Carbohydrate Polymers最新文献_第5页

Antibacterial betaine modified chitosan-based hydrogel with angiogenic property for photothermal enhanced diabetic wound repairing 具有血管生成特性的抗菌甜菜碱修饰壳聚糖水凝胶用于光热增强型糖尿病伤口修复

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-19 DOI: 10.1016/j.carbpol.2024.123033

Kaiyue Zhang , Jingjing Zhu , Weichen Sun , Yu Zhang , Wenjuan Li , Yong Wang , Chengyan Zhou , Yingna He , Jianglei Qin

{"title":"Antibacterial betaine modified chitosan-based hydrogel with angiogenic property for photothermal enhanced diabetic wound repairing","authors":"Kaiyue Zhang , Jingjing Zhu , Weichen Sun , Yu Zhang , Wenjuan Li , Yong Wang , Chengyan Zhou , Yingna He , Jianglei Qin","doi":"10.1016/j.carbpol.2024.123033","DOIUrl":"10.1016/j.carbpol.2024.123033","url":null,"abstract":"<div><div>Chronic diabetes wound repairing is still a huge challenge in clinical practice. High concentration of reactive oxygen species and vascular disfunction are the main factors hindering the recovery of diabetes wounds. This research grafted betaine onto chitosan (CSBT) to enhance the antibacterial property and the CSBT was cross-linked with PEO<sub>90</sub> dialdehyde (PEO DA) to prepare hydrogel with Ca<sup>2+</sup> loading to promote the coagulation. The polydopamine nanoparticles (PDA NPs) with photothermal property and antioxidant property was composited to the hydrogel and deferoxamine (DFO) was loaded to fabricate the multifunctional CBPCa/PDA/DFO hydrogel to promote vascular regeneration in combination with photothermal antibacterial performance for the diabetes wounds treatment. The CBPCa/PDA/DFO hydrogel showed good mechanical strength, injectability, anti-inflammatory property and coagulation performance. Furthermore, the antibacterial effect of chitosan based hydrogel was enhanced with near infrared (NIR) stimulated photothermal treatment. Combined with the photothermal effect and the angiogenic drug DFO release, the CBPCa/PDA/DFO hydrogel significantly enhanced vascular regeneration and reduced the inflammation in the <em>in vivo</em> wound repairing experiment. As a result, the CBPCa/PDA/DFO hydrogel may provide a promising therapeutic platform for diabetic trauma repairing.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 123033"},"PeriodicalIF":10.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metabolic outcomes of Cordyceps fungus and Goji plant polysaccharides during in vitro human fecal fermentation 虫草真菌和枸杞多糖在体外人体粪便发酵过程中的代谢结果

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-19 DOI: 10.1016/j.carbpol.2024.123019

Fang Ting Gu , Jun Hui Li , Zi Chen Zhao , Yan Yu Zhu , Lin Xi Huang , Jian Yong Wu

{"title":"Metabolic outcomes of Cordyceps fungus and Goji plant polysaccharides during in vitro human fecal fermentation","authors":"Fang Ting Gu , Jun Hui Li , Zi Chen Zhao , Yan Yu Zhu , Lin Xi Huang , Jian Yong Wu","doi":"10.1016/j.carbpol.2024.123019","DOIUrl":"10.1016/j.carbpol.2024.123019","url":null,"abstract":"<div><div>This study was to assess the digestion and colonic fermentation of two bioactive polysaccharides, EPS-LM and LBPS, and the subsequent influences on human gut microbiota through simulated gastrointestinal systems. EPS-LM, an exopolysaccharide isolated from mycelial culture of a medicinal fungus <em>Cordyceps sinensis</em> Cs-HK1, was characterized as a heteropolysaccharide consisting of Man(108):Gal(52.7):Glc(29.2) (molar ratio) with an average molecular weight (MW) 5.513 × 10<sup>6</sup>. LBPS was isolated from a well-known medicinal plant (<em>Lycium barbarum</em> L.) which was also characterized as a heteropolysaccharide (1.236 × 10<sup>5</sup> MW). Both polysaccharides were highly resistant to saliva, gastric and small-intestine digestion with negligible MW reduction and release of reducing sugars but were quickly degraded to lower MW during <em>in vitro</em> human fecal fermentation. They were consumed as a carbon source by the gut bacteria to produce short-chain fatty acids (SCFAs). In comparison, the carbohydrate content of EPS-LM was more completely consumed than LBPS and there were also notable differences in consumption of specific monosaccharides and production of specific SCFAs, propionic and butyric acid, and relative abundance of gut bacterial populations between EPS-LM and LBPS group. The results suggest that metabolic outcomes and modulating effects of EPS-LM and LBPS on the gut microbiota are highly dependent on their molecular composition.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"350 ","pages":"Article 123019"},"PeriodicalIF":10.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly efficient dye adsorption by hierarchical porous SA/PVA/ZIF-8 composite microgels prepared via microfluidics 通过微流控技术制备的分层多孔 SA/PVA/ZIF-8 复合微凝胶对染料的高效吸附

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-19 DOI: 10.1016/j.carbpol.2024.123016

Nann Aye Mya Mya Phu , Eunsol Wi , Ganghoon Jeong , Hyungwoo Kim , Nayan Ranjan Singha , Mincheol Chang

{"title":"Highly efficient dye adsorption by hierarchical porous SA/PVA/ZIF-8 composite microgels prepared via microfluidics","authors":"Nann Aye Mya Mya Phu , Eunsol Wi , Ganghoon Jeong , Hyungwoo Kim , Nayan Ranjan Singha , Mincheol Chang","doi":"10.1016/j.carbpol.2024.123016","DOIUrl":"10.1016/j.carbpol.2024.123016","url":null,"abstract":"<div><div>Hierarchical porous composite microgels (SPZ microgels) were synthesized using microfluidic technology, composed of sodium alginate (SA), polyvinyl alcohol (PVA), and zeolitic imidazolate framework-8 (ZIF-8). The incorporation of ZIF-8 nanoparticles led to the formation of significant porous structures within the microgels, greatly enhancing their dye adsorption performance. Additionally, the diffusion of acetone during the crosslinking reaction resulted in sodium chloride crystal formation, creating a hierarchical porous structure with larger internal porous channels and smaller external channels. These SPZ microgels exhibited remarkable adsorption capabilities for both anionic and cationic dyes. The SPZ microgels showed exceptional adsorption capacities of 180 mg/g for methyl orange (MO) and 210 mg/g for methylene blue (MeB), far exceeding the performance of control microgels without the hierarchical porous structure (20 mg/g for MO and 150 mg/g for MeB). The hierarchical porous structure provided a larger surface area and facilitated improved diffusion and faster adsorption kinetics, contributing to the superior adsorption performance of the SPZ microgels. Kinetic studies revealed that MeB adsorption followed pseudo-second-order kinetics, while MO adsorption followed pseudo-first-order kinetics. Isotherm studies established that the Langmuir model accurately described MeB adsorption, indicating monolayer adsorption, while the Freundlich model effectively characterized MO adsorption, indicating multilayer interactions.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"350 ","pages":"Article 123016"},"PeriodicalIF":10.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A carboxymethyl chitosan and dextran hydrogel with slow and rapid photothermal conversion for sequential promoting burn wound healing and inhibiting scar proliferation

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-19 DOI: 10.1016/j.carbpol.2024.123045

Zheng Chen , Zixuan Zhou , Xinyuan Zhang , Zhengyue Wang , Jinchen Fan , Wenyi Wang , Yongjun Zheng , Shige Wang

{"title":"A carboxymethyl chitosan and dextran hydrogel with slow and rapid photothermal conversion for sequential promoting burn wound healing and inhibiting scar proliferation","authors":"Zheng Chen , Zixuan Zhou , Xinyuan Zhang , Zhengyue Wang , Jinchen Fan , Wenyi Wang , Yongjun Zheng , Shige Wang","doi":"10.1016/j.carbpol.2024.123045","DOIUrl":"10.1016/j.carbpol.2024.123045","url":null,"abstract":"<div><div>Facilitating swift burn wound healing while effectively preventing scar formation continues to be a considerable challenge in medical practice. In this study, an injectable carboxymethyl chitosan/oxidized dextran/polyvinylpyrrolidone/dopamine (COPD) hydrogel was designed for the effective sequentially promotion of burn wound healing and inhibition of scar formation. The COPD hydrogel precursor solution was injected into the burn wound via a double-barreled syringe and transformed into an adherent hydrogel within 25 s. The inclusion of dopamine imparted good free radical scavenging properties to the hydrogel. In particular, the gradual oxidation of dopamine to polydopamine enabled a unique heat production pattern—initially slow (photothermal conversion efficiency: 30.3 %) and then rapidly temperature increasing (photothermal conversion efficiency: 42.8 %) —under single laser irradiation. The effect of promoting healing at the initial stage of the wound was evaluated by constructing a male C57BL/6 mice model with deep second-degree burns, observation of the wound area, PCR analysis, and immunohistochemical staining. Furthermore, the scar inhibition was confirmed by observing reduced expression levels of α-SMA and COL<img>I, along with a decreased collagen I/III ratio. With tunable mechanical properties (maximum compressive strength of 966.4 ± 51.7 kPa), the COPD hydrogel holds significant promise as an adjunctive photothermal platform for intelligent burn wound management.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"350 ","pages":"Article 123045"},"PeriodicalIF":10.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the application-related features of sweet potato starch varying in multi-scale supramolecular structure

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-19 DOI: 10.1016/j.carbpol.2024.122997

Yabin Guo , Dongling Qiao , Siming Zhao , Xiaowen Pi , Bowen Li , Kai Zhang , Binjia Zhang

{"title":"Understanding the application-related features of sweet potato starch varying in multi-scale supramolecular structure","authors":"Yabin Guo , Dongling Qiao , Siming Zhao , Xiaowen Pi , Bowen Li , Kai Zhang , Binjia Zhang","doi":"10.1016/j.carbpol.2024.122997","DOIUrl":"10.1016/j.carbpol.2024.122997","url":null,"abstract":"<div><div>Understanding the application-related features of sweet potato starch (SPS) is necessary for its utilization, which remains limited. Here, seven starches isolated from different sweet potato varieties (HA, SS, YSA, YSB, YSC, YSD, and YSE) were used. It was confirmed that the multi-scale structure possesses significant effects upon the application-related features of SPS. Relatively thinner crystalline lamellae contributed to less resistance to hydrothermal effects and thus increased peak viscosity (<em>η</em><sub>p</sub>) value, while thicker crystalline lamellae and smaller granule size resulted in elevated paste stability under shearing. The synergism of amylose content and molecular orders on digestion rate (<em>k</em>) was also observed, and a higher proportion of stable molecular orders and high thermal stability resulted in an attenuated <em>k</em>. Consequently, the YSA starch with the highest proportion (ca. 0.63) of stable long-range molecular orders (indicated by the high melting temperature: ca. 63 °C) within the starch granule could restrict enzymes' diffusion and permeation towards the starch matrices, and thus elevated resistant starch (79.66 %), possessing huge potential for designing low glycaemic index foods. Additionally, the higher amylose content of the HA starch (15.14 %) and the YSB starch (15.31 %) may contribute to the amylose aggregation and the amylopectin recrystallization, and thus increased gel strength.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"350 ","pages":"Article 122997"},"PeriodicalIF":10.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A micrometer sized porous β-cyclodextrin polymer for improving bioavailability of poorly soluble drug 用于提高难溶性药物生物利用度的微米级多孔 β-环糊精聚合物

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-19 DOI: 10.1016/j.carbpol.2024.123042

Sisi Yi, Tao Guo, Yan Wang, Xiaodi Yang, Yue Liao, Xiyu Tang, Xiangjun Zhang

引用次数: 0

Reinforced enzyme mineralized chitosan hydrogels with superior mechanical and osteogenic properties 具有卓越机械和成骨特性的强化酶矿化壳聚糖水凝胶

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-19 DOI: 10.1016/j.carbpol.2024.123032

Yao Wang , Nihui Zhang , Junwei Zhang, Ruijuan Yao, Jing He, Fang Wu

{"title":"Reinforced enzyme mineralized chitosan hydrogels with superior mechanical and osteogenic properties","authors":"Yao Wang , Nihui Zhang , Junwei Zhang, Ruijuan Yao, Jing He, Fang Wu","doi":"10.1016/j.carbpol.2024.123032","DOIUrl":"10.1016/j.carbpol.2024.123032","url":null,"abstract":"<div><div>As a natural cationic polymer material, the application of chitosan hydrogel for bone tissue engineering has been greatly limited due to its poor mechanical strength. Enzymatic mineralization has drawn increased attention to effectively improve the mechanical properties of hydrogels. In this study, carboxymethyl chitosan (CMCS) hydrogels cross-linked with different concentrations of genipin (2.5 %, 5 % and 10 %) were prepared and further mineralized through enzyme-induced biomimetic mineralization. The mechanical properties of the CMCS hydrogels were significantly increased as a result of mineralization, showing improvement of 1200–1500 % on storage moduli, and even exhibiting certain tensile behavior with the elongation rate of 30–35 %, likely due to the uniform formation and small size of mineralized products. Interestingly, the cationicity of chitosan also exerted an important modulation effect and the mineralization behavior and mechanical properties of mineralized hydrogels. In addition, the enzymatic mineralized hydrogels showed enhanced biocompatibility and osteogenic differentiation in-vitro, likely due to its superior mechanical properties and the introduction of calcium phosphate biominerals. In vivo experiments further suggest excellent bone-forming activity for the enzymatic mineralized hydrogels. Overall, tuning cationicity and enzymatic mineralization provide an effective approach for the preparation of chitosan hydrogels with superior mechanical and biological properties for bone tissue engineering application.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 123032"},"PeriodicalIF":10.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of carrageenan on stability and 3D printing performance of high internal phase pickering emulsion stabilized by soy protein isolate aggregates under neutral condition 卡拉胶对中性条件下用大豆分离蛋白聚合体稳定的高内相萃取乳液的稳定性和 3D 打印性能的影响

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-19 DOI: 10.1016/j.carbpol.2024.123020

Rui Li , Xiuqin Guo , Pengfei Liu , Yuanyuan Li , Si Qiu , Yuntao Wang

{"title":"Effect of carrageenan on stability and 3D printing performance of high internal phase pickering emulsion stabilized by soy protein isolate aggregates under neutral condition","authors":"Rui Li , Xiuqin Guo , Pengfei Liu , Yuanyuan Li , Si Qiu , Yuntao Wang","doi":"10.1016/j.carbpol.2024.123020","DOIUrl":"10.1016/j.carbpol.2024.123020","url":null,"abstract":"<div><div>High internal phase Pickering emulsion (HIPPE) stabilized by heat induced soy protein isolate aggregates (HSPI) alone had limited stability and poor 3D printing performance. While there is few research about HIPPE stabilized by HSPI and polysaccrides at neutral pH condition, where HSPI and ĸ-carrageenan (CG) were combined to fabricate HIPPE in this research. It was found that the incorporation of CG significantly decreased the droplet size and improved the storage stability of the resulting HIPPE. Moreover, the presence of CG improved the freeze-thaw stability of HIPPE after one freeze-thaw cycle. In addition, the addition of CG significantly improved the structural integrity of the 3D printed HIPPE and enhanced the printing precision. This was because the presence of CG decreased the interfacial tension, increased the zeta potential and viscosity of HSPI-CG, thus promoting the adsorption of particles to the oil-water interface more effectively. Moreover, the presence of CG significantly enhanced the viscoelasticity of the resulting HIPPE. These results can be further attributed to the strong hydrogen bonding and hydrophobic interaction between HSPI and CG at neutral pH condition, which can be confirmed from results of Fourier-transform infrared spectroscopy and Isothermal titration calorimeter. So the incorporation of CG endowed HIPPE with more excellent properties at a lower solid particle concentration.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 123020"},"PeriodicalIF":10.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring cyclodextrin-driven advancements in aqueous Zn-ion battery: A review 探索环糊精驱动的水性 Zn 离子电池技术进步：综述

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-19 DOI: 10.1016/j.carbpol.2024.123041

Ahmed Hazem Abdelhay, Abdulilah Dawoud Bani-Yaseen

{"title":"Exploring cyclodextrin-driven advancements in aqueous Zn-ion battery: A review","authors":"Ahmed Hazem Abdelhay, Abdulilah Dawoud Bani-Yaseen","doi":"10.1016/j.carbpol.2024.123041","DOIUrl":"10.1016/j.carbpol.2024.123041","url":null,"abstract":"<div><div>The growing demand for sustainable and efficient energy storage solutions has emphasized the value of aqueous zinc-ion batteries (AZIBs) as a safer and less expensive alternative to lithium-ion batteries. Despite their potential, AZIBs confront considerable obstacles, particularly the production of zinc dendrites and side reactions such hydrogen evolution, which limit their cycling stability and practical applicability. In this review, we explore the prospective function of cyclodextrins (CDs), a type of supramolecular carbohydrate polymer, in addressing such challenges. CDs, with their unique capacity to form inclusion complexes, provide an innovative approach for controlling zinc deposition, limiting dendrite development, and minimizing parasitic interactions. We present a detailed assessment of recent improvements in the use of CDs to change electrolytes and the electrode/electrolyte interface, resulting in improved electrochemical performance of AZIBs. This review focuses on CDs' potential as multifunctional additives for improving zinc anode stability, extending battery life, and facilitating large-scale AZIB adoption.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 123041"},"PeriodicalIF":10.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparing enzymatic post-treatments by endoglucanase (EG) and lytic polysaccharide monooxygenase (LPMO) on microfibrillated cellulose (MFC) to enhance cellulose film fabrication 比较内切葡聚糖酶（EG）和裂解多糖单氧化酶（LPMO）对微纤化纤维素（MFC）的酶后处理，以提高纤维素膜的制造水平

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-18 DOI: 10.1016/j.carbpol.2024.123037

Jie Wu , Yufeng Yuan , Qi Hua , Tao Zou , Zhangmin Wan , Gio Ferson Bautista , Orlando Rojas , Scott Renneckar , Jack Saddler

{"title":"Comparing enzymatic post-treatments by endoglucanase (EG) and lytic polysaccharide monooxygenase (LPMO) on microfibrillated cellulose (MFC) to enhance cellulose film fabrication","authors":"Jie Wu , Yufeng Yuan , Qi Hua , Tao Zou , Zhangmin Wan , Gio Ferson Bautista , Orlando Rojas , Scott Renneckar , Jack Saddler","doi":"10.1016/j.carbpol.2024.123037","DOIUrl":"10.1016/j.carbpol.2024.123037","url":null,"abstract":"<div><div>Cellulose is the world's most abundant natural polymer and it can be used as a substitute for fossil derived products. The work described here evaluated the use of mono-component enzyme treatment, using endoglucanase (EG) and lytic polysaccharide monooxygenase (LPMO), to improve the properties of micro-fibrillated cellulose (MFC) produced from mechanically refined kraft pulp. Endoglucanase treatment of the pulp significantly reduced the degree of polymerization (DP) of the cellulose by promoting fiber cutting. In contrast, LPMO treatment only slightly reduced the fiber length and pulp viscosity. However, the introduction of carboxylic acid groups by the action of LPMO appeared to enhance the accessible surface area of cellulose. Enzyme-treated MFC showed improved nano-fibrillation with transmittance and water retention values increased after both enzyme treatments. The cellulose films derived from enzyme-treated MFC showed enhanced mechanical properties with the LPMO-treated films showing superior tensile strength (77 MPa) and Young's modulus (3600 MPa). Thermogravimetric analysis (TGA) also indicated improved thermal stability for both enzyme-treated films. LPMO treatments proved more effective, promoting nano-fibrillation while maintaining fiber integrity and enhanced intermolecular interactions.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 123037"},"PeriodicalIF":10.7,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0