1
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Yuan Q, Liang R, Lv K, Shi X, Leng J, Liu Y, Xiao J, Zhang L, Zhao L. Structural characterization of a Chlorella heteropolysaccharide by analyzing its depolymerized product and finding an inducer of human dendritic cell maturation. Carbohydr Polym 2024; 333:122000. [PMID: 38494209 DOI: 10.1016/j.carbpol.2024.122000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/19/2024]
Abstract
Chlorella polysaccharides have been gaining increasing attention because of their high yield from dried Chlorella powder and their remarkable immunomodulatory activity. In this study, the major polysaccharide fraction, CPP-3a, in Chlorella pyrenoidosa, was isolated, and its detailed structure was investigated by analyzing the low-molecular-weight product prepared via free radical depolymerization. The results indicated that CPP-3a with a molecular weight of 195.2 kDa was formed by →2)-α-L-Araf-(1→, →2)-α-D-Rhap-(1→, →5)-α-L-Araf-(1→, →3)-β-D-Glcp-(1→, →4)-α-D-Glcp-(1→, →4)-α-D-GlcpA-(1→, →2,3)-α-D-Manp-(1→, →3,4)-α-D-Manp-(1→, →3,4)-β-D-Galp-(1→, →3,6)-β-D-Galp-(1→, and →2,3,6)-α-D-Galp-(1→ residues, branched at C2, C3, C4, or C6 of α/β-D-Galp and α-D-Manp, and terminated by α/β-L-Araf, α-L-Arap, α-D-Galp, and β-D-Glcp. Biological assays showed that CPP-3a significantly altered the dendritic morphology of immature dendritic cells (DCs). Enhanced CD80, CD86, and MHC I expression on the cell surface and decreased phagocytic ability indicated that CPP-3a could induce the maturation of DCs. Furthermore, CPP-3a-stimulated DCs not only stimulated the proliferation of allogeneic naïve CD4+ T cells and the secretion of IFN-γ, but also directly stimulated the activation and proliferation of CD8+ T cells through cross-antigen presentation. These findings indicate that CPP-3a can promote human DC maturation and T-cell stimulation and may be a novel DC maturation inducer with potential developmental value in DC immunotherapy.
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Affiliation(s)
- Qingxia Yuan
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Rongyi Liang
- Guangxi Key Laboratory of Translational Medicine for Treating High-Incidence Infectious Diseases with Integrative Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Kunling Lv
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Xiaohuo Shi
- Instrumentation and Service Center for Molecular Sciences, Westlake University, Hangzhou 310024, China
| | - Jing Leng
- Guangxi Key Laboratory of Translational Medicine for Treating High-Incidence Infectious Diseases with Integrative Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Yonghong Liu
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Jian Xiao
- Guangxi Key Laboratory of Translational Medicine for Treating High-Incidence Infectious Diseases with Integrative Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China.
| | - Lifeng Zhang
- Guangxi Key Laboratory of Translational Medicine for Treating High-Incidence Infectious Diseases with Integrative Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China.
| | - Longyan Zhao
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China.
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2
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Song X, Man J, Qiu Y, Wang J, Liu J, Li R, Zhang Y, Li J, Li J, Chen Y. High-density zwitterionic polymer brushes exhibit robust lubrication properties and high antithrombotic efficacy in blood-contacting medical devices. Acta Biomater 2024; 178:111-123. [PMID: 38423351 DOI: 10.1016/j.actbio.2024.02.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Abstract
High-performance catheters are essential for interventional surgeries, requiring reliable anti-adhesive and lubricated surfaces. This article develops a strategy for constructing high-density sulfobetaine zwitterionic polymer brushes on the surface of catheters, utilizing dopamine and sodium alginate as the primary intermediate layers, where dopamine provides mussel-protein-like adhesion to anchor the polymer brushes to the catheter surface. Hydroxyl-rich sodium alginate increases the number of grafting sites and improves the grafting mass by more than 4 times. The developed high-density zwitterionic polymer brushes achieve long-lasting and effective lubricity (μ<0.0078) and are implanted in rabbits for four hours without bio-adhesion and thrombosis in the absence of anticoagulants such as heparin. Experiments and molecular dynamics simulations demonstrate that graft mass plays a decisive role in the lubricity and anti-adhesion of polymer brushes, and it is proposed to predict the anti-adhesion of polymer brushes by their lubricity to avoid costly and time-consuming bioassays during the development of amphoteric polymer brushes. A quantitative influence of hydration in the anti-adhesion properties of amphiphilic polymer brushes is also revealed. Thus, this study provides a new approach to safe, long-lasting lubrication and anticoagulant surface modification for medical devices in contact with blood. STATEMENT OF SIGNIFICANCE: High friction and bioadhesion on medical device surfaces can pose a significant risk to patients. In response, we have developed a safer, simpler, and more application-specific surface modification strategy that addresses both the lubrication and anti-bioadhesion needs of medical device surfaces. We used dopamine and sodium alginate as intermediate layers to drastically increase the grafting density of the zwitterionic brushes and enabled the modified surfaces to have an extremely low coefficient of friction (μ = 0.0078) and to remain non-bioadhesive for 4 hours in vivo. Furthermore, we used molecular dynamics simulations to gain insight into the mechanisms behind the superior anti-adhesion properties of the high-density polymer brushes. Our work contributes to the development and application of surface-modified coatings.
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Affiliation(s)
- Xinzhong Song
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Jia Man
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China.
| | - Yinghua Qiu
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Jiali Wang
- Qilu Hospital of Shandong University, Jinan 250012, PR China
| | - Jianing Liu
- Qilu Hospital of Shandong University, Jinan 250012, PR China
| | - Ruijian Li
- Qilu Hospital of Shandong University, Jinan 250012, PR China
| | - Yongqi Zhang
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Jianyong Li
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Jianfeng Li
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Yuguo Chen
- Qilu Hospital of Shandong University, Jinan 250012, PR China
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3
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Zhu B, Ma C, You L. Degradation Mechanisms of Six Typical Glucosidic Bonds of Disaccharides Induced by Free Radicals. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:5439-5451. [PMID: 38412221 DOI: 10.1021/acs.jafc.3c09344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Increasing hydrogen peroxide (H2O2)-based systems have been developed to degrade various polysaccharides due to the presence of highly reactive free radicals, but published degradation mechanisms are still limited. Therefore, this study aimed to clarify the degradation mechanism of six typical glucosidic bonds from different disaccharides in an ultraviolet (UV)/H2O2 system. The results showed that the H2O2 concentration, disaccharide concentration, and radiation intensity were important factors affecting pseudo-first-order kinetic constants. Hydroxyl radical, superoxide radical, and UV alone contributed 58.37, 18.52, and 19.17% to degradation, respectively. The apparent degradation rates ranked in the order of cellobiose ≈ lactose > trehalose ≈ isomaltose > turanose > sucrose ≈ maltose. The reaction pathways were then deduced after identifying their degradation products. According to quantum chemical calculations, the cleavage of α-glycosidic bonds was more kinetically unfavorable than that of β-glycosidic bonds. Additionally, the order of apparent degradation rates depended on the energy barriers for the formation of disaccharide-based alkoxyl radicals. Moreover, energy barriers for homolytic scissions of glucosidic C1-O or C7-O sites of these alkoxyl radicals ranked in the sequence: α-(1 → 2) ≈ α-(1 → 3) < α-(1 → 4) < β-(1 → 4) < α-(1 → 6) < α-(1 → 1) glucosidic bonds. This study helps to explain the mechanisms of carbohydrate degradation by free radicals.
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Affiliation(s)
- Biyang Zhu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Cong Ma
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Lijun You
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
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4
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Wang K, Wang W, Zhang R, Liu Y, Hou C, Guo Y, Zhang C. Preparation of low molecular weight chondroitin sulfate from different sources by H 2O 2/ascorbic acid degradation and its degradation mechanism. Food Chem 2024; 434:137392. [PMID: 37725843 DOI: 10.1016/j.foodchem.2023.137392] [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: 05/22/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/21/2023]
Abstract
Low molecular weight chondroitin sulfate (LMCS) has attention for enhanced bioavailability and bioactivity compared to native CS. We optimized H2O2/ ascorbic acid (Vc) degradation conditions to prepare LMCS from chicken, bovine, and shark cartilages. Degradation kinetics models and chemical composition data of LMCS showed the GlcA residues of chondroitin-4-sulfate (CSA) may be preferentially attacked. Nuclear magnetic resonance (NMR) spectroscopy and high-performance liquid chromatography-electrospray mass spectrometry (HPLC-MS) indicated that the CH of GlcA in CS was broken through a hydrogen abstraction reaction to break the β-(1 → 3) bond and form the hexendioic acid product. Standard density functional theory (DFT) calculations indicated that the energy required for the hydrogen abstraction from the C1-H bond in GlcA was lower than that of GalNAc. Molecular dynamics (MD) showed that CSA was more likely to interact with hydroxyl radicals (·OH) than non-sulfated chondroitin (CSO) and chondroitin-6-sulfate (CSC). These results provide guidance for producing LMCS.
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Affiliation(s)
- Kangyu Wang
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Wenfang Wang
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Ruishu Zhang
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yue Liu
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Chengli Hou
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yujie Guo
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Chunhui Zhang
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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5
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Patel PJ, Patel SG, Upadhyay DB, Ravi L, Dhanasekaran A, Patel HM. An efficient, catalyst-free and aqueous ethanol-mediated synthesis of 5-((2-aminothiazol-5-yl)(phenyl)methyl)-6-hydroxypyrimidine-2,4(1 H,3 H)-dione derivatives and their antioxidant activity. RSC Adv 2023; 13:24466-24473. [PMID: 37593670 PMCID: PMC10427891 DOI: 10.1039/d3ra03998f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/07/2023] [Indexed: 08/19/2023] Open
Abstract
In this study, we effectively developed a catalyst-free multicomponent synthesis of 5-((2-aminothiazol-5-yl)(phenyl)methyl)-6-hydroxypyrimidine-2,4(1H,3H)-dione derivatives employing 2-aminothiazole, N',N'-dimethyl barbituric acid/barbituric acid and different aldehydes at 80 °C in an aqueous ethanol medium (1 : 1) using group-assisted purification (GAP) chemistry. The essential characteristics of this methodology include superior green credential parameters, metal-free multicomponent synthesis, faster reaction times, greater product yields, simple product purification without column chromatography and higher product yields. All of the synthesized compounds were analyzed against the HepG2 cell line. Compounds 4j and 4k shows good anti-proliferative effects on HepG2 cells. Furthermore, the ABTS and DPPH scavenging assays were used to determine the antioxidant activity of all compounds (4a-r). In both ABTS and DPPH radical scavenging assays, compounds 4e, 4i, 4j, 4o and 4r exhibit excellent potency compared to the standard ascorbic acid.
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Affiliation(s)
- Paras J Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120 Gujarat India
| | - Subham G Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120 Gujarat India
| | - Dipti B Upadhyay
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120 Gujarat India
| | - Logeswari Ravi
- Centre for Biotechnology, Anna University Chennai Tamil Nadu India
| | | | - Hitendra M Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120 Gujarat India
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Liu XQ, Yan XH, Liang J, Kuang HX, Xia YG. Microwave assisted free radical degradation of Schisandra polysaccharides: Optimization, identification and application. Int J Biol Macromol 2023; 237:124107. [PMID: 36958456 DOI: 10.1016/j.ijbiomac.2023.124107] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/02/2023] [Accepted: 03/16/2023] [Indexed: 03/25/2023]
Abstract
In order to establish structural-fingerprinting of polysaccharides for improvement of quality assessment, a sample preparation method based on microwave assisted free radical degradation (MFRD) of plant polysaccharides was proposed to produce oligosaccharides and small Mw polysaccharides. As a case study of Schisandra chinensis and S. sphenanthera fruit polysaccharides (SCP and SSP), the MFRD condition (i.e., 100 °C, 30 s and 80 W) was confirmed to be optimal. The potential structures of the MFRD products of SCP and SSP were further discussed by combinations of HILIC-ESI--QTOF-MSE and HILIC-ESI--Q-OT-IT-MS/MS. As followed, multivariable statistical analysis shows a clear separation of SCP and the SSP in PCA and OPLS-DA plots based HILIC-ESI--QTOF-MSE data. The VIP plot unveils several key Q-markers (e.g., peaks 3, 8, 9, 10, 15, 25, 26, 28, 29 and 30) with significant differences and stable emergences. Furthermore, a low-polymerization compositional fingerprinting was successfully constructed for SCP and SSP using a high-performance anion-exchange chromatography with pulsed amperometric detection. Compared to the conventional sample preparation methods, the MFRD took only a few thousandth of the time to accomplish degradations of plant polysaccharides. It significantly improves sample preparations and is generally applicable to various polysaccharide samples.
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Affiliation(s)
- Xue-Qing Liu
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, 24 Heping Road, Harbin 150040, PR China
| | - Xiao-Hui Yan
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, 24 Heping Road, Harbin 150040, PR China
| | - Jun Liang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, 24 Heping Road, Harbin 150040, PR China
| | - Hai-Xue Kuang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, 24 Heping Road, Harbin 150040, PR China
| | - Yong-Gang Xia
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, 24 Heping Road, Harbin 150040, PR China.
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Zhu B, Chen Y, Chang S, Qiu H, You L. Degradation kinetic models and mechanism of isomaltooligosaccharides by hydroxyl radicals in UV/H2O2 system. Carbohydr Polym 2023; 300:120240. [DOI: 10.1016/j.carbpol.2022.120240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 10/09/2022] [Accepted: 10/14/2022] [Indexed: 11/02/2022]
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8
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New Schiff bases based on isatin and (thio)/carbohydrazone: preparation, experimental–theoretical spectroscopic characterization, and DFT approach to antioxidant characteristics. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04908-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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9
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Tian W, You Y, Sun X, Wang L, Wang L, Wang S, Ai C, Song S. H2O2-TiO2 photocatalytic degradation of chondroitin sulfate and in vivo absorption and excertion of its product. Carbohydr Polym 2022; 301:120295. [DOI: 10.1016/j.carbpol.2022.120295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/11/2022] [Accepted: 10/30/2022] [Indexed: 11/06/2022]
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10
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Chen Y, Huang W, Chen Y, Wu M, Jia R, You L. Influence of Molecular Weight of Polysaccharides from Laminaria japonica to LJP-Based Hydrogels: Anti-Inflammatory Activity in the Wound Healing Process. Molecules 2022; 27:6915. [PMID: 36296508 PMCID: PMC9607980 DOI: 10.3390/molecules27206915] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 12/03/2022] Open
Abstract
In this study, polysaccharides from Laminaria japonica (LJP) were produced by the treatment of ultraviolet/hydrogen peroxide (UV/H2O2) degradation into different molecular weights. Then, the degraded LJP were used to prepare LJP/chitosan/PVA hydrogel wound dressings. As the molecular weight of LJP decreased from 315 kDa to 20 kDa, the swelling ratio of the LJP-based hydrogels rose from 14.38 ± 0.60 to 20.47 ± 0.42 folds of the original weight. However, the mechanical properties of LJP-based hydrogels slightly decreased. With the extension of the UV/H2O2 degradation time, the molecular weight of LJP gradually decreased, and the anti-inflammatory activities of LJP-based hydrogels gradually increased. LJP that were degraded for 60 min (60-gel) showed the best inhibition effects on proinflammatory cytokines, while the contents of TNF-α, IL-6, and IL-1β decreased by 57.33%, 44.80%, and 67.72%, respectively, compared with the Model group. The above results suggested that low Mw LJP-based hydrogels showed great potential for a wound dressing application.
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Affiliation(s)
| | | | | | | | | | - Lijun You
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
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11
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Synthesis, antimicrobial and antioxidant evaluation with in silico studies of new thiazole Schiff base derivatives. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131465] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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12
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Avila-Sierra A, Vicaria JM, Lechuga M, Martínez-Gallegos JF, Olivares-Arias V, Medina-Rodríguez AC, Jiménez-Robles R, Jurado-Alameda E. Insights into the optimisation of the Clean-In-Place technique: Cleaning, disinfection, and reduced environmental impact using ozone-based formulations. FOOD AND BIOPRODUCTS PROCESSING 2021. [DOI: 10.1016/j.fbp.2021.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Fermented ginseng leaf enriched with rare ginsenosides relieves exercise-induced fatigue via regulating metabolites of muscular interstitial fluid, satellite cells-mediated muscle repair and gut microbiota. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104509] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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14
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Chen X, Sun-Waterhouse D, Yao W, Li X, Zhao M, You L. Free radical-mediated degradation of polysaccharides: Mechanism of free radical formation and degradation, influence factors and product properties. Food Chem 2021; 365:130524. [PMID: 34252626 DOI: 10.1016/j.foodchem.2021.130524] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 06/14/2021] [Accepted: 07/01/2021] [Indexed: 10/20/2022]
Abstract
Increasing studies focus on the degradation of polysaccharides by free radicals. The review mainly provides an overview of degradation of polysaccharides by free radicals generated from hydrogen peroxide (H2O2). Evidence suggests that free radicals generated from H2O2 can be generated by various mechanisms. It broke glycosidic bonds mainly through hydrogen abstraction, causing the degradation of polysaccharides. Its degradation efficiency is affected by many factors, such as the concentration of polysaccharides and H2O2, temperature and pH. In addition, free radical degradation could change the physicochemical and structural properties of polysaccharides, such as water solubility, thermal stability, molecular weight, monosaccharide composition, apparent morphology, and chain conformation, but it had little effects on the primary structure of polysaccharides. Besides, free radical degradation could also improve the bioactivities of polysaccharides, including antioxidant, antitumor and anticoagulant activities.
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Affiliation(s)
- Xiaoyong Chen
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China
| | - Dongxiao Sun-Waterhouse
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; School of Chemical Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Wanzi Yao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China
| | - Xiong Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China
| | - Mouming Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China
| | - Lijun You
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China.
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15
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Chen X, You L, Ma Y, Zhao Z, Kulikouskaya V. Influence of UV/H 2O 2 treatment on polysaccharides from Sargassum fusiforme: Physicochemical properties and RAW 264.7 cells responses. Food Chem Toxicol 2021; 153:112246. [PMID: 33940104 DOI: 10.1016/j.fct.2021.112246] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/16/2021] [Accepted: 04/26/2021] [Indexed: 01/04/2023]
Abstract
There are few studies on seaweed polysaccharides with UV/H2O2 treatment, so the aim of this study was to evaluate the effects of UV/H2O2 treatment on physicochemical properties and RAW 264.7 cells responses of polysaccharides from Sargassum fusiforme (PSF). Results showed that the contents of reducing sugar and sulfate in PSF with UV/H2O2 treatment for 2 h increased by 202.86% and 31.77%, respectively, and the contents of total sugar, protein and uronic acid decreased by 14.29%, 57.11% and 43.18% compared with those of original polysaccharides. In addition, UV/H2O2 treatment did not change the monosaccharide types of original polysaccharides, but it could change its monosaccharide composition and surface morphology. Besides, polysaccharides after UV/H2O2 treatment for 0.5-2 h had lower toxicity than original polysaccharides in RAW 264.7 cells. Typically, PSF with UV/H2O2 treatment for 2 h (PSF-T2) could effectively inhibit pro-inflammatory molecules production (including NO, IL-1β, IL-6 and TNF-α), and down-regulate related genes expression (including Tlr4, Irak, Il-1β, Il-6, Il-12 and Tnf-α). Therefore, UV/H2O2 treatment is a potential way to prepare polysaccharide with better anti-inflammatory activity.
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Affiliation(s)
- Xiaoyong Chen
- School of Food Science and Engineering, South China University of Technology, Guang Zhou, 510640, China; Overseas Expertise Introduction Center for Food Nutrition and Human Health (111 Center), Guang Zhou, China
| | - Lijun You
- School of Food Science and Engineering, South China University of Technology, Guang Zhou, 510640, China; Overseas Expertise Introduction Center for Food Nutrition and Human Health (111 Center), Guang Zhou, China.
| | - Yongxuan Ma
- Guangzhou Liheng Clinical Nutrition Co. Ltd., Guangzhou, 510610, Guangdong, China
| | - Zhengang Zhao
- School of Food Science and Engineering, South China University of Technology, Guang Zhou, 510640, China; Overseas Expertise Introduction Center for Food Nutrition and Human Health (111 Center), Guang Zhou, China
| | - Viktoryia Kulikouskaya
- Institute of Chemistry of New Materials, National Academy of Sciences of Belarus. 36F. Skaryna str., Minsk, 220141, Belarus
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Iacob AT, Drăgan M, Ionescu OM, Profire L, Ficai A, Andronescu E, Confederat LG, Lupașcu D. An Overview of Biopolymeric Electrospun Nanofibers Based on Polysaccharides for Wound Healing Management. Pharmaceutics 2020; 12:E983. [PMID: 33080849 PMCID: PMC7589858 DOI: 10.3390/pharmaceutics12100983] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/13/2022] Open
Abstract
Currently, despite the thoroughgoing scientific research carried out in the area of wound healing management, the treatment of skin injuries, regardless of etiology remains a big provocation for health care professionals. An optimal wound dressing should be nontoxic, non-adherent, non-allergenic, should also maintain a humid medium at the wound interfacing, and be easily removed without trauma. For the development of functional and bioactive dressings, they must meet different conditions such as: The ability to remove excess exudates, to allow gaseous interchange, to behave as a barrier to microbes and to external physical or chemical aggressions, and at the same time to have the capacity of promoting the process of healing by stimulating other intricate processes such as differentiation, cell adhesion, and proliferation. Over the past several years, various types of wound dressings including hydrogels, hydrocolloids, films, foams, sponges, and micro/nanofibers have been formulated, and among them, the electrospun nanofibrous mats received an increased interest from researchers due to the numerous advantages and their intrinsic properties. The drug-embedded nanofibers are the potential candidates for wound dressing application by virtue of: Superior surface area-to volume ratio, enormous porosity (can allow oxy-permeability) or reticular nano-porosity (can inhibit the microorganisms'adhesion), structural similitude to the skin extracellular matrix, and progressive electrospinning methodology, which promotes a prolonged drug release. The reason that we chose to review the formulation of electrospun nanofibers based on polysaccharides as dressings useful in wound healing was based on the ever-growing research in this field, research that highlighted many advantages of the nanofibrillary network, but also a marked versatility in terms of numerous active substances that can be incorporated for rapid and infection-free tissue regeneration. In this review, we have extensively discussed the recent advancements performed on electrospun nanofibers (eNFs) formulation methodology as wound dressings, and we focused as well on the entrapment of different active biomolecules that have been incorporated on polysaccharides-based nanofibers, highlighting those bioagents capable of improving the healing process. In addition, in vivo tests performed to support their increased efficacy were also listed, and the advantages of the polysaccharide nanofiber-based wound dressings compared to the traditional ones were emphasized.
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Affiliation(s)
- Andreea-Teodora Iacob
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Medicine and Pharmacy “Grigore T. Popa” Iași, 700115 Iasi, Romania; (A.-T.I.); (M.D.); (O.-M.I.); (D.L.)
| | - Maria Drăgan
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Medicine and Pharmacy “Grigore T. Popa” Iași, 700115 Iasi, Romania; (A.-T.I.); (M.D.); (O.-M.I.); (D.L.)
| | - Oana-Maria Ionescu
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Medicine and Pharmacy “Grigore T. Popa” Iași, 700115 Iasi, Romania; (A.-T.I.); (M.D.); (O.-M.I.); (D.L.)
| | - Lenuța Profire
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Medicine and Pharmacy “Grigore T. Popa” Iași, 700115 Iasi, Romania; (A.-T.I.); (M.D.); (O.-M.I.); (D.L.)
| | - Anton Ficai
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucuresti, Romania;
- Academy of Romanian Scientists, Ilfov st 3, 050085 Bucharest, Romania
| | - Ecaterina Andronescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucuresti, Romania;
- Academy of Romanian Scientists, Ilfov st 3, 050085 Bucharest, Romania
| | - Luminița Georgeta Confederat
- Department of Preventive Medicine and Interdisciplinarity, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa” Iași, 700115 Iasi, Romania;
| | - Dan Lupașcu
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Medicine and Pharmacy “Grigore T. Popa” Iași, 700115 Iasi, Romania; (A.-T.I.); (M.D.); (O.-M.I.); (D.L.)
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Electrospun fibers based on carbohydrate gum polymers and their multifaceted applications. Carbohydr Polym 2020; 247:116705. [PMID: 32829833 DOI: 10.1016/j.carbpol.2020.116705] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/12/2020] [Accepted: 06/28/2020] [Indexed: 12/29/2022]
Abstract
Electrospinning has garnered significant attention in view of its many advantages such as feasibility for various polymers, scalability required for mass production, and ease of processing. Extensive studies have been devoted to the use of electrospinning to fabricate various electrospun nanofibers derived from carbohydrate gum polymers in combination with synthetic polymers and/or additives of inorganic or organic materials with gums. In view of the versatility and the widespread choice of precursors that can be deployed for electrospinning, various gums from both, the plants and microbial-based gum carbohydrates are holistically and/or partially included in the electrospinning solution for the preparation of functional composite nanofibers. Moreover, our strategy encompasses a combination of natural gums with other polymers/inorganic or nanoparticles to ensue distinct properties. This early established milestone in functional carbohydrate gum polymer-based composite nanofibers may be deployed by specialized researchers in the field of nanoscience and technology, and especially for exploiting electrospinning of natural gums composites for diverse applications.
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Gerbin E, Frapart YM, Marcuello C, Cottyn B, Foulon L, Pernes M, Crônier D, Molinari M, Chabbert B, Ducrot PH, Baumberger S, Aguié-Béghin V, Kurek B. Dual Antioxidant Properties and Organic Radical Stabilization in Cellulose Nanocomposite Films Functionalized by In Situ Polymerization of Coniferyl Alcohol. Biomacromolecules 2020; 21:3163-3175. [DOI: 10.1021/acs.biomac.0c00583] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Elise Gerbin
- Université de Reims Champagne Ardenne, INRAE, FARE, UMR A 614, 51097 Reims, France
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | - Yves-Michel Frapart
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques—UMR CNRS 8601, Université de Paris, 75270 Paris, France
| | - Carlos Marcuello
- Université de Reims Champagne Ardenne, INRAE, FARE, UMR A 614, 51097 Reims, France
| | - Betty Cottyn
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | - Laurence Foulon
- Université de Reims Champagne Ardenne, INRAE, FARE, UMR A 614, 51097 Reims, France
| | - Miguel Pernes
- Université de Reims Champagne Ardenne, INRAE, FARE, UMR A 614, 51097 Reims, France
| | - David Crônier
- Université de Reims Champagne Ardenne, INRAE, FARE, UMR A 614, 51097 Reims, France
| | - Michael Molinari
- CBMN UMR CNRS 5248, Université de Bordeaux, IPB, Pessac, 33600, France
| | - Brigitte Chabbert
- Université de Reims Champagne Ardenne, INRAE, FARE, UMR A 614, 51097 Reims, France
| | - Paul-Henri Ducrot
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | - Stéphanie Baumberger
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | | | - Bernard Kurek
- Université de Reims Champagne Ardenne, INRAE, FARE, UMR A 614, 51097 Reims, France
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Wu J, Shen L, Duan S, Chen Z, Zheng Q, Liu Y, Sun Z, Clark JH, Xu X, Tu T. Selective Catalytic Dehydrogenative Oxidation of Bio‐Polyols to Lactic Acid. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004174] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiajie Wu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Lingyun Shen
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Sai Duan
- Collaborative Innovation Center of Chemistry for Energy Materials MOE Laboratory for Computational Physical Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Zhe‐Ning Chen
- Collaborative Innovation Center of Chemistry for Energy Materials MOE Laboratory for Computational Physical Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Qingshu Zheng
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Yaoqi Liu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Zheming Sun
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - James H. Clark
- Green Chemistry Centre of Excellence University of York York YO105DD UK
| | - Xin Xu
- Collaborative Innovation Center of Chemistry for Energy Materials MOE Laboratory for Computational Physical Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Tao Tu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 354 Fenglin Road Shanghai 200032 China
- College of Chemistry and Molecular Engineering Zhengzhou University 100 Kexue Avenue Zhengzhou 450001 China
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20
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Wu J, Shen L, Duan S, Chen Z, Zheng Q, Liu Y, Sun Z, Clark JH, Xu X, Tu T. Selective Catalytic Dehydrogenative Oxidation of Bio‐Polyols to Lactic Acid. Angew Chem Int Ed Engl 2020; 59:13871-13878. [DOI: 10.1002/anie.202004174] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Indexed: 01/07/2023]
Affiliation(s)
- Jiajie Wu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Lingyun Shen
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Sai Duan
- Collaborative Innovation Center of Chemistry for Energy Materials MOE Laboratory for Computational Physical Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Zhe‐Ning Chen
- Collaborative Innovation Center of Chemistry for Energy Materials MOE Laboratory for Computational Physical Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Qingshu Zheng
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Yaoqi Liu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Zheming Sun
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - James H. Clark
- Green Chemistry Centre of Excellence University of York York YO105DD UK
| | - Xin Xu
- Collaborative Innovation Center of Chemistry for Energy Materials MOE Laboratory for Computational Physical Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Tao Tu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 354 Fenglin Road Shanghai 200032 China
- College of Chemistry and Molecular Engineering Zhengzhou University 100 Kexue Avenue Zhengzhou 450001 China
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21
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Study on cellulose degradation induced by hydroxyl radical with cellobiose as a model using GC–MS, ReaxFF simulation and DFT computation. Carbohydr Polym 2020; 233:115677. [DOI: 10.1016/j.carbpol.2019.115677] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 11/10/2019] [Accepted: 11/25/2019] [Indexed: 12/30/2022]
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Yan Z, Lian J, Li M, Meng L, Zhang Y, Ge C, Lu J. Deeper insight into hydrolysis mechanisms of polyester/cotton blended fabrics for separation by explicit solvent models. Int J Biol Macromol 2020; 154:596-605. [PMID: 32194121 DOI: 10.1016/j.ijbiomac.2020.03.130] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/12/2020] [Accepted: 03/14/2020] [Indexed: 12/28/2022]
Abstract
Aiming to get a deeper and accurate understanding on separation of polyester/cotton blended fabrics in subcritical water, the hydrolysis mechanisms of cellulose and polyester were studied using dispersion-corrected density functional theory (DFT-D) method with and without explicit H2O under the conductor-like screening model (COSMO) set. The number and locations of explicit H2O were determined by their likely functions including being dissociation and solvent and catalyst. The calculations disclosed that explicit H2O provide inductive activation on glycosidic bond of cellulose and ester groups at the center of polyester and the assistance on the transfer of proton as proton-carrier and as catalyst of proton shuttle, affecting the reaction and activation energies in a realistic manner. In addition, the number of explicit H2O molecules functioning as catalyst of proton shuttle may also has a strong influence on catalytic activity. Based on the improved explicit solvation models, the overall activation energies of proposed hydrolysis mechanisms for cellulose and polyester are 14.81 and 21.46 kcal/mol respectively, which explains the preferential hydrolysis of cellulose from experimental results.
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Affiliation(s)
- Zhifeng Yan
- College of Textile Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Jie Lian
- College of Textile Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Miaoting Li
- College of Textile Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Lingyun Meng
- College of Textile Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Yongfang Zhang
- College of Textile Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Chao Ge
- College of Textile Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Jianjun Lu
- College of Textile Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
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23
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Liu J, Wang S, Wang C, Zhao F, Lei S, Yi H, Guo J. Influence of nanomaterial morphology of guar-gum fracturing fluid, physical and mechanical properties. Carbohydr Polym 2020; 234:115915. [PMID: 32070533 DOI: 10.1016/j.carbpol.2020.115915] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 01/23/2020] [Accepted: 01/23/2020] [Indexed: 10/25/2022]
Abstract
Nanosilica, multiwalled carbon nanotubes and graphite powder have different effects on guar gum fracturing fluid because of the different morphologies of these nanomaterials. The results showed that the apparent viscosity, temperature tolerance, elastic modulus and tensile strength of nano-hybrid guar gum fracturing fluids were improved by nanomaterials compared to those properties of blank fracturing fluid (without nanomaterials). However, microscopic analysis by SEM and TEM revealed that different nanomaterials played different roles in the network structure of guar gum fracturing fluid. In terms of micro particle size, modified nano-SiO2 (M-NS) played a nuclear point and skeleton role in the fracturing fluid and obviously enhanced the network structure. Hydroxylated multiwalled carbon nanotubes (MWNTs-OH) and guar gum macromolecular chains were intertwined. Graphene oxide (GO) intercalation entered the guar gum molecular chain and the interaction was relatively weak because of its sheet structure.
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Affiliation(s)
- Jiawen Liu
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu, Chengdu, Sichuan 610500, People's Republic of China
| | - Shibin Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu, Chengdu, Sichuan 610500, People's Republic of China.
| | - Chuan Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu, Chengdu, Sichuan 610500, People's Republic of China
| | - Feng Zhao
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu, Chengdu, Sichuan 610500, People's Republic of China
| | - Shi Lei
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu, Chengdu, Sichuan 610500, People's Republic of China
| | - Huiyong Yi
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu, Chengdu, Sichuan 610500, People's Republic of China
| | - Jianchun Guo
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu, Chengdu, Sichuan 610500, People's Republic of China
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Torlopov MA, Martakov IS, Mikhaylov VI, Golubev YA, Sitnikov PA, Udoratina EV. A Fenton-like System (Cu(II)/H 2O 2) for the Preparation of Cellulose Nanocrystals with a Slightly Modified Surface. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mikhail A. Torlopov
- Institute of Chemistry of Federal Research Center “Komi Science Centre of the Ural Branch of the Russian Academy of Sciences”, Pervomayskaya str., 48, Syktyvkar, Komi 167000, Russian Federation
| | - Ilia S. Martakov
- Institute of Chemistry of Federal Research Center “Komi Science Centre of the Ural Branch of the Russian Academy of Sciences”, Pervomayskaya str., 48, Syktyvkar, Komi 167000, Russian Federation
| | - Vasily I. Mikhaylov
- Institute of Chemistry of Federal Research Center “Komi Science Centre of the Ural Branch of the Russian Academy of Sciences”, Pervomayskaya str., 48, Syktyvkar, Komi 167000, Russian Federation
| | - Yevgeny A. Golubev
- Institute of Geology of Federal Research Center “Komi Science Centre of the Ural Branch of the Russian Academy of Sciences”, Pervomayskaya str., 54, Syktyvkar, Komi 167000, Russian Federation
| | - Petr A. Sitnikov
- Institute of Chemistry of Federal Research Center “Komi Science Centre of the Ural Branch of the Russian Academy of Sciences”, Pervomayskaya str., 48, Syktyvkar, Komi 167000, Russian Federation
| | - Elena V. Udoratina
- Institute of Chemistry of Federal Research Center “Komi Science Centre of the Ural Branch of the Russian Academy of Sciences”, Pervomayskaya str., 48, Syktyvkar, Komi 167000, Russian Federation
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25
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Ustyuzhanina NE, Bilan MI, Nifantiev NE, Usov AI. Structural analysis of holothurian fucosylated chondroitin sulfates: Degradation versus non-destructive approach. Carbohydr Res 2019; 476:8-11. [DOI: 10.1016/j.carres.2019.02.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/25/2019] [Accepted: 02/28/2019] [Indexed: 12/30/2022]
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26
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Synthesis, antioxidant activity and SAR study of novel spiro-isatin-based Schiff bases. Mol Divers 2019; 23:829-844. [DOI: 10.1007/s11030-018-09910-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 12/13/2018] [Indexed: 01/24/2023]
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27
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Shao C, Shi K, Hua Q, Zhang L, Dai Y, You W, Liu Y, Li C, Zhang C. Mechanism for the depolymerization of cellulose under alkaline conditions. J Mol Model 2018; 24:124. [DOI: 10.1007/s00894-018-3654-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 04/11/2018] [Indexed: 10/17/2022]
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28
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Dai Y, Shao C, Piao Y, Hu H, Lu K, Zhang T, Zhang X, Jia S, Wang M, Man S. Supplementary data for the mechanism for cleavage of three typical glucosidic bonds induced by hydroxyl free radical. Data Brief 2017; 15:414-418. [PMID: 29214203 PMCID: PMC5712059 DOI: 10.1016/j.dib.2017.09.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 09/13/2017] [Accepted: 09/26/2017] [Indexed: 11/08/2022] Open
Abstract
The data presented in this article are related to the research article entitled “The mechanism for cleavage of three typical glucosidic bonds induced by hydroxyl free radical” (Dai et al., 2017) [1]. This article includes the structures of three kinds of disaccharides such as maltose, fructose and cellobiose, the diagrammatic sketch of the hydrogen abstraction reaction of the disaccharides by hydroxyl radical, the structure of the transition states for pyran ring opening of moiety A and cleavage of α(1→2) glycosidic bond starting from the hydrogen abstraction of C6–H in moiety A of sucrose, the transition state structure for cleavage of α(1→2) glycosidic bond starting from the hydrogen abstraction of C1′-H in moiety B of sucrose, the transition state structure, sketch for the reaction process and relative energy change of the reaction pathway for direct cleavage of α(1→4) glycosidic bond starting from hydrogen abstraction of C6′–H of moiety B of maltose.
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Affiliation(s)
- Yujie Dai
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China
| | - Chunfu Shao
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China
| | - Yingai Piao
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China
| | - Huiqian Hu
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China
| | - Kui Lu
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China
| | - Tongcun Zhang
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China.,Institute of Biology and Medicine, Wuhan University of Science and Technology, Huangjiahu Campus, Wuhan 430000, PR China
| | - Xiuli Zhang
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China.,Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA
| | - Shiru Jia
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China
| | - Min Wang
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China
| | - Shuli Man
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, TEDA, No. 29 of 13th Street, Tianjin 300457, PR China
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