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Chitbanyong K, Hou G, Shibata I, Takeuchi M, Kimura S, Isogai A. Polyglucuronic acids prepared from α-(1 → 3)-glucan by TEMPO-catalytic oxidation. Carbohydr Polym 2024; 330:121813. [PMID: 38368084 DOI: 10.1016/j.carbpol.2024.121813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/24/2023] [Accepted: 01/09/2024] [Indexed: 02/19/2024]
Abstract
2,2,6,6-Tetramethylpiperidine-1-oxyl radical (TEMPO)-catalytic oxidation was applied to a water-insoluble α-(1 → 3)-glucan in water at pH 10 and room temperature (∼24 °C), with solid NaOCl·5H2O as the primary oxidant. Oxidation with NaOCl at 15 mmol/g gave a water-soluble TEMPO-oxidized product at a mass recovery ratio of 97 %. The carboxy content of the TEMPO-oxidized product was 5.3 mmol/g, which corresponds to a degree of C6-oxidation (DO) of 93 %. A new water-soluble α-(1 → 3)-polyglucuronic acid with a nearly homogeneous chemical structure was therefore quantitatively obtained. X-ray diffraction and solid-state 13C NMR spectroscopic analyses showed that the original α-(1 → 3)-glucan and its TEMPO-oxidized product with a carboxy content of 5.3 mmol/g had crystalline structures, whereas the oxidized products with DOs of 50 % and 66 % had almost disordered structures. The carboxy groups in the oxidized products were regioselectively methyl esterified with trimethylsilyl diazomethane, and analyzed by using size-exclusion chromatography with multi-angle laser-light scattering and refractive index detections. The results show that the original α-(1 → 3)-glucan and its oxidized products with DOs of 50 %, 66 %, and 93 % had weight-average degrees of polymerization of 671, 288, 54, and 45, respectively. Substantial depolymerization of the α-(1 → 3)-glucan molecules therefore occurred during catalytic oxidation, irrespective of the oxidation pH.
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Affiliation(s)
- Korawit Chitbanyong
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 113-8657 Tokyo, Japan.
| | - Gaoyuan Hou
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 113-8657 Tokyo, Japan.
| | - Izumi Shibata
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 113-8657 Tokyo, Japan.
| | - Miyuki Takeuchi
- Institute of Engineering Innovation, The University of Tokyo, Tokyo 113-8656, Japan.
| | - Satoshi Kimura
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 113-8657 Tokyo, Japan.
| | - Akira Isogai
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 113-8657 Tokyo, Japan.
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Wang F, Borjas A, Bonto A, Ursu AV, Dupont M, Roche J, Delattre C. Exploring Novel Applications for Hydrogels Derived from Modified Celluloses. Polymers (Basel) 2024; 16:530. [PMID: 38399908 PMCID: PMC10892153 DOI: 10.3390/polym16040530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/06/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
The valorization of lignocellulosic biomass by-products holds significant economic and ecological potential, considering their global overproduction. This paper introduces the fabrication of a novel wheat-straw-based hydrogel and a new microcellulose-based hydrogel through 2,2,6,6-tetramethylpiperidinyl-1-oxy (TEMPO) oxidation. In this study, Fourier transform infrared (FTIR) analysis was employed for the detection of carboxyl groups, neutralization titration was conducted using a conductivity meter, viscosity analysis was performed using a rheometer, and transmittance analysis was carried out using a spectrophotometer. Two novel hydrogels based on TEMPO oxidation have been developed. Among them, the bio-based hydrogel derived from oxidized wheat straw exhibited exceptional printability and injectability. We found that the oxidation degree of microcellulose reached 56-69%, and the oxidation degree of wheat straw reached 56-63%. The cross-linking of 4% oxidized wheat straw and calcium chloride was completed in 400 seconds, and the viscosity exceeded 100,000 Pa·s. In summary, we have successfully created low-cost hydrogels through the modification of wheat straw and microcellulose, transforming lignocellulosic biomass by-products into a sustainable source of polymers. This paper verifies the future applicability of biomass materials in 3D printing.
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Affiliation(s)
- Feiyang Wang
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Aldo Borjas
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- INRAE, Laboratoire de Génétique, Diversité et Écophysiologie des céréales (GDEC), Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Aldrin Bonto
- Department of Chemistry, De La Salle University, 2401 Taft, Avenue, Manila 0922, Philippines
| | - Alina Violeta Ursu
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Maxime Dupont
- INRAE, Laboratoire de Génétique, Diversité et Écophysiologie des céréales (GDEC), Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Jane Roche
- INRAE, Laboratoire de Génétique, Diversité et Écophysiologie des céréales (GDEC), Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Cédric Delattre
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- Institut Universitaire de France (IUF), 1 Rue Descartes, 75005 Paris, France
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Wang W, Liu J, Xu H, Zhang Y, Mao X, Huang WC. Characterization and comparison of carboxymethylation and TEMPO-mediated oxidation for polysaccharides modification. Int J Biol Macromol 2024; 256:128322. [PMID: 38000579 DOI: 10.1016/j.ijbiomac.2023.128322] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/18/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023]
Abstract
In this study, carboxymethylation and TEMPO-mediated oxidation were compared for their ability to introduce carboxyl groups to polysaccharides, using cellulose and chitin as model polysaccharides. The carboxyl group contents and changes in the molecular weight of carboxymethylated and TEMPO-oxidized cellulose/chitin were measured. The results revealed that carboxymethylation achieved higher carboxyl group contents, with values of 4.99 mmol/g for cellulose and 4.46 mmol/g for chitin, whereas for TEMPO-oxidized cellulose and chitin, the values were 1.64 mmol/g and 1.12 mmol/g, respectively. As a consequence of TEMPO-mediated oxidation, polysaccharides underwent degradation, leading to a decrease in the molecular weight of 42.46 % for oxidized cellulose and 64.5 % for oxidized chitin. Additionally, the crystallinity of carboxymethylated polysaccharides decreased with an increase in the carboxyl group contents, whereas that of TEMPO-oxidized polysaccharides remained unchanged. Furthermore, TEMPO-mediated oxidation selectively oxidized C6 primary hydroxyls, while carboxylmethylation converted all the hydroxyl groups on the polysaccharides.
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Affiliation(s)
- Wei Wang
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China; Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China; Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China
| | - Jiayuan Liu
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Huiwen Xu
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Yan Zhang
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Xiangzhao Mao
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China; Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China
| | - Wen-Can Huang
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China; Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China; Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China.
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4
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Synthesis and characterization of bioplastic curdlan esters with an introduced flexible carboxylic acid side chain. Carbohydr Res 2023; 523:108732. [PMID: 36571946 DOI: 10.1016/j.carres.2022.108732] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 11/23/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
Curdlan, a linear β-1,3-glucan, was reacted with glutaric anhydride and heptanoyl chloride to afford thermoplastic curdlan esters (CrdE(HepGlu)) with a carboxylic acid side chain. CrdE(HepGlu) with a degree of substitution of the glutaric acid monoester moiety (DSGlu) in the range of 0-0.58 and that of the heptanoate moiety (DSHep = 3 - DSGlu) was prepared. The esterification of the hydroxy groups in the glucan skeleton effectively caused the cleavage of the interchain hydrogen bonds of curdlan and enhanced the formability of CrdE(HepGlu). Moreover, the flexible carboxylic acid side chain moderately affected hydrogen bonding. Thus, the glass transition temperature of CrdE(HepGlu), estimated by differential scanning calorimetry, increased with increasing DSGlu. CrdE(HepGlu) with DSGlu between 0 and 0.58 displayed high solubility in organic solvents and thermoplasticity, enabling the formation of homogeneous and free-standing films by solution casting. The mechanical properties of CrdE(HepGlu) films were evaluated by a stress-strain test, which showed that Young's modulus and the maximum stress increased with increasing DSGlu. CrdE(HepGlu) exhibited higher mechanical strength than non-hydrogen-bonded curdlan triheptanoate and hydrogen-bonded curdlan alkylcarbamates, with thermal stability comparable to that of thermally stable curdlan esters. In addition, these properties can be regulated by controlling DSGlu.
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Mandal S, Nagi GK, Corcoran AA, Agrawal R, Dubey M, Hunt RW. Algal polysaccharides for 3D printing: A review. Carbohydr Polym 2022; 300:120267. [DOI: 10.1016/j.carbpol.2022.120267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/11/2022] [Accepted: 10/23/2022] [Indexed: 11/02/2022]
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Long X, Xie J, Xue B, Li X, Sun T. Effect of oxidative modification on physicochemical and functional properties of soybean polysaccharides. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shibakami M. Preparation of Paramylon Multifilament by Using the Viscose Method. ChemistrySelect 2022. [DOI: 10.1002/slct.202200494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Motonari Shibakami
- Biomedical Research Institute National Institute of Advanced Industrial Science and Technology (AIST) Central 6th, 1-1-1 Higashi Tsukuba Ibaraki 305-8566 Japan
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Feuzing F, Mbakidi JP, Marchal L, Bouquillon S, Leroy E. A review of paramylon processing routes from microalga biomass to non-derivatized and chemically modified products. Carbohydr Polym 2022; 288:119181. [PMID: 35450615 DOI: 10.1016/j.carbpol.2022.119181] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 01/04/2022] [Accepted: 01/21/2022] [Indexed: 11/02/2022]
Abstract
Paramylon is a linear β-1,3-glucan, similar to curdlan, produced as intracellular granules by the microalga Euglena gracilis, a highly versatile and robust strain, able to grow under various trophic conditions, with valorization of CO2, wastewaters, or food byproducts as nutrients. This review focuses in particular on the various processing routes leading to new potential paramylon based products. Due to its crystalline structure, involving triple helices stabilized by internal intermolecular hydrogen bonds, paramylon is neither water-soluble nor thermoplastic. The few solvents able to disrupt the triple helices, and to fully solubilize the polymer as random coils, allow non derivatizing shaping into films, fibers, and even nanofibers by a specific self-assembly mechanism. Chemical modification in homogeneous or heterogeneous conditions is also possible. The non-selective or regioselective substitution of the hydroxyl groups of glucosidic units leads to water-soluble ionic derivatives and thermoplastic paramylon esters with foreseen applications ranging from health to bioplastics.
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Affiliation(s)
- Frédérica Feuzing
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France; Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex, France
| | - Jean Pierre Mbakidi
- Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex, France
| | - Luc Marchal
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France
| | - Sandrine Bouquillon
- Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex, France
| | - Eric Leroy
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France.
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10
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Pandeirada CO, Merkx DWH, Janssen HG, Westphal Y, Schols HA. TEMPO/NaClO 2/NaOCl oxidation of arabinoxylans. Carbohydr Polym 2021; 259:117781. [PMID: 33674018 DOI: 10.1016/j.carbpol.2021.117781] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/04/2021] [Accepted: 02/04/2021] [Indexed: 01/05/2023]
Abstract
TEMPO-oxidation of neutral polysaccharides has been used to obtain polyuronides displaying improved functional properties. Although arabinoxylans (AX) from different sources may yield polyuronides with diverse properties due to their variable arabinose (Araf) substitution patterns, information of the TEMPO-oxidation of AX on its structure remains scarce. We oxidized AX using various TEMPO:NaClO2:NaOCl ratios. A TEMPO:NaClO2:NaOCl ratio of 1.0:2.6:0.4 per mol of Ara gave an oxidized-AX with high molecular weight, minimal effect on xylose appearance, and comprising charged side chains. Although NMR analyses unveiled arabinuronic acid (AraAf) as the only oxidation product in the oxidized-AX, accurate AraA quantification is still challenging. Linkage analysis showed that > 75 % of the β-(1→4)-xylan backbone remained single-substituted at position O-3 of Xyl similarly to native AX. TEMPO-oxidation of AX can be considered a promising approach to obtain arabinuronoxylans with a substitution pattern resembling its parental AX.
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Affiliation(s)
- Carolina O Pandeirada
- Wageningen University & Research, Laboratory of Food Chemistry, P.O. Box 17, 6700 AA Wageningen, the Netherlands
| | - Donny W H Merkx
- Wageningen University & Research, Laboratory of Food Chemistry, P.O. Box 17, 6700 AA Wageningen, the Netherlands; Unilever Foods Innovation Centre - Hive, Bronland 14, 6708 WH Wageningen, the Netherlands
| | - Hans-Gerd Janssen
- Unilever Foods Innovation Centre - Hive, Bronland 14, 6708 WH Wageningen, the Netherlands; Wageningen University & Research, Laboratory of Organic Chemistry, P.O. Box 8026, 6700 EG Wageningen, the Netherlands
| | - Yvonne Westphal
- Unilever Foods Innovation Centre - Hive, Bronland 14, 6708 WH Wageningen, the Netherlands
| | - Henk A Schols
- Wageningen University & Research, Laboratory of Food Chemistry, P.O. Box 17, 6700 AA Wageningen, the Netherlands.
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12
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Yan JK, Cai WD, Wang C, Yu YB, Zhang HN, Yang Y, Wang WH. Macromolecular behavior, structural characteristics and rheological properties of alkali-neutralization curdlan at different concentrations. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105785] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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13
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Guo Q, Bi D, Wu M, Yu B, Hu L, Liu C, Gu L, Zhu H, Lei A, Xu X, Wang J. Immune activation of murine RAW264.7 macrophages by sonicated and alkalized paramylon from Euglena gracilis. BMC Microbiol 2020; 20:171. [PMID: 32560675 PMCID: PMC7304158 DOI: 10.1186/s12866-020-01782-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 04/05/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Euglena is a new super health food resource that is rich in the natural polysaccharide paramylon, a linear β-1,3-glucan with various biological activities including activity on the immune system in different cell lines and animals. Despite these reports, the immune regulation mechanism of paramylon is still unclear. RESULTS We investigate the signaling pathways paramylon impacts in immune macrophages. In RAW264.7 macrophages, sonicated and alkalized paramylon oligomers up-regulated inducible nitric oxide synthase (iNOS) and increased secretion of nitric oxide (NO), interleukin (IL)-6 and tumor necrosis factor (TNF)-α, in a concentration-dependent manner. In addition, paramylon activated the nuclear factor-κB(NF-κB) and mitogen-activated protein kinase (MAPK) signaling pathways and inhibiting these pathways attenuated the paramylon-induced secretion of the above immune-mediators. CONCLUSIONS These results demonstrate that Euglena gracilis paramylon modulates the immune system via activation of the NF-κB and MAPK signaling pathways and thus has potential therapeutic benefits.
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Affiliation(s)
- Qingqing Guo
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Decheng Bi
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Mingcan Wu
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
- College of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, 521041, China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Boming Yu
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Lang Hu
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Chenchen Liu
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Liang Gu
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Hui Zhu
- College of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, 521041, China
| | - Anping Lei
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Xu Xu
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China.
| | - Jiangxin Wang
- Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China.
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Hao J, Wu F, Tang R, Sun Y, Liu D, Zhang Z. Preparation of 1,4-linked α-D-glucuronans from starch with 4-acetamide-TEMPO/NaClO 2/NaClO system. Int J Biol Macromol 2020; 151:740-746. [PMID: 32088227 DOI: 10.1016/j.ijbiomac.2020.02.211] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/17/2020] [Accepted: 02/19/2020] [Indexed: 12/27/2022]
Abstract
Oxidized starch (oxStarch) is a major derivative of starch. In present study, 4-acetamide-TEMPO system was firstly applied to prepare specifically oxidized starch, homogeneous 1,4-linked α-D-glucuronan. The impact of oxidant amount, 4-acetamide-TEMPO amount and reaction temperature on the properties of products were investigated. The product structures were characterized with 1H NMR for degree of oxidation (DO), SEC-MALS for MW, MS for analysis of oxidized oligosaccharides, and in-source fragmented MS for analysis of oxidized polysaccharides. The results showed that the DO of oxStarches increased, but their MWs decreased with the raise of oxidant amount; higher 4-acetamide-TEMPO amount provided higher efficiency of specific oxidation of starch, in which the product has higher DO and MW; no significant difference have been observed between the oxStarches oxidized at 4 and 25 °C, but significant degradation was observed at 50 °C. In each product, having a MW distribution, the portion with smaller size has higher DO. While some unspecific oxidation was still observed observed on the second hydroxyl groups of sugar ring in the following order of priority, position 3 > 2 > 1 > 0.
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Affiliation(s)
- Jie Hao
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Fangxia Wu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Rong Tang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yuanyuan Sun
- The Fourth People's Hospital of Jinan City, Shandong Province 250031, China
| | - Dehua Liu
- The Fourth People's Hospital of Jinan City, Shandong Province 250031, China.
| | - Zhenqing Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China.
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Yamanaka D, Takatsu K, Kimura M, Swamydas M, Ohnishi H, Umeyama T, Oyama F, Lionakis MS, Ohno N. Development of a novel β-1,6-glucan-specific detection system using functionally-modified recombinant endo-β-1,6-glucanase. J Biol Chem 2020; 295:5362-5376. [PMID: 32132174 PMCID: PMC7170528 DOI: 10.1074/jbc.ra119.011851] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 02/28/2020] [Indexed: 01/08/2023] Open
Abstract
β-1,3-d-Glucan is a ubiquitous glucose polymer produced by plants, bacteria, and most fungi. It has been used as a diagnostic tool in patients with invasive mycoses via a highly-sensitive reagent consisting of the blood coagulation system of horseshoe crab. However, no method is currently available for measuring β-1,6-glucan, another primary β-glucan structure of fungal polysaccharides. Herein, we describe the development of an economical and highly-sensitive and specific assay for β-1,6-glucan using a modified recombinant endo-β-1,6-glucanase having diminished glucan hydrolase activity. The purified β-1,6-glucanase derivative bound to the β-1,6-glucan pustulan with a KD of 16.4 nm We validated the specificity of this β-1,6-glucan probe by demonstrating its ability to detect cell wall β-1,6-glucan from both yeast and hyphal forms of the opportunistic fungal pathogen Candida albicans, without any detectable binding to glucan lacking the long β-1,6-glucan branch. We developed a sandwich ELISA-like assay with a low limit of quantification for pustulan (1.5 pg/ml), and we successfully employed this assay in the quantification of extracellular β-1,6-glucan released by >250 patient-derived strains of different Candida species (including Candida auris) in culture supernatant in vitro We also used this assay to measure β-1,6-glucan in vivo in the serum and in several organs in a mouse model of systemic candidiasis. Our work describes a reliable method for β-1,6-glucan detection, which may prove useful for the diagnosis of invasive fungal infections.
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Affiliation(s)
- Daisuke Yamanaka
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan; Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, NIAID, National Institutes of Health, Bethesda, Maryland 20892.
| | - Kazushiro Takatsu
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Masahiro Kimura
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo 192-0015, Japan; Research Fellow of Japan Society for the Promotion of Science (DC2), Koujimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Muthulekha Swamydas
- Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, NIAID, National Institutes of Health, Bethesda, Maryland 20892
| | - Hiroaki Ohnishi
- Department of Laboratory Medicine, Kyorin University School of Medicine, Mitaka, Tokyo 181-8611, Japan
| | - Takashi Umeyama
- Department of Chemotherapy and Mycoses, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Fumitaka Oyama
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo 192-0015, Japan
| | - Michail S Lionakis
- Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, NIAID, National Institutes of Health, Bethesda, Maryland 20892
| | - Naohito Ohno
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
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16
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Isogai A, Hänninen T, Fujisawa S, Saito T. Review: Catalytic oxidation of cellulose with nitroxyl radicals under aqueous conditions. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.07.007] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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17
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Shibakami M, Sohma M. Thermal, crystalline, and pressure-sensitive adhesive properties of paramylon monoesters derived from an euglenoid polysaccharide. Carbohydr Polym 2018; 200:239-247. [PMID: 30177162 DOI: 10.1016/j.carbpol.2018.08.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 07/31/2018] [Accepted: 08/02/2018] [Indexed: 10/28/2022]
Abstract
The thermal, crystalline, and pressure-sensitive adhesive properties of thermoplastic monoesters made from paramylon, a storage polysaccharide of Euglena gracilis, and a long-chain acyl chloride, were examined. Differential scanning calorimetry revealed that the thermal properties of these paramylon monoesters were dependent on the chain length and the average degree of substitution of the long-chain acyl group (av. DSlca). X-ray diffractometry revealed that the product solids with a myristoyl or palmitoyl group had a less ordered lateral acyl chain structure than those with a stearoyl group. Tackiness testing showed that the introduction of a myristoyl group into paramylon with an av. DSlca of ∼2.6 to ∼2.9 yielded palpable pressure-sensitive adhesion. A slight deviation of the chain length and/or av. DSlca from those of tacky paramylon myristate solids weakened or dispersed the tackiness. These results demonstrate the feasibility of using paramylon myristate solids with the av. DSlca in a specific range as a practical pressure-sensitive adhesive.
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Affiliation(s)
- Motonari Shibakami
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6th, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
| | - Mitsugu Sohma
- Advanced Coating Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Central 5th, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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18
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Selective synthesis of curdlan ω-carboxyamides by Staudinger ylide nucleophilic ring-opening. Carbohydr Polym 2018; 190:222-231. [DOI: 10.1016/j.carbpol.2018.02.074] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 02/21/2018] [Accepted: 02/22/2018] [Indexed: 01/01/2023]
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19
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Tang R, Hao J, Zong R, Wu F, Zeng Y, Zhang Z. Oxidation pattern of curdlan with TEMPO-mediated system. Carbohydr Polym 2018; 186:9-16. [DOI: 10.1016/j.carbpol.2017.12.080] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 12/31/2017] [Indexed: 10/18/2022]
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20
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Qiu WY, Wang K, Wang YY, Ding ZC, Wu LX, Cai WD, Yan JK. pH dependent green synthesis of gold nanoparticles by completely C6-carboxylated curdlan under high temperature and various pH conditions. Int J Biol Macromol 2018; 106:498-506. [DOI: 10.1016/j.ijbiomac.2017.08.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 07/19/2017] [Accepted: 08/02/2017] [Indexed: 12/01/2022]
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21
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Construction and characterization of nanosized curdlan sulfate/chitosan polyelectrolyte complex toward drug release of zidovudine. Carbohydr Polym 2017; 174:209-216. [DOI: 10.1016/j.carbpol.2017.06.082] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/13/2017] [Accepted: 06/20/2017] [Indexed: 11/18/2022]
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22
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Shibakami M. Thickening and water-absorbing agent made from euglenoid polysaccharide. Carbohydr Polym 2017; 173:451-464. [DOI: 10.1016/j.carbpol.2017.06.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/05/2017] [Accepted: 06/05/2017] [Indexed: 10/19/2022]
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23
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Pierre G, Punta C, Delattre C, Melone L, Dubessay P, Fiorati A, Pastori N, Galante YM, Michaud P. TEMPO-mediated oxidation of polysaccharides: An ongoing story. Carbohydr Polym 2017; 165:71-85. [PMID: 28363578 DOI: 10.1016/j.carbpol.2017.02.028] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 01/30/2017] [Accepted: 02/08/2017] [Indexed: 01/30/2023]
Abstract
The oxidation of natural polysaccharides by TEMPO has become by now an "old chemical reaction" which led to numerous studies mainly conducted on cellulose. This regioselective oxidation of primary alcohol groups of neutral polysaccharides has generated a new class of polyuronides not identified before in nature, even if the discovery of enzymes promoting an analogous oxidation has been more recently reported. Around the same time, the scientific community discovered the surprising biological and techno-functional properties of these anionic macromolecules with a high potential of application in numerous industrial fields. The objective of this review is to establish the state of the art of TEMPO chemistry applied to polysaccharide oxidation, its history, the resulting products, their applications and the associated modifying enzymes.
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Affiliation(s)
- Guillaume Pierre
- Université Clermont Auvergne, Université Blaise Pascal, Institut Pascal, BP 10448, F-63000, Clermont-Ferrand, France; CNRS, UMR 6602, IP, F-63178, Aubière, France.
| | - Carlo Punta
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta" and Local Unit INSTM, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy
| | - Cédric Delattre
- Université Clermont Auvergne, Université Blaise Pascal, Institut Pascal, BP 10448, F-63000, Clermont-Ferrand, France; CNRS, UMR 6602, IP, F-63178, Aubière, France
| | - Lucio Melone
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta" and Local Unit INSTM, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy; Università degli Studi e-Campus, Via Isimbardi 10, 22060, Novedrate, Como, Italy
| | - Pascal Dubessay
- Université Clermont Auvergne, Université Blaise Pascal, Institut Pascal, BP 10448, F-63000, Clermont-Ferrand, France; CNRS, UMR 6602, IP, F-63178, Aubière, France
| | - Andrea Fiorati
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta" and Local Unit INSTM, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy
| | - Nadia Pastori
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta" and Local Unit INSTM, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy
| | - Yves M Galante
- Istituto di Chimica del Riconoscimento Molecolare, CNR, Via Mario Bianco 9, 20131, Milano, Italy
| | - Philippe Michaud
- Université Clermont Auvergne, Université Blaise Pascal, Institut Pascal, BP 10448, F-63000, Clermont-Ferrand, France; CNRS, UMR 6602, IP, F-63178, Aubière, France
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Shibakami M, Sohma M. Synthesis and thermal properties of paramylon mixed esters and optical, mechanical, and crystal properties of their hot-pressed films. Carbohydr Polym 2017; 155:416-424. [DOI: 10.1016/j.carbpol.2016.08.093] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 11/16/2022]
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25
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26
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Shibakami M, Tsubouchi G, Sohma M, Hayashi M. Synthesis of nanofiber-formable carboxymethylated Euglena-derived β-1,3-glucan. Carbohydr Polym 2016; 152:468-478. [DOI: 10.1016/j.carbpol.2016.06.100] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/23/2016] [Accepted: 06/27/2016] [Indexed: 10/21/2022]
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27
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Russo R, Barsanti L, Evangelista V, Frassanito AM, Longo V, Pucci L, Penno G, Gualtieri P. Euglena gracilis paramylon activates human lymphocytes by upregulating pro-inflammatory factors. Food Sci Nutr 2016; 5:205-214. [PMID: 28265355 PMCID: PMC5332256 DOI: 10.1002/fsn3.383] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/08/2016] [Accepted: 04/08/2016] [Indexed: 01/09/2023] Open
Abstract
The aim of this study was to verify the activation details and products of human lymphomonocytes, stimulated by different β-glucans, that is Euglena paramylon, MacroGard®, and lipopolysaccharide. We investigated the gene expression of inflammation-related cytokines and mediators, transactivation of relevant transcription factors, and phagocytosis role in cell-glucan interactions, by means of RT-PCR, immunocytochemistry, and colorimetric assay. Our results show that sonicated and alkalized paramylon upregulates pro-inflammatory factors (NO, TNF-α, IL-6, and COX-2) in lymphomonocytes. A clear demonstration of this upregulation is the increased transactivation of NF-kB visualized by immunofluorescence microscopy. Phagocytosis assay showed that internalization is not a mandatory step for signaling cascade to be triggered, since immune activity is not present in the lymphomonocytes that have internalized paramylon granules and particulate MacroGard®. Moreover, the response of Euglena β-glucan-activated lymphomonocytes is much greater than that induced by commercially used β-glucans such as MacroGard®. Our in vitro results indicate that linear fibrous Euglena β-glucan, obtained by sonication and alkaline treatment can act as safe and effective coadjutant of the innate immune system response.
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Affiliation(s)
- Rossella Russo
- Istituto di Biologia e Biotecnologia Agraria, CNRPisaItaly
| | | | | | | | - Vincenzo Longo
- Istituto di Biologia e Biotecnologia Agraria, CNRPisaItaly
| | - Laura Pucci
- Istituto di Biologia e Biotecnologia Agraria, CNRPisaItaly
| | - Giuseppe Penno
- Dipartimento di Medicina Clinica e SperimentaleSezione Malattie MetabolicheUniversità di PisaPisaItaly
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28
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Zhang H, Lin X, Chin S, Grinstaff MW. Synthesis and Characterization of Poly(glyceric Acid Carbonate): A Degradable Analogue of Poly(acrylic Acid). J Am Chem Soc 2015; 137:12660-6. [DOI: 10.1021/jacs.5b07911] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Heng Zhang
- Departments of Chemistry
and Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Xinrong Lin
- Departments of Chemistry
and Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Stacy Chin
- Departments of Chemistry
and Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Mark W. Grinstaff
- Departments of Chemistry
and Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
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29
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Hiraoki R, Ono Y, Saito T, Isogai A. Molecular mass and molecular-mass distribution of TEMPO-oxidized celluloses and TEMPO-oxidized cellulose nanofibrils. Biomacromolecules 2015; 16:675-81. [PMID: 25584418 DOI: 10.1021/bm501857c] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Native wood cellulose was oxidized by 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidation, and the fibrous TEMPO-oxidized celluloses (TOCs) thus obtained were disintegrated in water to prepare TOC nanofibrils (TOCNs). The carboxyl groups of TOCs and TOCNs were methyl-esterified, and the methylated samples were dissolved in 8% LiCl/N,N-dimethylacetamide for size-exclusion chromatography/multiangle laser-light scattering (SEC-MALLS) analysis to obtain their molecular-mass (MM) values and MM distributions (MMDs). The results showed that remarkable depolymerization occurred in TOCs and TOCNs and depended on the oxidation and sonication conditions. Because single peaks without bimodal patterns were observed in the MMDs for all of the TOC and TOCN samples, depolymerization may have randomly occurred on whole cellulose molecules and oxidized cellulose molecules in the microfibrils during these treatments. Compared with the MM values obtained by SEC-MALLS, the intrinsic viscosities of TOCs dissolved in 0.5 M copper ethylenediamine solution provided lower MM values owing to depolymerization during the dissolution and postreduction processes.
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Affiliation(s)
- Ryoya Hiraoki
- Department of Biomaterials Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo , Tokyo 113-8657, Japan
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30
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(1→3)-β-d-Glucan nanofibers from paramylon via electrospinning. Carbohydr Polym 2014; 112:73-6. [DOI: 10.1016/j.carbpol.2014.05.066] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 04/24/2014] [Accepted: 05/22/2014] [Indexed: 11/20/2022]
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31
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Fabrication and characterization of cellulose nanofiber based thin-film nanofibrous composite membranes. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2013.11.055] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Watanabe E, Tamura N, Saito T, Habu N, Isogai A. Preparation of completely C6-carboxylated curdlan by catalytic oxidation with 4-acetamido-TEMPO. Carbohydr Polym 2014; 100:74-9. [DOI: 10.1016/j.carbpol.2012.11.094] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 10/20/2012] [Accepted: 11/21/2012] [Indexed: 10/27/2022]
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33
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Structural characteristics and antioxidant activities of different families of 4-acetamido-TEMPO-oxidised curdlan. Food Chem 2014; 143:530-5. [DOI: 10.1016/j.foodchem.2013.07.129] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 06/26/2013] [Accepted: 07/25/2013] [Indexed: 11/16/2022]
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34
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Tamaru SI, Tokunaga D, Hori K, Matsuda S, Shinkai S. Giant amino acids designed on the polysaccharide scaffold and their protein-like structural interconversion. Org Biomol Chem 2013; 12:815-22. [PMID: 24317299 DOI: 10.1039/c3ob41845f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amphoteric β-1,3-glucans possessing both amino groups and carboxylic acid groups on the C6 positions of glucose units were designed and synthesized from naturally produced curdlan. The amphoteric polysaccharides showed the isoelectric point and the pH responsive interconversion between the original triple helix and single-stranded random structures. Since the pH dependences are comparable to the typical properties of proteins, the polysaccharides can be considered as a new class of giant amino acids. Utilizing the pH responsiveness, pH-controlled catch-and-release has been realized for cationic peptides or anionic DNA. We believe that the amphoteric polysaccharide can act as a new potential polymer to construct stimuli-responsive smart materials on the basis of the polysaccharide scaffold.
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Affiliation(s)
- Shun-ichi Tamaru
- Department of Nanoscience Sojo University 4-22-1 Ikeda, Nishi-ku, Kumamoto 860-0082, Japan.
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35
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Milanovic J, Schiehser S, Milanovic P, Potthast A, Kostic M. Molecular weight distribution and functional group profiles of TEMPO-oxidized lyocell fibers. Carbohydr Polym 2013; 98:444-50. [PMID: 23987366 DOI: 10.1016/j.carbpol.2013.06.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 05/28/2013] [Accepted: 06/18/2013] [Indexed: 11/28/2022]
Abstract
The effects of TEMPO-mediated oxidation, performed with NaClO, a catalytic amount of NaBr, and 2,2',6,6'-tetramethylpiperidine-1-oxy radical (TEMPO), were studied on lyocell fibers by means of GPC using multiple detection and group-selective fluorescence labeling according to the CCOA and FDAM methodology. The applied method determines functional group content as a sum parameter, as well as functional group profiles in relation to the molecular weight of the cellulose fibers. Both the CHO and COOH profiles, as well as molecular weight alterations, were analyzed. A significant decrease in the average molecular weight was obtained during the first hour of TEMPO-mediated oxidation, but prolonged oxidation time resulted in no strong additional chain scission. Significant amounts of COOH groups were introduced in the high molecular weight fractions by the oxidation with higher concentrations of NaClO (2.42-9.67 mmol NaClO/g fiber) after modification times of 1h or longer.
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Affiliation(s)
- Jovana Milanovic
- Department of Textile Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
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36
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Stability of (1→3)-β-polyglucuronic acid under various pH and temperature conditions. Carbohydr Polym 2013; 97:413-20. [DOI: 10.1016/j.carbpol.2013.05.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 05/04/2013] [Accepted: 05/09/2013] [Indexed: 11/22/2022]
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37
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Watanabe E, Habu N, Isogai A. Biodegradation of (1→3)-β-polyglucuronate prepared by TEMPO-mediated oxidation. Carbohydr Polym 2013; 96:314-9. [DOI: 10.1016/j.carbpol.2013.03.081] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Revised: 03/23/2013] [Accepted: 03/25/2013] [Indexed: 11/29/2022]
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38
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Yan JK, Cai PF, Cao XQ, Ma HL, Zhang Q, Hu NZ, Zhao YZ. Green synthesis of silver nanoparticles using 4-acetamido-TEMPO-oxidized curdlan. Carbohydr Polym 2013; 97:391-7. [PMID: 23911462 DOI: 10.1016/j.carbpol.2013.05.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 04/24/2013] [Accepted: 05/20/2013] [Indexed: 10/26/2022]
Abstract
A facile, simple, and eco-friendly method using 4-acetamido-2,2,6,6-tetramethypiperidine-1-oxyl radical-oxidized curdlan (Oc) as both reducing and stabilizing agents was developed for the fabrication of silver nanoparticles (AgNPs) from silver nitrate (AgNO₃). The structure, morphology, and particle size of the as-prepared AgNPs were investigated by ultraviolet-visible spectroscopy, transmission electron microscopy, energy dispersive X-ray spectrometry, X-ray diffraction, and dynamic laser light scattering. The well-dispersed AgNPs were sphere like with a mean diameter of 15 nm. Their formation was dependent on reaction duration, reaction temperature, Oc concentration, and AgNO₃ concentration. Fourier transform-infrared and Raman spectra demonstrated that the as-prepared AgNPs can readily bind covalently with the carboxylate groups of Oc through the strong monodentate interaction in the reaction medium.
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Affiliation(s)
- Jing-Kun Yan
- School of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China.
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39
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Shibakami M, Tsubouchi G, Nakamura M, Hayashi M. Preparation of carboxylic acid-bearing polysaccharide nanofiber made from euglenoid β-1,3-glucans. Carbohydr Polym 2013; 98:95-101. [PMID: 23987321 DOI: 10.1016/j.carbpol.2013.05.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 05/11/2013] [Accepted: 05/14/2013] [Indexed: 11/19/2022]
Abstract
This paper introduces a new strategy for creating surface modified polysaccharide nanofibers. To demonstrate proof of principle, the synthesis, structure, and self-assembly behavior of a carboxylic acid-bearing polysaccharide made from paramylon (β-1,3-glucan) and succinic anhydride were investigated. Examination by a combination of NMR, FT-IR, and SEC-MALLS confirmed that successful preparation of the desired succinylated paramylon without significant depolymerization. NMR, SEC-MALLS, visible absorption and CD spectroscopic analyses indicated that the paramylon derivative forms the triplex structure in solutions. SEM observation revealed that succinylated paramylon forms a nanofiber that has carboxylic acid on the surface.
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Affiliation(s)
- Motonari Shibakami
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6th, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
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40
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Stetco IA, Merschrod S EF. Supramolecular structure and anomer-selective formation of polyglucuronic acid. POLYM INT 2013. [DOI: 10.1002/pi.4367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- I. Alina Stetco
- Department of Chemistry; Memorial University of Newfoundland; St John's; NL; A1B3X7; Canada
| | - Erika F Merschrod S
- Department of Chemistry; Memorial University of Newfoundland; St John's; NL; A1B3X7; Canada
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41
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Yixue S, Bin C, Yuan G, Chaoxi W, Lingmin Z, Peng C, Xiaoying W, Shunqing T. Modification of agarose with carboxylation and grafting dopamine for promotion of its cell-adhesiveness. Carbohydr Polym 2013; 92:2245-51. [DOI: 10.1016/j.carbpol.2012.12.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2012] [Revised: 11/28/2012] [Accepted: 12/03/2012] [Indexed: 10/27/2022]
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42
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Mao JW, Yin J, Ge Q, Jiang ZL, Gong JY. In vitro antioxidant activities of polysaccharides extracted from Moso Bamboo-Leaf. Int J Biol Macromol 2013; 55:1-5. [PMID: 23305703 DOI: 10.1016/j.ijbiomac.2012.12.027] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 11/19/2012] [Accepted: 12/14/2012] [Indexed: 11/19/2022]
Abstract
The objective of this study was to evaluate in vitro antioxidant capacities of polysaccharides extracted from Moso Bamboo-Leaf (BLP). The molecular weight of the polysaccharides were obtained by SEC-LLS and their molecular masses were 13.4×10(4)Da, 2.8×10(4)Da and 1.9×10(4)Da, respectively. Available data obtained with in vitro models suggested WB1 (precipitated by 30% ethanol) showed significant inhibitory effects on superoxide radical, hydroxyl radical, DPPH radical and ferrous metal-chelating capacities. These results clearly establish the possibility that polysaccharides extracted from Moso Bamboo-Leaf could be effectively employed as ingredient in health or functional food, to alleviate oxidative stress.
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Affiliation(s)
- Jian-wei Mao
- Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, PR China
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43
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Huang J, Chen WW, Hu S, Gong JY, Lai HW, Liu P, Mei LH, Mao JW. Biochemical activities of 6-carboxy β-chitin derived from squid pens. Carbohydr Polym 2013; 91:191-7. [DOI: 10.1016/j.carbpol.2012.08.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 08/04/2012] [Accepted: 08/07/2012] [Indexed: 11/15/2022]
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44
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Shibakami M, Tsubouchi G, Nakamura M, Hayashi M. Polysaccharide nanofiber made from euglenoid alga. Carbohydr Polym 2012; 93:499-505. [PMID: 23499089 DOI: 10.1016/j.carbpol.2012.12.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Revised: 12/07/2012] [Accepted: 12/12/2012] [Indexed: 12/18/2022]
Abstract
We have fabricated a polysaccharide nanofiber made from paramylon (β-1,3-glucan), a storage polysaccharide stored as a micrometer-sized particle in the cell of euglenoid alga. Preparation of this nanofiber primarily hinges on the bottom-up approach. First, paramylon, which is originally present in the form of a bundle of nanofibers in a particle, was fibrillated to a randomly coiled polymer by dissolving the particle in a 1.0-mol/L NaOH aqueous solution. Second, the randomly coiled polymer was allowed to self-assemble into a triplex as the NaOH concentration was reduced to 0.25-0.20mol/L. Third, a 20-nm-width nanofiber made from the triplex emerged in the solution when the NaOH concentration was reduced to approximately 0.20mol/L.
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Affiliation(s)
- Motonari Shibakami
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, Central 6th, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
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Effects of degree of carboxymethylation on physicochemical and biological properties of pachyman. Int J Biol Macromol 2012; 51:1052-6. [DOI: 10.1016/j.ijbiomac.2012.08.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 08/03/2012] [Accepted: 08/19/2012] [Indexed: 11/23/2022]
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Xiang Y, Xu X, Li J. Chemical properties and antioxidant activity of exopolysaccharides fractions from mycelial culture of Inonotus obliquus in a ground corn stover medium. Food Chem 2012; 134:1899-905. [DOI: 10.1016/j.foodchem.2012.03.121] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 03/12/2012] [Accepted: 03/24/2012] [Indexed: 10/28/2022]
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Milanovic J, Kostic M, Milanovic P, Skundric P. Influence of TEMPO-Mediated Oxidation on Properties of Hemp Fibers. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300713x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jovana Milanovic
- Department of Textile Engineering,
Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Mirjana Kostic
- Department of Textile Engineering,
Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Predrag Milanovic
- Department of Construction Materials,
Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Petar Skundric
- Department of Textile Engineering,
Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
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Shibakami M, Sohma M, Hayashi M. Fabrication of doughnut-shaped particles from spheroidal paramylon granules of Euglena gracilis using acetylation reaction. Carbohydr Polym 2012; 87:452-456. [DOI: 10.1016/j.carbpol.2011.08.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 07/20/2011] [Accepted: 08/03/2011] [Indexed: 12/27/2022]
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Delattre C, Chaisemartin L, Favre-Mercuret M, Berthon J, Rios L. Biological effect of β-(1,3)-polyglucuronic acid sodium salt on lipid storage and adipocytes differentiation. Carbohydr Polym 2012; 87:775-783. [DOI: 10.1016/j.carbpol.2011.08.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Revised: 08/13/2011] [Accepted: 08/21/2011] [Indexed: 11/24/2022]
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