvia; (O.P.); (V.K.T.)
| | - Oskars Platnieks
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P. Valdena 3/7, LV-1048 Riga, Latvia; (O.P.); (V.K.T.)
| | - Sergejs Gaidukovs
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P. Valdena 3/7, LV-1048 Riga, Latvia; (O.P.); (V.K.T.)
| | - Olesja Starkova
- Institute for Mechanics of Materials, University of Latvia, Jelgavas 3, LV-1004 Riga, Latvia; (O.S.); (A.S.)
| | - Alisa Sabalina
- Institute for Mechanics of Materials, University of Latvia, Jelgavas 3, LV-1004 Riga, Latvia; (O.S.); (A.S.)
| | - Liga Grase
- Faculty of Materials Science and Applied Chemistry, Institute of Materials and Surface Engineering, Riga Technical University, P. Valdena 3, LV-1048 Riga, Latvia;
| | - Vijay Kumar Thakur
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P. Valdena 3/7, LV-1048 Riga, Latvia; (O.P.); (V.K.T.)
- Biorefining and Advanced Materials Research Center, SRUC, Edinburgh EH9 3JG, UK
- Department of Mechanical Engineering, School of Engineering, Shiv Nadar University, Greater Noida 201314, Uttar Pradesh, India
- School of Engineering, University of Petroleum & Energy Studies, Dehradun 248007, Uttarakhand, India
| | - Gerda Gaidukova
- Faculty of Materials Science and Applied Chemistry, Institute of Applied Chemistry, Riga Technical University, P. Valdena 3/7, LV-1048 Riga, Latvia;
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7
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Development and characterization of whey protein isolate and xylan composite films with and without enzymatic crosslinking. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106847] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Rao J, Lv Z, Chen G, Hao X, Guan Y, Peng P, Su Z, Peng F. Constructing a Novel Xylan-Based Film with Flexibility, Transparency, and High Strength. Biomacromolecules 2021; 22:3810-3818. [PMID: 34347473 DOI: 10.1021/acs.biomac.1c00657] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Xylan-based films have great potential to replace petroleum-based polymers used for packaging and coatings due to their excellent biocompatibility, biodegradability, and good gas barrier properties. However, fabricating a xylan-based film with flexible, transparent, water-proof, and excellent mechanical properties is an enormous challenge. Herein, we manufactured a series of degradable films with adjustable properties via solution-casting using a water-soluble xylan derivative. This is the first report of a pure xylan-based film with high performance, requiring no additives. The tensile strength of the xylan-based film could be controlled by adjusting the aldehyde content, which varied from 105.0 to 132.6 MPa. The smallest initial water contact angle of the xylan-based films is 93.26°, indicating that these films are hydrophobic. This work shows a simple and viable route toward manufacturing xylan-based films with high tensile strength, flexibility, and transparency, which can be used for packaging materials and coatings.
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Affiliation(s)
- Jun Rao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Ziwen Lv
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Gegu Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Xiang Hao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Ying Guan
- Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
| | - Pai Peng
- College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Zhenhua Su
- China National Pulp and Paper Research Institute, Beijing 100102, China
| | - Feng Peng
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
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9
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Abuhay A, Mengie W, Tesfaye T, Gebino G, Ayele M, Haile A, Yillie D. Opportunities for New Biorefinery Products from Ethiopian Ginning Industry By-products: Current Status and Prospects. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2021. [DOI: 10.1016/j.jobab.2021.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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10
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Abe MM, Martins JR, Sanvezzo PB, Macedo JV, Branciforti MC, Halley P, Botaro VR, Brienzo M. Advantages and Disadvantages of Bioplastics Production from Starch and Lignocellulosic Components. Polymers (Basel) 2021; 13:2484. [PMID: 34372086 PMCID: PMC8348970 DOI: 10.3390/polym13152484] [Citation(s) in RCA: 43] [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: 05/27/2021] [Revised: 06/25/2021] [Accepted: 07/09/2021] [Indexed: 01/24/2023] Open
Abstract
The accumulation of plastic wastes in different environments has become a topic of major concern over the past decades; therefore, technologies and strategies aimed at mitigating the environmental impacts of petroleum products have gained worldwide relevance. In this scenario, the production of bioplastics mainly from polysaccharides such as starch is a growing strategy and a field of intense research. The use of plasticizers, the preparation of blends, and the reinforcement of bioplastics with lignocellulosic components have shown promising and environmentally safe alternatives for overcoming the limitations of bioplastics, mainly due to the availability, biodegradability, and biocompatibility of such resources. This review addresses the production of bioplastics composed of polysaccharides from plant biomass and its advantages and disadvantages.
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Affiliation(s)
- Mateus Manabu Abe
- Institute for Research in Bioenergy (IPBEN), São Paulo State University (UNESP), Rio Claro 13500-230, SP, Brazil; (M.M.A.); (J.R.M.); (J.V.M.)
| | - Júlia Ribeiro Martins
- Institute for Research in Bioenergy (IPBEN), São Paulo State University (UNESP), Rio Claro 13500-230, SP, Brazil; (M.M.A.); (J.R.M.); (J.V.M.)
| | - Paula Bertolino Sanvezzo
- Department of Materials Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil; (P.B.S.); (M.C.B.)
| | - João Vitor Macedo
- Institute for Research in Bioenergy (IPBEN), São Paulo State University (UNESP), Rio Claro 13500-230, SP, Brazil; (M.M.A.); (J.R.M.); (J.V.M.)
| | - Marcia Cristina Branciforti
- Department of Materials Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil; (P.B.S.); (M.C.B.)
| | - Peter Halley
- School of Chemical Engineering, The University of Queensland, Level 3, Don Nicklin Building (74), St Lucia, QLD 4072, Australia;
| | - Vagner Roberto Botaro
- Science and Technology Center for Sustainability—CCTS, Federal University of São Carlos, Rodovia João Leme dos Santos, Km 110, Sorocaba 18052-780, SP, Brazil;
| | - Michel Brienzo
- Institute for Research in Bioenergy (IPBEN), São Paulo State University (UNESP), Rio Claro 13500-230, SP, Brazil; (M.M.A.); (J.R.M.); (J.V.M.)
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11
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Naidu DS, John MJ. Cellulose nanofibrils reinforced xylan-alginate composites: Mechanical, thermal and barrier properties. Int J Biol Macromol 2021; 179:448-456. [PMID: 33711367 DOI: 10.1016/j.ijbiomac.2021.03.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/04/2021] [Accepted: 03/04/2021] [Indexed: 02/03/2023]
Abstract
Cellulose nanofibrils (CNFs) can be used as an effective reinforcement material for biopolymer films intended for food packaging applications. The aim of this study was to improve the mechanical and barrier properties of xylan-alginate films by incorporating CNFs into the xylan-alginate matrix. CNFs was produced from maize stalk waste residues through a combination of chemical and mechanical treatment. The CNFs was incorporated into the xylan-alginate matrix between 1 and 10 wt%. The suitability of the CNFs reinforced composite films for food packaging applications was investigated by testing the mechanical, thermal and optical properties as well as the moisture sorption, solubility and water vapour permeability of the films. The CNFs produced had fibre diameters between 10 and 80 nm and transmission electron microscopy images showed that the CNFs were highly entangled hence forming a web like structure. It was found that the incorporation of CNFs into the xylan-alginate matrix increased the tensile strength and Young's modulus of the films. The incorporation of CNFs improved the WVP of the films but did not show any significant effect on the thermal properties of the films.
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Affiliation(s)
- Darrel Sarvesh Naidu
- Centre for Nanostructures and Advanced Materials, CSIR, South Africa; Department of Chemistry, Nelson Mandela University, Port Elizabeth, South Africa
| | - Maya Jacob John
- Centre for Nanostructures and Advanced Materials, CSIR, South Africa; Department of Chemistry, Nelson Mandela University, Port Elizabeth, South Africa.
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12
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Li J, Lu Z, Chen Z, Li C, Du Y, Chen C, Wang L, Yu P. Preparation and characterization of pH-responsive microgel using arabinoxylan from wheat bran for BSA delivery. Food Chem 2020; 342:128220. [PMID: 33223291 DOI: 10.1016/j.foodchem.2020.128220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/01/2020] [Accepted: 09/23/2020] [Indexed: 10/23/2022]
Abstract
Wheat bran arabinoxylan (AX) discard from wheat production was utilized to form pH-responsive microgels. AX was modified by carboxymethylation, and the carboxymethylated arabinoxylans (CMAX) were characterized by FT-IR, NMR, gel permeation chromatography (GPC), and rheological analysis. The CMAX microgel was cross-linked by Fe3+ using an inverse emulsification polymerization. The morphology, particle size, pH sensitivity, and mechanism of cross-linking between COO- and Fe3+ of the CMAX microgel was investigated. The CMAX microgel was used to be an oral protein drug carrier. The CMAX microgel particles exhibited a stable spherical structure. FT-IR spectral analysis of the CMAX microgel indicated that the microgel was crosslinked by bridging Fe3+ and COO- with unidentate binding. The CMAX microgel exhibited good pH sensitivity and high stability in acid condition. Additionally, BSA was used as the embedding protein, and the controlled release effect of CMAX microgel was explored in gastrointestinal tract simulation.
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Affiliation(s)
- Juan Li
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
| | - Zhenjie Lu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
| | - Zhengxing Chen
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China.
| | - Cheng Li
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
| | - Yan Du
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
| | - Chen Chen
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
| | - Li Wang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
| | - Peibin Yu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
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13
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Naidu DS, John MJ. Effect of Clay Nanofillers on the Mechanical and Water Vapor Permeability Properties of Xylan-Alginate Films. Polymers (Basel) 2020; 12:polym12102279. [PMID: 33020377 PMCID: PMC7601507 DOI: 10.3390/polym12102279] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/29/2020] [Accepted: 07/29/2020] [Indexed: 01/04/2023] Open
Abstract
In this study, xylan–alginate-based films were reinforced with nanoclays (bentonite or halloysite) by the solvent casting technique. The effect of the nanoclay loadings (1–5 wt %) on various properties—mechanical, optical, thermal, solubility, water sorption, and water vapor permeability (WVP)—of the xylan–alginate films were examined for their application as food packaging materials. A 5 wt % loading of either bentonite or halloysite resulted in a 49% decrease of the WVP due to the impermeable nature of the silicate layers that make up both bentonite and halloysite. Thermal stability and solubility of the nanocomposite films were not significantly influenced by the presence of the nanoclays, whereas the optical properties were significantly improved when compared to neat xylan–alginate blend. In general, films reinforced with bentonite exhibited superior mechanical and optical properties when compared to both halloysite-based nanocomposite and neat films.
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Affiliation(s)
- Darrel S. Naidu
- CSIR, Centre for Nanostructures and Advanced Materials, Pretoria 0184, South Africa;
- Department of Chemistry, Nelson Mandela University, Port Elizabeth 6031, South Africa
- Correspondence:
| | - Maya J. John
- CSIR, Centre for Nanostructures and Advanced Materials, Pretoria 0184, South Africa;
- Department of Chemistry, Nelson Mandela University, Port Elizabeth 6031, South Africa
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14
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Development of functional chitosan-based composite films incorporated with hemicelluloses: Effect on physicochemical properties. Carbohydr Polym 2020; 246:116489. [DOI: 10.1016/j.carbpol.2020.116489] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/14/2020] [Accepted: 05/18/2020] [Indexed: 11/20/2022]
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15
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Zhao Y, Sun H, Yang B, Weng Y. Hemicellulose-Based Film: Potential Green Films for Food Packaging. Polymers (Basel) 2020; 12:E1775. [PMID: 32784786 PMCID: PMC7465936 DOI: 10.3390/polym12081775] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 11/17/2022] Open
Abstract
Globally increasing environmental awareness and the possibility of increasing price and dwindling supply of traditional petroleum-based plastics have led to a breadth of research currently addressing environmentally friendly bioplastics as an alternative solution. In this context, hemicellulose, as the second richest polysaccharide, has attracted extensive attention due to its combination of such advantages as abundance, biodegradability, and renewability. Herein, in this review, the latest research progress in development of hemicellulose film with regard to application in the field of food packaging is presented with particular emphasis on various physical and chemical modification approaches aimed at performance improvement, primarily for enhancement of mechanical, barrier properties, and hydrophobicity that are essential to food packing materials. The development highlights of hemicellulose film substrate are outlined and research prospects in the field are described.
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Affiliation(s)
- Yuelong Zhao
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (Y.Z.); (B.Y.); (Y.W.)
| | - Hui Sun
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (Y.Z.); (B.Y.); (Y.W.)
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University, Beijing 100048, China
| | - Biao Yang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (Y.Z.); (B.Y.); (Y.W.)
| | - Yunxuan Weng
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (Y.Z.); (B.Y.); (Y.W.)
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University, Beijing 100048, China
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16
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Zhu R, Liu X, Li L, Wang Q, Zhao Q, Liu S, Feng W, Xu F, Zhang X. Valorization of industrial xylan-rich hemicelluloses into water-soluble derivatives by in-situ acetylation in EmimAc ionic liquid. Int J Biol Macromol 2020; 163:457-463. [PMID: 32634510 DOI: 10.1016/j.ijbiomac.2020.06.289] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/30/2020] [Accepted: 06/30/2020] [Indexed: 11/28/2022]
Abstract
In this study, aimed at valorization of industrial xylan-rich hemicelluloses (a by-product of dissolving pulp process), water-soluble hemicelluloses were fabricated with mild acetylation in 1-ethyl-3-methylimidazolium acetate ionic liquid (EmimAc) and dichloroacetyl chloride (Cl2AcCl) system by a facile and novel method. The structure of the acetylated hemicelluloses was characterized by FT-IR and NMR spectra. The resultant modified products could fully dissolve in water with the degree of substitution (DS) valued between 0.17 and 0.37. Structural characterization indicated that the modified hemicelluloses were chiefly composed of the (1 → 4)-linked β-D-Xylp backbone with hydroxyl or -COCH3 linked to O-2 and O-3 of the Xylp units. Moreover, the mild acetylation was achieved by one-pot method, in which the hemicelluloses reacted with mixed anhydride produced between EmimAc and Cl2AcCl rather than Cl2AcCl. Rheological behavior measurements revealed that acetylated hemicelluloses solutions showed shear-thinning behavior and indicated lower viscosity compared with those of the referenced hemicelluloses. The excellent water-solubility of industrial hemicelluloses would widen its application field and be easier for its conversion into desired chemicals.
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Affiliation(s)
- Ruonan Zhu
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Xin Liu
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Lijun Li
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Qi Wang
- Xinjiang Zhongtai Textile Group Co. Ltd., Korla Economic and Technological Development Zone, Xinjiang 841000, China
| | - Qiang Zhao
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Shijie Liu
- College of Environmental Science and Forestry, State University of New York, 1 Forestry Drive, Syracuse, NY 13210, USA
| | - Wenjun Feng
- Xinjiang Zhongtai Textile Group Co. Ltd., Korla Economic and Technological Development Zone, Xinjiang 841000, China
| | - Feng Xu
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Xueming Zhang
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China..
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Sharma K, Khaire KC, Thakur A, Moholkar VS, Goyal A. Acacia Xylan as a Substitute for Commercially Available Xylan and Its Application in the Production of Xylooligosaccharides. ACS OMEGA 2020; 5:13729-13738. [PMID: 32566838 PMCID: PMC7301597 DOI: 10.1021/acsomega.0c00896] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 05/19/2020] [Indexed: 05/08/2023]
Abstract
Over the past two decades, birchwood and beechwood xylans have been used as a popular substrate for the characterization of xylanases. Recently, major companies have discontinued their commercial production. Therefore, there is a need to find an alternative to these substrates. Xylan extraction from Acacia sawdust resulted in 23.5% (w/w) yield. The extracted xylan is composed of xylose and glucuronic acid residues in a molar ratio of 6:1 with a molecular mass of ∼70 kDa. The specific optical rotation analysis of extracted xylan displayed that it is composed of the d-form of xylose and glucuronic acid monomeric sugars. The nuclear magnetic resonance analysis of extracted xylan revealed that the xylan backbone is substituted with 4-O-methyl glucuronic acid at the O2 position. Fourier transform infrared analysis confirmed the absence of lignin contamination in the extracted xylan. Xylanase from Clostridium thermocellum displayed the enzyme activity of 1761 U/mg against extracted xylan, and the corresponding activity against beechwood xylan was 1556 U/mg, which confirmed that the extracted xylan could be used as an alternative substrate for the characterization of xylanases.
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Affiliation(s)
- Kedar Sharma
- Carbohydrate
Enzyme Biotechnology Laboratory, Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Kaustubh Chandrakant Khaire
- Carbohydrate
Enzyme Biotechnology Laboratory, Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Abhijeet Thakur
- Carbohydrate
Enzyme Biotechnology Laboratory, Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Vijayanand Suryakant Moholkar
- Carbohydrate
Enzyme Biotechnology Laboratory, Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Arun Goyal
- Carbohydrate
Enzyme Biotechnology Laboratory, Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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18
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Cartaxo da Costa Urtiga S, Rodrigues Marcelino H, Sócrates Tabosa do Egito E, Eleamen Oliveira E. Xylan in drug delivery: A review of its engineered structures and biomedical applications. Eur J Pharm Biopharm 2020; 151:199-208. [DOI: 10.1016/j.ejpb.2020.04.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 04/17/2020] [Accepted: 04/22/2020] [Indexed: 12/15/2022]
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19
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Luo J, Huang K, Zhou X, Xu Y. Hybrid films based on holistic celery nanocellulose and lignin/hemicellulose with enhanced mechanical properties and dye removal. Int J Biol Macromol 2020; 147:699-705. [DOI: 10.1016/j.ijbiomac.2020.01.102] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 11/15/2022]
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da Silva Braga R, Poletto M. Preparation and Characterization of Hemicellulose Films from Sugarcane Bagasse. MATERIALS 2020; 13:ma13040941. [PMID: 32093209 PMCID: PMC7079596 DOI: 10.3390/ma13040941] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/04/2020] [Accepted: 02/18/2020] [Indexed: 11/25/2022]
Abstract
Hemicellulose is one of the most common polysaccharides found in nature. Its use as a green and sustainable raw material for industries is desirable. In this work, an alkaline-alcoholic method was used to extract hemicelluloses from sugarcane bagasse. After extraction, films with 2%, 3% and 4% (w/v) hemicellulose were produced. The films’ morphology, thickness, water solubility, tensile properties and thermal stability were evaluated. The Fourier Transform Infrared Spectroscopy (FTIR) results reveal that the method used removes the hemicellulose from bagasse with a low concentration of lignin. The films presented a compact and dense structure with uniformity in thickness associated with higher solubility in water. The increase in hemicellulose content increased tensile strength, but reduced the tensile strain of the films. Thermogravimetric analysis indicated that the increase in hemicellulose content reduced the films’ thermal stability. Thus, these films may act as useful, biodegradable and environmentally friendly materials for engineering applications.
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Affiliation(s)
- Roberta da Silva Braga
- Chemical Engineering, University of Caxias do Sul (UCS), Caxias do Sul 95070-560, Brazil;
| | - Matheus Poletto
- Postgraduate Program in Engineering of Processes and Technologies (PGEPROTEC), University of Caxias do Sul (UCS), Caxias do Sul 95070-560, Brazil
- Correspondence:
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21
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Zhang X, Xiao N, Chen M, Wei Y, Liu C. Functional packaging films originating from hemicelluloses laurate by direct transesterification in ionic liquid. Carbohydr Polym 2020; 229:115336. [DOI: 10.1016/j.carbpol.2019.115336] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 09/05/2019] [Accepted: 09/14/2019] [Indexed: 01/15/2023]
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22
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Purification of hemicellulose from sugarcane bagasse alkaline hydrolysate using an aromatic-selective adsorption resin. Carbohydr Polym 2019; 225:115216. [DOI: 10.1016/j.carbpol.2019.115216] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/15/2019] [Accepted: 08/19/2019] [Indexed: 10/26/2022]
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23
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Characterization of Edible Films Based on Alginate or Whey Protein Incorporated with Bifidobacterium animalis subsp. lactis BB-12 and Prebiotics. COATINGS 2019. [DOI: 10.3390/coatings9080493] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Recently, edible films were shown to be an effective strategy for the delivery of functional ingredients, such as probiotics and prebiotics. With that in mind, two soluble fibres (inulin and fructooligosaccharides) were selected as prebiotic elements, in whey protein isolate (WPI) and alginate (ALG) matrices plasticized with glycerol and used for the incorporation of Bifidobacterium animalis subsp. lactis BB-12. The results obtained showed that the viability of the B. animalis subsp. lactis BB-12 probiotic strain was maintained within the minimum threshold (106 CFU/g) necessary to act as a probiotic throughout 60 days of storage at 23 °C. The incorporation of prebiotic compounds improved B. animalis subsp. lactis BB-12 viability, with inulin showing the best performance, as it maintained the viability at 7.34 log CFU/g. The compositional characteristics (biopolymer type and prebiotics addition) of the film forming solutions had no significant impact upon the viability of the probiotic strain. The incorporation of probiotics and prebiotics did not modify the infrared spectra, revealing that the molecular structure of the films was not modified. The moisture content and water solubility decreased positively in WPI- and ALG-based films with the addition of prebiotics compounds. Overall, the results obtained in this work support the use of WPI films containing inulin as a good strategy to immobilize B. animalis subsp. lactis BB-12, with potential applications in the development of functional foods.
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Jin X, Hu Z, Wu S, Song T, Yue F, Xiang Z. Promoting the material properties of xylan-type hemicelluloses from the extraction step. Carbohydr Polym 2019; 215:235-245. [DOI: 10.1016/j.carbpol.2019.03.092] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/20/2019] [Accepted: 03/25/2019] [Indexed: 01/27/2023]
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25
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Effects of nano-ZnO and nano-SiO2 particles on properties of PVA/xylan composite films. Int J Biol Macromol 2019; 132:978-986. [DOI: 10.1016/j.ijbiomac.2019.03.088] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 03/12/2019] [Accepted: 03/13/2019] [Indexed: 01/19/2023]
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26
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Rao J, Gao H, Guan Y, Li WQ, Liu Q. Fabrication of hemicelluloses films with enhanced mechanical properties by graphene oxide for humidity sensing. Carbohydr Polym 2019; 208:513-520. [DOI: 10.1016/j.carbpol.2018.12.099] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/30/2018] [Accepted: 12/31/2018] [Indexed: 10/27/2022]
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27
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Eucalyptus xylan: An in-house-produced substrate for xylanase evaluation to substitute birchwood xylan. Carbohydr Polym 2018; 197:167-173. [DOI: 10.1016/j.carbpol.2018.05.088] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/25/2018] [Accepted: 05/30/2018] [Indexed: 12/31/2022]
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Ma J, Li D, Zhong L, Du F, Tan J, Yang J, Peng X. Synthesis and characterization of biofunctional quaternized xylan-Fe2O3 core/shell nanocomposites and modification with polylysine and folic acid. Carbohydr Polym 2018; 199:382-389. [PMID: 30143142 DOI: 10.1016/j.carbpol.2018.07.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 06/30/2018] [Accepted: 07/02/2018] [Indexed: 02/07/2023]
Abstract
The aims of this study are to prepare quaternized xylan-Fe2O3 (QX-Fe2O3) core/shell nanocomposites and explore their potential application in the biomedical fields. γ-Fe2O3 nanoparticles synthesized by a facile solvothermal process are coated with QX via reverse microemulsion method and further modified by polylysine (PLL) and folic acid (FA) to prepare PLL-QX-Fe2O3 and FA-QX-Fe2O3 nanoparticles. An obvious strong absorption of γ-Fe2O3 at 580 cm-1 in the spectra of QX-Fe2O3 is observed, the Fe element content of QX-Fe2O3 is 30-75 μg/mL and the saturation magnetization of QX-Fe2O3 nanoparticles is 1.49 emu/g. The γ-Fe2O3 and QX-Fe2O3 nanoparticles are of regular sphericity with diameter of 50-100 nm and 60-150 nm, respectively. The highest zeta potential of QX-Fe2O3 nanoparticles is -41 mV, and the PLL-QX-Fe2O3 nanoparticles have a positive potential with a maximum value of 45.2 mV. In addition, FA-QX-Fe2O3 showed excellent performance in T2-weighted Magnetic Resonance (MR) imaging with an r2 value of 190 mM-1S-1. Each nanocomposite has its own inherent properties, which contributes to its versatile utilization and application potential.
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Affiliation(s)
- Jiliang Ma
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510641 PR China
| | - Dan Li
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, 519000 PR China
| | - Linxin Zhong
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510641 PR China.
| | - Fan Du
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510641 PR China
| | - Jiewen Tan
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510641 PR China
| | - Jie Yang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510641 PR China
| | - Xinwen Peng
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510641 PR China.
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Zhang X, Liu C, Zhang A, Sun R. Synergistic effects of graft polymerization and polymer blending on the flexibility of xylan-based films. Carbohydr Polym 2018; 181:1128-1135. [DOI: 10.1016/j.carbpol.2017.11.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 11/06/2017] [Accepted: 11/06/2017] [Indexed: 02/06/2023]
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30
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Naidu DS, Hlangothi SP, John MJ. Bio-based products from xylan: A review. Carbohydr Polym 2018; 179:28-41. [DOI: 10.1016/j.carbpol.2017.09.064] [Citation(s) in RCA: 178] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 09/08/2017] [Accepted: 09/20/2017] [Indexed: 01/12/2023]
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31
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Lucena CAAD, Costa SCD, Eleamen GRDA, Mendonça EADM, Oliveira EE. Desenvolvimento de biofilmes à base de xilana e xilana/gelatina para produção de embalagens biodegradáveis. POLIMEROS 2017. [DOI: 10.1590/0104-1428.2223] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resumo O objetivo deste trabalho foi desenvolver e caracterizar filmes biodegradáveis à base de xilana extraída de sabugo de milho com potencial uso como uma nova matéria-prima para embalagens biodegradáveis. Para tanto, os filmes foram produzidos através da secagem das dispersões filmogênicas com diferentes concentrações de xilana (150 mg, 300 mg, 600 mg), e glicerol (5%, 10%, 15%), com ou sem adição de gelatina (1000 mg). A caracterização avaliou a morfologia, espessura, solubilidade, biodegradabilidade e opacidade. Os filmes com melhores propriedades foram testados como biocobertura em uvas ‘Itália’ em duas condições de temperatura: ambiente (25 °C) e refrigerada (4 °C). Os parâmetros de perda de massa e acidez objetivaram avaliar sua eficácia. Os resultados mostraram que os filmes a base de xilana/gelatina apresentaram os melhores aspectos macroscópicos. Além disso, o aumento da concentração de xilana fez decrescer sua solubilidade. Conclui-se que a eficácia dos filmes como bioembalagem foi dependente da concentração de xilana na formulação e do período de avaliação.
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32
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Galkin M, Di Francesco D, Edlund U, Samec JSM. Sustainable sources need reliable standards. Faraday Discuss 2017; 202:281-301. [DOI: 10.1039/c7fd00046d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review discusses the challenges within the research area of modern biomass fractionation and valorization. The current pulping industry focuses on pulp production and the resulting cellulose fiber. Hemicellulose and lignin are handled as low value streams for process heat and the regeneration of process chemicals. The paper and pulp industry have therefore developed analytical techniques to evaluate the cellulose fiber, while the other fractions are given a low priority. In a strive to also use the hemicellulose and lignin fractions of lignocellulosic biomass, moving towards a biorefining concept, there are severe shortcomings with the current pulping techniques and also in the analysis of the biomass. Lately, new fractionation techniques have emerged which valorize a larger extent of the lignocellulosic biomass. This progress has disclosed the shortcomings in the analysis of mainly the hemicellulose and lignin structure and properties. To move the research field forward, analytical tools for both the raw material, targeting all the wood components, and the generated fractions, as well as standardized methods for evaluating and reporting yields are desired. At the end of this review, a discourse on how such standardizations can be implemented is given.
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Affiliation(s)
- Maxim V. Galkin
- Department of Organic Chemistry
- Stockholm University
- Stockholm
- Sweden
| | | | - Ulrica Edlund
- Fiber and Polymer Technology
- Royal Institute of Technology (KTH)
- SE-100 44 Stockholm
- Sweden
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33
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Zeng Y, Yarbrough JM, Mittal A, Tucker MP, Vinzant TB, Decker SR, Himmel ME. In situ label-free imaging of hemicellulose in plant cell walls using stimulated Raman scattering microscopy. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:256. [PMID: 27895710 PMCID: PMC5120481 DOI: 10.1186/s13068-016-0669-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 11/15/2016] [Indexed: 05/19/2023]
Abstract
BACKGROUND Plant hemicellulose (largely xylan) is an excellent feedstock for renewable energy production and second only to cellulose in abundance. Beyond a source of fermentable sugars, xylan constitutes a critical polymer in the plant cell wall, where its precise role in wall assembly, maturation, and deconstruction remains primarily hypothetical. Effective detection of xylan, particularly by in situ imaging of xylan in the presence of other biopolymers, would provide critical information for tackling the challenges of understanding the assembly and enhancing the liberation of xylan from plant materials. RESULTS Raman-based imaging techniques, especially the highly sensitive stimulated Raman scattering (SRS) microscopy, have proven to be valuable tools for label-free imaging. However, due to the complex nature of plant materials, especially those same chemical groups shared between xylan and cellulose, the utility of specific Raman vibrational modes that are unique to xylan have been debated. Here, we report a novel approach based on combining spectroscopic analysis and chemical/enzymatic xylan removal from corn stover cell walls, to make progress in meeting this analytical challenge. We have identified several Raman peaks associated with xylan content in cell walls for label-free in situ imaging xylan in plant cell wall. CONCLUSION We demonstrated that xylan can be resolved from cellulose and lignin in situ using enzymatic digestion and label-free SRS microscopy in both 2D and 3D. We believe that this novel approach can be used to map xylan in plant cell walls and that this ability will enhance our understanding of the role played by xylan in cell wall biosynthesis and deconstruction.
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Affiliation(s)
- Yining Zeng
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO 80401 USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, PO Box 2008 MS6341, Oak Ridge, TN 37831 USA
| | - John M. Yarbrough
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO 80401 USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, PO Box 2008 MS6341, Oak Ridge, TN 37831 USA
| | - Ashutosh Mittal
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO 80401 USA
| | - Melvin P. Tucker
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401 USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, PO Box 2008 MS6341, Oak Ridge, TN 37831 USA
| | - Todd B. Vinzant
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO 80401 USA
| | - Stephen R. Decker
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO 80401 USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, PO Box 2008 MS6341, Oak Ridge, TN 37831 USA
| | - Michael E. Himmel
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO 80401 USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, PO Box 2008 MS6341, Oak Ridge, TN 37831 USA
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34
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Cheng HN, Furtado RF, Alves CR, do Socorro Rocha Bastos M, Kim S, Biswas A. Novel polyurethanes from xylan and TDI: Preparation and characterization. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2016. [DOI: 10.1080/1023666x.2016.1222491] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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35
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Konduri MK, Fatehi P. Synthesis and characterization of carboxymethylated xylan and its application as a dispersant. Carbohydr Polym 2016; 146:26-35. [DOI: 10.1016/j.carbpol.2016.03.036] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 03/13/2016] [Accepted: 03/16/2016] [Indexed: 11/16/2022]
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36
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Moreira D, Gullón B, Gullón P, Gomes A, Tavaria F. Bioactive packaging using antioxidant extracts for the prevention of microbial food-spoilage. Food Funct 2016; 7:3273-82. [DOI: 10.1039/c6fo00553e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bioactive food packaging is an innovative approach for the prevention of the growth of food-spoilage microorganisms.
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Affiliation(s)
- Diana Moreira
- CBQF – Centro de Biotecnologia e Química Fina – Laboratório Associado
- Escola Superior de Biotecnologia
- Universidade Católica Portuguesa/Porto
- 4202-401 Porto
- Portugal
| | - Beatriz Gullón
- CBQF – Centro de Biotecnologia e Química Fina – Laboratório Associado
- Escola Superior de Biotecnologia
- Universidade Católica Portuguesa/Porto
- 4202-401 Porto
- Portugal
| | - Patricia Gullón
- CBQF – Centro de Biotecnologia e Química Fina – Laboratório Associado
- Escola Superior de Biotecnologia
- Universidade Católica Portuguesa/Porto
- 4202-401 Porto
- Portugal
| | - Ana Gomes
- CBQF – Centro de Biotecnologia e Química Fina – Laboratório Associado
- Escola Superior de Biotecnologia
- Universidade Católica Portuguesa/Porto
- 4202-401 Porto
- Portugal
| | - Freni Tavaria
- CBQF – Centro de Biotecnologia e Química Fina – Laboratório Associado
- Escola Superior de Biotecnologia
- Universidade Católica Portuguesa/Porto
- 4202-401 Porto
- Portugal
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37
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Chen GG, Qi XM, Li MP, Guan Y, Bian J, Peng F, Yao CL, Sun RC. Hemicelluloses/montmorillonite hybrid films with improved mechanical and barrier properties. Sci Rep 2015; 5:16405. [PMID: 26549418 PMCID: PMC4637904 DOI: 10.1038/srep16405] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 10/13/2015] [Indexed: 11/09/2022] Open
Abstract
A facile and environmentally friendly method was introduced to incorporate montmorillonite (MMT) as an inorganic phase into quaternized hemicelluloses (QH) for forming hemicellulose-based films. Two fillers, polyvinyl alcohol (PVA) and chitin nanowhiskers (NCH), were added into the hemicelluloses/MMT hybrid matrices to prepare hybrid films, respectively. The hybrid films were nanocomposites with nacre-like structure and multifunctional characteristics including higher strength and good oxygen barrier properties via the electrostatic and hydrogen bonding interactions. The addition of PVA and NCH could induce changes in surface topography, and effectively enhance mechanical strength, thermal stability, transparency, and oxygen barrier properties. The tensile strengths of the composite films FPVA(0.3), FPVA(0.5), and FNCH(0.8) were 53.7, 46.3, and 50.1 MPa, respectively, which were 171%, 134%, and 153% larger than the FQH-MMT film (19.8 MPa). The tensile strength, and oxygen transmission rate of QH-MMT-PVA film were better than those of quaternized hemicelluloses/MMT films. Thus, the proper filler is very important for the strength of the hybrid film. These results provide insights into the understanding of the structural relationships of hemicellulose-based composite films in coating and packaging application for the future.
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Affiliation(s)
- Ge-Gu Chen
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Xian-Ming Qi
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Ming-Peng Li
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Ying Guan
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Jing Bian
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Feng Peng
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Chun-Li Yao
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Run-Cang Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
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38
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Svärd A, Brännvall E, Edlund U. Rapeseed straw as a renewable source of hemicelluloses: Extraction, characterization and film formation. Carbohydr Polym 2015; 133:179-86. [DOI: 10.1016/j.carbpol.2015.07.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 07/02/2015] [Accepted: 07/05/2015] [Indexed: 11/26/2022]
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39
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Synthesis and characterization of carboxymethyl xylan-g-poly(propylene oxide) and its application in films. Carbohydr Polym 2015; 133:117-25. [DOI: 10.1016/j.carbpol.2015.07.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 07/04/2015] [Accepted: 07/07/2015] [Indexed: 11/19/2022]
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40
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González-Estrada R, Calderón-Santoyo M, Carvajal-Millan E, Ascencio Valle FDJ, Ragazzo-Sánchez JA, Brown-Bojorquez F, Rascón-Chu A. Covalently Cross-Linked Arabinoxylans Films for Debaryomyces hansenii Entrapment. Molecules 2015; 20:11373-86. [PMID: 26102070 PMCID: PMC6272609 DOI: 10.3390/molecules200611373] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 06/11/2015] [Accepted: 06/12/2015] [Indexed: 11/16/2022] Open
Abstract
In the present study, wheat water extractable arabinoxylans (WEAX) were isolated and characterized, and their capability to form covalently cross-linked films in presence of Debaryomyces hansenii was evaluated. WEAX presented an arabinose to xylose ratio of 0.60, a ferulic acid and diferulic acid content of 2.1 and 0.04 µg∙mg(-1) WEAX, respectively and a Fourier Transform Infra-Red (FT-IR) spectrum typical of WEAX. The intrinsic viscosity and viscosimetric molecular weight values for WEAX were 3.6 dL∙g(-1) and 440 kDa, respectively. The gelation of WEAX (1% w/v) with and without D. hansenii (1 × 10(7) CFU∙cm(-2)) was rheologically investigated by small amplitude oscillatory shear. The entrapment of D. hansenii decreased gel elasticity from 1.4 to 0.3 Pa, probably by affecting the physical interactions between WEAX chains. Covalently cross-linked WEAX films containing D. hansenii were prepared by casting. Scanning electron microscopy images show that WEAX films containing D. hansenii were porous and consisted of granular-like and fibre microstructures. Average tensile strength, elongation at break and Young's modulus values dropped when D. hansenii was present in the film. Covalently cross-lined WEAX containing D. hansenii could be a suitable as a functional entrapping film.
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Affiliation(s)
| | | | - Elizabeth Carvajal-Millan
- Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora 83304, Mexico.
| | - Felipe de Jesús Ascencio Valle
- Centro de Investigaciones Biológicas del Noroeste, Km. 1 Carretera a San Juan de La Costa "El Comitán", La Paz, BCS 23097, Mexico.
| | | | - Francisco Brown-Bojorquez
- Departamento de Polímeros, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo, Sonora 83000, Mexico.
| | - Agustín Rascón-Chu
- Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora 83304, Mexico.
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Zhang W, Zhu S, Bai Y, Xi N, Wang S, Bian Y, Li X, Zhang Y. Glow discharge electrolysis plasma initiated preparation of temperature/pH dual sensitivity reed hemicellulose-based hydrogels. Carbohydr Polym 2015; 122:11-7. [PMID: 25817637 DOI: 10.1016/j.carbpol.2015.01.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/25/2014] [Accepted: 01/05/2015] [Indexed: 10/24/2022]
Abstract
The temperature/pH dual sensitivity reed hemicellulose-based hydrogels have been prepared through glow discharge electrolysis plasma (GDEP). The effect of different discharge voltages on the temperature and pH response performance of reed hemicellulose-based hydrogels was inspected, and the formation mechanism, deswelling behaviors of reed hemicellulose-based hydrogels were also discussed. At the same time, infrared spectroscopy (FT-IR), scanning differential thermal analysis (DSC) and scanning electron microscope (SEM) were adopted to characterize the structure, phase transformation behaviors and microstructure of hydrogels. It turned out to be that all reed hemicellulose-based hydrogels had a double sensitivity to temperature and pH, and their phase transition temperatures were all approximately 33 °C, as well as the deswelling dynamics met the first model. In addition, the hydrogel (TPRH-3), under discharge voltage 600 V, was more sensitive to temperature and pH and had higher deswelling ratio.
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Affiliation(s)
- Wenming Zhang
- Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China.
| | - Sha Zhu
- Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Yunping Bai
- Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Ning Xi
- Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Shaoyang Wang
- Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Yang Bian
- Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Xiaowei Li
- Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Yucang Zhang
- College of Materials and Chemical Engineering, Hainan University, Haikou 570228, China.
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Akkus M, Bahcegul E, Ozkan N, Bakir U. Post-extrusion heat-treatment as a facile method to enhance the mechanical properties of extruded xylan-based polymeric materials. RSC Adv 2014. [DOI: 10.1039/c4ra10478a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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43
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Peng P, She D. Isolation, structural characterization, and potential applications of hemicelluloses from bamboo: a review. Carbohydr Polym 2014; 112:701-20. [PMID: 25129800 DOI: 10.1016/j.carbpol.2014.06.068] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 06/17/2014] [Accepted: 06/18/2014] [Indexed: 10/25/2022]
Abstract
Bamboo is one of the mostly fast growing natural resources and has great potential to be used as a valuable feedstock for biorefinery. The hemicelluloses, next to cellulose, represent a diverse group of polysaccharides in plant cell wall. Elucidation and understanding of the hemicelluloses from bamboo play an important role in the efficient conversion of bamboo into biofuels and bioproducts. This review summarized the recent reports on hemicelluloses from bamboo, including immunohistochemical localization, focused on extraction and purification methods, chemical components, characterization of structural features, as well as physicochemical properties. In addition, attention was also paid to derivatives prepared from bamboo hemicelluloses and to potential applications of bamboo hemicelluloses in a variety of areas such as biomaterials, biofuel, and food.
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Affiliation(s)
- Pai Peng
- College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Diao She
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China; Institute of Soil and Water Conservation, CAS&MWR, Yangling 712100, China.
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44
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Shi J, Yang Q, Lin L. The structural features of hemicelluloses dissolved out at different cooking stages of active oxygen cooking process. Carbohydr Polym 2014; 104:182-90. [DOI: 10.1016/j.carbpol.2014.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 11/28/2013] [Accepted: 01/04/2014] [Indexed: 11/29/2022]
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45
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Wang S, Ren J, Li W, Sun R, Liu S. Properties of polyvinyl alcohol/xylan composite films with citric acid. Carbohydr Polym 2014; 103:94-9. [DOI: 10.1016/j.carbpol.2013.12.030] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 11/30/2013] [Accepted: 12/10/2013] [Indexed: 11/28/2022]
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46
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Corncob arabinoxylan for new materials. Carbohydr Polym 2014; 102:12-20. [DOI: 10.1016/j.carbpol.2013.11.011] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 11/03/2013] [Accepted: 11/07/2013] [Indexed: 11/20/2022]
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47
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Zhang XQ, Chen MJ, Liu CF, Sun RC. Dual-component system dimethyl sulfoxide/LiCl as a solvent and catalyst for homogeneous ring-opening grafted polymerization of ε-caprolactone onto xylan. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:682-690. [PMID: 24387806 DOI: 10.1021/jf4036047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The preparation of xylan-graft-poly(ε-caprolactone) (xylan-g-PCL) copolymers was investigated by homogeneous ring-opening polymerization (ROP) in a dual-component system containing Lewis base LiCl and strong polar aprotic solvent dimethyl sulfoxide (DMSO). DMSO/LiCl acted as solvent, base, and catalyst for the ROP reaction. The effects of the parameters, including the reaction temperature, molar ratio of ε-caprolactone (ε-CL) to anhydroxylose units (AXU) in xylan, and reaction time, on the degree of substitution (DS) and weight percent of PCL side chain (WPCL) were investigated. The results showed that xylan-g-PCL copolymers with low DS in the range of 0.03-0.39 were obtained under the given conditions. The Fourier transform infrared spectroscopy (FTIR), (1)H nuclear magnetic resonance (NMR), (13)C NMR, (1)H-(1)H correlation spectroscopy (COSY), and (1)H-(13)C correlation two-dimensional (2D) NMR [heteronuclear single-quantum coherence (HSQC)] characterization provided more evidence of the attachment of side chains onto xylan. Only one ε-CL was confirmed to be attached onto xylan with each side chain. Integration of resonances assigned to the substituted C2 and C3 in the HSQC spectrum also indicated 69.23 and 30.77% of PCL side chains attached to AXU at C3 and C2 positions, respectively. Although the attachment of PCL onto xylan led to the decreased thermal stability of xylan, the loss of unrecovered xylan fractions with low molecular weight because of the high solubility of xylan in DMSO/LiCl resulted in the increased thermal stability of the samples. This kind of xylan derivative has potential application in environmentally friendly and biodegradable materials considering the good biodegradability of xylan and PCL.
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Affiliation(s)
- Xue-Qin Zhang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
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48
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Bahcegul E, Toraman HE, Erdemir D, Akinalan B, Ozkan N, Bakir U. An unconventional approach for improving the integrity and mechanical properties of xylan type hemicellulose based films. RSC Adv 2014. [DOI: 10.1039/c4ra05109b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Inclusion of the salt KAcO into hemicellulose based polymeric films results in improved film formation and mechanical properties. Considering this beneficial effect of KAcO, its separation during the hemicellulose isolation process is not always a necessity for film production.
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Affiliation(s)
- Erinc Bahcegul
- Department of Biotechnology
- Middle East Technical University
- Ankara 06800, Turkey
| | - Hilal E. Toraman
- Department of Chemical Engineering
- Middle East Technical University
- Ankara 06800, Turkey
| | - Duygu Erdemir
- Department of Chemical Engineering
- Middle East Technical University
- Ankara 06800, Turkey
| | - Busra Akinalan
- Department of Chemical Engineering
- Middle East Technical University
- Ankara 06800, Turkey
| | - Necati Ozkan
- Department of Polymers Science and Technology
- Middle East Technical University
- Ankara 06800, Turkey
- METU Central Laboratory
- Middle East Technical University
| | - Ufuk Bakir
- Department of Biotechnology
- Middle East Technical University
- Ankara 06800, Turkey
- Department of Chemical Engineering
- Middle East Technical University
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49
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Carboxymethylation of alkali extracted xylan for preparation of bio-based packaging films. Carbohydr Polym 2014; 100:89-96. [DOI: 10.1016/j.carbpol.2013.03.048] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 02/23/2013] [Accepted: 03/15/2013] [Indexed: 11/17/2022]
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50
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Zhou D, Bayati F, Choi P. On the weak dependence of water diffusivity on the degree of hydrophobicity of acetylated hydroxypropyl xylan. Carbohydr Polym 2013; 98:644-9. [DOI: 10.1016/j.carbpol.2013.06.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 06/07/2013] [Accepted: 06/19/2013] [Indexed: 10/26/2022]
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