Carbohydrate Polymers最新文献_第10页

Recent advancements in magnetic starch-based composites for biomedical applications: A review 磁性淀粉基生物医学复合材料的研究进展

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-30 DOI: 10.1016/j.carbpol.2025.123689

Kun Fang , Pei Li , Xiangrui Huang , Hanbing Wang , Yihan Li , Dongyang Zhu , Bo Luo

{"title":"Recent advancements in magnetic starch-based composites for biomedical applications: A review","authors":"Kun Fang , Pei Li , Xiangrui Huang , Hanbing Wang , Yihan Li , Dongyang Zhu , Bo Luo","doi":"10.1016/j.carbpol.2025.123689","DOIUrl":"10.1016/j.carbpol.2025.123689","url":null,"abstract":"<div><div>The increasing demand for biomedical materials to address various diseases has highlighted the need for advanced biocompatible materials with improved biofunctionality for smart diagnostics and clinical therapies. Starch, a natural polymer, is an ideal starting material for the development of multifunctional biomedical materials due to its biocompatibility, low toxicity, and biodegradability. However, native starch lacks certain properties, particularly magnetic properties. By strategically modifying the structure of starch or its derivatives and incorporating different types of magnetic nanoparticles (MNPs), magnetic starch-based composites (MSBCs) can be developed. These composites take the advantages of both the magnetic materials and natural polysaccharides, enhancing the mechanical strength of starch and imparting additional properties, such as magneto-thermal effects, targeting ability, stimulus-responsive drug delivery, and easy separation. As a result, MSBCs have widespread applications in fields such as wound dressing and magneto-thermal therapy. This review highlights the types of MSBCs, their synthesis methods, and their current applications in biomedicine. Additionally, this review describes the major challenges faced by MSBCs in biomedical applications and provides an outlook on their potential for further development. This review aims to improve the understanding of magnetic starches and optimize their synthetic strategies, positioning MSBCs as promising platforms for biomedical applications.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123689"},"PeriodicalIF":10.7,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921609","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

Controlled soil drying mitigates the effects of high-temperature stress on rice quality by enhancing starch accumulation and stabilizing starch structure and functional properties 控制土壤干燥通过促进淀粉积累、稳定淀粉结构和功能特性减轻高温胁迫对稻米品质的影响

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-30 DOI: 10.1016/j.carbpol.2025.123688

Haotian Chen , Meijie Jia , Shouqian Luo , Ying Liu , Yajun Zhang , Kuanyu Zhu , Weilu Wang , Yunji Xu , Junfei Gu , Hao Zhang , Zhiqin Wang , Lijun Liu , Jianhua Zhang , Jianchang Yang , Weiyang Zhang

{"title":"Controlled soil drying mitigates the effects of high-temperature stress on rice quality by enhancing starch accumulation and stabilizing starch structure and functional properties","authors":"Haotian Chen , Meijie Jia , Shouqian Luo , Ying Liu , Yajun Zhang , Kuanyu Zhu , Weilu Wang , Yunji Xu , Junfei Gu , Hao Zhang , Zhiqin Wang , Lijun Liu , Jianhua Zhang , Jianchang Yang , Weiyang Zhang","doi":"10.1016/j.carbpol.2025.123688","DOIUrl":"10.1016/j.carbpol.2025.123688","url":null,"abstract":"<div><div>Effective water management is essential for addressing high-temperature (HT) challenges to rice quality. This study explored whether a controlled moderate soil drying (MD) regime could serve as a viable alternative to the conventional well-watered (WW) regime in mitigating the effects of HT stress on rice quality. Two rice varieties were cultivated under normal temperature and HT conditions and subjected to the WW and MD regimes during the grain filling period. Findings revealed that HT stress significantly compromised rice quality. However, under HT conditions, the MD regime proved more effective than the WW regime in maintaining plant water homeostasis and enhancing photosynthesis. This improvement not only facilitated the accumulation of nonstructural carbohydrates in the grains but also boosted the activity of key starch-synthesizing enzymes, leading to a marked increase in starch accumulation. Specifically, under HT stress, the MD regime significantly enhanced the milling and appearance quality of rice; for instance, the head rice rates of <em>Jinxiangyu-1</em> and <em>Yangdao-6</em> increased by 13.6 % and 13.7 % while their chalkiness degrees decreased by 26.2 % and 24.8 %, respectively. Moreover, the MD regime contributed to the stabilization of starch molecular structure and functional properties, thereby further alleviating the negative impacts of HT stress on rice quality.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123688"},"PeriodicalIF":10.7,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932012","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

Cyclodextrin metal-organic framework design principles and functionalization for biomedical application 环糊精金属有机骨架设计原理及功能化在生物医学上的应用

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-30 DOI: 10.1016/j.carbpol.2025.123684

Mubarak G. Bello , Jiwen Zhang , Lihua Chen

{"title":"Cyclodextrin metal-organic framework design principles and functionalization for biomedical application","authors":"Mubarak G. Bello , Jiwen Zhang , Lihua Chen","doi":"10.1016/j.carbpol.2025.123684","DOIUrl":"10.1016/j.carbpol.2025.123684","url":null,"abstract":"<div><div>Cyclodextrin based metal-organic frameworks (CD-MOFs) have emerged as a groundbreaking class of biomaterials, combining biocompatibility, structural versatility, and tunable porosity for diverse applications. Despite their promise, challenges such as aqueous instability, scalability, and precise functionalization hinder their full potential. This review systematically examines CD-MOF design principles, synthesis strategies, and post-synthetic modifications to address these limitations. We highlight the relationship between framework architecture and drug encapsulation/release mechanisms, offering insights into enhancing therapeutic efficacy. Advanced functionalization techniques including ligand grafting, stimuli-responsive systems, and hybrid composites are explored to improve stability and targeting precision. Furthermore, we discuss CD-MOF composites for scalable drug delivery and sensing applications. Safety profiles and industrial challenges are thoroughly explored, with forward-looking perspectives on AI-driven solutions. This review establishes a foundational framework for CD-MOFs, highlighting their transformative potential in biomedical application. The insights gained here will guide the development of next-generation CD-MOFs, leveraging their unique properties to advance biomedical research and clinical applications.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"364 ","pages":"Article 123684"},"PeriodicalIF":10.7,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134939","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

Unlocking the potential of deep eutectic solvents for sustainable pectin extraction 解锁深层共晶溶剂可持续提取果胶的潜力

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-30 DOI: 10.1016/j.carbpol.2025.123683

Milad Hadidi , Mohammad Tarahi , David Julian McClements , Fatemeh Aghababaei

{"title":"Unlocking the potential of deep eutectic solvents for sustainable pectin extraction","authors":"Milad Hadidi , Mohammad Tarahi , David Julian McClements , Fatemeh Aghababaei","doi":"10.1016/j.carbpol.2025.123683","DOIUrl":"10.1016/j.carbpol.2025.123683","url":null,"abstract":"<div><div>Pectin is a heterogeneous polysaccharide mainly found in the cell walls of plants. Owing to its unique biological and functional properties, pectin is widely used across various industrial sectors, including the food, pharmaceutical, and cosmetic industries. The conventional method of industrially extracting pectin from plant materials is to use prolonged heating under highly acidic conditions. This process poses several drawbacks, including system corrosion, high energy consumption, and environmental concerns. This review article evaluates the potential application of deep eutectic solvents (DESs) as green alternatives to conventional solvents for pectin extraction, due to their exceptional extraction efficiency, minimal toxicity, low cost, eco-friendliness, and reusability. The classification, synthesis procedures, and physicochemical properties of DESs are reviewed. Additionally, the application of DESs for pectin extraction is discussed, both alone and in combination with other emerging extraction techniques, such as ultrasonic, microwave or high-pressure methods. Finally, the advantages and disadvantages of using DESs for pectin extraction are discussed. DESs has already shown considerable potential for the sustainable extraction of pectin from various plant sources, while preserving its functional attributes. The wide range of substances available for preparing DESs enables their extraction properties to be tailored for particular applications, allowing them to meet the specific needs for pectin extraction. DESs can be used in combination with other emerging extraction technologies to improve its pectin extraction efficiency. Therefore, the optimization of DES-assisted extraction techniques may lead to new sustainable methods for isolating pectin.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123683"},"PeriodicalIF":10.7,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900239","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

Bioactive glycyrrhizic acid–astragalus polysaccharide hydrogel facilitates gastric ulcer healing via ROS scavenging and anti-apoptotic effects 生物活性甘草酸-黄芪多糖水凝胶通过清除活性氧和抗细胞凋亡作用促进胃溃疡愈合

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-29 DOI: 10.1016/j.carbpol.2025.123685

Haocheng Zheng , Shan Gao , Yunze Liu , Tieshan Wang , Jiena Chen , Junzhe Zhang , Chengze Li , Dianchun Liu , Yixiao Gu , Haiming Lei , Yuan Li , Yicong Li , Xia Ding

{"title":"Bioactive glycyrrhizic acid–astragalus polysaccharide hydrogel facilitates gastric ulcer healing via ROS scavenging and anti-apoptotic effects","authors":"Haocheng Zheng , Shan Gao , Yunze Liu , Tieshan Wang , Jiena Chen , Junzhe Zhang , Chengze Li , Dianchun Liu , Yixiao Gu , Haiming Lei , Yuan Li , Yicong Li , Xia Ding","doi":"10.1016/j.carbpol.2025.123685","DOIUrl":"10.1016/j.carbpol.2025.123685","url":null,"abstract":"<div><div>Gastric ulcers are refractory wounds that pose a significant clinical challenge, underscoring the urgent need for effective and affordable therapeutic strategies. In this study, we purified a novel homogeneous astragalus polysaccharide (APS13) and elucidated its structure, which consists of a →4)-α-1,4-Glc(1→ backbone with glucose branches at the 6-position, as determined by 2D-NMR and glycosyl residue analysis. To enhance its tissue adhesion and drug release profile, APS13 was co-assembled with glycyrrhizic acid (GA) into a GA-APS hydrogel. The resulting hydrogel exhibited strong adhesion and prolonged gastric retention under acidic conditions. In vivo and in vitro studies demonstrated that the GA-APS hydrogel reduced ulcer area, improved mucosal integrity, and decreased apoptosis-related protein expression in a rat model of acute gastric ulcer. Comparative analyses showed enhanced therapeutic outcomes relative to treatment with GA or APS13 alone. Proteomic and cellular experiments further indicated that the hydrogel's protective effect is associated with attenuation of ROS-induced apoptosis. These findings highlight the therapeutic potential of APS13-based hydrogels and offer a natural-material strategy for addressing oxidative stress-related gastric injury.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123685"},"PeriodicalIF":10.7,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904186","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

Long-acting injectable delivery system comprising ordered mixed drug aggregates with deaggregating and uniformly embeddable viscoelastic -polysaccharide solutions 长效注射给药系统，包括有序混合药物聚集体与脱聚集体和均匀嵌入粘弹性多糖溶液

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-29 DOI: 10.1016/j.carbpol.2025.123682

Jun Soo Park , Dong Gun Lee , Jin Hyuk Myung , Min Young Jeong, In Gyu Yang, Gi Yeong Lee, Ji Won Yeo, Chae Won Park, Jin Hwan Kim, Ye Bin Shin, Myoung Jin Ho, Sung Giu Jin, Yong Seok Choi, Myung Joo Kang

{"title":"Long-acting injectable delivery system comprising ordered mixed drug aggregates with deaggregating and uniformly embeddable viscoelastic -polysaccharide solutions","authors":"Jun Soo Park , Dong Gun Lee , Jin Hyuk Myung , Min Young Jeong, In Gyu Yang, Gi Yeong Lee, Ji Won Yeo, Chae Won Park, Jin Hwan Kim, Ye Bin Shin, Myoung Jin Ho, Sung Giu Jin, Yong Seok Choi, Myung Joo Kang","doi":"10.1016/j.carbpol.2025.123682","DOIUrl":"10.1016/j.carbpol.2025.123682","url":null,"abstract":"<div><div>This study aimed to construct a ready-to-use, two-syringe mixing (TM) system comprising free-flowing drug aggregates with deaggregating and uniformly embeddable polysaccharide solutions as a new approach for long-acting parenteral delivery. Rotigotine (RG) and donepezil (DP), approved for the treatment of Parkinson's and Alzheimer's diseases, respectively, were employed as model compounds. For syringe filling, free-flowing drug aggregates were engineered using ordered mixing, adhering pulverized RG (1.1 ± 0.3 μm) or DP particles (0.8 ± 0.2 μm) to hydrophilic polyvinylpyrrolidone K17 particles (120 to 150 μm). Drug aggregates were effectively deaggregated and distributed as individual fine drug particles in hyaluronate (HA) or carboxymethyl cellulose (CMC) matrices <em>via</em> electrostatic interactions during TM process. TM systems of RG with HA or CMC and DP with HA provided extended drug release with decreased <em>in vivo</em> spread following subcutaneous injection. TM systems of RG and DP provided protracted pharmacokinetic profiles over 4 weeks with decreased initial exposure compared to drug suspensions and even profiles comparable to those of biodegradable polymer-based <em>in situ</em> forming implants (ISFI). Moreover, RG-loaded HA- or CMC-TM systems alleviated the local inflammation compared to the ISFI. Therefore, this polysaccharide-based TM system is expected to serve as a simple and effective long-acting delivery system for water-insoluble therapeutic agents.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123682"},"PeriodicalIF":10.7,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900238","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 completely bio-based corn starch/sodium carboxymethyl cellulose film with antibacterial and antioxidant performance modified by a natural alcohol ester of amino acid and curcumin 用天然氨基酸醇酯和姜黄素改性的具有抗菌和抗氧化性能的全生物基玉米淀粉/羧甲基纤维素钠膜

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-29 DOI: 10.1016/j.carbpol.2025.123686

Qian Jiang , Lijia Liu , Xuan Yuan , Huan Li , Yudan Wang , Junqing Li

{"title":"A completely bio-based corn starch/sodium carboxymethyl cellulose film with antibacterial and antioxidant performance modified by a natural alcohol ester of amino acid and curcumin","authors":"Qian Jiang , Lijia Liu , Xuan Yuan , Huan Li , Yudan Wang , Junqing Li","doi":"10.1016/j.carbpol.2025.123686","DOIUrl":"10.1016/j.carbpol.2025.123686","url":null,"abstract":"<div><div>To address the ecological pollution caused by synthetic antimicrobial agents in conventional food packaging films, we have successfully developed a fully bio-based and sustainable food packaging film that exhibits exceptional antibacterial and antioxidant properties. In this study, we designed and synthesized two novel natural alcohol esters of amino acid (NAEAAs)—L-Trp-Men and L-Trp-Bor—through esterification reactions involving <em>L</em>-tryptophan (<em>L</em>-Trp) and <em>L</em>-Menthol or Borneol, respectively. A multifunctional composite film system was constructed using natural corn starch (CS) and sodium carboxymethyl cellulose (CMC) as the matrix materials, with NAEAAs serving as the antimicrobial active components and curcumin (Cur) as the antioxidant. Experimental results demonstrated that the CS/CMC/Men2/Cur2 composite film, containing 2 wt% additives, exhibited nearly complete (≈100 %) broad-spectrum antibacterial efficiency against both <em>Escherichia coli</em> and <em>Staphylococcus aureus</em>, alongside a DPPH radical scavenging rate of 45.69 ± 1.39 %. Cytotoxicity tests confirmed the excellent biocompatibility of NAEAAs, which hydrolyze into amino acids and natural alcohols, thereby minimizing environmental contamination. These fully natural material-based films present a novel approach for developing green, pollution-free, and renewable bio-based food packaging materials.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123686"},"PeriodicalIF":10.7,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912109","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

Multilayered separators with core-shell structured nanocellulose-SiO2 nanocomposites for lithium-ion batteries 锂离子电池用核壳结构纳米纤维素- sio2纳米复合材料多层分离器

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-29 DOI: 10.1016/j.carbpol.2025.123677

Hyeyun Kim , Chaeeun Lee , Jaemin Jo , Seonmyeong Yu , Sunghee Shin , Kahyun Hur , Bonwook Koo , Kwang Ho Kim , Jinyeon Hwang

{"title":"Multilayered separators with core-shell structured nanocellulose-SiO2 nanocomposites for lithium-ion batteries","authors":"Hyeyun Kim , Chaeeun Lee , Jaemin Jo , Seonmyeong Yu , Sunghee Shin , Kahyun Hur , Bonwook Koo , Kwang Ho Kim , Jinyeon Hwang","doi":"10.1016/j.carbpol.2025.123677","DOIUrl":"10.1016/j.carbpol.2025.123677","url":null,"abstract":"<div><div>Multilayered porous separators consisting of cellulose nanofibers (CNF) and SiO<sub>2</sub> coating are fabricated for lithium-ion batteries (LIBs) as an eco-friendly alternative to conventional polyolefin separators. Employing a sol-gel synthesis method, SiO<sub>2</sub> nanoparticles are intricately arranged on CNF to create core-shell structured CNF-SiO<sub>2</sub> composites. Simple binder-free CNF-SiO<sub>2</sub> surface coated composite separators are obtained via alternating sequential vacuum filtration of CNF suspensions and the nanocomposite coating functional layers, resulting in bi- and tri-layered separators. CNF entangled structure determines the pore architecture of CNF-SiO<sub>2</sub> as a molecular template, while simultaneously tailoring the size distribution of pores and fibers within the separator, thus optimizing Li-ion transport pathways. By combining core-shell structured CNF-SiO<sub>2</sub> nanocomposites as a functional layer with CNF separators, the resulting multilayer separators significantly improve the electrochemical stability of LIBs due to the effective suppression of electrolyte decomposition and dendrite growth on the Li metal surface. This approach simplifies material sourcing and production processes, making it particularly attractive for large-scale manufacturing for LIBs separators from carbohydrate precursors extracted from biomass. This study highlights the potential of chemically modified cellulose-based nanostructures as high-performing upcycled separators for energy storage, resulting in their possible commercial applications.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123677"},"PeriodicalIF":10.7,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917366","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

GBSSI loss-of-function in potato affects dynamics in starch biosynthesis and breakdown in leaves and alters leaf starch multi-level structure 马铃薯GBSSI功能丧失影响叶片淀粉合成和分解动态，改变叶片淀粉多层次结构

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-28 DOI: 10.1016/j.carbpol.2025.123681

Ida Westberg , Yu Tian , Ke Guo , Yaqi Hu , Guangpu Hu , Bekzod Khakimov , Ida Elisabeth Johansen , Andreas Blennow , Yuyue Zhong , Bent Larsen Petersen

{"title":"GBSSI loss-of-function in potato affects dynamics in starch biosynthesis and breakdown in leaves and alters leaf starch multi-level structure","authors":"Ida Westberg , Yu Tian , Ke Guo , Yaqi Hu , Guangpu Hu , Bekzod Khakimov , Ida Elisabeth Johansen , Andreas Blennow , Yuyue Zhong , Bent Larsen Petersen","doi":"10.1016/j.carbpol.2025.123681","DOIUrl":"10.1016/j.carbpol.2025.123681","url":null,"abstract":"<div><div>Starch biosynthesis, breakdown, and multi-scale leaf starch granule structure in the potato variety Wotan with knock-out of the Granular Bound Starch Synthase (GBSS) I gene were assessed. In wild-type, starch in the leaves had compared to the tuber significantly lower amylose content, smaller amylopectin molecules, more amylopectin side chains with a degree of polymerization (DP) of 6–12, fewer amylopectin sidechains (DP 12–24), higher degree of branching, thicker amorphous lamellae, higher crystallinity, higher molecular order, and much smaller granules. Knock-out of GBSSI resulted in reduced leaf starch amylose content and larger amylopectin and amylose molecules, more amylopectin sidechains (DP 6–8 and 12–16), fewer internal chains (DP 18–24), increased branching, thickening of the crystalline lamellae, lowered crystallinity and increased molecular order. Leaf starch content assayed over 24 h with a diurnal rhythm of 16/8 h (light/dark) revealed that the <em>gbssI</em> mutant accumulated leaf starch at a faster rate, while degrading leaf starch at a much slower rate compared to wild-type. This study provides a systematic analysis of the multi-scale structure of leaf starch in potato and is the first study to demonstrate that the loss of GBSSI causes significant structural differences in leaf starch while also affecting leaf starch synthesis and degradation.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123681"},"PeriodicalIF":10.7,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895713","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

Magnetic nanoparticles deposition based on the peculiar pore structure of nanocellulose: preparation and properties of efficient thin-layer wave-absorbing materials 基于纳米纤维素特殊孔隙结构的磁性纳米颗粒沉积：高效薄层吸波材料的制备与性能研究

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-28 DOI: 10.1016/j.carbpol.2025.123679

Ziqi Xu , Jian Huang , Zhenxuan Liu , Zhiyan Chen , Guangming Yuan

{"title":"Magnetic nanoparticles deposition based on the peculiar pore structure of nanocellulose: preparation and properties of efficient thin-layer wave-absorbing materials","authors":"Ziqi Xu , Jian Huang , Zhenxuan Liu , Zhiyan Chen , Guangming Yuan","doi":"10.1016/j.carbpol.2025.123679","DOIUrl":"10.1016/j.carbpol.2025.123679","url":null,"abstract":"<div><div>The development of high-performance electromagnetic wave-absorbing materials is an important research topic for solving electromagnetic pollution. Cellulose is a low-cost and biodegradable natural biomass material, but the single dielectric loss mechanism of its carbonation product limits the wave absorption performance. Here, we propose a new strategy to construct hierarchical porous nanofibers with heterogeneous pore geometries (100–200 nm) by controlled carbonization of TEMPO-oxidized cellulose nanofibers. Magnetic Fe/Fe<sub>3</sub>O<sub>4</sub> nanoparticles were embedded in these pores by a one-step annealing process using ferrocene as the iron source. The annealed composite (MF@C) offers dual-scale structural advantages: the unique heterogeneous structure of pores enhances multiple reflections of electromagnetic waves and interfacial polarization, and the magnetic nanoparticles are uniformly confined in the pores, synergistically optimizing impedance matching and magnetic dielectric loss. The MF@C-750 achieves an excellent reflective loss of −35.04 dB at a thickness of only 1.4 mm (RL < -10 dB) and an effective absorption loss of 3.44 GHz. 3.44 GHz effective absorption bandwidth (EAB). This performance is attributed to the synergistic interaction between the anisotropic porous carbon framework and magnetic nanoparticles. This study combines biomass-derived anisotropic porous carbon with confined magnetic nanoparticles, providing a sustainable pathway for the design of efficient microwave absorbers.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123679"},"PeriodicalIF":10.7,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891309","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