9,895 results match your criteria Carbohydrate polymers[Journal]


Thiolated chitosans: Are Cys-Cys ligands key to the next generation?

Carbohydr Polym 2020 Aug 23;242:116395. Epub 2020 May 23.

Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innsbruck 6020, Austria. Electronic address:

The potential of Cys-Cys ligands for the development of a novel type of S-protected thiomers was evaluated. S-protected thiomers chitosan-N-acetylcysteine-mercaptonicotinamide (CS-NAC-MNA) and chitosan-N-acetylcysteine-N-acetylcysteine (CS-NAC-NAC) were synthesized and characterized. Viscosity of polymers in presence of various concentrations of S-amino acids was monitored. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116395DOI Listing

Functionalized cellulose nanocrystals as the performance regulators of poly(β-hydroxybutyrate-co-valerate) biocomposites.

Carbohydr Polym 2020 Aug 12;242:116399. Epub 2020 May 12.

Department of Chemical Engineering, University of Waterloo, Ontario, N2L3G1, Canada.

To investigate the relationship between functional groups on cellulose nanocrystals (CNC) and the performance of poly(β-hydroxybutyrate-co-valerate) (PHBV), the surface of CNC was modified by surface graft modification and PHBV/CNC biocomposites were prepared by melt blending. To demonstrate the interfacial adhesion difference between hydrophobic PHBV and hydrophilic CNC, palmitoyl chloride and ε-caprolactone had been used to tailor the oleophilic property of CNC. Results showed that CNC had heterogeneous nucleation effect on the crystallization process of PHBV, while the entanglement of molecular chains weakened the promoting functions of CNC-g-C16 (CNC grafted with palmitoyl chloride) and CNC-g-CL (CNC grafted with ε-caprolactone). Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116399DOI Listing

Widespread applications of host-guest interactive cyclodextrin functionalized polymer nanocomposites: Its meta-analysis and review.

Carbohydr Polym 2020 Aug 17;242:116430. Epub 2020 May 17.

Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, Vile Parle [W], Mumbai, 400056, Maharashtra, India. Electronic address:

Cyclodextrins are cyclic oligosaccharides, having tyroid shape of the molecule which has a hydrophobic cavity and outer hydrophilic surface. This characteristic feature of the dextrins allows it to function as a functionalizing as well as a stabilizing agent. Polymer nanocomposites are nanoscale composites of polymers with enhanced and synergized properties of its components and have been known to have applications in various fields of chemistry, biomedical, pharmaceutical and environmental purposes to name a few. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116430DOI Listing

In situ generation of silver nanoparticles and nanocomposite films based on electrodeposition of carboxylated chitosan.

Carbohydr Polym 2020 Aug 23;242:116391. Epub 2020 May 23.

School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China.

Herein, for the first time the electrodeposition of carboxylated chitosan is studied and utilized for the synthesis of silver nanoparticles (AgNPs) and generation of AgNPs/carboxylated chitosan nanocomposite films. Particularly, AgNPs are in situ synthesized on electrodes or substrates during the electrodeposition. Carboxylated chitosan not only acts as the green reducing agent and stabilizing agent for preparing AgNPs, but also serves as the main component in the electrodeposited nanocomposite film. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116391DOI Listing

Enhancement of the permeability and activities of epigallocatechin gallate by quaternary ammonium chitosan/fucoidan nanoparticles.

Carbohydr Polym 2020 Aug 15;242:116312. Epub 2020 May 15.

Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei City, 11031, Taiwan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei City, 11031, Taiwan; Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei City, 11031, Taiwan. Electronic address:

Epigallocatechin gallate (EGCG) has many biological functions; however, the use of EGCG in biomedical and food industries was limited due to its poor oral absorption and high susceptibility to degradation. In this study, a mucoadhesive quaternary chitosan was synthesized and combined with fucoidan (FD) (or depolymerized lower molecular weight fucoidan, LMWF) to prepare EGCG-loaded nanoparticles, which extended EGCG release over 300 min and enhanced the transepithelial permeation of EGCG using Caco-2 cells as a model for intestinal absorption. The nanoparticls protected EGCG against degradation in phosphate buffer (pH 6. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116312DOI Listing
August 2020
4.074 Impact Factor

Effect of sodium benzoate and chlorhexidine gluconate on a bio-thermoplastic elastomer made from thermoplastic starch-chitosan blended with epoxidized natural rubber.

Carbohydr Polym 2020 Aug 12;242:116421. Epub 2020 May 12.

School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Mae-Hea, Mueang, Chiang Mai 50100, Thailand; Cluster of Agro Bio-Circular-Green Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand. Electronic address:

Thermoplastic elastomer (TPE) was developed by blending thermoplastic starch (TPS) with rubber. Thermoplastic starch-chitosan (TPSC) was prepared by the solution mixing of cassava starch, chitosan (CTS) and glycerol in acidified water (lactic acid 1 wt%) at 80 °C follow by melt mixing at 130 °C. Sodium benzoate (BEN) and chlorhexidine gluconate (Cl) were added during the solution mixing as additives for antimicrobial properties. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116421DOI Listing

Effect of chitooligosaccharides on human gut microbiota and antiglycation.

Carbohydr Polym 2020 Aug 11;242:116413. Epub 2020 May 11.

State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China.

Chitooligosaccharides (COS) have garnered great attention in the field of human healthcare. The prebiotic activities and antiglycation of COS were investigated using a combination of in vitro and in vivo studies. COS supplementation dramatically increased the levels of acetic acid, while reducing the concentrations of propionic and butyric acids. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116413DOI Listing

Anticoagulant-active sulfated arabinogalactan from Chaetomorpha linum: Structural characterization and action on coagulation factors.

Carbohydr Polym 2020 Aug 23;242:116394. Epub 2020 May 23.

Key Laboratory of Marine Drugs of Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China. Electronic address:

A sulfated polysaccharide from the green alga Chaetomorpha linum, designated CLS4, was isolated by water extraction, anion-exchange and size-exclusion chromatography. Chemical and spectroscopic analyses demonstrated that CLS4 was a sulfated arabinogalactan, which was constituted by (1→6)-β-d-galactopyranose and (1→5)-α-l-arabinofuranose residues with sulfate groups at C-2/ C-3 of (1→5)-α-l-arabinofuranose and C-2/C-4 of (1→6)-β-d-galactopyranose. CLS4 possessed strong anticoagulant activity in vitro or in vivo as evaluated by activated partial thromboplastin time and thrombin time assays. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116394DOI Listing
August 2020
4.074 Impact Factor

Recent advances in polysaccharides stabilized emulsions for encapsulation and delivery of bioactive food ingredients: A review.

Carbohydr Polym 2020 Aug 23;242:116388. Epub 2020 May 23.

Zhejiang University, College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agri-Food Processing, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Hangzhou 310058, People's Republic of China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, People's Republic of China; Fuli Institute of Food Science, Hangzhou 310058, People's Republic of China. Electronic address:

Many bioactive food ingredients were encapsulated in different forms to improve their stability and bioavailability. Emulsions have showed excellent properties in encapsulation, controlled release, and targeted delivery of bioactives. Polysaccharides are widely available and have different structures with different advantages including non-toxic, easily digested, biocompatible and can keep stable over a wide range of pH and temperatures. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116388DOI Listing
August 2020
4.074 Impact Factor

Physicochemical properties of pea starch-lauric acid complex modified by maltogenic amylase and pullulanase.

Carbohydr Polym 2020 Aug 21;242:116332. Epub 2020 Apr 21.

State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China; School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China. Electronic address:

An enzymatic method was investigated to initiate a strategy of increasing the branch density of pea starch, thus facilitating the formation of a starch-lipid complex after debranching. When the starch was modified by exposure to maltogenic amylase (MAL) and pullulanase (PUL), lower molecular weight values and higher amylose content resulted compared to the untreated sample. High-performance anion-exchange chromatography results suggested that the average chain length decreased and the branch density increased after the starch received MAL treatment. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116332DOI Listing

Pyrodextrinization of yam (Dioscorea sp.) starch isolated from tubers grown in Brazil and physicochemical characterization of yellow pyrodextrins.

Carbohydr Polym 2020 Aug 11;242:116382. Epub 2020 May 11.

Department of Biochemistry and Molecular Biology, Federal University of Ceará, CEP 60440-900, Fortaleza, Ceará, Brazil. Electronic address:

This study optimizes the pyrodextrinization of yam (Dioscorea sp.) starch isolated from tubers grown in Brazil to produce a yellow pyrodextrin with the lowest enzymatically available starch (AS) content and color difference (ΔE) index. At 140 °C (fixed heating temperature), the effects of acid concentration (0. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116382DOI Listing

Novel approach to synthesis of silver nanoparticles in interpolyelectrolyte complexes based on pectin, chitosan, starch and their derivatives.

Carbohydr Polym 2020 Aug 19;242:116431. Epub 2020 May 19.

Zabolotny Institute of Microbiology and Virology, The National Academy of Sciences of Ukraine, Ukraine.

The effect of the chemical structure of interpolyelectrolyte complexes (IPEC) based on polymers of natural origin (pectin-chitosan, pectin-cationic starch (starch), carboxymethylcellulose (CMC)-cationic β-cyclodextrin (β-CD), anionic starch (starch)-cationic starch (starch) on the structure, morphology, thermomechanical and antimicrobial properties of silver-containing nanocomposites obtained by thermochemical reduction of Ag ions in interpolyelectrolyte-metal complexes (IMC) was studied. Thermochemical reduction of Ag ions in the IMC bulk for 30 min at 150 °C led to formation of silver-containing nanocomposites and this fact was confirmed by wide-angle X-ray scattering method. Transmission electron microscopy showed that different sized of silver nanoparticles were formed depending on the chemical structure of IPEC. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116431DOI Listing

Metal nanoparticles containing chitosan wrapped cellulose nanocomposites for catalytic hydrogen production and reduction of environmental pollutants.

Carbohydr Polym 2020 Aug 11;242:116286. Epub 2020 May 11.

Chemistry Department, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia. Electronic address:

Efficient nano-catalysts based-on metal nanoparticles (copper, silver and iron) supported on carbohydrate polymer (cotton cellulose) nanocomposite with long-term stability and efficient hydrogen production and removal of organic pollutants has been developed. The catalytic efficiency of the developed materials was evaluated in hydrogen production and reduction of organic pollutants, where it was found that copper nanoparticles supported on cotton cellulosic nanocomposite (Cu@CC) was much more efficient in hydrogen production and catalytic reduction of organic pollutants among all the tested catalysts. Cu@CC exhibited high catalytic activity in methanolysis of sodium borohydride with H generation rate of 1253 mLg min at room temperature. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116286DOI Listing

Effect of eggshell membrane as porogen on the physicochemical structure and protease immobilization of chitosan-based macroparticles.

Carbohydr Polym 2020 Aug 12;242:116387. Epub 2020 May 12.

National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.

Chitosan-based macroparticle is a common carrier for enzyme immobilization applied in food industry. Driven by the requirement of large carrier pores for the biomacromolecular substrates such as protein, the eggshell membrane powder (ESMP) was employed as multifunctional porogen to improve the physicochemical structure of chitosan-based macroparticles. The prepared macroparticles were characterized by SEM, XRD, FTIR, Raman spectroscopy, nitrogen adsorption-desorption isotherms, and thermogravimetric analysis. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116387DOI Listing

Effects of hydrogen peroxide treatment on pulp breakdown, softening, and cell wall polysaccharide metabolism in fresh longan fruit.

Carbohydr Polym 2020 Aug 19;242:116427. Epub 2020 May 19.

College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Key Laboratory of Postharvest Biology of Subtropical Special Agricultural Products (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, Fujian, 350002, China. Electronic address:

Longan (Dimocarpus longan Lour.) is prone to pulp softening and pulp breakdown, leading to a loss of its nutrients including polysaccharides. ROS is one main factor affecting fruit quality. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116427DOI Listing

Cationised dextran and pullulan modified with diethyl aminoethyl methacrylate for gene delivery in cancer cells.

Carbohydr Polym 2020 Aug 16;242:116426. Epub 2020 May 16.

Biosurface Technology Division, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.

This work describes the synthesis and characterisation of cationised dextran and pullulan modified with diethyl aminoethyl methacrylate (DEAEM) for gene delivery in cancer cells. To dextran and pullulan, PEI was conjugated to impart cationicity. These cationised polysaccharides were then modified with DEAEM monomer via Michael addition reaction and synthesised four different derivatives viz DPD I, DPD II, PPD I and PPD II. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116426DOI Listing

Unique and outstanding quantum dots (QD)/tunicate cellulose nanofibrils (TCNF) nanohybrid platform material for use as 1D ink and 2D film.

Carbohydr Polym 2020 Aug 13;242:116396. Epub 2020 May 13.

Department of Fibre and Polymer Technology, Royal Institute of Technology, KTH, Teknikringen 56-58, SE-100 44, Stockholm, Sweden; Bioeconomy, RISE Research Institutes of Sweden, Drottning Kristinas Väg 61, SE-114 86, Stockholm, Sweden.

Quantum dots (QD)/polymer materials have wide applications in biological imaging, clinical diagnostics, anti-counterfeiting materials, light-emitting devices and solar cells. The development of QD/cellulose nanofibrils (CNF) hybrids with a more perfect structure and excellent properties is important for improving known applications. A unique tunicate CNF (TCNF) was homogeneously blended with outstanding CdSe/CdS core/shell QD to prepare a novel QD/TCNF hybrid. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116396DOI Listing

Swelling of mucoadhesive electrospun chitosan/polyethylene oxide nanofibers facilitates adhesion to the sublingual mucosa.

Carbohydr Polym 2020 Aug 16;242:116428. Epub 2020 May 16.

Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark; Center for Biopharmaceuticals and Biobarriers in Drug Delivery, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark. Electronic address:

Mucoadhesive chitosan-based electrospun nanofibers are promising candidates for overcoming challenges associated with sublingual drug delivery, yet studies focusing on evaluating the mucoadhesive properties of nanofibers for sublingual administration are limited. The aim was to elucidate the mucoadhesive properties of chitosan/polyethylene oxide (PEO) nanofibers focusing on how the degree of deacetylation (DDA, 53-96 %) of chitosan influenced their morphological and mucoadhesive properties. The mechanism of mucoadhesion was explained by the intermolecular interactions of chitosan with mucin from bovine submaxillary glands using quartz-crystal microbalance with dissipation monitoring and by adhesion of the nanofibers to ex vivo porcine sublingual mucosa. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116428DOI Listing

Effects of Mesona chinensis polysaccharide on the thermostability, gelling properties, and molecular forces of whey protein isolate gels.

Carbohydr Polym 2020 Aug 23;242:116424. Epub 2020 May 23.

State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China; China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, Nanchang, 330047, China. Electronic address:

The effects of Mesona chinensis polysaccharide (MCP) on the water holding capacity (WHC), thermostability, rheological properties, microstructure, and molecular forces of MCP-whey protein isolate (WPI) gels were investigated. Results showed that the MCP-WPI gels had higher WHC, thermal stability, and thermal transition temperature than the WPI gel. The apparent viscosities, loss modulus (G″), and storage modulus (G') of the MCP-WPI gels were increased with the MCP concentration. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116424DOI Listing

Polycyclodextrins: Synthesis, functionalization, and applications.

Carbohydr Polym 2020 Aug 27;242:116277. Epub 2020 Apr 27.

Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 Canada. Electronic address:

Cyclodextrins (CDs) are cyclic oligosaccharides with unique conical structure enabling host-guest inclusion complexes. However, virgin CDs sufferfrom low solubility, lack of functional groups and its inability to strong complexation with the guests. One of the most efficient ways to improve the properties of cyclodextrins is the synthesis of polycyclodextrins. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116277DOI Listing

Carboxymethyl cellulose-hydrogel embedded with modified magnetite nanoparticles and porous carbon: Effective environmental adsorbent.

Carbohydr Polym 2020 Aug 12;242:116402. Epub 2020 May 12.

Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 16206 Praha, Czech Republic.

Adsorption is the most efficient technique for the removal of metal ions and organic dyes from water. This stimulates demand for the preparation of eco-friendly adsorbents. In this study, magnetic hydrogels based on a crosslinked carboxymethyl cellulose grafted acrylamide (CMC-g-AM) embedded with porous carbon (PC) and citric acid-modified magnetite were prepared. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116402DOI Listing

Gelation, flame retardancy, and physical properties of phosphorylated microcrystalline cellulose aerogels.

Carbohydr Polym 2020 Aug 23;242:116422. Epub 2020 May 23.

Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao City, 266042, Shandong, PR China.

Flame-retardant bio-based cellulose aerogels, with abundant renewable sources, are considered as promising sustainable heat-insulation alternatives to conventional petroleum-based foams. An environmentally friendly method was employed to fabricate phosphorylated microcrystalline cellulose (PMCC) aerogel through the gelation of PMCC/HO dispersion and freeze-drying of PMCC hydrogel. The dispersion stability of PMCC and its readiness to undergo gelation in the aqueous phase were enhanced by increasing the phosphorous content via phosphorylation, thereby effectively weakening the strong intra- and intermolecular hydrogen-bond interactions of the cellulose chains. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116422DOI Listing

Morphology and properties of thermoplastic starch blended with biodegradable polyester and filled with halloysite nanoclay.

Carbohydr Polym 2020 Aug 15;242:116392. Epub 2020 May 15.

BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, Strasbourg Cedex, 2 67087, France.

The incorporation of halloysite clay nanotubes (HNTs) into thermoplastic starch/poly(butylene adipate-co-terephthalate) (TPS/PBAT) blends has been investigated with the aim of improving the compatibility and properties of the matrix. TPS/PBAT/HNTs nano-biocomposites with different TPS/PBAT weight fractions and HNTs contents were elaborated using a melt blending process, and their morphology and properties were investigated. The TPS80/PBAT20 and TPS20/PBAT80 blends exhibited dispersed phases of small droplets of PBAT or TPS, respectively, whereas the TPS50/PBAT50 blend presented a more homogeneous structure. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116392DOI Listing

Supramolecular hydrogels based on cellulose for sustained release of therapeutic substances with antimicrobial and wound healing properties.

Carbohydr Polym 2020 Aug 23;242:116383. Epub 2020 May 23.

Bio & NanoMaterials Lab, Drug Delivery and Controlled Release, Universidad de Talca, Talca, 3460000, Maule, Chile; Departamento de Microbiología, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, 3460000, Maule, Chile. Electronic address:

A multifaceted hydrogel-based formulation was reported. The hydrogel was prepared by crosslinking cellulose and substituted chalcone. Moreover, the formulation was conjugated with carbon nanotubes with the aim of increasing the loading amount of bioactive compounds such as allantoin, dexpanthenol, resveratrol and linezolid. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116383DOI Listing
August 2020
4.074 Impact Factor

Feasibility of chitosan crosslinked with genipin as biocoating for cellulose-based materials.

Carbohydr Polym 2020 Aug 16;242:116429. Epub 2020 May 16.

University of Grenoble Alpes, LGP2, F-38000, Grenoble, France.

Crosslinking with genipin increases the acidic stability of chitosan-based materials, opening an opportunity to explore new applications. In this work, the viability of using chitosan-genipin solutions on cellulose-based materials coating was studied. Non-calendered paper and cardboard were used as raw materials. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116429DOI Listing

Egg-box model-based gelation of alginate and pectin: A review.

Carbohydr Polym 2020 Aug 14;242:116389. Epub 2020 May 14.

Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address:

Alginate and pectin are emblematic natural polyuronates that have been widely used in food, cosmetics and medicine. Ca-dependent gelation is one of their most important functional properties. The gelation mechanisms of alginate and pectin, known as egg-box model, were believed to be basically the same, because their Ca-binding sites show a mirror symmetric conformation. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116389DOI Listing
August 2020
4.074 Impact Factor

Chitin Pickering Emulsion for Oil Inclusion in Composite Films.

Carbohydr Polym 2020 Aug 27;242:116366. Epub 2020 Apr 27.

UR1268 Biopolymères Interactions Assemblages, INRA, 44316, Nantes, France. Electronic address:

A film containing a stable and well-dispersed hydrophobic phase in a surfactant-free bio-based hydrophilic matrix is proposed. In this study, an aqueous suspension of rod-like chitin nanocrystals (ChiNCs), mixed with paraffin oil, form an oil-in-water Pickering emulsion with a droplet diameter of 3 μm. These emulsions mixed with a 5 wt% starch solution formed homogeneous composite films by solvent casting. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116366DOI Listing

Chitosan: A compound for drug delivery system in gastric cancer-a review.

Carbohydr Polym 2020 Aug 13;242:116403. Epub 2020 May 13.

Department of Biochemistry and Nutrition, Research Center for Evidence-Based Health Management, Maragheh University of Medical Sciences, Maragheh, Iran. Electronic address:

Gastric cancer is known as the fourth most common cancer and the second main cause of cancer-related deaths. Gastric cancer has some characteristics including high incidence rates of metastasis and mortality as well as low rates of early diagnosis, radical resection and 5-year survival. Radical surgery and following chemotherapy has been done for patients with early gastric cancer leading to 90 % survival rate in 5-year after operation. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116403DOI Listing

Cyclodextrin as a magic switch in covalent and non-covalent anticancer drug release systems.

Carbohydr Polym 2020 Aug 14;242:116401. Epub 2020 May 14.

School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China. Electronic address:

Cancer has been a threat to human health, so its treatment is a huge challenge to the present medical field. One of commonly used methods is the controlled release of anticancer drug to reduce the dose for patients, increase the stability of drug treatment and minimize side effects. Cyclodextrin is a kind of cyclic oligosaccharide produced by amylase hydrolysis. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116401DOI Listing

Withdrawal notice to "Polyoxometalate-catalyzed hydrolysis of the hemicelluloses by (Mo-V-P)-heteropolyacids-Statistical modeling using response surfaces" [Carbohydr. Polym. 233 (2020) 115799].

Carbohydr Polym 2020 08 20;242:115931. Epub 2020 May 20.

University of Lisbon, School of Agriculture, Forest Research Center (CEF), Tapada da Ajuda, 1349-017, Lisbon, Portugal.

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http://dx.doi.org/10.1016/j.carbpol.2020.115931DOI Listing

A method for characterizing short-range molecular order in amorphous starch.

Carbohydr Polym 2020 Aug 19;242:116405. Epub 2020 May 19.

The University of Sydney, Sydney Institute of Agriculture, School of Life and Environmental Sciences, NSW, 2006, Australia.

This study presents a new method for characterizing short-range molecular order in amorphous starch using Raman spectroscopy and wide-angle X-ray diffraction (XRD). Amorphous wheat and potato starch samples with different degrees of short-range molecular order were prepared by heating starch:water mixtures ranging from 1:1 to 1:19 at 100 °C for 10 min. The XRD and C CP/MAS NMR spectroscopy analyses showed that all starch samples had lost their long-range crystallinity and from that perspective were considered to be gelatinized. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116405DOI Listing

Preparation and characterization of Pectin/Polypyrrole based multifunctional coatings on TiNbZr alloy for orthopaedic applications.

Carbohydr Polym 2020 Aug 17;242:116285. Epub 2020 May 17.

Department of Life Science, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.

Being a natural and renewable polysaccharide, pectin (PC) is considered a polymer with promising potential for many applications. In the present investigation, novel multifunctional pectin/polypyrrole (PC/PPy) composite coatings loaded with gentamicin (GM) were electrochemically deposited on TiNbZr alloy to enhance its biocompatibility, antibacterial performance and corrosion resistance in physiological environment. Various surface and structural characterization techniques were deployed to examine the composite coatings. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116285DOI Listing
August 2020
4.074 Impact Factor

Integration of metal-free ATRP and Diels-Alder reaction toward sustainable and recyclable cellulose-based thermoset elastomers.

Carbohydr Polym 2020 Aug 13;242:116404. Epub 2020 May 13.

Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab. for Biomass Chemical Utilization, Key and Open Lab. of Forest Chemical Engineering, SFA, Key Lab. of Biomass Energy and Material, Jiangsu Province, No 16, Suojin Wucun, Nanjing, 210042, China; Institute of Forest New Technology, CAF, No 1, Dongxiaofu Haidian, Beijing, 100091, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China.

Well-defined sustainable and recyclable thermoset elastomers derived from cellulose, fatty acid and furfural were successfully prepared via photoinduced metal-free ATRP and Diels-Alder (DA) reaction. Firstly, metal free ATRP was applied to prepare a range of thermoplastic cellulose graft copolymers with furfural groups. Then, a modified epoxidized soybean oil bearing 6-maleimidohexanoic group (ESOM) as a crosslinker was employed to perform DA reaction with furfural groups in these cellulose graft copolymers, by which the copolymer formed the dynamic crosslinked network and achieved the thermoset elastomers. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116404DOI Listing

Synthesis of carboxymethylated β-glucan from naked barley bran and its antibacterial activity and mechanism against Staphylococcus aureus.

Carbohydr Polym 2020 Aug 13;242:116418. Epub 2020 May 13.

Jiangsu Institute of Agriculture Sciences for Region along the Yangtze River, Jiangsu, Rugao, 226541, PR China. Electronic address:

This study aimed to elucidate the antimicrobial efficacy of carboxymethylated β-glucan (CMG) against Staphylococcus aureus and the possible underlying mechanisms. β-Glucan (BG) was extracted from naked barley bran, then ultrafiltrated to obtain four fractions (BG-1, BG-2, BG-3, BG-4). Five types of CMG were prepared using an amidation reaction and characterized by FTIR spectroscopy. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116418DOI Listing

Preparation and activities of selenium polysaccharide from plant such as Grifola frondosa.

Carbohydr Polym 2020 Aug 12;242:116409. Epub 2020 May 12.

Active Carbohydrate Research Institute, Chongqing Key Laboratory of Green Synthesis and Application, College of Chemistry, Chongqing Normal University, Chongqing, 401331, China. Electronic address:

Selenium polysaccharide is an organic selenium compound formed by the combination of polysaccharide and selenium. The biological activity of selenium polysaccharide from plant such as Grifola frondosa is generally higher than that of selenium and polysaccharide, and it is more easily absorbed and utilized by human body. Therefore, selenium polysaccharide has a wide range of applications in immune regulation, anti-tumor, anti-oxidation, anti-aging and so on. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116409DOI Listing

Double network hydrophobic starch based amphoteric hydrogel as an effective adsorbent for both cationic and anionic dyes.

Carbohydr Polym 2020 Aug 15;242:116320. Epub 2020 May 15.

Advanced Polymer & Nanomaterial Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, 784028, Assam, India. Electronic address:

A double-network hydrophobic-hydrogel was successfully synthesized. Here epichlorohydrin (ECH) and N, N-methylene bis-acrylamide act as the crosslinkers for starch and poly(acrylic acid), respectively. The synthesized hydrogel having both positive and negative charge exhibited amphoteric properties and employed for the exclusion of anionic and cationic dyes from waste aqueous solution. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116320DOI Listing

Chitosan derivatives and their based nanoparticles: ultrasonic approach to the synthesis, antimicrobial and transfection properties.

Carbohydr Polym 2020 Aug 24;242:116478. Epub 2020 May 24.

Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya St. 6, Moscow, 117198, Russian Federation; Zelinsky Institute of Organic Chemistry RAS, Leninsky Prosp. 47, Moscow, 119991, Russian Federation.

In the present work, we demonstrate that alkylation of chitosan by alkyl halides, aza-Michael reaction with chitosan, and Ad-E reaction of chitosan with aldehydes can be efficiently mediated by ultrasound. An optimization of ultrasonic irradiation parameters allowed us to (i) accelerate the rate of the reactions dramatically, (ii) achieve high selectivity, and (iii) preserve integrity of the polysaccharide backbone avoiding its depolymerization. We evaluated antibacterial/antifungal and transfection activity of 8 different derivatives of chitosan and their based nanoparticles in vitro. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116478DOI Listing

Ionically crosslinked chitosan/poly(acrylic acid) hydrogels with high strength, toughness and antifreezing capability.

Carbohydr Polym 2020 Aug 13;242:116420. Epub 2020 May 13.

Hubei Engineering Center of Natural Polymers-Based Medical Materials, Key Laboratory of Biomedical Polymers of Ministry of Education, Sauvage Center for Molecular Sciences, Department of Chemistry, Wuhan University, Wuhan 430072, China. Electronic address:

A dual physically crosslinking (DPC) strategy is used to construct hydrogels with ultrahigh strength. First, polyelectrolyte complex (PEC) hydrogels were prepared through in situ polymerization of acrylic acid monomers in chitosan solutions. Subsequently, cations and anions were introduced into the PEC hydrogels to form strong electrostatic interactions with the polymer chains. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116420DOI Listing

Chitosan/carboxymethylcellulose-stabilized poly(lactide-co-glycolide) particles as bio-based drug delivery carriers.

Carbohydr Polym 2020 Aug 12;242:116417. Epub 2020 May 12.

Université de Lorraine, CNRS, LCPM UMR 7375, F-54000 Nancy, France. Electronic address:

Poly(lactide-co-glycolide) (PLGA) colloidal particles stabilized by complexes of two oppositely charged polysaccharides, chitosan (cationic, CS) and sodium carboxymethylcellulose (anionic, NaCMC), were fabricated. Dichloromethane containing dissolved PLGA was first emulsified in an aqueous phase containing mixtures of CS and NaCMC. Evaporation of dichloromethane from the resulting emulsion led to CS/NaCMC-covered-PLGA particles. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116417DOI Listing

Preparation of alginate oligosaccharide and its effects on decay control and quality maintenance of harvested kiwifruit.

Carbohydr Polym 2020 Aug 24;242:116462. Epub 2020 May 24.

Department of Plant Pathology, China Agricultural University, Beijing, 100193, China. Electronic address:

Alginate oligosaccharide (AOS) is a biological carbohydrate formed from the degradation of sodium alginate. AOS used in this study was enzymatically prepared and had varying degrees of polymerization (2-8). AOS applied to harvested kiwifruit stored at 25 °C inhibited gray mold, blue mold, and black rot. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116462DOI Listing

Structural, rheological, pasting and textural properties of granular cold water swelling maize starch: Effect of NaCl and CaCl.

Carbohydr Polym 2020 Aug 12;242:116406. Epub 2020 May 12.

Department of Food Science and Technology, School of Agriculture, Shiraz University, Shiraz, Iran; School of Science, RMIT University, Bundoora West Campus, Melbourne, VIC, 3083, Australia.

In this study granular cold water swelling (GCWS) starches were subjected to 0, 50, 100, 150 and 200 mM NaCl and CaCl and their effects on microstructure, rheological, pasting, and textural properties were determined. SEM images revealed that NaCl decreased the thickness of GCWS starch paste cell walls while, CaCl resulted in formation of denser and more homogenous pastes. The atomic force microscopy (AFM) results showed that NaCl increased the surface wrinkles of starch granules but CaCl reduced the roughness of starch granule surface. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116406DOI Listing

Carboxylated cellulose cryogel beads via a one-step ester crosslinking of maleic anhydride for copper ions removal.

Carbohydr Polym 2020 Aug 15;242:116397. Epub 2020 May 15.

Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue, Waterloo, ON, N2L 3G1, Canada. Electronic address:

In this study, we developed a one step protocol to prepare highly carboxylated and chemically crosslinked cellulose nanofibril (CNF) cryogel beads using maleic anhydride (MA). Fourier transform infrared spectroscopy (FTIR) and conductometric-potentiometric titration results confirmed the presence of carboxyl groups and ester linkages produced simultaneously during the ring open reaction of MA, yielding a carboxylic content of up to 2.78 mmol/g. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116397DOI Listing

Ball milling pretreatment facilitating α-amylase hydrolysis for production of starch-based bio-latex with high performance.

Carbohydr Polym 2020 Aug 15;242:116384. Epub 2020 May 15.

Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, No. 29, 13th Street, TEDA, Tianjin, 300457, PR China. Electronic address:

Starch based bio-latex has been widely researched in the coating paper area for the purpose of partial replacement of petroleum-based binders. In this paper, a green and facile ball milling pretreatment was proposed to modify the starch granules before α-amylase hydrolysis by breaking up their crystalline structure, thus improving the accessibility and susceptibility of amylase into starch structure. It was found that the improved hydrolysis process after 8 h ball milling can generate suitable degree of polymerization of polysaccharides or oligosaccharides, which further facilitated the following HO oxidation and SHMP crosslinking processes. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116384DOI Listing

Production of welan gum from cane molasses by Sphingomonas sp. FM01.

Carbohydr Polym 2020 Sep 30;244:116485. Epub 2020 May 30.

College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China. Electronic address:

As an extracellular exopolysaccharide, welan gum could serve as a suspending agent, stabilizer, emulsifier and thickener with characteristics that include bio-adhesion, non-toxicity, biocompatibility and biodegradability. In this study, Sphingomonas sp. FM01 was applied to effectively produce welan gum using cane molasses as the carbon source. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116485DOI Listing
September 2020

Thermo-irreversible glycol chitosan/hyaluronic acid blend hydrogel for injectable tissue engineering.

Carbohydr Polym 2020 Sep 24;244:116432. Epub 2020 May 24.

Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro Yuseing-gu, Daejeon 34134, Republic of Korea. Electronic address:

Thermogels that undergo temperature-dependent sol-gel transition have recently attracted attention as a promising biomaterial for injectable tissue engineering. However, conventional thermogels usually suffer from poor physical properties and low cell binding affinity, limiting their practical applications. Here, a simple approach for developing a new thermogel with enhanced physical properties and cell binding affinity is proposed. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116432DOI Listing
September 2020

Study on a Novel natural cellulosic fiber from Kigelia africana fruit: Characterization and analysis.

Carbohydr Polym 2020 Sep 26;244:116494. Epub 2020 May 26.

School of Biosciences, MAHSA University, Selangor, 42610, Malaysia. Electronic address:

In recent days, there is an increasing use of green composites in composite manufacturing, where cellulosic natural fibers have been started using for this purpose. In line with this, a novel cellulose fiber was extracted from the Kigelia africana fruit and its physical, chemical and thermal properties, crystallography and surface morphology analysis were studied and reported in this investigative research paper. The physical analysis revealed the mean tensile strength as 50. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116494DOI Listing
September 2020

A multifunctional self-crosslinked chitosan/cationic guar gum composite hydrogel and its versatile uses in phosphate-containing water treatment and energy storage.

Carbohydr Polym 2020 Sep 29;244:116472. Epub 2020 May 29.

Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada. Electronic address:

A new self-crosslinked composite hydrogel is prepared with chitosan (CS) and cationic guar gum (CGG), based on the imine and acetal chemistry for gelation. The CS/CGG hydrogel exhibits thermal/pH responsiveness, injectability, adhesiveness and good compressive strength. The hydrogel is effective in removing phosphate from wastewater through an adsorption process, during which KHPO is used as a phosphate model. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116472DOI Listing
September 2020

Preparation of millimeter-sized chitosan/carboxymethyl cellulose hollow capsule and its dye adsorption properties.

Carbohydr Polym 2020 Sep 30;244:116481. Epub 2020 May 30.

College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 26607, China. Electronic address:

In this study, millimeter-sized chitosan/carboxymethyl cellulose (CTS/CMC) hollow capsules with molar ratio of 1/1 and 1/1.5 were successfully prepared by simple mixing and stirring of positively charged CTS and negatively charged CMC solutions under electrostatic interaction. The hollow capsule exhibited distinct removal performance for three typical dyes of methylene blue, methyl orange and acid blue-113 with different charged functional groups. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116481DOI Listing
September 2020

Mechanical properties and thermal stability of intermolecular-fitted poly(vinyl alcohol)/α-chitin nanofibrous mat.

Carbohydr Polym 2020 Sep 30;244:116476. Epub 2020 May 30.

Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Chengam-ro, Nam-gu, Pohang 37673, South Korea; Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), 77 Chengam-ro, Nam-gu, Pohang 37673, South Korea; Institute for Convergence Research and Education in Advanced Technology, Yonsei University International Campus, 85, Songdogwahak-ro, 21983, Korea. Electronic address:

The major disadvantage of electrospun nanofibrous mats is their poor mechanical properties, which result from interfibrillar slips, porous structures, and the isotropic conformation of functional groups in fibers. In this work, we develop a tough electrospun mat without cost of both the stiffness and extensibility by combining two mutually exclusive polymers, i.e. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116476DOI Listing
September 2020

Recent advances on sustainable cellulosic materials for pharmaceutical carrier applications.

Carbohydr Polym 2020 Sep 30;244:116492. Epub 2020 May 30.

College of Energy, Xiamen University, Xiamen 361102, PR China; Fujian Engineering and Research Center of Clean and High-Valued Technologies for Biomass, Xiamen Key Laboratory of Clean and High-Valued Applications of Biomass, Xiamen University, Xiamen 361102, PR China. Electronic address:

Natural cellulose is a kind of both traditional and emerging multifunctional material with high surface area, high strength, flexibility, and tunable surface chemistry, intensifying the quest for various products with properties that can mimic natural designs, functions, and properties in biomaterials, cosmetics, and food products. This review summarizes the modification methods of cellulose, preparation methods, physical and chemical properties and the possible applications of cellulose-based materials as pharmaceutical carriers. Herein, its main forms such as hydrogel, aerogel, and biomineral, and recent advances on sustainable cellulosic materials for pharmaceutical carrier applications were compared. Read More

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http://dx.doi.org/10.1016/j.carbpol.2020.116492DOI Listing
September 2020
4.074 Impact Factor